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Bridgestone Corporation patents (2017 archive)


Recent patent applications related to Bridgestone Corporation. Bridgestone Corporation is listed as an Agent/Assignee. Note: Bridgestone Corporation may have other listings under different names/spellings. We're not affiliated with Bridgestone Corporation, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "B" | Bridgestone Corporation-related inventors


Amino alkoxy-modified silsesquioxane adhesives for adhering steel alloy to rubber

A coated wire includes a steel alloy coated with a coating comprising one or more amino alkoxy-modified silsesquioxane compounds selected from the group consisting of an amino alkoxy-modified silsesquioxane, an amino/mercaptan co-alkoxy-modified silsesquioxane, an amino/blocked mercaptan co-alkoxy-modified silsesquioxane, or a salt of one or more thereof. A rubber composition and a process for coating wire is also disclosed.. ... Bridgestone Corporation

Hemp oil-containing rubber compositions and related methods

Disclosed herein are rubber compositions comprising hemp oil and a rubber, and tires (and tire components) made from the rubber compositions. Also disclosed are methods of improving the tear resistance of a rubber composition by utilizing hemp oil in the rubber composition.. ... Bridgestone Corporation

Halogenated wax grafted to low molecular weight polymer and rubber composition

A wax-polymer compound includes (a) a polymer component that is a polymerized unsaturated monomer, optionally copolymerized with a vinyl-aromatic monomer, and (b) a halogenated hydrocarbon wax component. The polymer component is grafted to the halogenated hydrocarbon wax component, and the wax-polymer compound has a number average molecular weight of about 1,000 to about 100,000, a method of making the wax-polymer compound and a coated silica particle are also disclosed. ... Bridgestone Corporation

Actinic radiation curable polymeric mixtures, cured polymeric mixtures and related processes

The present disclosure is directed to actinic radiation curable polymeric mixtures, cured polymeric mixtures, tires and tire components made from the foregoing, and related processes.. . ... Bridgestone Corporation

Non-pneumatic tire

There is provided a non-pneumatic tire (1), which includes an attachment body (11) that is attached to an axle, a ring-shaped body (13) that surrounds the attachment body (11) from an outside in a tire radial direction, a connection member (15) that displaceably connects the attachment body (11) and the ring-shaped body (13) to each other, and a cylindrical tread member (16) that is externally mounted on the ring-shaped body (13), in which the tread member (16) includes a base rubber portion (41) that is positioned at an inside in the tire radial direction, and a cap rubber portion (42) that is positioned at an outside of the base rubber portion (41) in the tire radial direction, and in which the rigidity of the base rubber portion (41) is lower than the rigidity of the cap rubber portion (42).. . ... Bridgestone Corporation

Tire and wheel assembly having angled interfaces

A tire is configured to be received by a wheel having at least one angled surface. The tire includes a tread portion, a first sidewall, and a second sidewall. ... Bridgestone Corporation

Rubber composition and method for producing same, crosslinked rubber composition, and tire

As a rubber composition excellent in fatigue resistance and a method for producing the same, this disclosure provides a rubber composition containing a zinc oxide, wherein: a total volume of aggregates of the zinc oxide with a diameter of 20 μm or more is 0.008 or less in the rubber composition by volume fraction; and a method for producing the rubber composition, comprising: preparing a wet masterbatch by using a carbon black with a surface average acidic functional group amount (μeq/m2) of 0.15 or more and less than 3.00, preferably 0.40 or more and less than 1.50; and compounding a zinc oxide with the wet masterbatch.. . ... Bridgestone Corporation

Rubber compositions for radio devices in tires

The embodiments described herein generally relate to an electronic communication module suitable for incorporating into a tire or tire retread, where the electronic communication module comprises a radio device having at least a portion of its outer surface surrounded by a rubber composition. Certain embodiments also relate to tires or tire retreads containing the electronic communication module. ... Bridgestone Corporation

Rubber compositions for radio devices in tires

The embodiments described herein generally relate to an electronic communication module suitable for incorporating into a tire or tire retread, where the electronic communication module comprises a radio device having at least a portion of its outer surface surrounded by a rubber composition. Certain embodiments also relate to tires or tire retreads containing the electronic communication module. ... Bridgestone Corporation

Golf ball manufacturing method

A method of manufacturing golf balls having a core and a cover of at least one layer encasing the core includes the steps of producing a core by molding and vulcanizing a rubber composition containing (a) a base rubber, (b) an α,β-unsaturated carboxylic acid and/or a metal salt thereof, and (c) an organic peroxide; and heat-treating the core for 1 to 24 hours at between 175 and 300° c. Golf balls which undergo little energy loss and have a high initial velocity can be obtained by this method.. ... Bridgestone Corporation

Golf ball

In a golf ball having a core and a cover of one or a plurality of layers that encases the core, the core or at least one layer of the cover is formed of a resin composition which contains from 5 to 250 parts by weight of a mechanoluminescent material that receives mechanical energy and luminesces per 100 parts by weight of a base material which is a rubber material or a resin material. This golf ball has an excellent visibility in that, even under dark conditions, the ball impact site can be clearly confirmed visually at the time of impact. ... Bridgestone Corporation

Golf ball with built-in ic chip

A golf ball includes: a radio frequency identification (rfid) tag including an ic chip and an antenna; a protection layer surrounding the outer periphery of the rfid tag; a relaxation layer surrounding the outer periphery of the protection layer; a core surrounding the outer periphery of the relaxation layer; and a cover surrounding the outer periphery of the core. The curing temperature of the protection layer is 60° c. ... Bridgestone Corporation

Golf ball

In a golf ball having a core and a cover of at least one layer, the core and/or at least one layer of the cover are formed of a resin composition that includes (a) 100 parts by weight of a thermoplastic resin, and (b) 1 to 30 parts by weight of a compound having a fluorene skeleton, or a derivative thereof. This resin composition for golf balls has an improved injection-moldability and thus enables the ball to achieve both a reduced spin rate and a good durability (scuff resistance).. ... Bridgestone Corporation

Rubber composition for golf ball, and golf ball

A rubber composition for golf balls includes (a) a base rubber, (b) two different metal salts of α,β-unsaturated carboxylic acids having 3 to 8 carbon atoms, (c) a metal salt in which at least one bonding site is a fatty acid of 9 or more carbon atoms, and (d) a crosslinking initiator. Letting component (b) include (b-1) an unsaturated metal carboxylate in a high compounding weight and (b-2) an unsaturated metal carboxylate in a low compounding weight, the ratio (b-2)/(b-1) is from 4 to 20 wt % and the ratio (b-2)/(c) is from 20 to 115 wt %. ... Bridgestone Corporation

12/28/17 / #20170368418

Golf ball

In a golf ball having a core and a cover of at least one layer encasing the core, the core is a product molded under heat from a rubber composition which includes (a) a base rubber, (b) an unsaturated carboxylic acid and/or a metal salt thereof, and (c) an organic peroxide. Letting the content of component (b) in the rubber composition per 100 parts by weight of component (a) be x parts by weight and the concentration of volatile substances from component (b) within the core be a wt %, the value a/x is 0.0123 or less. ... Bridgestone Corporation

12/28/17 / #20170368411

Positioning system and positioning method

A positioning system includes a golf ball and a mobile terminal. The golf ball includes a battery and a transmitter configured to operate with electric power supplied from the battery and transmit a radio signal to outside of the golf ball. ... Bridgestone Corporation

12/21/17 / #20170363558

Tire inspection apparatus

. . A tire inspecting apparatus for a tire is provided. The apparatus includes a test stand for supporting and rotating a tire. ... Bridgestone Corporation

12/21/17 / #20170362416

Oil-containing rubber compositions and related methods

Disclosed herein are rubber compositions comprising bio-oil produced by a recombinant cell. Also disclosed are methods of controlling the variability of fatty acid content in bio-oil containing rubber compositions or tires comprising at least one component incorporating the bio-oil containing rubber composition, and a method of providing a bio-oil-containing tire with a reduced carbon footprint.. ... Bridgestone Corporation

12/21/17 / #20170361663

Method and apparatus for utilizing preprinted labels and appliques on a tire

A tire for displaying at least one indicium includes a label affixed to the tire at a mounting location. The label has a first side facing away from the tire and a second side connected to the tire. ... Bridgestone Corporation

12/21/17 / #20170361662

Radar wear sensing for tire applications

A radar-based-sensing system for a tire includes a plurality of sensors disposed circumferentially around a tire annulus. Each sensor in the plurality of sensors is permanently disposed within the tire annulus. ... Bridgestone Corporation

12/21/17 / #20170361661

Rfid wear sensing for tire applications

A tire or tire tread features a helical, metallic rfid tag antenna, configured to provide an operable frequency response between 900 and 930 mhz upon receiving 100 electromagnetic waves having a power between 12 and 24 dbm. The helical, metallic rfid tag antenna is disposed within the at least one tread feature and has a wear rate commensurate with a wear rate of the at least one tread feature. ... Bridgestone Corporation

12/21/17 / #20170361655

Methods for treating inner liner surface, inner liners resulting therefrom and tires containing such inner liners

Methods for treating the surface of a cured inner liner are disclosed. By use of these methods a treated, cured inner liner is produced which has a lower surface with increased adherability to other materials (e.g., adhesives). ... Bridgestone Corporation

12/21/17 / #20170361654

Tire sidewalls including high molecular weight waxes

A tire sidewall comprising a vulcanized rubber and a high molecular weight wax.. . ... Bridgestone Corporation

12/21/17 / #20170361557

Tire having an over-molded bead construction

A pneumatic tire having a bead filler molded over a bead bundle to form an over-molded bead. The bead bundle may include at least one bead wire. ... Bridgestone Corporation

12/21/17 / #20170361554

System and apparatus for heating molds

Various systems and apparatuses for heating molds, including for example tire molds, are disclosed. Heating of molds may be effected via induction heating technology. ... Bridgestone Corporation

12/21/17 / #20170361553

Sipe blade venting structure

A system for venting a tire mold including at least one conduit that creates a fluid connection between an interior and an exterior of a tire mold, with at least one sipe blade extending across the conduit such that the air to either side of the sipe blade will exit the tire mold interior when a tire is formed.. . ... Bridgestone Corporation

12/21/17 / #20170361552

Tire mold and vent insert having corresponding surfaces

A system for venting a tire mold includes a tire mold having an interior region and an exterior region. The interior region is defined by a surface having a non-smooth portion that defines a pattern. ... Bridgestone Corporation

12/21/17 / #20170361178

Golf club head

A hollow golf club head includes a face portion. The head includes a hollow head body, a face member that forms the face portion, and a connecting portion provided between the head body and the face member connects the head body and the face member. ... Bridgestone Corporation

12/14/17 / #20170357887

Tire having radio frequency identification device for monitoring structural health

A tire includes a plurality of tire components defining a plurality of layers. A radio frequency identification (rfid) tag is disposed between at least two of the plurality of layers. ... Bridgestone Corporation

12/14/17 / #20170355406

Sprocket and elastic crawler drive mechanism

A sprocket (10) is capable of engaging with engaging portions (22) on an elastic endless belt (21). On a tooth face (f) of a tooth (12) of the sprocket (10), a portion of a tooth base on at least one side of a center line (o1) of the tooth (12) is a tooth base surface (12b), and the tooth base surface (12b) is inclined relative to the center line (o1) of the tooth (12) at an angle (a1) in a range of 0° or greater to 7.5° or less so as to approach the center line (o1) of the tooth (12) towards a tooth tip surface (12d).. ... Bridgestone Corporation

12/14/17 / #20170355238

Rubber article including electronics device fastener

A rubber article having an electronics device fastener is provided. In one embodiment, a tire is provided, the tire comprising: a first surface; a second surface; and a tire body contained between the first surface and the second surface; wherein the tire body comprises a cavity having a cavity major width in at least one of an axial direction and a circumferential direction, wherein a channel extends between the cavity and the first surface, wherein the channel has a channel major width in at least one of the axial direction and the circumferential direction, wherein the cavity major width is greater than the channel major width, and wherein a protrusion of a fastener is engaged within the cavity.. ... Bridgestone Corporation

12/14/17 / #20170355237

Assembly for attaching an electronics package to a tire

An assembly for mounting an electronics package to an interior of a tire includes a carriage configured to receive an electronics package. The assembly also includes an attaching device having a first side and a second side. ... Bridgestone Corporation

12/14/17 / #20170355236

Tire electronics securing structures

An inflatable electronics band for use in a tire features an annular, flexible, inflatable, tubular body configured to contact an inner portion of a tire opposite the tread surface, such as an innerliner. The inflatable electronics band further features an inflation valve, disposed on the tubular body. ... Bridgestone Corporation

12/14/17 / #20170355235

Rubber article including electronics attachment mechanism

A rubber article having an electronics attachment mechanism is provided. In one embodiment, the rubber article is a tire, comprising: a tread surface; an inner surface; and a tire body contained between the tread surface and the inner surface; wherein the tire body comprises a cavity having a cavity major width in at least one of an axial direction and a circumferential direction, wherein a channel extends between the cavity and the inner surface, wherein the channel has a channel major width in at least one of the axial direction and the circumferential direction, and wherein the cavity major width is greater than the channel major width.. ... Bridgestone Corporation

12/14/17 / #20170355233

Tire with concave sidewalls

A tire having a central axis and a radius further includes a circumferential tread having a convex cross-section. The convex cross-section is defined by a radius that is less than a maximum radius of the tire. ... Bridgestone Corporation

12/14/17 / #20170355178

Laminate and conductive roller

This disclosure is to provide a laminate with improved adhesiveness between the layers and excellent softness, and a conductive roller which enables sufficient pressing contact when pressed to other members. The laminate of this disclosure is a laminate comprising at least 2 or more energy ray curable resin layers formed by curing a resin composition with an energy ray, wherein: the laminate has an energy ray curable resin layer (1) and an energy ray curable resin layer (2); and a first resin composition used in formation of the energy ray curable resin layer (1) contains an energy ray curable resin (a) having an ethylene oxide skeleton having two or more ethylene oxide repeating units.. ... Bridgestone Corporation

12/14/17 / #20170355159

Method of applying a post cure laminate to a tire

A method of applying a laminate to a tire includes pre-treating a portion of the tire and placing the laminate on at least the pre-treated portion of the tire. The method further includes placing an electrical heating element on top of the laminate and placing a pressure element over the electrical heating element and the laminate. ... Bridgestone Corporation

12/14/17 / #20170354261

Seat pad and method for manufacturing seat pad

It is provided a seat pad having excellent comfort in seating with improved air permeability and cushion durability in a seat pad of the vehicle seat. The seat pad includes an air permeable member having a ventilation n function with an outside. ... Bridgestone Corporation

12/07/17 / #20170349010

Attachment patch for mounting devices

An apparatus for mounting an object within a tire includes a ply having a first side for mounting against an innerliner of the tire and a pedestal extending upwards from a second side of the ply. The pedestal has a recessed planar top surface, with an elongated front cavity, an elongated rear cavity, and a substantially cylindrical central cavity disposed therein. ... Bridgestone Corporation

12/07/17 / #20170349007

Optical-based tread depth measuring device, system, and method

A device, system, and method for optically measuring the tread depth of a tire mounted on a vehicle, wherein at least one of a camera, a processor, and an onboard computer may be configured to determine the tread depth from images of the tire tread. Tread depth may be measured when the vehicle is either stationary or moving. ... Bridgestone Corporation

12/07/17 / #20170349005

Flanged tire and wheel assembly

A non-pneumatic tire includes a circumferential tread having a first axial width. The tire further includes a lower annular band having a circumferential convex curved surface and a second axial width greater than the first axial width. ... Bridgestone Corporation

11/30/17 / #20170343452

Tire fault portion prediction system and tire fault portion prediction method

The tire fault portion prediction system of this disclosure comprises: a tire running parameter measurement unit, a state characteristic value measurement unit, a degree of fatigue characteristic value calculation unit, and a tire fault portion prediction unit for predicting fault portions of a tire based on a degree of fatigue characteristic value of at least one of the tire constituent members and the tire running parameter. The tire fault portion prediction method of this disclosure comprises: measuring a tire running parameter, measuring state characteristic values, calculating degree of fatigue characteristic values, and predicting fault portions of a tire based on a degree of fatigue characteristic value of at least one of the tire constituent members and the tire running parameter.. ... Bridgestone Corporation

11/30/17 / #20170343072

Vibration damping device

The vibration damping device 1 comprises an outer cylinder member 9 formed by winding a flat plate member into a cylindrical shape; an inner mounting member 11 connected to the outer cylinder member via elastic members 14; and a rod portion 30, wherein: the outer cylinder member has a meeting portion 60 where end surfaces of the flat plate member on both circumferential ends of the outer cylinder member face each other; a joint portion 61, where joining was performed, is formed on at least a part of the meeting portion; and the rod portion is connected to an outer circumferential surface of the outer cylinder member so as to not overlap the meeting portion.. . ... Bridgestone Corporation

11/30/17 / #20170342253

Rubber compositions containing whey protein

The present disclosure is directed to rubber compositions comprising a butyl rubber or a halogenated butyl rubber, at least one filler, and a whey protein component. The whey protein component is present in an amount sufficient to provide about 0.1 to about 10 phr whey protein in the rubber composition. ... Bridgestone Corporation

11/30/17 / #20170342252

Rubber compositions containing whey protein

The present disclosure is directed to rubber compositions comprising a conjugated diene rubber, a reinforcing silica filler, and a whey protein component. The whey protein component is in an amount sufficient to provide about 0.1 to about 10 phr whey protein. ... Bridgestone Corporation

11/30/17 / #20170342187

Block copolymers including high vinyl segments

A method for the preparation of block copolymers including at least one high vinyl segment, the method comprising (i) charging into a reactor a diene monomer in a hydrocarbon solvent, a catalytically effective amount of anionic initiator, and an oligomeric oxolanyl propane, whereby the reactor is optionally cooled, to form a first batch; (ii) allowing the monomer to polymerize at a peak polymerization temperature of at least about 18° c. And less than about 60° c. ... Bridgestone Corporation

11/30/17 / #20170341471

Tire with tread features having offset protrusions

A shear-controlled tire tread includes a plurality of narrow channels disposed generally perpendicular to a rolling direction. Each narrow channel includes a heel side, a toe side, and a valley connecting the heel side and the toe side, and a first plurality of ridges disposed on a heel side and a second plurality of ridges disposed on a toe side. ... Bridgestone Corporation

11/30/17 / #20170341464

Non-pneumatic tire

A non-pneumatic tire (1) of the present invention is provided with: an attachment body (11) attached to an axle; an outer cylindrical body (13) which surrounds the attachment body (11) from the outside in a tire radial direction; a coupling member (15) which displaceably couples the attachment body (11) and the outer cylindrical body (13); a cylindrical tread member (16) which is wrapped externally around the outer cylindrical body (13); and a protective member (41) which covers a side surface in a tire width direction (h) of the outer cylindrical body (13) from the outside in the tire width direction (h).. . ... Bridgestone Corporation

11/23/17 / #20170335045

Block copolymers including high vinyl segments

. . A method for the preparation of block copolymers including at least one high vinyl segment, the method comprising (i) charging into a reactor a diene monomer in a hydrocarbon solvent, a catalytically effective amount of anionic initiator, and an oligomeric oxolanyl propane, whereby the reactor is optionally cooled; (ii) allowing the diene monomer to polymerize at a peak polymerization temperature of at least about 18° c. And less than about 60° c. ... Bridgestone Corporation

11/23/17 / #20170335032

Bulk polymerization of polyisoprene with preformed catalyst

A method for producing polyisoprene, the method comprising the steps of preparing a preformed lanthanide-based catalyst in the presence of 1,3-butadiene and forming a polymerization mixture by introducing the preformed catalyst to isoprene, where the polymerization mixture includes less than 20% by weight of organic solvent based upon the total weight of the polymerization mixture.. . ... Bridgestone Corporation

11/23/17 / #20170334248

Pneumatic motorcycle tire

The pneumatic motorcycle tire includes a spiral belt, wherein: an aspect ratio of the tire is 60% or more; at a standard condition, each lap of reinforcing cords is located at a constant spacing along a periphery of the spiral belt among the entire tire width direction; in the tire widthwise cross section, a spacing a along the periphery of the spiral belt between each lap of the reinforcing cords adjacent in the tire width direction is 3.5 mm or more and 6.0 mm or less; a spacing b along the periphery of the spiral belt between the two reinforcing cords for forming the strip member is 0.8 mm or more and 1.5 mm or less; and a rupture strength of one of the reinforcing cords is 200 n or more and 1000 n or less.. . ... Bridgestone Corporation

11/23/17 / #20170333991

Method for manufacturing three-dimensional object and three-dimensional object

A method for manufacturing a three-dimensional object includes converting model data of the three-dimensional object into slice data, sintering powder based on the slice data after the conversion, and manufacturing the three-dimensional object by a layered manufacturing process of stacking a plurality of sintered layers. The method includes a part data correction process of correcting positional information of at least one of mutually adjoining part data of the model data of the three-dimensional object, and laying part data on each other by a predetermined amount of overlap, converting the model data corrected in the part data correction process into slice data, and after forming a sintered layer based on the slice data corresponding to one part, forming a sintered layer based on the slice data corresponding to the other part.. ... Bridgestone Corporation

11/23/17 / #20170333766

Golf club head

A wood type golf club head includes a face portion, a crown portion, and a sole portion. The face portion includes an impact area, a toe-side area on a toe side with respect to the impact area, and a heel-side area on the heel side with respect to the impact area. ... Bridgestone Corporation

11/23/17 / #20170333759

Multi-piece solid golf ball

In a multi-piece solid golf ball having a core, an envelope layer encasing the core, an intermediate layer encasing the envelope layer, and an outermost layer encasing the intermediate layer, the envelope layer-encased sphere, the intermediate layer-encased sphere and the ball have surface hardnesses which satisfy a specific relationship, the intermediate layer and the cover have thicknesses which satisfy a specific relationship, and the core has a hardness profile in which the hardnesses at the core surface, core center, a position 5 mm from the core center, and a position midway between the core surface and center satisfy specific relationships. This golf ball satisfies at a high level the flight and control performances desired for use by professional golfers and skilled amateurs. ... Bridgestone Corporation

11/16/17 / #20170327163

Elastic crawler drive mechanism

This disclosure is to provide an elastic crawler drive mechanism including an elastic crawler (20) with engaging portions (22) disposed on an endless belt (21), and a sprocket (10) having teeth (12), wherein: engaging surfaces (f2) of the engaging portions (22) have flat engaging planes (22b) in contact with a part of tooth surfaces (f1) of the sprocket (10) when in contact with tooth bottom surfaces (11a) of the sprocket (10), and when the engaging portions (22) are in contact with the tooth bottom surfaces (11a), and simultaneously the engaging planes (22b) are in contact with the tooth surfaces (f1) of the sprocket (10), at least one of the tooth surfaces (f1) of the sprocket (10) and the engaging planes (22b) of the engaging portions (22) form gaps (c) between the tooth surfaces (f1) and the engaging planes (22b), on sides closer to the tooth bottom surfaces (11a) than contact portions (p) of the tooth surfaces (f1) and the engaging planes (22b).. . ... Bridgestone Corporation

11/16/17 / #20170327020

Seat pad

A seat pad (10) is formed from a foamed molded body. A passenger contact surface (11) which, in a plan view of the seat pad (10), is formed in the shape of a rectangle that is long in the lengthwise direction (x) and short in the widthwise direction (y), is provided. ... Bridgestone Corporation

11/16/17 / #20170326925

Tyre comprising a foam material for acoustic absorption

A tyre comprising an impermeable layer designed to ensure the sealing under pressure of the air contained in the inner cavity of the carcass and a foam material provided on the inside of said inner cavity, wherein the foam material is made up of open cell foam with a cell size or diameter of from 150 to 190 μm and a standard deviation of 5% to 15%.. . ... Bridgestone Corporation

11/16/17 / #20170326922

Tire with bead regions having multiple bead fillers

A tire includes a bead portion with a bead core having a main bead filler and an auxiliary bead filler, and a carcass ply wrapped around a portion of the main bead filler. An end of the carcass ply is located axially outside the main bead filler and radially below an apex of the main bead filler. ... Bridgestone Corporation

11/16/17 / #20170326827

Adjusting expandable rim width using a band

A rim for mounting a tire includes a base portion and a rim portion. The rim portion includes a rim segment, a first flange segment positioned on one side and a second flange segment positioned on an opposite side of the rim segment. ... Bridgestone Corporation

11/09/17 / #20170321775

Vibration-damping device and attachment structure for vibration-damping device

. . Included are an outer attachment member 12, which is coupled to one of a vibration generator 16 and a vibration receiver, an inner attachment member 11, which is coupled to the other one of the vibration generator 16 and the vibration receiver, and an elastic body 13, which is positioned on the outer side of the inner attachment member 11 to couple the outer attachment member 12 and the inner attachment member 11. The outer attachment member 12 is disposed in at least one pair on the outer side of the elastic body 13, with the inner attachment member 11 being interposed between the at least one pair of outer attachment members 12. ... Bridgestone Corporation

11/09/17 / #20170321293

Carbon steel wire and method for manufacturing same

Provided is a carbon steel wire excellent in shear resistance as compared with a conventional one and a method of manufacturing such a carbon steel wire. Provided is a carbon steel wire 1 having a wire diameter of from 0.1 to 0.6 mm, and when the radius of a circular cross-section orthogonal to the longitudinal direction is r and a region from the outer periphery of the circular cross-section toward the center to 0.4r is a surface layer portion 2, the occupancy ratio of a crystal texture in the [110] orientation with respect to the longitudinal direction in the surface layer portion 2 is 60% or less.. ... Bridgestone Corporation

11/09/17 / #20170320361

Tire having grooves comprising sipes and/or other cross-groove negative geometry

Various embodiments of a tire having grooves comprising sipes or other cross-groove negative geometry are disclosed.. . ... Bridgestone Corporation

11/09/17 / #20170320359

Tire

A tire including a circular tire frame formed from a resinous material, the resinous material including a thermoplastic elastomer including a hard segment, a soft segment, and a connection portion that connects two or more segments, wherein a difference in sp value, in absolute value, between the soft segment and the connection portion is 7.7 or less.. . ... Bridgestone Corporation

10/26/17 / #20170308000

Roller and image forming apparatus using same

. . Provided is a roller capable of suppressing generation of cut waste from an end of a roller due to contact with another member inside a device when mounted on an image forming device, particularly a conductive roller, and an image forming device using the same. A roller includes a shaft 1 and a base layer 2 provided on the outer periphery of the shaft. ... Bridgestone Corporation

10/26/17 / #20170306125

Carbon black pellets bound by styrene-butadiene latex polymer

A carbon black pellet comprising a plurality of agglomerates, aggregates, or primary carbon black particles and a binder including a hot-polymerized styrene-butadiene copolymer.. . ... Bridgestone Corporation

10/26/17 / #20170305683

Conveyor belt and conveyor belt device

A conveyor belt (13a) includes a main body rubber (14) which extends in a belt longitudinal direction l and a loop coil (15a) which is embedded in the main body rubber (14) and has an annular shape in a plan view when viewed in belt thickness direction, in which the loop coil (15a) includes a plurality of wire portions (151) which are disposed in a direction which annularly extends in the plan view and in which end portions are joined to each other via a joining portion (152), a pair of longitudinal portion (15a and 15a) which extend in the belt longitudinal direction (l), and a pair of width portions (15b and 15b) which extend in a belt width direction, and a plurality of joining portions (152) are disposed in the direction which annularly extends in the plan view, and the number of the joining portions disposed in the longitudinal portion (15a) of the loop coil (15a) is greater than the number of the joining portions disposed in the width portion (15b) of the loop coil (15a).. . ... Bridgestone Corporation

10/26/17 / #20170305208

Pneumatic tire

A pneumatic tire is configured by a resin tire frame member. An adhesive is provided at an adhesion region of an inner circumferential surface of the tire frame member. ... Bridgestone Corporation

10/26/17 / #20170305199

Passenger vehicle pneumatic radial tire

When a tire is attached to a rim and set to an internal pressure of 250 kpa or more, a ratio sw/od of the tire is 0.26 or less in the case where sw of the tire is less than 165 (mm), and sw and od satisfy a relationship 2.135×sw+282.3≦od in the case where sw is 165 (mm) or more. The tread rubber has dynamic storage modulus e′ of 6.0 mpa to 12.0 mpa, and loss tangent tan δ of 0.05 to 0.15. ... Bridgestone Corporation

10/26/17 / #20170305197

Tire

A tire includes a circular tire frame member formed from a frame-resin material and a covered cord member. The covered cord member includes a reinforcing cord provided in the tire frame member and extending along a tire circumferential direction, a covering-resin layer formed from a covering-resin material, covering the reinforcing cord, and bonded to the tire frame member, and a bonding-resin layer. ... Bridgestone Corporation

10/26/17 / #20170305195

Non-pneumatic tire

In a non-pneumatic tire according to the present invention, a plurality of curved portions (21d to 21f and 22d to 22f) curved in a tire circumferential direction are formed on elastic coupling plates (21 and 22) in an extending direction in which the elastic coupling plates (21 and 22) extend in a tire side view when the non-pneumatic tire 1 is viewed from a tire width direction, curvature directions of the curved portions (21d to 21f and 22d to 22f) adjacent to each other in the extending direction are opposite to each other, the size or thickness in the tire width direction and a transverse section area of the elastic coupling plates (21 and 22) are the minimum at one of a plurality of inflection portions (21g, 21h, 22g, and 22h) positioned between curved portions adjacent to each other in the extending direction of the elastic coupling plates (21 and 22), and the size or thickness in the tire width direction and the transverse section area of the elastic coupling plates (21 and 22) gradually decrease in the extending direction from opposite sides toward one inflection portion (21h and 22h).. . ... Bridgestone Corporation

10/26/17 / #20170305193

Run-flat tire

The run-flat tire of this disclosure includes a tread portion, a pair of sidewall portions continuous, bead portions, side reinforcing rubbers with crescent-like cross section, and a carcass, wherein: when the tire is mounted to a rim, and an internal pressure of 250 kpa or more is applied, in a case where a sectional width sw of the tire is less than 165 mm, a ratio of the sectional width sw to an outer diameter od of the tire, sw/od, is 0.26 or less; and in a case where the sectional width sw of the tire is 165 mm or more, the sectional width sw and the outer diameter od of the tire satisfy a relation expression od≧2.135×sw+282.3 (mm); and when h1 is a tire radial maximum length of the side reinforcing rubber in a tire widthwise cross section in a reference state, a relation expression 10 (mm)≦(sw/od)×h1≦20 (mm) is satisfied.. . ... Bridgestone Corporation

10/26/17 / #20170305191

Reinforcing tire plies

A reinforcing ply for tires made from a textile material and/or a metallic material and suitable for being incorporated into a body ply skim layer. The ply is at least partially coated with a reinforcing composition comprising polyethylene glycol in which calcium carbonate and/or silica is dispersed.. ... Bridgestone Corporation

10/26/17 / #20170304689

Golf club head

A golf club head having a hollow structure includes a face, an internal surface, and an external surface. The face defines a front portion of the golf club head and includes a face surface defining a ball-striking surface. ... Bridgestone Corporation

10/12/17 / #20170291991

Tire

A tire including a tire skeleton body that is made of a resin material containing a polyamide-based thermoplastic elastomer and has a ring shape, wherein the polyamide-based thermoplastic elastomer includes a hard segment, a soft segment consisting of a constituent unit derived from polypropylene glycol, and a binding portion that binds two or more segments and that consists of a constituent unit derived from a dicarboxylic acid of from 6 to 20 carbons, the polyamide-based thermoplastic elastomer having a weight average molecular weight of from 20,000 to 250,000.. . ... Bridgestone Corporation

10/12/17 / #20170291977

Polymerization catalyst composition and method of employing same

The cis-1,4 mer content of conjugated diene mer in polymers can be increased by adding any of a class of morpholine compounds to a catalyst composition that includes a lanthanide metal atom.. . ... Bridgestone Corporation

10/12/17 / #20170291459

Run-flat tire

The run-flat tire of this disclosure includes a tread portion, a pair of sidewall portions, bead portions, side reinforcing rubbers with crescent-like cross section, a carcass formed of plies of radially arranged cords, wherein: when the tire is mounted to a rim, and an internal pressure of 250 kpa or more is applied to the tire, in a case where a sectional width sw of the tire is less than 165 mm, a ratio of the sectional width sw to an outer diameter od of the tire, sw/od, is 0.26 or less; in a case where the sectional width sw of the tire is 165 mm or more, the sectional width sw and the outer diameter od of the tire satisfy a relation expression od≧2.135×sw+282.3 (mm); the bead portions have bead cores, and further have bead fillers; and the relation expression 1.8≦h1/h2≦3.5 is satisfied.. . ... Bridgestone Corporation

10/12/17 / #20170291455

Motorcycle tire

Provided is a motorcycle tire having improved wet performance during straight running without compromising other performances. The motorcycle tire is a motorcycle tire whose rotation direction when mounted on a vehicle is designated. ... Bridgestone Corporation

10/12/17 / #20170291381

Method and apparatus for dual tire buffing and handling

A dual tire buffing apparatus includes a turntable having a first end and an opposite second end. The turntable is rotatable about a central axis between first and second positions. ... Bridgestone Corporation

10/05/17 / #20170285516

Elastic member

Provided is an elastic member which is obtained by forming a resin coating layer on at least a part of the surface of a base that is formed of an elastic material, and which is characterized in that the resin coating layer is a coating film that contains 1.5-45 parts by mass of a low-friction powder per 100 parts by mass of a base resin and has a 100% modulus of 22-30 mpa. This elastic member has a resin coating layer that has a good balance between film formability and low friction, and is suitable as a sealing member for an opening part of a toner container that is provided on a toner cartridge of a printer, a copy machine or the like.. ... Bridgestone Corporation

10/05/17 / #20170285513

Roller and image forming apparatus using same

Provided is a roller, in particular a conductive roller, capable of suppressing generation of cut debris from a cut surface of an end part of a foam layer in the roller axial direction over a long period of time, and an image forming device using the roller. A roller includes a shaft 1, a foam layer 2 and at least one film layer 3 sequentially provided on the outer periphery of the shaft. ... Bridgestone Corporation

10/05/17 / #20170283576

Carbon black pellets bound by functional polymer

A carbon black pellet comprising a plurality of agglomerates, aggregates, or primary carbon black particles and a binder including a functional polymer.. . ... Bridgestone Corporation

10/05/17 / #20170283516

Processes for preparing aminosilane functionalized polymers

Metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer.. ... Bridgestone Corporation

10/05/17 / #20170282017

Golf ball

The invention provides a golf ball having a core and a cover of one layer or a plurality of layers, wherein the core is formed of a material molded under heat from a rubber composition containing (a) a base rubber, (b) an organic peroxide, and (c) water and/or a metal monocarboxylate, and has a hysteresis loss of 50% or less when compressed at a load cell speed of 500 mm/min and under a constant load of 5,000 n.. . ... Bridgestone Corporation

10/05/17 / #20170282016

Golf ball

The invention provides a golf ball having a core and a cover of one layer or a plurality of layers, the core being formed of a material molded under heat from a rubber composition which includes (a) a base rubber, (b) an organic peroxide, and (c) water and/or a metal monocarboxylate. The product p×e of the difference p (mol/m3) in crosslink density between the core surface and the core center, as measured based on a toluene swelling test, multiplied by the deflection e (mm) of the core when compressed under a final load of 1,275 n (130 kgf) from an initial load state of 98 n (10 kgf) is at least 28×102 mol/m3·mm.. ... Bridgestone Corporation

09/28/17 / #20170275400

Method for preparing terminal-modified conjugated diene polymer, terminal-modified conjugated diene polymer, rubber composition and tire

This disclosure is to provide a method for preparing a terminal-modified conjugated diene polymer which achieves an extremely high compounding amount of cis-1,4 without complicated preparing conditions, a terminal-modified conjugated diene polymer obtained via the method, a rubber composition containing the terminal-modified conjugated diene polymer, and a tire using the rubber composition. This disclosure is a method for preparing a terminal-modified conjugated diene polymer comprising: polymerizing a conjugated diene compound by using a polymerization catalyst composition and modifying a polymer obtained via the polymerization by using a modifier, wherein the polymerization catalyst composition contains a rare earth element compound, and a coordination compound having a cyclopentadiene skeleton selected from substituted or unsubstituted cyclopentadienes, substituted or unsubstituted indenes, and substituted or unsubstituted fluorenes, and wherein the polymerization and modification is performed in a one-pot way.. ... Bridgestone Corporation

09/28/17 / #20170274705

Pneumatic tire

A pneumatic tire is configured by a resin tire frame member. An inner face of the tire frame member is provided with an attachment section. ... Bridgestone Corporation

09/21/17 / #20170267840

Starch pre-blend, starch-filled rubber composition, and related processes

Disclosed herein is a liquid pre-blend of starch and oil. The pre-blend comprises starch and oil and can be used (is suitable for use in) a rubber composition. ... Bridgestone Corporation

09/21/17 / #20170267818

Method for producing rubber composition, and rubber composition

Provided is a method for producing a rubber composition that includes a rubber component (a) including natural rubber, at least one filler (b) selected from an inorganic filler and carbon black, and a monohydrazide compound (c) supported on a solid. The monohydrazide compound (c) is represented by general formula (i): r—conhnh2, where r represents an alkyl group having from 1 to 30 carbon atoms, a cycloalkyl group having from 3 to 30 carbon atoms, or an aryl group. ... Bridgestone Corporation

09/21/17 / #20170267798

Functionalized polymer

A method for providing a polymer having terminal functionality involves reacting a terminally active polymer with an α,β-ethylenically unsaturated compound that includes a group 2-13 element so as to provide a functionalized polymer. The resulting polymer exhibits enhanced interactivity with particulate fillers and can be used in the manufacture of vulcanizates.. ... Bridgestone Corporation

09/21/17 / #20170267033

Pneumatic tire

My pneumatic tire includes a decoration band formed on the outer surface of a sidewall portion, extending in the tire circumferential direction and including a plurality of recesses and land portions defined between the recesses. A plurality of ridges are provided in each recess. ... Bridgestone Corporation

09/21/17 / #20170267032

Sensory misalignment siping

A wear detection system for truck steer tires is provided. A plurality of sipe groups are located in a tread rib of the tire. ... Bridgestone Corporation

09/14/17 / #20170260377

Golf ball material and golf ball

A golf ball material includes (a) one or more resin ingredient selected from the group consisting of olefin-unsaturated carboxylic acid random copolymers, olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester random copolymers, and metal ion neutralization products of these copolymers; (d) an amino compound having at least 2 amino groups per molecule; (b) one or more resin ingredient selected from the group consisting of polyethylene, polyesters and polyamide elastomers; and (c) an agent for compatibilizing components (a) and (b). The compatibilizing agent (c) includes: (c-i) two different types of base polymer selected from a specific group, (c-ii) a hydrogenated diene polymer having at least one type of functional moiety selected from a specific group of moieties, and (c-iii) an olefinic polymer having at least one type of functional moiety selected from a specific group of moieties.. ... Bridgestone Corporation

09/14/17 / #20170259625

Pneumatic tire having sidewall cover layer

A pneumatic tire having a sidewall cover layer for application of a printing ink and/or paint is provided. In one embodiment, the tire comprises: a sidewall portion including a cushion layer and a cover layer, wherein the cover layer is oriented axially outwardly of the cushion layer, wherein the cover layer is bonded to the cushion layer, wherein the cover layer is formed from a material that contains wax in a concentration of less than 0.03 pph, and wherein the cushion layer does not contain a wax.. ... Bridgestone Corporation

09/14/17 / #20170259515

Tire

A tire includes a circular tire frame member formed from a frame-resin material and a covered cord member. The covered cord member includes a reinforcing cord provided in the tire frame member and extending along a tire circumferential direction, a covering-resin layer formed from a covering-resin material, covering the reinforcing cord, and bonded to the tire frame member, and a bonding-resin layer. ... Bridgestone Corporation

09/07/17 / #20170254638

Overlap measuring apparatus and overlap measuring method

An apparatus and method accurately measures an amount of overlap in joining together the end portions of a sheet-shaped member constituting a tire. The overlap amount of the sheet-shaped member front and rear ends is measured when the sheet-shaped member having been molded into a predetermined length with molding marks extending on the surface in width direction is wound around the periphery of a molding drum from the front end. ... Bridgestone Corporation

09/07/17 / #20170253091

Pneumatic tire and assembly thereof

A pneumatic tire and pneumatic tire assembly are configured by a resin tire frame member. A sound-absorbing material is provided to an inner face of the tire frame member. ... Bridgestone Corporation

09/07/17 / #20170253089

Pneumatic tire

This pneumatic tire includes, on a tread surface, land portions defined by tread edges and by circumferential main grooves extending continuously in the tread circumferential direction; central sipes, in a central land portion on a tire equatorial plane, extending in the tread width direction and formed at a predetermined pitch length, the central land portion being continuous in the tread circumferential direction between adjacent central sipes; and intermediate sipes, in intermediate land portions adjacent to the central land portion on both sides in the tread width direction with the circumferential main grooves therebetween, extending in the tread width direction and being formed at a predetermined pitch length, each intermediate land portion being continuous in the tread circumferential direction between adjacent intermediate sipes. The pitch length of the intermediate sipes is longer than that of the central sipes, and both ends of the central sipes open into the circumferential main grooves.. ... Bridgestone Corporation

09/07/17 / #20170253087

Pneumatic tire

The disclosed pneumatic tire includes a plurality of circumferential main grooves and is configured to be mounted in a specified vehicle mounting direction. On the tread surface, an inner shoulder land portion does not substantially include a groove, and has only one or more inner circumferential sipe extending in the tread circumferential direction and a plurality of inner widthwise sipes extending in the tread width direction, and an outer shoulder land portion has a plurality of widthwise grooves communicating with the circumferential main groove and the tread edge and extending in the tread width direction and an outer widthwise sipe located between the widthwise grooves adjacent in the tread circumferential direction and extending in the tread width direction.. ... Bridgestone Corporation

09/07/17 / #20170253084

Non-pneumatic tire

The present invention is provided with: a mounting body mounted on an axle; a ring-shaped body (13) surrounding the mounting body from an outside in a tire radial direction; a connecting member (15) configured to connect the mounting body and the ring-shaped body (13) such that the mounting body and the ring-shaped body (13) are displaceable; and a cylindrical tread member (16) mounted over the ring-shaped body (13), wherein grooves (51, 52) are formed at an outer peripheral surface of a portion located above and corresponding to a portion of the tread member (16) at which the ring-shaped body (13) and the connecting member (15) are connected.. . ... Bridgestone Corporation

09/07/17 / #20170252671

Extractor and related methods

An extractor suitable for using a solvent to separate a compound from a solid or semisolid substance containing the compound. The extractor includes a conveying assembly having an inclined conveyor for receiving the substance from a substance inlet and moving the substance through the solvent, an inclined upper surface associated with the first conveyor and an inclined lower surface associated with the first conveyor. ... Bridgestone Corporation

08/31/17 / #20170247532

Silica-containing rubber compositions containing specified coupling agents and related methods

Disclosed herein are rubber compositions comprising a conjugated diene-containing polymer, a reinforcing filler including silica, a bi-functional silane coupling agent, and an unsaturated, non-sulfur silane coupling agent, where the ratio of the bi-functional silane coupling agent to the unsaturated, non-sulfur silane coupling agent is from about 5:1 to about 20:1. Also disclosed are related methods which include both in-situ reaction of the silica filler and the unsaturated, non-sulfur silane coupling agent and pre-reacting of at least a portion of the silica filler and at least a portion of the unsaturated, non-sulfur silane coupling agent.. ... Bridgestone Corporation

08/31/17 / #20170247530

Methods for preparing tire treads with advantageous wear characteristics

A method for preparing a vulcanizable composition of matter, the method comprising mixing rubber, silica, silica coupling agent, a strong base, and nicotinamide to form a masterbatch, introducing a curative to the masterbatch, and mixing the curative into the masterbatch to form a vulcanizable composition of matter.. . ... Bridgestone Corporation

08/31/17 / #20170247478

Method for producing polydienes and polydiene copolymers with reduced cold flow

A method for preparing a coupled polymer, the method comprising the steps of polymerizing monomer to form a reactive polymer and reacting the reactive polymer with a carboxylic or thiocarboxylic ester containing a nitro group, where the carboxylic or thiocarboxylic ester containing a nitro group includes a single nitro group.. . ... Bridgestone Corporation

08/31/17 / #20170246919

Pneumatic tire

Main ridges of a first direction ridge pattern 50 and a second direction ridge pattern 60 that are adjacent to one another are connected together. Due thereto, the main ridges are connected as one ridge from one end to another end of a decorative concave portion 48, and a continuous main ridge 51 is formed.. ... Bridgestone Corporation

08/31/17 / #20170246917

Pneumatic tire

First direction ridge patterns and second direction ridge patterns are lined-up alternately at a decorative concave portion 18. Plural main ridges 22a through 22d and sub-ridges 26a through 26d, which project-out from a bottom surface 18a, are formed at a first direction ridge pattern 20. ... Bridgestone Corporation

08/31/17 / #20170246914

Tire traction element

Various embodiments of a tire traction element are provided. In one embodiment, a tire traction element is oriented in a circumferential groove of a tire to provide improved snow and/or mud traction. ... Bridgestone Corporation

08/31/17 / #20170246912

Pneumatic tire

A pneumatic tire comprising a belt formed of two inclined belt layers formed of a rubberized layer of cords extending in a manner inclined with respect to a tire circumferential direction, the cords crossing each other between the layers, wherein: the two inclined belt layers have different tire widthwise widths w1 (mm) and w2 (mm); a ratio w2/w1 satisfies a relation expression 0.25≦(w2/w1)≦0.8; a tire radial outer side of the belt further includes a reinforcing belt formed of one or more circumferential belt layers formed of a rubberized layer of cords extending along the tire circumferential direction; and a circumferential rigidity of the reinforcing belt in a tire widthwise region between an end of the one inclined belt layer and an end of the other inclined belt layer is higher than a circumferential rigidity of the reinforcing belt in a tire widthwise inner side of the region.. . ... Bridgestone Corporation

08/31/17 / #20170246911

Tire

A tire that may improve pressure resistance and cut resistance. The tire is provided with a tire carcass member fabricated of resin and a reinforcing layer. ... Bridgestone Corporation

08/31/17 / #20170246906

Tire having an asymmetric body ply construction

A pneumatic tire may have an outboard bead portion oriented on an outboard side of the tire, an inboard bead portion oriented on an inboard side of the tire, an outboard sidewall portion oriented on the outboard side of the tire, an inboard sidewall portion oriented on the inboard side of the tire, an outboard shoulder portion oriented on the outboard side of the tire, and at least one body ply. The body ply may extend about the outboard bead portion and have a first turnup that extends to at least the outboard shoulder portion. ... Bridgestone Corporation

08/31/17 / #20170246823

Systems and methods for manufacturing a tread band

A method of manufacturing a tread band includes providing a mold having one or more protrusions extending outward in a first direction away from a bottom surface of the mold. At least a first one of the protrusions includes a tip feature extending outward in the first direction. ... Bridgestone Corporation

08/31/17 / #20170246738

Adjustable rotating tire section buffing table

A table comprising a worktop including an axis of rotation, a perimeter, and an effective radius, the effective radius defined as the average distance between the axis of rotation and the perimeter; a frame; a rotational connection disposed between the worktop and the frame, the connection configured to allow the worktop to rotate about the axis of rotation; and a plurality of bearings disposed between the worktop and the frame to rollingly support the worktop on the frame, at least one of the bearings disposed more than half of the effective radius from the axis of rotation.. . ... Bridgestone Corporation

08/31/17 / #20170246555

Fractionator for separating solubilized rubber from a co-solvent based miscella and related processes

Provided herein is a fractionator and related process for separating solubilized rubber from a co-solvent based miscella.. . ... Bridgestone Corporation

08/24/17 / #20170241778

Road surface condition predicting method and road surface condition predicting system

. . The invention provides a method for accurately predicting a road surface condition at a location within a predetermined range. To that end, the road surface conditions at the location within the predetermined range are predicted using road surface estimation decision values calculated using vehicular information, which is the information on the behavior of a vehicle wi during travel obtained by an on-board sensor mounted on the vehicle, or estimated road surface conditions estimated using the road surface estimation decision values. ... Bridgestone Corporation

08/24/17 / #20170240730

Rubber composition for conveyor belt, and conveyor belt

Provided is a rubber composition capable of forming a conveyor belt having an excellent low loss property, while also retaining high strength and high flame retardance as a rubber article. The rubber composition for a conveyor belt contains: rubber components including natural rubber and butadiene rubber; a vulcanizing agent; a vulcanization accelerator; carbon black; chlorinated paraffin; and antimony trioxide. ... Bridgestone Corporation

08/24/17 / #20170240729

Method for producing rubber composition

The present invention provides a method for producing a rubber composition containing a rubber component (a) which contains a copolymer of a conjugated diene compound and an aromatic vinyl compound, in which the conjugated diene compound amount in the copolymer is 50% by mass or more and 73% by mass or less and the molecular weight at the peak top of the molecular weight distribution of the polystyrene-equivalent number-average molecular weight of the copolymer as measured through gel permeation chromatography is 100,000 or more and 600,000 or less, a filler containing an inorganic filler (b), a silane coupling agent (c) and at least one accelerator (d) selected from guanidines, sulfenamides, thiazoles, thiurams, thioureas, dithiocarbamates and xanthates, wherein the rubber composition is kneaded in plural stages, and in the first stage (x) of kneading, the rubber component (a), all or a part of the inorganic filler (b), all or a part of the silane coupling agent (c) and the accelerator (d) are added and kneaded. The production method can produce a rubber composition excellent in low-heat-generation property and abrasion resistance.. ... Bridgestone Corporation

08/24/17 / #20170240722

Improved rubber compositions and uses thereof

The present disclosure is directed to rubber compositions containing a chemical additive capable of generating or enhancing strain-induced crystallization into the compositions, and tires containing the rubber compositions in one or more components such as sidewalls or treads. The chemical additive is at least one fatty acid amide compound of formula (i). ... Bridgestone Corporation

08/24/17 / #20170240006

Rapid tire inflation system

A rapid inflation system is provided for the tires of a machine such as an agricultural machine which must periodically move between field conditions and road conditions. The system can relatively rapidly inflate the tires from a lower field ready state to a higher pressure road ready state by the use of a high pressure reservoir chamber defined within the tire.. ... Bridgestone Corporation

08/24/17 / #20170240005

Pneumatic tire

A pneumatic tire in which a sealing layer can be provided at a desired position on an inner circumferential surface of the tire is provided. The pneumatic tire (10) includes a tire frame member (12) formed in a circular shape and made of a resin, and a sealing layer provided by fixing a sealant housing member (34) internally filled with a sealant (38) to an inner circumferential surface of the tire frame member (12).. ... Bridgestone Corporation

08/24/17 / #20170240003

Pneumatic tire

First direction ridge patterns and second direction ridge patterns are lined-up alternately at a tire side portion. Plural main ridges 22a through 22d and sub-ridges 26a through 26d, which project-out from a bottom surface 18a, are formed at a first direction ridge pattern 20. ... Bridgestone Corporation

08/24/17 / #20170240002

Pneumatic tire

Provided is a pneumatic tire including, on an outer surface of its sidewall portion, a decorative portion including a print layer and a protective layer located on a tire outer side of the print layer. The decorative portion further includes an intermediate layer located between the print layer and the protective layer. ... Bridgestone Corporation

08/24/17 / #20170239900

Tire mounting machine

A tire holding device of a tire mounting machine grasps the bead section of a green tire by chucking paddles and places the green tire around an upright cylindrical vulcanization bladder. A bladder device of the tire mounting machine expands the vulcanization bladder to press same against the inner surface of the green tire, and sets the green tire in a vulcanization-mold. ... Bridgestone Corporation

08/24/17 / #20170239519

Measurement system and measurement method

A measurement system includes a first measurement unit configured to measure floor reaction forces of golfer's left and right legs, a second measurement unit that is attached to the upper body of a golfer and configured to measure an angular velocity of the golfer, and a processing unit. The processing unit calculates, based on measurement results of the first measurement unit and the second measurement unit, a first energy which is a kinetic energy of the golfer during a swing.. ... Bridgestone Corporation

08/17/17 / #20170234397

Anti-vibration device

This disclosure is to provide an anti-vibration device with reduced high frequency vibration. The anti-vibration device (1) according to this disclosure has: elastic bodies (4); and an intermediate plate (5) arranged between the elastic bodies (4) and connected to the elastic bodies (4). ... Bridgestone Corporation

08/17/17 / #20170233558

Methods for preparing tire treads with advantageous wear characteristics

A method for preparing a vulcanizable composition of matter, the method comprising mixing, within a first mixing step, rubber, silica, and silica coupling agent to form a first masterbatch composition, adding nicotinamide to the first masterbatch composition and mixing within a second mixing step to form a second masterbatch composition, and adding a curative to the second masterbatch composition and mixing within a final mixing step.. . ... Bridgestone Corporation

08/17/17 / #20170233557

Rubber composition for tire

The rubber composition of the present invention is prepared by mixing a rubber component (a), zinc oxide (b), and a co-condensate (c) having a softening point of 150° c. Or lower and containing a p-tert-butylphenol-derived constituent unit represented by the following formula (1), an o-phenylphenol-derived constituent unit represented by the following formula (2) and a resorcinol-derived constituent unit represented by the following formula (3), wherein the nitrogen adsorption specific surface area (n2sa) of the zinc oxide (b) measured according to the bet method is 6 m2/g or more and 110 m2/g or less, the mixing amount of the zinc oxide (b) is 5 parts by mass or more and 13 parts by mass or less based on 100 parts by mass of the rubber component (a), and the mixing amount of the co-condensate (c) is 0.1 parts by mass or more and 10 parts by mass or less based on 100 parts by mass of the rubber component (a). ... Bridgestone Corporation

08/17/17 / #20170233550

Tire frame and tire

A circular tire frame includes a resinous material including a polyamide-based thermoplastic elastomer and a caprolactam.. . ... Bridgestone Corporation

08/17/17 / #20170233549

Improved rubber compositions and uses thereof

The present disclosure is directed to rubber compositions containing a chemical additive capable of generating or enhancing strain-induced crystallization into the compositions, and tires containing the rubber compositions in one or more components such as sidewalls or treads. The chemical additive is at least one nucleating agent of formula (i) or formula (ii). ... Bridgestone Corporation

08/17/17 / #20170233504

Method for manufacturing conjugated diene polymer, conjugated diene polymer, rubber composition, and tire

A method for manufacturing a conjugated diene polymer that can increase the robustness of a polymerization reaction system is provided. Also, a conjugated diene polymer, with a high cis-1,4-bond content, that is manufactured by this method for manufacturing is provided. ... Bridgestone Corporation

08/17/17 / #20170232798

Steel cord for reinforcing rubber article, and pneumatic tire using same

This steel cord for reinforcing a rubber article includes one core strand having a two-layer twisted layer structure formed by intertwining a plurality of steel filaments, and a plurality of sheath strands having a twisted layer structure formed by intertwining a plurality of steel filaments. The sheath strands are intertwined around the core strand, a core of the core strand is formed by two core filaments, and the diameter of outermost layer sheath filaments forming an outermost layer sheath of each sheath strand is greater than the diameter of filaments inside the outermost layer sheath of the sheath strand.. ... Bridgestone Corporation

08/17/17 / #20170232797

Pneumatic tire

A tire is provided in which there is no detriment to the ease of work when fitting onto a rim and removing from a rim, even when the tire is provided with a sealing layer. A pneumatic tire (10) includes a tire frame member (12) formed in a circular shape and made of a resin, and a sealing layer provided by filling a cavity (34) formed inside the tire frame member (12) with a sealant (38).. ... Bridgestone Corporation

08/17/17 / #20170232796

Tire

There is provided a tire comprising a tire frame that is formed of a resin material and has a circular form, wherein the resin material comprises a thermoplastic elastomer having a structure including a hard segment (hs) and a soft segment (ss), which repeat alternately, in which a number of repeating units in one molecular chain is from 2 to 10, each of the repeating units being a pair of the hard segment (hs) and the soft segment (ss), the thermoplastic elastomer having a number average molecular weight of from 45,000 to 160,000.. . ... Bridgestone Corporation

08/17/17 / #20170232787

Non-pneumatic tire

The present invention provides a non-pneumatic tire which is provided with an attachment body (11) attached to an axle, a ring-shaped body (13) which surrounds the attachment body (11) from the outside in a tire radial direction, and a coupling member (15) which displaceably couples the attachment body (11) and the ring-shaped body (13), wherein the coupling member (15) is formed of a synthetic resin material and a reinforcing member is embedded in the coupling member (15).. . ... Bridgestone Corporation

08/17/17 / #20170232697

Tire

A tire includes: a tire frame member formed in a ring shape from a frame resin material, and including a pair of bead sections, a pair of side sections, and a crown section; a ring shaped bead core that is embedded in and joined to each of the bead sections, and that is formed by a single strand, or plurality of strands, of bead cord extending in the tire circumferential direction, and covered with, and joined to, a covering resin material; and an extension portion that extends from each of the bead cores in a direction that intersects with the tire circumferential direction when viewed from a tire side face, and that is joined to the tire frame member.. . ... Bridgestone Corporation

08/17/17 / #20170232696

Tire manufacturing method and tire

A tire manufacturing method includes: a frame forming process of forming a tire frame member using a resin material; an unvulcanized rubber placement process of disposing unvulcanized rubber so as to span from an outer face of a side portion across to an inner face of a bead portion of the tire frame member; and a vulcanization process of vulcanization molding the unvulcanized rubber using a vulcanization machine in which a recessed portion is formed in an inner side mold face among mold faces for vulcanization molding the unvulcanized rubber, the inner side mold face being for vulcanization molding part of the unvulcanized rubber disposed on the inner face of the bead portion.. . ... Bridgestone Corporation

08/10/17 / #20170226309

Processes for recovering rubber from aged briquettes

Provided herein are organic solvent-based processes for the removal of rubber from aged briquettes made from compressed plant matter (briquettes) of non-hevea plants.. . ... Bridgestone Corporation

08/10/17 / #20170225524

Tire

The rf tag known in the art incorporated in a tire has a problem that it can easily get distorted when the stresses occurring in the running tire converge on its vicinity. The present invention provides a tire (1) configured to prevent distortion from occurring in the rf tag (50) incorporated therein. ... Bridgestone Corporation

08/10/17 / #20170225520

Pneumatic tire

Provided is a pneumatic tire including, on an outer surface of its sidewall portion, a decorative portion including a print layer and inner and outer layers respectively disposed on tire inner and outer sides of the print layer. When storage moduli at 25° c. ... Bridgestone Corporation

08/10/17 / #20170225515

Pneumatic tire

This pneumatic tire includes, on the tread surface, land portions defined by circumferential main grooves extending continuously in the tread circumferential direction and by tread edges. An intermediate land portion on one side in the tread width direction, adjacent to the tire equatorial plane side of the outermost circumferential main groove on the one side, is formed into blocks only by sipes extending in the tread width direction, an intermediate land portion on the other side in the tread width direction, adjacent to a tire equatorial plane side of an outermost circumferential main groove on the other side, is formed in a ribbed shape, and intermediate land portion lug grooves are formed in the intermediate land portion on the other side, with one end opening into the outermost circumferential main groove on the other side, and the other end terminating within the intermediate land portion on the other side.. ... Bridgestone Corporation

08/10/17 / #20170225513

Pneumatic tire for passenger vehicle

The pneumatic tire for passenger vehicle includes on a tread portion a main belt formed of at least two inclined belt layers formed of a rubberized layer of cords extending in a manner inclined with respect to a tire circumferential direction, and a reinforcing belt formed of at least one circumferential belt layer formed of a rubberized layer of cords extending along the tire circumferential direction, the reinforcing belt arranged on a tire radial outer side of the main belt, the main belt and the reinforcing belt arranged spanning from a tire equatorial plain of the tread portion to shoulder portion sides, wherein a thickness between the cords of two of the inclined belt layers adjacent to each other is larger in the shoulder portions than in a central portion of the tread portion.. . ... Bridgestone Corporation

08/10/17 / #20170225045

Golf ball and method of manufacture

In a golf ball having a core and a cover of one or more layer encasing the core, an outermost layer of the cover is molded of a thermoplastic material selected from the group consisting of polyurethane, polyurea and mixtures thereof, and the surface of the cover is treated with a polyisocyanate compound that is free of organic solvent. A method of manufacturing the golf ball is also described. ... Bridgestone Corporation

08/10/17 / #20170225042

Golf ball

Golf ball having a core and a cover of one or more layers, the core being formed of a material molded under heat from a rubber composition including a base rubber, an organic peroxide, and water and/or a metal monocarboxylate. Defining the tan δ slope as (tan δ10−tan δ1)/(10%−1%), where tan δ1 and tan δ10 are the loss tangents at dynamic strains of, respectively, 1% and 10% when the loss tangents of the core center and the core surface are measured at −12° c. ... Bridgestone Corporation

08/03/17 / #20170219046

Vibration isolation device

. . The vibration isolation device (10) includes a first mounting member (11) connected to one of a vibration generating portion and a vibration receiving portion, and a second mounting member (12) connected to the other thereof; and an elastic body (13) disposed between the mounting members. On either one of opposing surfaces (24, 25) that oppose each other, respectively on the first mounting member (11) and the second mounting member (12), a stopper elastic body (27) having a stopper surface (26) which faces the other of the opposing surfaces (24, 25) such as to be capable of coming into contact therewith, and a hollow portion (30) in which the stopper elastic body (27) is disposed, are provided. ... Bridgestone Corporation

08/03/17 / #20170218186

Rubber mixture comprising pyrolysis carbon black, a method to prepare the mixture and use of said mixture

A rubber mixture comprising a polymer base with a cross-linkable unsaturated chain, a reinforcing filler, a silane bonding agent, sulphur and vulcanizing agents. Part of the reinforcing filler consists of pyrolysis carbon black, whose surface is at least partially coated with a silica layer.. ... Bridgestone Corporation

08/03/17 / #20170218180

Rubber compound with a high impermeability to oxygen for tyre portions

A compound to prepare a tyre portion comprising a polymer base with cross-linking unsaturated chain comprising at least one halobutyl rubber, a reinforcing filler, a vulcanization system and a reinforcing filler with a laminated structure pretreated with a treating agent comprised in the group consisting of fatty acids, resin acid, fatty acid salts and fatty acid esters.. . ... Bridgestone Corporation

08/03/17 / #20170217265

Method of modeling tire performance

A method of modeling a tire includes providing a tire having a first tire design, rotating the tire under a vertical load, and measuring a plurality of forces at a plurality of selected conditions. The method further includes using a computer to plot the plurality of forces against the plurality of conditions, using the computer to plot a plurality of moments against the plurality of conditions, and using the computer to fit a first force curve to the plurality of plotted forces at the plurality of conditions, such that the first force curve is asymmetric. ... Bridgestone Corporation

08/03/17 / #20170217252

Tire

To improve the rigidity of a join portion of a tire frame member. A tire includes: a toroidal tire frame member formed of resin and is formed by joining a plurality of tire pieces together in a tire width direction; a reinforcement belt layer adhered to the tire frame member, and that extends in the tire circumferential direction so as to cover a join portion between the plurality of tire pieces; and tread rubber provided at an outer side in the tire radial direction of the tire frame member and the reinforcement belt layer, and the reinforcement belt layer includes a cord that straddles the join portion between the tire pieces.. ... Bridgestone Corporation

08/03/17 / #20170217251

Tire

There is provided a tire including a tire frame that is formed of a resin material and has a circular form, wherein the resin material includes a thermoplastic elastomer having a hard segment (hs) and a soft segment (ss), in which only one unit of the soft segment (ss) is included in a single molecular chain, and both terminals of the single molecular chain are formed by the hard segment (hs), the thermoplastic elastomer having a number average molecular weight of from 12,000 to 24,000.. . ... Bridgestone Corporation

07/27/17 / #20170211229

Steel cord for reinforcing rubber article

Provided is a steel cord for reinforcing a rubber article which can further improve cut resistance when applied to a tire while maintaining the amount of steel to be used. A steel cord for reinforcing a rubber article comprising: one core strand 11 having a two-layered layered-twisted structure formed by twisting a plurality of steel filaments 1; and a plurality of sheath strands 12 having a layered-twisted structure formed by twisting a plurality of steel filaments 2, wherein the sheath strands are twisted around the core strand. ... Bridgestone Corporation

07/27/17 / #20170210183

Tire

A tire (10) includes bead portions (16) in which bead cores (22) of resin-covered cord (20) are respectively embedded, and reinforcing layers (14) that are formed of a reinforcing material (30) covered by a resin material, that are each thermally welded to the respective bead core (22), and that extend from the respective bead portion (16) to a side portion (18).. . ... Bridgestone Corporation

07/27/17 / #20170210171

Tire

A tire whose pressure-proofing performance and impact durability can be improved, is provided. The tire includes: a tire frame member which is made of resin and includes: a bead portion covering a bead core; a side portion extending outwardly in a tire radial direction from the bead portion; and a crown portion extending inwardly in a tire width direction from the side portion, and the tire also includes a reinforcing layer which includes plural cords covered by resin or rubber and which extends from the bead portion to the side portion of the tire frame member to cover at least an inner peripheral surface of the side portion.. ... Bridgestone Corporation

07/27/17 / #20170210170

Steel cord for reinforcing rubber article

Provided is a steel cord for reinforcing a rubber article in which both the rubber penetrability (rust prevention), and the cord strength and shear resistance are highly achieved. Provided is a steel cord for reinforcing a rubber article including: one core strand 11 having a layered-twisted structure formed by twisting a plurality of steel filaments 1; and a plurality of sheath strands 12 having a layered-twisted structure formed by twisting a plurality of steel filaments 2, wherein the sheath strands are twisted around the core strand. ... Bridgestone Corporation

07/27/17 / #20170210169

Steel cord for reinforcing rubber article

Provided is a steel cord for reinforcing a rubber article which can further improve cut resistance when applied to a tire. Provided is a steel cord for reinforcing a rubber article including: one core strand 11 having a layered-twisted structure formed by twisting a plurality of steel filaments 1; and a plurality of sheath strands 12 having a layered-twisted structure formed by twisting a plurality of steel filaments 2, wherein the sheath strands are twisted around the core strand. ... Bridgestone Corporation

07/27/17 / #20170210167

Tire

A tire includes a circular tire frame including a resinous material. The resinous material includes a thermoplastic elastomer including a hard segment (hs) and a soft segment (ss), and 55% or more of molecular chain terminals of the thermoplastic elastomer are hard segments (hs).. ... Bridgestone Corporation

07/20/17 / #20170204248

Anti-vibration rubber composition and anti-vibration rubber

The present invention provides an anti-vibration rubber composition containing: a rubber component containing 60% by mass or more of a diene rubber; a filler containing a carbon black and a silica, a content ratio (a/b) between the carbon black (a) and the silica (b) being 10/90 to 90/10 on a mass basis; and a hydrazine derivative, and an anti-vibration rubber obtained by curing the anti-vibration rubber composition.. . ... Bridgestone Corporation

07/20/17 / #20170204204

Processes for the removal of rubber from non-hevea plants

Provided herein are organic solvent-based processes for the removal of rubber from non-hevea plants such as guayule shrubs. By the use of the processes, solid purified rubber can be obtained that contains 0.05-0.5 weight % dirt, 0.2-1.5 weight % ash, and 0.1-4 weight % resin (when it has been dried so as to contain 0.8 weight % volatile matter).. ... Bridgestone Corporation

07/20/17 / #20170203617

Tyre comprising a foam material for sound absorption

A tyre comprising an impermeable layer suitable to ensure the sealing under pressure of the air contained in the inner cavity of the carcass and a foam material with auxetic characteristics, which is housed inside the cavity and suitable to provide sound absorption.. . ... Bridgestone Corporation

07/20/17 / #20170203614

Pneumatic tire

A pneumatic tire includes: two external circumferential main grooves in a vehicle-installed outside half portion; two internal circumferential main grooves in a vehicle-installed inside half portion; a central land portion; an external intermediate land portion; and an internal intermediate land portion. The central land portion is a rib-shaped land portion continuous in the tire circumferential direction. ... Bridgestone Corporation

07/13/17 / #20170198121

Rubber tire-tread composition and passenger-vehicle pneumatic tire using same

There is provided a rubber tire-tread composition comprising (a) a rubber component comprising 45% by mass or higher of one or more isoprene-based rubbers selected from the group consisting of natural rubbers and synthetic isoprene rubbers, and (b) one or more c5/c9-based petroleum resins selected from the group consisting of aromatic-modified aliphatic petroleum resins and aliphatic-modified aromatic petroleum resins in an amount of 5 to 50 parts by mass, and (c) a fatty acid metal salt in an amount of 0.5 to 10 parts by mass of, both based on 100 parts by mass of the rubber component.. . ... Bridgestone Corporation

07/13/17 / #20170198120

Method for manufacturing rubber composition, rubber composition obtained by same, and tire

The present invention provides a method for producing a rubber composition for tire tread, which is prepared by mixing 100 parts by mass of a rubber component containing 60 to 80 parts by mass of a natural rubber and 20 to 40 parts by mass of a modified conjugated dienic polymer having one or more functional groups having another atom than carbon and hydrogen, and 40 to 60 parts by mass of carbon black having a nitrogen adsorption specific surface area (n2sa) of 40 to 95 m2/g and a hydrogen release rate of 0.37% by mass or more based on 100 parts by mass of the rubber component, wherein the temperature of the rubber composition at the time of discharge in the kneading step for mixing carbon black therein is 170° c. Or higher, a rubber composition obtained according to the production method, and a tire using the rubber composition. ... Bridgestone Corporation

07/13/17 / #20170197480

Pneumatic tire

Provided is a pneumatic tire comprising a carcass 1 as a skeletal structure composed of at least one carcass ply extending toroidally between a pair of bead portions 11, at least one layer of a belt 2 located on the outer side of the carcass in the tire radial direction of the crown portion. The tire is provided with a cushion rubber 13c and a tread rubber 13g forming a tread portion in turn on the outer side of the belt in the tire radial direction, and a composite fiber 3 containing a conductive fiber and a non-conductive fiber is extended at least from the pair of bead portions to portions in contact with the cushion rubber or a pair of belt under cushions, so as to expose the composite fiber to both surfaces of the carcass at the outer and inner sides of the tire.. ... Bridgestone Corporation

07/13/17 / #20170197472

Tire

Heat radiation of circumferential direction grooves on a plurality of blocks on shoulder portion sides is enhanced. A block has a first wall surface formed from a position where a lateral groove is opened into a first circumferential direction groove toward an upstream side of an air flow, a second wall surface formed from a position where the lateral groove is opened into a second circumferential direction groove toward the upstream side of the air flow, and a block corner portion formed at a position where the lateral groove is opened into the first circumferential direction groove. ... Bridgestone Corporation

07/13/17 / #20170197466

Passenger-vehicle pneumatic radial tire

When the tire is assembled to a rim and filled with an internal pressure of 250 kpa or more, an sw/od ratio of the tire is 0.26 or less if the tire has a sectional width sw of less than 165 (mm), whereas a sectional width sw and an outer diameter od (mm) of the tire satisfy a relation of 2.135×sw+282.3≦od if the tire has a sectional width sw of 165 (mm) or more, the tread rubber has a dynamic storage modulus e′ at 30° c. Of 6.0 mpa to 12.0 mpa and a loss tangent tan δ at 60° c. ... Bridgestone Corporation

07/13/17 / #20170197465

Passenger-vehicle pneumatic radial tire

When the passenger-vehicle pneumatic radial tire of the disclosure is assembled to a rim and filled with an internal pressure of 250 kpa or more, an sw/od ratio is 0.26 or less if the tire has a sectional width sw of less than 165 (mm), whereas a sectional width sw and an outer diameter od (mm) of the tire satisfy a relation of 2.135×sw+282.3≦od if the tire has a sectional width sw of 165 (mm) or more, a dynamic storage modulus e′ at 30° c. Of the tread rubber is 6.0 mpa to 12.0 mpa and a loss tangent tan δ at 60° c. ... Bridgestone Corporation

07/06/17 / #20170190887

Rubber tire-tread composition and passenger-vehicle pneumatic tire using same

There is provided a rubber tire-tread composition comprising (a) a rubber component comprising 30% by mass or higher of one or more isoprene-based rubbers selected from the group consisting of natural rubbers and synthetic isoprene rubbers, and (b) at least one resin selected from the group consisting of rosin acid resins, c9-based petroleum resins, alkylphenol formaldehyde resins and terpene phenol resins in an amount of 5 to 50 parts by mass, and (c) a fatty acid metal salt in an amount of 0.5 to 10 parts by mass of, both based on 100 parts by mass of the rubber component.. . ... Bridgestone Corporation

07/06/17 / #20170190886

Rubber tire-tread composition and passenger-vehicle pneumatic tire using same

There is provided a rubber tire-tread composition comprising (a) a rubber component comprising 30% by mass or higher of one or more isoprene-based rubbers selected from the group consisting of natural rubbers and synthetic isoprene rubbers, and (b) one or more resins selected from the group consisting of c5-based resins and dicyclopentadiene resins in an amount of 5 to 50 parts by mass, and (c) a fatty acid metal salt in an amount of 0.5 to 10 parts by mass, both based on 100 parts by mass of the rubber component.. . ... Bridgestone Corporation

07/06/17 / #20170190221

Pneumatic tire

A pneumatic tire provided with, in a tread surface, at least two main circumferential grooves, and a first land portion defined by the two main grooves, wherein in the first land portion, the followings are disposed: a first inclined groove; inclining relative to a tire width direction, and having one end portion opening in the main groove on one side adjacent to the first land portion and the other end portion terminating within the first land portion, and a first notched portion; having one end in a tire width direction as a tip positioned at an endmost, in a tire width direction, of the other end portion of the first inclined groove and the other end in a tire width direction opening in the main groove on the other side adjacent to the first land portion.. . ... Bridgestone Corporation

07/06/17 / #20170190219

Agricultural tire

An agricultural tire according to an exemplary embodiment of the present invention is provided with plural lug blocks that are provided at a tread portion, and with protruding portions that protrude towards an outer side in a tire width direction from an end portion on the outer side in the tire width direction of the lug blocks, and that have a surface that, if an angle of a virtual straight line extending towards the outer side in the tire width direction is taken as 0°, faces a tire rotation direction at an angle of not less than 35° and not more than 55°.. . ... Bridgestone Corporation

07/06/17 / #20170189765

Multi-piece solid golf ball

In a multi-piece solid golf ball having a core, a cover and an intermediate layer therebetween, the core, an intermediate layer-encased sphere and the ball have surface hardnesses which satisfy a specific relationship, and the intermediate layer and the cover have thicknesses which satisfy a specific relationship. Also, the core has a hardness profile in which the hardnesses at the core surface, core center, a position 5 mm from the core center, and a position midway between the surface and center of the core satisfy specific relationships. ... Bridgestone Corporation

06/29/17 / #20170183510

Conductive roller coating composition, and developing roller and image formation device using same

. . Provided is a conductive roller coating composition which can reduce degradation of toner during durable printing when used for a developing roller, and a developing roller and image formation device using the same. In a conductive roller coating composition containing a resin component including a polyol and an isocyanate, and microparticles, a tg of the microparticles is −13° c. ... Bridgestone Corporation

06/29/17 / #20170183046

Rubber crawler

This disclosure is to provide a rubber crawler excellent in durability, in which projections are adhered to a crawler main body separately. The rubber crawler (10) according to this disclosure has a crawler main body (1) formed of vulcanized rubber and projections (3) formed of vulcanized rubber, the crawler main body (1) having a ridge (1c) on an inner circumferential surface (1b), the projections (3) being attached via an adhesion means (m3) to the ridge (1c) of the crawler main body (1).. ... Bridgestone Corporation

06/29/17 / #20170182848

Irrigation tire

A non directional pneumatic tire is provided for an agricultural irrigation system. The tire includes first and second side walls and a radially outer wall defining an internal inflation chamber. ... Bridgestone Corporation

06/29/17 / #20170182372

Multi-piece solid golf ball

In a multi-piece solid golf ball having a core, an envelope layer, an intermediate layer, and a cover with a plurality of dimples thereon, the core is a two-layer core consisting of an inner core layer and an outer core layer each formed primarily of a base rubber, the envelope layer, the intermediate layer and the cover layer are each composed of at least one layer and formed primarily of a synthetic resin material, and the initial velocities and surface hardnesses of the core, the envelope layer-encased sphere and the intermediate layer-encased sphere are designed within specific ranges. This golf ball satisfies at a very high level the flight and control performances expected for use by professional golfers and skilled amateurs, has the ability to move forward on a straight path particularly on full shots, and also has an excellent scuff resistance.. ... Bridgestone Corporation

06/29/17 / #20170182367

Golf ball resin composition and golf ball

A golf ball resin composition includes (a) a styrene-based thermoplastic elastomer having a shore d hardness of not more than 48 and (b) a thermoplastic resin having a shore d hardness of at least 49 and containing either styrene monomer units or diene monomer units on the molecule, in a compounding ratio a/b therebetween of from 85/15 to 15/85. Using this resin composition as a golf ball cover material provides the ball with an excellent controllability around the green on shots with a short iron such as a sand wedge. ... Bridgestone Corporation

06/29/17 / #20170182366

Golf ball and resin composition for cover or topcoat thereof

A resin composition for a cover or topcoat of golf balls includes: a resin for a cover or topcoat of a golf ball; an ultraviolet (uv) absorber for absorbing uv rays, of which an absorbance spectrum has an absorption peak at a wavelength in a range of 310 nm to 330 nm, has an absorbance in a wavelength range of 300 nm to 350 nm of at least 1.0 au and has an absorbance at a wavelength of 370 nm of 0.1 to 0.5 au; and a fluorescent whitening agent for absorbing uv rays and emitting visible rays, of which an absorbance spectrum has an absorption peak at a wavelength in a range of 350 nm to 370 nm, wherein a concentration of the uv absorber ranges from 0.25 to 1.5% by mass with respect to a total mass of the resin composition.. . ... Bridgestone Corporation

06/22/17 / #20170176175

Automated tire buffing identification apparatus and method

Systems and methods of identifying and buffing tire casings are provided. A tire buffing machine includes an expandable rim, a buffer, a measurement sensor configured to generate measurement data, and a controller. ... Bridgestone Corporation

06/22/17 / #20170173909

Expandable rim width insert

A machine for retreading tires includes a rotatable hub and an expandable rim disposed around the moveable hub. The expandable rim includes a plurality of shoes, each shoe having a flange segment on either side of a rim segment of the plurality of shoes. ... Bridgestone Corporation

06/22/17 / #20170173907

Self correcting tire buffing apparatus and method

Systems and methods of buffing tire casings are provided. A tire buffing machine includes a tire hub assembly selectively rotating a mounted casing, a buffer configured to buff the casing, a first measurement subsystem with at least one electromagnetic transmitter and sensor directed toward at least one belt in the casing, a second measurement subsystem directed toward a pre-buff location and a post-buff location on the casing surface, and an electronic controller. ... Bridgestone Corporation

06/22/17 / #20170173903

Automatic system and method for mounting and dismounting tire casing on expandable rim hub in retreading operations

A loader device includes a support pedestal movable over a range of longitudinal travel along a longitudinal axis, a support carriage movably mounted to the support pedestal, a loader actuator, and a dismount actuator. The support carriage is movable over a range of vertical travel along a normal axis, which is perpendicular to the longitudinal axis. ... Bridgestone Corporation

06/22/17 / #20170173404

Golf ball

The invention provides a golf ball having a core and a cover of one or more layer encasing the core, wherein, letting hu-a and hu-b be respectively the martens hardnesses measured at positions 100 μm and 200 μm inward from a surface of an outermost layer of the cover and toward a center of the core, and letting hu-c be the martens hardness measured at a position 100 μm from an inner side of the outermost cover layer and toward the surface, hu-a or hu-b is harder than hu-c.. . ... Bridgestone Corporation

06/22/17 / #20170173399

Golf ball

The invention provides a golf ball having a core and a cover of one or more layer encasing the core, wherein the cover has an outermost layer molded of a thermoplastic material selected from the group consisting of polyurethane, polyurea and mixtures thereof and, letting the absorbance peak heights near a wave number of 1512 cm−1 measured by the attenuated total reflectance method in fourier transform infrared absorption spectroscopy (ft-ir/atr spectroscopy) at an outside portion and an inside portion of the outermost cover layer be respectively p1 and p2, the value p1−p2 is at least 0.02.. . ... Bridgestone Corporation

06/15/17 / #20170167564

Vibration-damping device

A partitioning member (16) of a vibration-damping device (10) is provided with a communication chamber (30), a first communication hole (31) and a second communication hole (32). The first communication hole (31) and the second communication hole (32) are arranged to be offset from each other in the axial direction (o). ... Bridgestone Corporation

06/15/17 / #20170166733

Rubber compounds containing silicon dioxide for the production of tyres

A rubber compound containing silicon dioxide for the production of tyres, comprising at least one polymer base with cross-linkable unsaturated chain, silicon dioxide, a silane bonding agent, a vulcanization system and lignin comprising, in turn, at least part of its aromatic rings substituted with amine substituents.. . ... Bridgestone Corporation

06/08/17 / #20170160079

Method for correcting surface shape data of annular rotating body and apparatus for inspecting appearance of annular rotating body

A method for correcting annular rotating body's surface shape data in correcting three-dimensional shape data on annular rotating body's surface, a reference line is set along the surface to detect the annular rotating body, and then reference equiangular division points are set. The circumferential length of reference line is calculated from distance between adjacent reference equiangular division points, and a plurality of reference equidistant division points, which divide reference line into equal lengths, are set on reference line. ... Bridgestone Corporation

06/08/17 / #20170158787

Catalyst systems and methods for preparation of 1,4-polybutadiene rubber

Embodiments of methods of producing 1,4-polybutadiene comprise polymerizing a solution comprising conjugated diene monomer and organic solvent to yield 1,4-polybutadiene having a cis content of between about 92% to about 98%, a vinyl content of about 1% to about 5%, a trans content of about 1 to about 3%, a molecular weight distribution (mwd) of about 3 to about 5, and a mooney viscosity (ml1+4) at 100° c. Of less than 60. ... Bridgestone Corporation

06/08/17 / #20170157996

Tyre comprising a foam material for sound absorption

A tyre comprising a layer suitable to ensure the sealing under pressure of the air contained in the inner cavity of the carcass and a foam material for sound absorption based on a polycondensate of polyphenolic compounds of natural or synthetic origins housed inside said inner cavity. Preferably, the foam material is based on flavonoid tannins.. ... Bridgestone Corporation

06/08/17 / #20170157985

Pneumatic tire

A pneumatic tire in which a side reinforcement layer formed of a treated member is arranged, the treated member formed by coating with rubber organic fiber cords extending parallelly to ply cords of a carcass ply of the carcass main body, only on a sidewall portion of a half portion on one tire widthwise side; a tire radial inner end of the side reinforcement layer is located on a side inner in the tire radial direction than a tire radial outermost position of a rim flange, and a tire radial outer end of the side reinforcement layer overlaps the belt by 5 mm or more in a tire widthwise direction; and the tread portion has one or more circumferential main grooves, and a contact width of a tire widthwise outermost land portion is larger than a contact width of a tire widthwise outermost land portion.. . ... Bridgestone Corporation

06/01/17 / #20170152326

Processes for the removal of rubber from tks plant matter

Provided herein are organic solvent-based processes for the removal of rubber from non-hevea plants such as tks. By the use of the processes, solid purified rubber can be obtained that contains 0.05-0.5 weight % dirt, 0.2-1.5 weight % ash, and 0.1-4 weight % resin (when it has been dried so as to contain 0.8 weight % volatile matter).. ... Bridgestone Corporation

06/01/17 / #20170151987

Elastic crawler

An elastic crawler includes an endless elastic body; cores that each include a core body and a pair of protrusions; lugs, on the outer circumferential side of the elastic body, each disposed so as to avoid a crawler circumferential direction area corresponding to at least a portion of the core in the crawler circumferential direction; and grooves, on the crawler inner circumferential surface, each positioned outward in the crawler width direction from the pair of protrusions in a crawler circumferential direction area corresponding to the core, each of the grooves being recessed relative to crawler inner circumferential surface portions adjacent to the groove on both sides in the crawler circumferential direction.. . ... Bridgestone Corporation

06/01/17 / #20170151837

Tire with belt having wrap around gum strip

A tire includes a circumferential tread, a pair of beads, and a pair of sidewalls. The tire further includes a plurality of circumferential belts disposed below the circumferential tread and extending in an axial direction. ... Bridgestone Corporation

06/01/17 / #20170151835

Tire

Provided is a tire having improved strength through use of polyamide 4 fiber. The tire contains a fiber-rubber composite including polyamide 4 fiber that contains polyamide 4.. ... Bridgestone Corporation

05/18/17 / #20170137600

Modified polyvinyl alcohol resin composition, film, and tire

. . The purpose of the disclosure is to provide a modified polyvinyl alcohol resin composition having high gas barrier properties as well as excellent flexibility, adhesiveness and fatigue resistance. The modified polyvinyl alcohol resin composition includes: a modified polyvinyl alcohol resin obtainable by introducing a linear chain, alicyclic, branched or aromatic functional group having 3 to 20 carbon atoms, as a graft chain, into a polyvinyl alcohol as a main chain; and silica.. ... Bridgestone Corporation

05/18/17 / #20170137552

Multicomponent copolymer, rubber composition, and tire

Provided is a polymer that contributes to the improvement of the durability and weather resistance of rubber compositions or rubber products such as a tire, and has low crystallinity. Disclosed is a multicomponent copolymer comprising a conjugated diene unit, a non-conjugated olefin unit, and an aromatic vinyl unit, wherein the multicomponent copolymer has a main chain consisting only of an acyclic structure, and the content of cis-1,4 bonds in the entire conjugated diene unit is 50% or more.. ... Bridgestone Corporation

05/18/17 / #20170136826

Pneumatic tire

A block segment sections and outer rib-shaped sections are arranged in an outer shoulder land section. An end portion of one of vertical groove sections in one of l-shaped groove sections, which is at the other side in the tire circumferential direction communicates with one of the horizontal groove sections in another l-shaped groove section of the l-shaped groove sections, which is adjacent to the l-shaped groove section in the tire circumferential direction, via one of second communicating sections. ... Bridgestone Corporation

05/18/17 / #20170136814

Non-pneumatic tire

A non-pneumatic tire (11), includes: a mount body (111) that is mounted on a shaft (s); an outer cylindrical body (113) encircling the mount body from outside thereof in a radial direction of the tire; connecting members (115) arranged in a circumferential direction of the tire therebetween and connecting the mount body and the outer cylindrical body such that the mount body and the outer cylindrical body are resiliently movable relative to each other; and a cylindrical tread portion (116) encircling the outer cylindrical body from outside thereof in the radial direction of the tire. In addition, the outline of a cross-section of an outer surface (116c) of a central area (129) of the tread portion taken in a width direction of the tire is a curved line bulging outward in the radial direction of the tire, and the central area includes at least a tire equator (e).. ... Bridgestone Corporation

05/18/17 / #20170136750

Laminated body, conductive roller, and method for manufacturing laminated body

Provided are a laminated body that can improve the adhesive force between the base layer and the surface layer, a conductive roller provided with the laminated body, and a method for manufacturing a laminated body with improved adhesive force between the base layer and the surface layer. The disclosed laminated body includes a base layer and a surface layer formed on the base layer, the base layer includes polyurethane having a (meth)acryloyl group, the surface layer includes a radical curable resin obtained by polymerizing (meth)acrylate that has a (meth)acryloyl group, and the laminated body is formed by the (meth)acryloyl group in the polyurethane reacting with the (meth)acryloyl group in the (meth)acrylate.. ... Bridgestone Corporation

05/18/17 / #20170136667

Foamed resin molding manufacturing method and foamed resin molding

To provide a foamed resin molding manufacturing method that attains simplification of work of setting a covering material locking clip to a foamed resin molding. A method for manufacturing a foamed resin molding that is provided in advance with a covering material locking clip has: a temporary fastening step of temporarily fastening the clip (12) to a clip installation jig (10): a jig installing step of installing the clip installation jig (10) with the clip (12) temporarily fastened thereto in a forming die (16) such that the clip (12) is located at a determined positon; a molding step of injecting foamed resin into the forming die (16) to mold the foamed resin molding (18): and a step of removing the clip installation jig (10) from the foamed resin molding (18) after the foamed resin molding (18) is demolded.. ... Bridgestone Corporation

05/18/17 / #20170136312

Multi-piece solid golf ball

In a multi-piece solid golf ball having a two-layer core consisting of an inner layer and an outer layer, a cover, at least one intermediate layer between the core and the cover, and a paint film layer formed on the cover surface, each layer of the two-layer core is formed primarily of a rubber composition, the intermediate layer and the cover are each formed primarily of a resin material, the core has a hardness profile which satisfies specific conditions, and the sphere consisting of the core encased by the intermediate layer has a higher surface hardness than the ball. When used by mid- to high-level golfers, this ball achieves sufficient reduction in the spin rate on full shots with a driver, enabling the distance to be increased, and the spin performance on approach shots is excellent, enhancing the enjoyability of the game.. ... Bridgestone Corporation

05/11/17 / #20170132586

Tire selection decision support system and method

. . . . A decision support system initially determines in response to the creation of a customer ticket a customer's driving style in accordance with user responses and input regarding driving habits and preferences, and calculates a driving style algorithm. The system compares the driving style algorithm to car tire profiles and determines which tires are best suited to the customer's driving style algorithm. ... Bridgestone Corporation

05/11/17 / #20170129981

Method for producing a multicomponent copolymer

Provided is a method for producing a multicomponent copolymer comprising copolymerizing a conjugated diene compound, a non-conjugated olefin compound, and an aromatic vinyl compound to produce a multicomponent copolymer having a main chain consisting of an acyclic structure.. . ... Bridgestone Corporation

05/11/17 / #20170129290

Tire

A pneumatic tire includes a bead part having a bead core, and a carcass layer folded around the bead core in the bead part. The bead part includes a bead inner-face part defined as a region at an inner side of the carcass layer in a tire width direction and at an outer side of a bead toe in a tire radial direction, a bead base part defined as a region at an inner side of the carcass layer in the tire radial direction and at an outer side of the bead toe in the tire width direction, and a high-hardness rubber layer having hardness higher than hardness of the bead base part and provided in at least a part of the bead inner-face part.. ... Bridgestone Corporation

05/11/17 / #20170129285

Tire

A non-pneumatic tire includes:a ring member (14) including an inner cylinder (12) externally covering an attachment body (11) to be attached to an axle and an outer cylinder (13) surrounding the inner cylinder (12) from a tire radial outer side; a plurality of connecting members (15) arranged along a tire circumferential direction between the inner cylinder (12) and the outer cylinder (13) and connecting the two cylinders to each other; and a tread member (16) made of vulcanized rubber and located on a tire radial outer side of the outer cylinder (13), wherein at least one part of the outer cylinder (13) and the plurality of connecting members (15) are integrally formed of a synthetic resin material, and an adhesion layer (25) containing an epoxy-based adhesive agent is located between the tread member (16) and the outer cylinder (13) having an amino group in a surface thereof.. . ... Bridgestone Corporation

05/11/17 / #20170129198

Tire building drum

A tire building drum (10) is used to build a large green tire. The tire building drum (10) comprises: a cylindrical drum main body (12) haying an outer peripheral surface (14) a diameter of which is capable of being increased and reduced; and a coating (16) formed on the outer peripheral surface of the drum main body. ... Bridgestone Corporation

05/11/17 / #20170128791

Golf club head

A golf club head includes: a crown portion; a sole portion; a face portion; and a hosel portion. The crown portion includes a concave portion that starts from the face portion, passes through a boundary portion of the hosel portion and the crown portion, and extends toward a back side. ... Bridgestone Corporation

05/11/17 / #20170128790

Golf club head

A golf club head includes a crown portion and a face portion. The crown portion includes a first protruding portion arranged on the side of the face portion, and a second protruding portion arranged on the back side to be adjacent to the first protruding portion. ... Bridgestone Corporation

05/11/17 / #20170128789

Golf club head

A golf club head comprises two weight members, and in a reference plan view where a sole part faces upward and a hosel hole central axis extension line is vertical, a reference imaginary straight line, a first imaginary straight line and a second imaginary straight line are set. The reference imaginary straight line passes through a central axis of a hosel hole and a head gravity center is determined when weight members are not attached. ... Bridgestone Corporation

05/04/17 / #20170121904

Brass-plated steel wire for reinforcing rubber articles

. . This disclosure is to provide a brass-plated steel wire for reinforcing a rubber article, which is capable of improving the initial adhesiveness, heat-resistant adhesiveness and initial adhesion rate. This disclosure is a brass-plated steel wire for reinforcing a rubber article, wherein: when measured with xps (x-ray photoelectron spectroscopy), an outermost surface contains zinc at an amount of 4.8 atom % or less, phosphorus at an amount of 0.5 atom % or more, and oxygen at an amount of 50 atom % or less; and in the outermost surface, an atomic ratio of copper to zinc is 1 to 6.. ... Bridgestone Corporation

05/04/17 / #20170121597

Wavelength conversion material and solar cell sealing film containing the same

Provided is a wavelength conversion material composed of resin particles comprising an acrylic resin and an organic rare earth complex contained in the acrylic resin, in which deterioration of the organic rare earth complex is prevented. A wavelength conversion material composed of resin particles comprising an acrylic resin and an organic rare earth complex contained in the acrylic resin, wherein the acrylic resin is a polymer which is a reaction product of an acrylic resin composition comprising a (meth)acrylate monomer, a crosslinking agent and an azo polymerization initiator, wherein the acrylic resin composition is substantially free of an organic peroxide having a group represented by r—c(═o)o— where r represents a hydrocarbon group that may be optionally substituted, as a polymerization initiator, and the acrylic resin composition comprises an organic peroxide having a one-minute half-life temperature of 145° c. ... Bridgestone Corporation

05/04/17 / #20170121506

Rubber compound to produce tyres

A rubber compound for tyres comprising at least a cross-linkable polymer base, a reinforcing filler, a reinforcing resin and a vulcanization system comprising at least sulphur and an organic peroxide chemical.. . ... Bridgestone Corporation

05/04/17 / #20170121482

Soft polyurethane foam and seat pad

The present invention provides a soft polyurethane foam which is obtained by expansion molding a starting foam liquid that contains a polyol, a polyisocyanate, a crosslinking agent, a foaming agent and a catalyst. This soft polyurethane foam is configured such that: a polyether polyol having a weight-average molecular weight (mw) of 3,000 to 12,000 and 3.5 to 4 functional groups is contained therein as the polyol; the value of (ethylene oxide groups)/(propylene oxide groups) (in terms of a molar ratio) in all compounds contained therein as the crosslinking agent is 100 or more; a short-chain polyol having a weight-average molecular weight of 1,000 or less is contained therein as the crosslinking agent; and tolylene diisocyanate is contained therein as the polyisocyanate in an isocyanate index of 70 or more.. ... Bridgestone Corporation

05/04/17 / #20170121477

Laminate and tire

A laminate having high ozone crack resistance and excellent in flexibility and fatigue resistance is provided. The laminate includes: a coating film 12 containing modified polyvinyl alcohol grafted by a functional group that is linear-chain, cycloaliphatic, branched, or aromatic and has a molecular weight of 20 to 10000; and a rubber layer 11 in contact with the coating film 12.. ... Bridgestone Corporation

05/04/17 / #20170121465

Graft copolymer, resin composition, coating film, laminate and tire

Provided is a graft copolymer having excellent flexibility, adhesiveness and fatigue resistance while having a high gas barrier property. In the disclosure, a synthetic rubber is introduced, as a graft chain, to a main chain of one or more types of resins selected from a group consisting of polyacrylic acid, polyamide resin, cellulosic resin, polyvinylalcohol resin, ethylene polyvinylalcohol resin, acrylate resin and urethane resin, via a terminal portion of the synthetic rubber.. ... Bridgestone Corporation

05/04/17 / #20170121448

Soft polyurethane foam and sheet pad

The present invention provides a soft polyurethane foam that is obtained by foam molding a foaming stock solution containing a polyol, a polyisocyanate, a cross-linking agent, a foaming agent, and a catalyst in which: a polyether polyol having a weight-average molecular weight (mw) of 3,000 to 12,000 and having three to four functional groups is contained; a molar ratio of ethylene oxide groups/propylene oxide groups in all the compound contained as the cross-linking agent is 100 or more; and diphenylmethane diisocyanate is contained in an isocyanate index of 70 or more.. . ... Bridgestone Corporation

05/04/17 / #20170120693

Tire

The pneumatic tire has a carcass ply and a tread part. The carcass ply includes a main body ply reaching from a tread part to a bead core, and a folded ply folded around the bead core. ... Bridgestone Corporation

05/04/17 / #20170120686

Tire with variable width grooves

A tire includes a pair of sidewalls and a circumferential tread having a zigzag circumferential groove. The zigzag circumferential groove is defined by a groove bottom, a pair of groove walls, and a pair of groove edges defining an intersection between each groove wall and a top surface of the circumferential tread, wherein each of the groove edges smoothly widens and narrows along the groove. ... Bridgestone Corporation

05/04/17 / #20170120685

Pneumatic tire

In this pneumatic tire, width direction sipes (9) on one side in the tread circumferential direction are shifted in position in a central land portion row (3a) and intermediate land portion rows (3b1, 3b2), first and second width direction grooves (4a, 4b) and the width direction sipes (9) on the one side are shifted in position in the tread circumferential direction in the central land portion row (3a), minute blocks (9a) in the central land portion row (3a) are aligned in position in the tread circumferential direction with minute blocks (9a) or third width direction grooves (4c1, 4c2) in the intermediate land portion rows (3b1, 3b2), and fifth width direction grooves (10a, 10b) and width direction shallow grooves (11a, 11b) are aligned in position in the tread circumferential direction with fourth width direction grooves (4d1, 4d2) or minute blocks (9a) in the intermediate land portion rows (3b1, 3b2).. . ... Bridgestone Corporation

05/04/17 / #20170120684

Tire

A tire having v-shaped lug grooves displays both improved grip performance on snow and anti-hydroplaning performance. To that end, an absolute value of difference between a lug groove diagonal angle (θlg), which is an angle of diagonal lug grooves (13) in a tread (11) surface with respect to a tire axial direction, and a profile line diagonal angle (θfp), which is an angle of a normal line of a leading-end profile line of a contact patch shape of the tire (10) with respect to the tire axial direction, is set to 0° or more and 60° or less at respective positions in the tire axial direction. ... Bridgestone Corporation

05/04/17 / #20170120681

Tire

A non-pneumatic tire includes: a ring member (14) including an inner cylinder (12) externally covering an attachment body (11) to be attached to an axle and an outer cylinder (13) surrounding the inner cylinder (12) from a tire radial outer side; a plurality of connecting members (15) arranged along a tire circumferential direction between the inner cylinder (12) and the outer cylinder (13) and connecting the two cylinders to each other; and a tread member (16) made of vulcanized rubber and located on a tire radial outer side of the outer cylinder (13), wherein at least one part of the outer cylinder (13) and the plurality of connecting members (15) are integrally formed of a synthetic resin material, and an adhesion layer (25) containing a cyanoacrylate-based adhesive agent is located between the tread member (16) and the outer cylinder (13) having an amino group in a surface thereof.. . ... Bridgestone Corporation

05/04/17 / #20170120680

Non-pneumatic tire

A non-pneumatic tire (1) includes an attachment body attached to an axle, a ring-shaped body (13) configured to surround the attachment body from the outside in a tire radial direction, a connecting member (15) configured to connect the attachment body and the ring-shaped body while allowing displacement therebetween, and a cylindrical tread member (16) installed outside the ring-shaped body, wherein an outer circumferential surface of the tread member has a plurality of curved surface sections (41) to (42) that are continuously formed in a tire width direction (h) with no step difference and formed in a shape protruding outward in the tire radial direction when seen in a cross-sectional view in the tire width direction, the plurality of curved surface sections have different radii of curvature in the tire width direction when seen in the cross-sectional view, and in the plurality of curved surface sections, and intermediate curved surface sections (42) disposed between a central curved surface section (41) disposed at a central portion in the tire width direction and shoulder curved surface sections (43) disposed outside in the tire width direction have a radius (r2) of curvature larger than radii of curvature (r1) and (r3) of the other curved surface sections when seen in the cross-sectional view.. . ... Bridgestone Corporation

04/27/17 / #20170114213

Keratin in rubber applications

A rubber composition includes an elastomer having an elongation at break (eb) of about 50% or more according to astm-d 412 at 25° c., a water-insoluble keratin, and a reinforcing filler. A tire component including the composition and a method for making the composition are also disclosed.. ... Bridgestone Corporation

04/27/17 / #20170114207

Rubber compounds containing silicon dioxide for the production of tyres

A method for preparing a rubber compound comprising at least one first mixing step in which at least part of a cross-linkable polymer base is mixed at least with a reactive reinforcing filler, a dendrimer functionalized with polar groups adapted to interact with the reactive reinforcing filler and a nucleophile agent; and a subsequent mixing step in which the compound being prepared is mixed with a vulcanization system.. . ... Bridgestone Corporation

04/27/17 / #20170114178

Polyurethane foam

Using general purpose raw materials, a polyurethane foam having higher water stopping properties than conventional ones is provided. The polyurethane foam is a polyurethane foam obtained by foaming and curing a composition containing a polyol component, an isocyanate component, a foam stabilizer, a cross-linking agent, and a catalyst.. ... Bridgestone Corporation

04/27/17 / #20170114171

Metallic complex catalyst and polymerization methods employing same

Metallic complexes having indenyl ligands can be used as an ingredient of a catalyst system. The catalyst system can be used in polymerizations of ethylenically unsaturated hydrocarbon monomers that include both olefins and polyenes. ... Bridgestone Corporation

04/27/17 / #20170114170

Metallic complex catalyst, polymerization methods employing same and polymer products thereof

Metallic complexes having indenyl ligands can be used as an ingredient of a catalyst system. The catalyst system can be used in polymerizations of ethylenically unsaturated hydrocarbon monomers that include both olefins and polyenes. ... Bridgestone Corporation

04/27/17 / #20170113744

Crawler track shoe core metal, resilient crawler track shoe, and crawler track shoe core metal manufacturing method

A crawler track shoe core metal is plate shaped and is clamped and fixed by a fixing member to a moving link provided at a travelling body. The crawler track shoe core metal includes a cutout portion, a through-hole, and a raised portion. ... Bridgestone Corporation

04/27/17 / #20170113492

Pneumatic tire

The interval along the tire circumferential direction between sipes adjacent in the tire circumferential direction is 2 to 10 times the depth of the sipes. In the depth direction of the sipes, the sipes each have at least three sipe portions divided by at least two bent portions, and a bent portion angle formed between adjacent sipe portions with one of the bent portions therebetween is greater at the tread surface side than at the sipe bottom side.. ... Bridgestone Corporation

04/27/17 / #20170113100

Multi-piece solid golf ball

A golf ball having a core, a cover and at least one intermediate layer therebetween satisfies specific conditions concerning the relative surface hardnesses of the core, the intermediate layer-encased sphere and the ball, and has a specific core hardness profile. Also, the value v/h, where v is the initial velocity of the ball and h is the deflection of the ball under specific loading, is set within a specific range. ... Bridgestone Corporation

04/20/17 / #20170106615

Pneumatic tire and method for manufacturing pneumatic tire

This disclosure is to provide a method for manufacturing a pneumatic tire without generation of end material when manufacturing an inner liner. The method for manufacturing a pneumatic tire according to this disclosure, which arranges an inner liner on an inner circumferential surface of a tire molded body, includes a cutting process of cutting in a widthwise direction a strip-like resin film having a thermoplastic resin film layer, at a constant spacing in a longitudinal direction of the resin film; a joining process of joining uncut edges of a plurality of resin film pieces generated in the cutting process; and a process of arranging the inner liner generated in the joining process on the inner circumferential surface of the tire molded body.. ... Bridgestone Corporation

04/20/17 / #20170106614

Mold for rubber article, method for manufacturing tire, and tire

Provided are a mold for molding a rubber article capable of ensuring the discharge of air (gas) during cure-molding of uncured rubber and improving the appearance of the rubber article after the cure-molding by preventing spews from occurring after the cure-molding, a method for manufacturing a tire using this mold for a rubber article and a tire molded with this mold for a rubber article. The mold for molding a rubber article has a molding surface for molding uncured rubber and has air vent holes penetrating from the molding surface to the back surface. ... Bridgestone Corporation

04/20/17 / #20170106245

Golf ball

In a multi-piece solid golf ball having a core, a cover and an intermediate layer therebetween, letting hc be the jis-c hardness at the core center, h12 be the jis-c hardness at a position 12 mm from the core center and ho be the jis-c hardness at the core surface, the core has a hardness profile which satisfies the conditions 0≦h12−hc≦15, 15≦ho−h12≦30, (ho−h12)−(h12−hc)≧10 and 20≦ho−hc≦40. Also, letting a be the value represented by (ho−h12)−(h12−hc), the spin index of the ball, defined as the dynamic coefficient of friction for the ball multiplied by a, is at least 3.0. ... Bridgestone Corporation

04/13/17 / #20170101736

Brass-plated steel wire for reinforcing rubber article

This disclosure is to provide a brass-plated steel wire for reinforcing a rubber article, which is capable of improving overvulcanization adhesiveness. This disclosure is a brass-plated steel wire for reinforcing a rubber article, wherein: when measured with xps (x-ray photoelectron spectroscopy), an outermost surface contains zinc at an amount of 4.93 to 14 atom %, and contains oxygen at an amount of 50 atom % or less; and in the outermost surface, an atomic ratio of copper to zinc is more than 2.33 and 6 or less.. ... Bridgestone Corporation

04/13/17 / #20170101527

Rubber composition and tire

Provided is a rubber composition that has high weather resistance and crack growth resistance. The rubber composition contains a diene based rubber, a non-diene based rubber, and a reinforcing filler. ... Bridgestone Corporation

04/13/17 / #20170101500

Multiblock copolymer, rubber composition, and tire

A multiblock copolymer, obtainable by copolymerization of a conjugated diene compound and a non-conjugated olefin, wherein: a structure of the multiblock copolymer includes a-(b-a)x and/or b-(a-b)x, wherein “a” represents a block portion constituted of monomer units of a non-conjugated olefin, “b” represents a block portion constituted of monomer units of a conjugated diene compound, and “x” represents an integer ≧1; content of the non-conjugated olefin portion is ≦30 mass %; and storage modulus g′ at 130° c., measured by rubber process analysis using a rubber process analyzer, i.e. Rpa, according to astm d6204, is ≧20 kpa. ... Bridgestone Corporation

04/13/17 / #20170101040

Soft polyurethane foam molded article and seat pad

The present invention provides a soft polyurethane foam molded atticle which has a mounting surface (1a) can be obtained by foaming and molding a raw foaming liquid, and has a constitution which a ratio of a diameter of a foaming cell in the horizontal direction x along the mounting surface (1a) to a diameter of the foaming cell in the vertical direction y orthogonal to the mounting surface (1a) increases toward the mounting surface (1a) in the vertical direction (y).. . ... Bridgestone Corporation

04/13/17 / #20170100969

Run-flat radial tire

A run-flat radial tire having a tire cross-section height of 115 mm or greater including: a carcass spanning between a pair of bead portions; a vehicle mounting direction outer side side-reinforcing rubber layer that is provided to a tire side portion at a vehicle mounting direction outer side and that extends in a tire radial direction along an inner face of the carcass; and a vehicle mounting direction inner side side-reinforcing rubber layer that is provided to a tire side portion at a vehicle mounting direction inner side and that extends in the tire radial direction along an inner face of the carcass, a tire radial direction outer side end portion of the vehicle mounting direction inner side side-reinforcing rubber layer being closer to a tire equatorial plane than a tire radial direction outer side end portion of the vehicle mounting direction outer side side-reinforcing rubber layer.. . ... Bridgestone Corporation

04/13/17 / #20170100966

Pneumatic tire

A pneumatic tire includes a tread having a tread surface, circumferential main grooves on the tread, and land portions formed between the circumferential main grooves. Each of the circumferential main grooves has, in a lateral cross-sectional view, a groove bottom surface, an outside groove wall surface, an inside groove wall surface, an outside curved portion connecting the groove bottom surface with the outside groove wall surface, and an inside curved portion connecting the groove bottom surface with the inside groove wall surface. ... Bridgestone Corporation

04/13/17 / #20170100860

Filling member and method of manufacturing seat pad using the filling member

A seat pad which can provide a favorable seating feeling while adhesion between a breathable member and a resin foam constituting the seat pad is ensured and a method of manufacturing such a seat pad are provided. A filling member including a breathable member having a ventilation function to an outside, used in a molding process of the seat pad for a vehicle integrally molded from a foam made of a foamable resin in a state where the breathable member is placed therein, and removed after the molding, is characterized by including a frame-shaped body attached to a peripheral side surface of an outside exposed surface of the breathable member and installed on a molding surface of a mold and a side-surface covering body installed upright on the frame-shaped body and partially covering a side surface of the breathable member.. ... Bridgestone Corporation

04/06/17 / #20170098017

Method for evaluating golf ball dimple effects

A method for evaluating dimple effects on a golf ball includes the steps of: setting up, in a computer, a geometric model representing a dimple that is a concave or convex region and a virtual airflow space which surrounds a periphery of the dimple model; generating a grid in the virtual airflow space and configuring the grid so as to be finer near the dimple model surface and coarser away from the surface; establishing a state where an air stream flows into the virtual airflow space; calculating the momentum thickness in a given plane passing through the dimple; and rating the dimple effects highly when the dimple model has a low momentum thickness. This method directly evaluates the shape of the dimples alone, and thus is simple and can shorten the evaluation time while ensuring good accuracy,. ... Bridgestone Corporation

03/30/17 / #20170089421

Vibration-damping device

A vibration-damping device (10) in the present application includes a first limiting passage (51) and a second limiting passage (52). The first limiting passage (51) includes pressure loss units (53a, 53b). ... Bridgestone Corporation

03/30/17 / #20170087940

Tire

A tire with improved uneven wear resistance has a designated tire rotation direction and includes inclined grooves in both halves of the tread surface divided by the tire equatorial plane, the inclined grooves extending inward in the tire width direction from the tread surface edge side, being inclined opposite the tire rotation direction, and being aligned in the tire circumferential direction; and an inter-inclined-groove land portion formed between each pair of inclined grooves that are adjacent in the tire circumferential direction. Along a land portion edge of the inter-inclined-groove land portion on the tire rotation direction side thereof, a point p1 located ¾ of the tread half-width from the tire equatorial plane in the tire width direction is positioned on the tire rotation direction side of a point p2 located ¼ of the tread half-width from the tire equatorial plane in the tire width direction.. ... Bridgestone Corporation

03/30/17 / #20170087938

Pneumatic tire

Provided is a pneumatic tire in which a cord including an aramid fiber is used for a reinforcing cord for a carcass ply, and the cut resistance, the steering stability, and the light-weightness are improved. Provided is a pneumatic tire 10 including a carcass 4 composed of at least one carcass ply as a skeleton, and a reinforcing cord of the carcass ply includes an aramid fiber, and the upper twist coefficient t represented by the following formula: t=n×√{(0.125×d/2)/ρ}×10−3 (in the formula, n represents the twist count (count/10 cm) of the cord, d represents the total fineness of the cord, and ρ represents the density of the cord) is 0.5 or higher, the total fineness is 1,800 dtex or lower, and the end count of the reinforcing cord in the carcass ply is 55 counts/5 cm or larger.. ... Bridgestone Corporation

03/30/17 / #20170087785

Pressure device for tire constituent member and tire forming apparatus

Each of a plurality of pressure rolls is displaced around the shaft member and pressurizes the tire constituent member. Each of a plurality of supporting parts supports the pressure roll rotatably from the inside of the pressure roll and is displaced integrally with the pressure roll. ... Bridgestone Corporation

03/23/17 / #20170082526

Method for predicting remaining life of hose and method for diagnosing deterioration level of hose

. . . . Provided is a method for predicting the remaining life of a hose and a method for diagnosing the deterioration level of a hose that can be easily performed without breaking the hose. The disclosure includes: a testing step of performing a hose bending test; and a predicting step of predicting the remaining life of a hose subject to prediction, wherein during the hose bending test, either a value of an external force required to displace a hose portion in a direction of the external force by a predetermined displacement amount, or a value of a displacement amount in a direction of the external force of the hose portion when the external force of a predetermined magnitude is exerted on the hose portion is measured, and the measured value is obtained as the test result.. ... Bridgestone Corporation

03/23/17 / #20170081507

Uses of biobased styrene

Disclosed herein are various uses of styrene monomers derived from biobased material and containing modern carbon atoms, including in copolymers, in rubber compositions, in tire components, and to balance the viscoelastic properties of a rubber composition containing the styrene monomer.. . ... Bridgestone Corporation

03/23/17 / #20170081452

Polydienes and diene copolymers using 1,1-bis(hydrocarbylthio)hydrocarbyl-1-ene compounds

A process for preparing a copolymer including one or more mer units deriving from the polymerization of 1,1-bis(hydrocarbylthio)hydrocarbyl-1-ene monomer, the process comprising anionically polymerizing conjugated diene monomer, 1,1-bis(hydrocarbylthio)hydrocarbyl-1-ene monomer, and optionally monomer copolymerizable therewith.. . ... Bridgestone Corporation

03/23/17 / #20170081429

Processes for recovering rubber from natural rubber latex

Processes for recovering natural rubber from an aqueous natural rubber latex that contains extractables and one or more additives and that is essentially free of lignocellulosic plant material are described. Natural rubber in the latex is separated from the water. ... Bridgestone Corporation

03/23/17 / #20170080759

Methods and apparatuses for creating a visual effect on a rubber article

Various methods and apparatuses for creating a visual effect on a rubber article are disclosed. In one embodiment, a rubber article having a visual effect is provided, the rubber article comprising: a surface having at least one surface feature; and wherein the at least one surface feature comprises a plurality of linear elements creating a camouflage-shaped appearance.. ... Bridgestone Corporation

03/23/17 / #20170080755

Pneumatic tire and mold for vulcanizing tire

My pneumatic tire has a rim diameter of 20 inches or more and an aspect ratio of 60% or less, and the ratio d1/l1 is 0.15 or less. My mold for vulcanizing a tire is used to manufacture a pneumatic tire with a rim diameter of 20 inches or more and an aspect ratio of 60% or less. ... Bridgestone Corporation

03/23/17 / #20170080608

Method for removing mold release agent and tire

A method for efficiently and completely removing a mold release agent adhering to a tire surface after a cure-molding process. In this method, the mold release agent is removed from an adherend region where an adherend is to be affixed to the tire surface after cure-molding. ... Bridgestone Corporation

03/23/17 / #20170080605

Mold and method of producing molded article using the mold

Provided are a mold allowing smooth removal of a molded article therefrom without deforming the molded article, and a method of producing the molded article using the mold. The mold includes a first mold piece (a), a second mold piece (b), and a plurality of third mold pieces (c). ... Bridgestone Corporation

03/16/17 / #20170074645

Measurement apparatus

This measurement apparatus includes measurement markers (2) disposed on the outer circumferential surface of a drum (3), a band-shaped member (10) being arranged on the outer circumferential surface of the drum (3), at least one measurement sensor (4) that acquires position information on at least a portion of the measurement markers (2), and a calculator that calculates the position of the measurement markers based on measurement information on the measurement markers (2) acquired by the measurement sensor (4) and calculates misalignment between the actual position of the measurement markers (2) measured in advance and the calculated position of the measurement markers (2).. . ... Bridgestone Corporation

03/16/17 / #20170074348

Anti-vibration apparatus and method of manufacturing anti-vibration apparatus

An anti-vibration apparatus (10) has a bracket (12) that is mounted at a vehicle body (26) (i.e., one of a vibration-generating portion or a vibration-receiving portion), a mounting portion (14) that is mounted at an engine (24) (i.e. The other one of the vibration-generating portion or the vibration-receiving portion), an elastic body (16) that is provided at the mounting portion (14) and is press-inserted into the bracket (12), and that is interposed between the bracket (12) and the mounting portion (14), an auxiliary elastic portion (18) that is provided at the mounting portion (14), and extends in a press-insertion direction of the elastic body (16), a threaded component (52) (i.e., the connector portion (20)) that is provided at the auxiliary elastic portion (18), and a connection-receiving portion (22) that is provided at the bracket (12), and to which the connector portion (20) is connected.. ... Bridgestone Corporation

03/16/17 / #20170073479

Microwave extraction technique for rubber and resin analysis

Methods are described for microwave extraction of a component from a rubber-containing plant by providing a container holding a mixture of a sample of the rubber-containing plant and a solvent, placing the container holding the mixture in a vessel, irradiating the mixture in the vessel to increase the temperature of the mixture to extract the component from the sample of the rubber-containing plant into the solvent, and separating the extracted component from the solvent to quantify the amount of the component in the sample. Methods are also described for quantifying the amount of natural rubber in a sample from a rubber-containing plant and quantifying the amount of resin in a sample from a rubber-containing plant.. ... Bridgestone Corporation

03/16/17 / #20170073477

Process for producing wet masterbatch, and wet masterbatch produced by said process

Provided is a process for producing a wet masterbatch which, without deteriorating a reinforcing property of a rubber composition and rubber physical properties, micronizes a filler slurry by controlling an amount of functional groups on a filler surface, and improves filler dispersibility in the rubber wet masterbatch and the rubber composition. The process for producing a wet masterbatch comprises: a step of producing a slurry solution having a ph of 8 or more by dispersing carbon black having an average amount of surface acidic functional groups (μeq/m2) of 0.15 or more and less than 3.00; a step of producing a mixture by mixing the slurry solution and a rubber latex solution in a liquid phase; and a step of drying the mixture.. ... Bridgestone Corporation

03/16/17 / #20170073450

Multiblock copolymer, rubber composition, and tire

A multiblock copolymer, obtainable by copolymerization of a conjugated diene compound and a non-conjugated olefin, is characterized in that: a structure of the multiblock copolymer includes a-(b-a)x and/or b-(a-b)x, wherein “a” represents a block portion constituted of monomer units of a non-conjugated olefin, “b” represents a block portion constituted of monomer units of a conjugated diene compound, and “x” represents an integer ≧1; content of the non-conjugated olefin portion is 50 mol %; 0 mol % <crystal content of the non-conjugated olefin portion 20 mol %; and 0% <degree of crystallinity of the non-conjugated olefin portion 40%. Vulcanized rubber having high fracture resistance and high crack resistance (thus a rubber composition and a tire each using the vulcanized rubber and having such excellent physical properties) can be manufactured from the multiblock polymer.. ... Bridgestone Corporation

03/16/17 / #20170073443

Process for producing polydienes

A method for producing a polydiene, the method comprising the steps of (i) forming an active catalyst by combining a lanthanide-containing compound, an alkylating agent, and a halogen source; and (ii) polymerizing conjugated diene monomer in the presence of the active catalyst and a catechol compound.. . ... Bridgestone Corporation

03/16/17 / #20170072922

Road surface condition estimating method

A method is provided for estimating a road surface condition by accurately determining whether or not there has been any large input to a tire without increasing the number of sensors. An acceleration sensor is disposed on the tire to detect the vibration of the tire in motion. ... Bridgestone Corporation

03/09/17 / #20170067529

Anti-vibration device

An anti-vibration device has excellent durability while reducing the amount of elastic deformation of an elastic body to a desired value. The disclosed anti-vibration device (1) includes an inner member (2), an outer member (3), an elastic body (4) that allows relative displacement between the inner member (2) and the outer member (3), a pair of first fluid chambers (c1) in communication with each other via first restricting passages (r1), and a second fluid chamber (c2) in communication with an auxiliary fluid chamber (c3) via a second restricting passage (r2). ... Bridgestone Corporation

03/09/17 / #20170066294

Functional component mounting base and tire

In order to provide a functional component mounting base having high durability to an inertial force acting on a functional component when a tire engages with and disengages from the road surface and to an impact force acting on the functional component mounting base when the tire passes over bumps the functional component mounting base (1) is formed of a rubber material, is attached to an inner surface (70) of the tire to mount the functional component (29) on the inner surface (70) of the tire, and characterized by being provided with a fitting recess (2) into which a functional component-side attaching portion (30) provided on the functional component (29) is fitted. The fitting recess (2) is formed such that an opening diameter of an opening (3) to the fitting recess is smaller than a maximum diameter of the functional component-side attaching portion (30), an inner surface (inner peripheral surface (9)) of the fitting recess (2) is formed as a fitting surface that fits with an outer surface (outer peripheral surface (31)) of the functional component-side attaching portion and a bottom of the fitting recess (2) is formed as raised and recessed portions (semicircular projections (5, 6) and a partition recess (8)) which fit with recessed and raised portions (semicircular recesses (34, 35) and a partition projection 33) formed on the functional component-side attaching portion (30).. ... Bridgestone Corporation

03/09/17 / #20170066291

Tire

A tire includes sipes, on a surface of a tread of the tire, extending towards the direction of tire rotation from the tread edge side to the tire equator side of the surface of the tread. The sipes are disposed at intervals in the circumferential direction of the tread. ... Bridgestone Corporation

03/02/17 / #20170057575

Crawler

A crawler of the present invention includes a crawler body that is formed in an endless shape from an elastic material, a main cord layer that is embedded in the crawler body, and that is configured including one or plural main cords extending along a crawler peripheral direction, and a reinforcement layer that is embedded in the crawler body, and that is configured including plural monofilament cords disposed around the entire crawler peripheral direction so as to intersect the main cord direction.. . ... Bridgestone Corporation

03/02/17 / #20170057302

Run flat tire

This run flat tire includes a carcass toroidally extending between two bead portions and side reinforcing rubber, having a crescent cross-sectional shape in the tire width direction, on the tire width direction inside of the carcass. The relational expressions 0.09≦twh/tw≦0.19, d/sh≦0.05, and 0.89≦tw/sw≦0.94 are satisfied, where, in a reference state such that the run flat tire is mounted on an applicable rim and inflated to a prescribed internal pressure with no load, tw (mm) represents the half width in the tire width direction between the tread edges, twh (mm) represents the radial drop height of the tread edge, sw (mm) represents half of the tire maximum width, sh (mm) represents the tire cross-sectional height, and d (mm) represents the drop height of the tire at a position 0.6sw (mm) outward, in the tire width direction, from the tire equatorial plane.. ... Bridgestone Corporation

03/02/17 / #20170057300

Run-flat tire

A tire includes: a pair of bead portions in which a bead core is each embedded and that have a bead heel diameter that is from 0.42% to 0.72% smaller than a rim diameter of a standard rim; a carcass that spans a region between the pair of bead portions and that has end portion sides anchored to the bead cores; bead filler that extends from each bead core toward a tire radial direction outer side so as to run along an outer face of the carcass; and side reinforcing rubber that is provided at tire side portions, that extends in the tire radial direction along an inner face of the carcass, that has an end portion at each bead core side overlapping the bead filler with the carcass interposed therebetween, and that has elongation at break of 130% or greater.. . ... Bridgestone Corporation

03/02/17 / #20170057186

Tire forming-mold and tire manufacturing method

In each protrusion-forming recess of a mold, a non-through-hole vent is provided at one end side, and a through-hole vent that is longer than the non-through-hole vent is provided at another end side. When there is an ingress of rubber of a green tire into each protrusion-forming recess, air inside the protrusion-forming recess is discharged through the through-hole vent and the minute amount of air remaining inside escapes to the non-through-hole vent. ... Bridgestone Corporation

03/02/17 / #20170056946

Die for drawing metal wire rod, and method for manufacturing same

Provided are a metal wire rod drawing die that has a longer life than conventional dies and that can prevent damage to a metal wire rod surface and a method for manufacturing the die. In a metal wire rod drawing die (1), a die hole (2) for inserting a metal wire rod is formed. ... Bridgestone Corporation

03/02/17 / #20170056732

Multi-piece solid golf ball

In a multi-piece solid golf ball having a rubber two-layer core consisting of an inner layer and an outer layer, a cover, and at least one intermediate layer therebetween, the inner core layer has a diameter of at least 30 mm, the difference in jis-c hardness between the center of the inner core layer and the surface of the outer core layer is at least 25, the ball satisfies the relationship a/b≦1.5, where a and b are the deflections of, respectively, the inner core layer and the two-layer core when compressed under specific loading conditions, and the intermediate layer has a higher material hardness than the cover. This ball enables mid- to high-level golfers both to achieve even longer distances and to maintain the spin performance on approach shots at a high level.. ... Bridgestone Corporation

02/23/17 / #20170051134

Rubber composition for tire, production process for same, and tire

Provided in the present invention is a rubber composition for tires which is improved in a dispersibility of silica in a rubber blended with a large amount of silica having so far made it difficult to be kneaded with the rubber and which makes it possible to carry out simultaneously using silica having a large particle diameter and blending a large amount of silica. Used in the present invention is a rubber composition for tires comprising a natural rubber and/or diene base rubber component, a glycerin fatty acid ester composition containing glycerin fatty acid monoester, and silica, wherein a bet specific surface area of the silica is 100 m2/g or more and 130 m2/g or less, and the rubber composition for tires contains 80 parts by mass or more of the silica based on 100 parts by mass of the rubber component. ... Bridgestone Corporation

02/23/17 / #20170050472

Pneumatic tire

Wear resistance is improved. To that end, a pneumatic tire of the disclosure herein includes, on a tread surface 1, a sipe 4 extending in a direction intersecting a tire circumferential direction. ... Bridgestone Corporation

02/23/17 / #20170050471

Pneumatic tire

The pneumatic tire of this disclosure comprises on a tread surface a widthwise outermost land portion partitioned by an outermost circumferential main groove and a tread edge, wherein: the widthwise outermost land portion has a plurality of side sipes extending to a tread widthwise outer side in a manner spaced from each other in the tread circumferential direction; the widthwise outermost land portion has an inner circumferential sipe and an outer circumferential sipe, the inner circumferential sipe extending in the tread circumferential direction, the outer circumferential sipe being positioned on a tread widthwise side outer than the inner circumferential sipe and extending in the tread circumferential direction; and, when h1 is a groove depth of the outermost circumferential main groove, h2 is a sipe depth of the inner circumferential sipe, and h3 is a sipe depth of the outer circumferential sipe, h1, h2 and h3 satisfy: h1>h3>h2.. . ... Bridgestone Corporation

02/23/17 / #20170050469

Tire

A tire in which a reinforcement layer and a tread section are laminated in this order from the inside toward the outside in a radial direction of the tire. The tread section includes an inner base layer, an outer base layer, and a cap layer that are laminated in this order from the inside toward the outside in the radial direction of the tire. ... Bridgestone Corporation

02/23/17 / #20170050396

Bleeder cord affixing device and method

A bleeder cord affixing device is made up of an affixing roller extending in a width direction of the treatment member and adapted to be pressed into the treatment member being moved, thereby to be rotated; and a roller moving mechanism that moves the affixing roller to and away from the treatment member. The roller moving mechanism operates to move the affixing roller to a pressed position urged to the treatment member, with a result that the affixing roller is caused to be rotated due to the movement of the treatment member at the pressed position and attaches the rubber member to the treatment member under the pressing force, and then presses the bleeder cords onto the treatment member to continuously affix the bleeder cords onto the surface of the treatment member.. ... Bridgestone Corporation

02/16/17 / #20170045845

Conductive endless belt and image forming apparatus

. . This conductive endless belt can suppress a reduction in toner releasability. The conductive endless belt is used in an image forming apparatus and includes at least an endless base layer and a surface layer formed on an outermost surface of an outer periphery of the base layer. ... Bridgestone Corporation

02/16/17 / #20170045108

Vibration-damping device

A vibration-damping device (10) includes a first attachment member (11), a second attachment member (12), an elastic body (13), and a partitioning member (16). Limiting passages (31, 32) are formed in the partitioning member (16), and the limiting passages (31, 32) include a first limiting passage (31) and a second limiting passage (32). ... Bridgestone Corporation

02/16/17 / #20170043627

Pneumatic tire

A pneumatic tire includes on a tread surface at least two circumferential main grooves extending in a tread circumferential direction, and a rib-like land portion partitioned by the two circumferential main grooves extending in the tread circumferential direction, wherein: the rib-like land portion has one or more circumferential sipes extending in the tread circumferential direction; and the rib-like land portion has one or more one-end opening lateral grooves and one or more first one-end opening sipes, the one-end opening lateral grooves extending from one of the two circumferential main grooves in a tread widthwise direction until a position connecting to the circumferential sipes, and ending within the rib-like land portion; the first one-end opening sipes extending from the other of the two circumferential main grooves in a tread widthwise direction, and ending within the rib-like land portion without connecting to the circumferential sipes.. . ... Bridgestone Corporation

02/16/17 / #20170043625

Pneumatic tire

A pneumatic tire includes a carcass, a tread portion and a belt having a first inclined belt ply, circumferential direction belt ply, second inclined belt ply, and third inclined belt ply. With respect to a tire circumferential direction, an angle of cords of the first inclined belt ply is from 45° to 60°, an angle of a cord of the circumferential direction belt ply is 5° or less, an angle of cords of the second inclined belt ply is from 30° to 60°, and an angle of cords of the third inclined belt ply exceeds 5° and is 30° or less. ... Bridgestone Corporation

02/16/17 / #20170043506

Tire mold and method for manufacturing tire mold

A tire mold capable of imparting appropriate amounts of heat according to regions of an uncured tire is provided. The tire mold includes a base mold and a pattern mold which is fitted to the base mold and has a surface part for molding a tread pattern on the tire. ... Bridgestone Corporation

02/09/17 / #20170037924

Vibration-damping device

A vibration-damping device (10) includes a first attachment member (11), a second attachment member (12), an elastic body, and a partitioning member (16). A limiting passage (30) that allows a main liquid chamber (14) and an auxiliary liquid chamber (15) to communicate with each other is formed in the partitioning member (16). ... Bridgestone Corporation

02/09/17 / #20170037190

Composition, adhesive and layered body

A composition includes: a polythiol compound; a (meth)acrylic compound having a plurality of at least one of an acryloyl group or a methacryloyl group and having a ring structure; and a radical generator, the ratio (ac/sh) of the total molar number (ac) of the at least one of an acryloyl group or a methacryloyl group contained in the (meth)acrylic compound to the total molar number (sh) of thiol groups contained in the polythiol compound is higher than 0.20 but lower than 0.70.. . ... Bridgestone Corporation

02/09/17 / #20170037189

Composition, adhesive and layered body

A composition includes: a polythiol compound; an aliphatic (meth)acrylic compound having a plurality of at least one of an acryloyl group or a methacryloyl group and being acyclic; and a radical generator, the ratio (ac/sh) of the total molar number (ac) of the at least one of an acryloyl group or a methacryloyl group contained in the aliphatic (meth)acrylic compound to the total molar number (sh) of thiol groups contained in the polythiol compound is from 0.70 to 1.20.. . ... Bridgestone Corporation

02/09/17 / #20170037179

Sheet-forming body, adhesive sheet, and laminate

The present invention provides a sheet-forming body containing a thiourethane bond-having compound and a thiol group-having compound, wherein, in an ir absorption spectrum thereof, the ratio of the peak intensity a of the absorption peak based on the carbonyl group in the thiourethane bond to the peak intensity b of the absorption peak based on the thiol group (a/b) is 20 or more and 250 or less. Using the sheet-forming body, rubber members, especially vulcanized rubber members can be strongly bonded, and the sheet-forming body and an adhesive sheet, which are excellent in handleability and workability, and a laminate produced by bonding rubber layers using the sheet-forming body are provided.. ... Bridgestone Corporation

02/09/17 / #20170036495

Side-reinforced run-flat radial tire

A run-flat radial tire has a tire section height sh equal to or greater than 115 mm and is equipped with a side-reinforcing rubber layer extending along an inner surface of a carcass from one tire side portion to another tire side portion wherein a tire equatorial plane cl is sandwiched in between the one tire side portion and the another tire side portion, wherein a thickness ge of the side-reinforcing rubber layer at the position of the tire equatorial plane and a thickness ga of the side-reinforcing rubber layer at positions where the carcass reaches its maximum width satisfy the relational expression ge≦0.6×ga.. . ... Bridgestone Corporation

02/09/17 / #20170036494

Side-reinforcement-type run-flat radial tire

A run-flat radial tire is provided with a side reinforcement rubber layer that extends in the tire radial direction along an inner face of a carcass and an angled belt layer that is provided at the tire radial direction outer side of the carcass. An overlap length l between a maximum width angled belt layer and the side reinforcement rubber layer satisfies the relationship l>0.14× sh with a tire section height sh. ... Bridgestone Corporation

02/09/17 / #20170036493

Run-flat tire

A run-flat tire has a carcass that spans a region between a pair of bead portions, a side reinforcement layer that is provided at a tire side portion that connects the bead portions and a tread portion, an inclined belt layer that is provided at an outer side of the carcass in a tire radial direction so as to span a tire equatorial plane cl, and that is formed by cords that are inclined relative to the tire circumferential direction, and a reinforcement cord layer that is provided at an outer side of the inclined belt layer in the tire radial direction, and only on a half portion of the tire that is located on an inner side in a tire fitting direction of the tire equatorial plane cl, and that is formed by cords that are inclined relative to the tire circumferential direction.. . ... Bridgestone Corporation

02/09/17 / #20170036492

Side-reinforced run-flat tire

Provided is a side-reinforced run-flat tire including a tread portion, a pair of sidewall portions extending on both sides of the tread portion, and reinforcing rubber provided in the sidewall portions, the side-reinforced run-flat tire further including: short fibers bonded, via an adhesive layer, to at least a portion of a region of a tire inner surface that is located in each of side portions, wherein the adhesive layer has a heatproof temperature of from 50 to 100° c.. . ... Bridgestone Corporation

02/09/17 / #20170036489

Pneumatic tire

A pneumatic tire includes: a zigzag circumferential direction groove that is formed in a tread portion by alternating and continuously formed first inclined portions and second inclined portions, the first inclined portions being inclined with respect to a tire circumferential direction and the second inclined portions being inclined in the opposite direction to the first inclined portions with respect to the tire circumferential direction; first lug grooves that are inclined in the same direction as the first inclined portions with respect to the tire circumferential direction and that merge with the first inclined portions; and second lug grooves that are inclined in the opposite direction to the first inclined portions with respect to the tire circumferential direction and that intersect the first inclined portions.. . ... Bridgestone Corporation

02/09/17 / #20170036485

Pneumatic tire

A pneumatic tire includes a carcass, a tread portion and a belt layer having a first inclined belt ply, circumferential direction belt ply, and second inclined belt ply. Ground contact edge side belt plies extend from tire width direction end portions of the second inclined belt ply toward tire width direction outsides, at a tire radial direction outside of the carcass. ... Bridgestone Corporation

02/09/17 / #20170036484

Bias tire and method for manufacturing same

Provided is a bias tire includes a carcass extending between a pair of bead portions, a pair of sidewall portions, a tread, and a reinforcement layer (5), formed by cords (5cb), disposed so as to cover at least a portion of a tire circumferential edge (bei) on the inner side, in the tire radial direction, of the innermost ply (2bi) of the carcass in a tire half portion (hfa) on a side where, as a cord (cb) of a tire circumferential end on the inner side, in the tire radial direction, of the innermost ply (2bi) approaches the tire circumferential edge on the inner side, in the tire radial direction, of the innermost ply (2bi) along the tire circumferential direction, the cord (cb) is inclined so as to separate from the tire equator (cl).. . ... Bridgestone Corporation

02/02/17 / #20170030428

Vibration-damping device

The present invention relates to a vibration-damping device (10) which is provided with: a tubular first attachment member (11) joined to one of a vibration generating unit and a vibration receiving unit; a second attachment member (12) joined to the other thereof; an elastic body (13) which joins the first attachment member (11) to the second attachment member (12); and a partition member (16) which partitions a liquid chamber in the first attachment member (11) into a first liquid chamber (14) and a second liquid chamber (15), and in which at least one of the first liquid chamber (14) and the second liquid chamber (15) has the elastic body (13) as a portion of a wall surface thereof. A vortex chamber unit (30) through which the first liquid chamber (14) communicates with the second liquid chamber (15) is formed in the partition member (16).. ... Bridgestone Corporation

02/02/17 / #20170029677

Composition, manufacturing method of adhesive sheet, adhesive sheet, manufacturing method of layered body, and layered body

A composition which includes: a polythiol compound; a compound having a carbon-carbon double bond at a terminal of a molecule thereof; a photo radical generator; and a thermal radical generator, a ratio (ene/sh) of a total molar number (ene) of the carbon-carbon double bond contained in terminals of a molecule of the compound having a carbon-carbon double bond at a terminal of a molecule thereof to a total molar number (sh) of thiol groups contained in the polythiol compound being higher than 0.20 but equal to or less than 0.70.. . ... Bridgestone Corporation

02/02/17 / #20170029603

Hose rubber composition and hydraulic hose

A hose rubber composition and hydraulic hose having favorable oil resistance and excellent in cold resistance and manufacturing operability are provided. A hose rubber composition includes, as a rubber component: acrylonitrile-butadiene rubber a whose acrylonitrile content is less than 26%; and acrylonitrile-butadiene rubber b whose acrylonitrile content is 26% or more, wherein a mass ratio of the acrylonitrile-butadiene rubber a and the acrylonitrile-butadiene rubber b is in a range of 15:85 to 45:55.. ... Bridgestone Corporation

02/02/17 / #20170029602

Rubber vibration isolator composition and rubber vibration isolator

The present invention addresses the problem of providing a rubber vibration isolator composition with which low temperature characteristics can be significantly improved while maintaining basic strength characteristics (hardness, tensile elongation, tensile strength), and a rubber vibration isolator obtained by curing said rubber composition. The present invention provides a rubber vibration isolator composition characterized in containing natural rubber, high cis content isoprene rubber, a crosslinking agent and an aromatic sulfonamide having a specified chemical structure. ... Bridgestone Corporation

02/02/17 / #20170029598

Conveyor belt rubber composition and conveyor belt

A rubber composition with which a conveyor belt having high energy saving performance can be obtained while maintaining breaking resistance and a conveyor belt having high energy saving performance while maintaining breaking resistance are provided. A conveyor belt rubber composition includes: a diene-based polymer; and a bismaleimide compound.. ... Bridgestone Corporation

02/02/17 / #20170029048

Crawler

A rubber crawler that has a specified rotation direction. Includes a crawler body, rubber projections and lugs. ... Bridgestone Corporation

02/02/17 / #20170029047

Crawler

A rubber crawler having a specified rotation direction includes a crawler body and plural lugs. The plural lugs are provided at the crawler body, and extend at an angle to a crawler peripheral direction from an end portion on a central line side toward a crawler width direction outer side and toward an opposite side to a crawler rotation direction. ... Bridgestone Corporation

02/02/17 / #20170028793

Pneumatic tire

Provided is a pneumatic tire in which the performance is to be improved while suppressing an increase in the thickness by using a reinforcing material applicable to such an insert member or the like by which a target reinforcing performance can be attained while suppressing an increase in the thickness. Provided is a pneumatic tire including: a pair of bead portions 11; a pair of side wall portions 12; and a tread portion 13, and including a carcass layer 2 composed of at least one carcass ply extending toroidally between bead cores 1 embedded in the pair of bead portions respectively as a skeleton. ... Bridgestone Corporation

02/02/17 / #20170028792

Tire

This tire is provided with reinforcing cord layers that reinforce a bead part. The reinforcing cord layers are such that at the bead part at the inner side of vehicle mounting, the number of layers of the reinforcing cord layers with respect to a bead filler is greater at the inner side in the direction of tire width compared to the outer side in the direction of tire width with respect to the bead filler, and at the bead part at the outer side of vehicle mounting, the number of layers of the reinforcing cord layers with respect to the bead filler is greater at the outer side in the direction of tire width compared to the inner side in the direction of tire width with respect to the bead filler.. ... Bridgestone Corporation

02/02/17 / #20170028790

Radial stone ejectors

A pneumatic tire is disclosed having a tread portion including a tread groove having a groove bottom and groove sidewalls. The tread groove has a groove width defmed as a shortest distance between the groove sidewalls. ... Bridgestone Corporation

02/02/17 / #20170028789

Tire

Provided is a tire such that both tire weight reduction and high durability can be achieved by establishing a technology capable of ensuring the sufficient effect of preventing diameter growth even when the amount of steel used in a belt layer is decreased. The tire includes: two or more crossing belt layers 4 including rubberized layers of steel cords tilting and extending at an angle of 10° to 30° with respect to a tire equatorial plane, the rubberized layers being arranged such that the directions of the cords intersect each other; and a high-angle bell layer 3 including a rubberized layer of steel cords tilting and extending at an angle which is 5° or more greater than the angle of the crossing belt layers. ... Bridgestone Corporation

02/02/17 / #20170028788

Pneumatic tire

To reduce noise while suppressing increase in rolling resistance, without affecting the formation of a carcass line, provided is a pneumatic tire (10) including: a carcass (13); an inclined belt (14), and an inner liner (17). The inclined belt (14) is disposed on the tire radial outer side of the crown portion of the carcass (13). ... Bridgestone Corporation

02/02/17 / #20170028659

Apparatus and method for supplying tire material members

A supply apparatus of tire material members includes a feeder that feeds out first and second continuous material members from which first and second material member is to be cut out, respectively, a conveyer that conveys the first and second continuous material members, a cutter that cuts the first and second continuous material members at a cutting position extending perpendicularly to a conveyance direction every time when the first and second continuous material members are conveyed by a predetermined length, a position detector that detects positions of the first and second continuous material members during a conveyance by the predetermined length from the cutting position, and a position adjuster that, during the conveyance by the predetermined length from the cutting position, adjusts conveyance distances of the first and second continuous material members based on the detected positions of the first and second continuous material members.. . ... Bridgestone Corporation

01/26/17 / #20170023091

Vibration isolation device

A vibration isolation device (10) of the present invention includes a tubular first attachment member (11) coupled to one of a vibration generating part and a vibration receiving part, and a second attachment member (12) coupled to the other thereof, an elastic body (13) which couples both the attachment members together, and a partition member (16) which partitions a liquid chamber within the first attachment member (11) having a liquid (l) enclosed therein into a first liquid chamber (14) and a second liquid chamber (15), in which at least one of the first liquid chamber (14) and the second liquid chamber (15) has the elastic body (13) as a portion of a wall surface thereof, the partition member (16) includes an intermediate chamber (43) which is disposed inside the partition member (16), a first communication passage (42a) which communicates with the intermediate chamber (43) and the first liquid chamber (14), and a second communication passage (42b) which communicates with the intermediate chamber (43) and the second liquid chamber (15), and a barrier rigid body (33) which faces at least one of the first communication passage (42a) and the second communication passage (42b) is disposed inside the intermediate chamber (43).. . ... Bridgestone Corporation

01/26/17 / #20170023090

Vibration isolation device

A vibration isolation device (10) of the present invention includes: a tubular first attachment member (11) coupled to one of a vibration generating part and a vibration receiving part, and a second attachment member(12) coupled to the other thereof; an elastic body (13) which couples both the attachment members together; and a partition member (16) which partitions a liquid chamber in the first attachment member (11) in which a liquid (l) enclosed into a first liquid chamber (14) and a second liquid chamber (15), in which at least one of the first liquid chamber (14) and the second liquid chamber (15) has the elastic body (13) as a portion of a wall surface thereof and a communication passage (30) which communicates with the first liquid chamber (14) and the second liquid chamber (15), and a barrier rigid body which is disposed in the communication passage (30) are provided in the partition member (16).. . ... Bridgestone Corporation

01/26/17 / #20170023089

Vibration-damping device

The present invention is a vibration-damping device (10, 60, 80) which is provided with: a first attachment member (11) joined to one of a vibration generating unit and a vibration receiving unit and a second attachment member (12) joined to an other thereof; an elastic body which joins the first attachment member (11) to the second attachment member (12); a partition member (16, 90) which partitions a liquid chamber in the first attachment member (11) into a first liquid chamber (14) and a second liquid chamber (15), and in which at least one of the first liquid chamber (14) and the second liquid chamber (15) has the elastic body (13) as a portion of a wall surface thereof. The partition member (16, 90) is provided with a communicating passage (30), and the communicating path (30) is provided with a branching section (33) and a confluence section (32, 70, 84, 101).. ... Bridgestone Corporation

01/26/17 / #20170022301

Polymers functionalized with imine compounds containing a protected thiol group

A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomer to form a reactive polymer, and (ii) reacting the reactive polymer with an imine compound containing a protected thiol group. . ... Bridgestone Corporation

01/26/17 / #20170021678

Tire construction with discontinuous body ply configuration

Various embodiments of a tire having a discontinuous body ply configuration are disclosed.. . ... Bridgestone Corporation

01/26/17 / #20170021673

Tire with reinforced tread

A tire includes a circumferential tread constructed of a base material. The circumferential tread has a plurality of bars, each of the plurality of bars having a top surface and a plurality of side surfaces. ... Bridgestone Corporation

01/26/17 / #20170021671

Precured tire tread with fabric reinforcing layer

A precured tread assembly for mounting on a tire casing is provided. The precured tread assembly includes a tread portion having a mounting surface and an opposing ground-engaging surface with a plurality of grooves therein. ... Bridgestone Corporation

01/26/17 / #20170021670

Resin-metal composite material and tire using same

Provided is a resin-metal composite material that ensures high adhesion between a resin material and a metal material. Additionally provided is a tire that achieves high durability by using the resin-metal composite material. ... Bridgestone Corporation

01/26/17 / #20170021669

Pneumatic tire

To reduce noise while suppressing increase in rolling resistance, without affecting the formation of a carcass line, provided is a pneumatic tire 10 comprising an inner liner 17, the thickness of the inner liner 17 at least in part of a side portion 18 is 1.5 mm or more. When the tire 10 is mounted to a rim, and an internal pressure of 250 kpa or more is applied to the tire, in a case where a sectional width sw of the tire is less than 165 mm, a ratio of the sectional width sw to an outer diameter od of the tire, sw/od, is 0.26 or less; and in a case where the sectional width sw of the tire is 165 mm or more, the sectional width sw and the outer diameter od of the tire satisfy a relation expression od≧2.135×sw+282.3.. ... Bridgestone Corporation

01/26/17 / #20170021593

Adhesive sheet, manufacturing method thereof, and layered body

An adhesive sheet, the adhesive sheet having an adhesive composition layer, the adhesive composition layer being formed using a composition including: a polythiol compound; a (meth)acrylic compound having a plurality of at least one of an acryloyl group or a methacryloyl group; a radical generator; and a michael addition catalyst, a ratio (ac/sh) of a total molar number (ac) of the at least one of an acryloyl group or a methacryloyl group contained in the (meth)acrylic compound to a total molar number (sh) of thiol groups contained in the polythiol compound being from 0.25 to 0.80.. . ... Bridgestone Corporation

01/26/17 / #20170021581

Adjusting expandable rim width using a band

A rim for mounting a tire includes a base portion and a rim portion. The rim portion includes a rim segment, a first flange segment positioned on one side and a second flange segment positioned on an opposite side of the rim segment. ... Bridgestone Corporation

01/26/17 / #20170021580

Expandable rim width insert

A machine for retreading tires includes a rotatable hub and an expandable rim disposed around the moveable hub. The expandable rim includes a plurality of shoes, each shoe having a flange segment on either side of a rim segment of the plurality of shoes. ... Bridgestone Corporation

01/19/17 / #20170016508

Vibration damping device

. . A laminar flow path (34) is opened into the vortex chambers (33a and 33b) from inner peripheral surfaces that face in radial directions of the vortex chambers (33a and 33b) being aimed in circumferential directions of the vortex chambers (33a and 33b) among wall surfaces defining the vortex chambers (33a and 33b). A communication hole (32b) is opened into the vortex chamber (33a and 33b) from an end surface that faces in a direction of center axis of the vortex chamber (33a and 33b) being aimed in a direction of a center axis among the wall surfaces defining the vortex chamber (33a and 33b). ... Bridgestone Corporation

01/19/17 / #20170015760

Polymers functionalized with heterocyclic nitrile compounds

A method for preparing a functionalized polymer, the method comprising the steps of preparing a reactive polymer and reacting the reactive polymer with a heterocyclic nitrile compound.. . ... Bridgestone Corporation

01/19/17 / #20170015186

Engine unit support structure and engine unit mounting method

To provide an engine unit support structure with excellent vibration damping performance and durability, the engine unit support structure (1) is provided with an engine unit (2) having an engine (22), a mounting base (3) for mounting the engine unit (2) thereon, and a plurality of elastic support bodies coupled to the engine unit (2) and the mounting base (3) to thereby support the engine unit (2), in which the plurality of elastic support bodies include a first elastic support body (4a) disposed under the lower surface (20) of the engine unit (2) in a position closest, than any other of the plurality of the elastic support bodies, to the rotation center of the output shaft of the engine (22) and three or more of second elastic support bodies (4b, 4b, . . ... Bridgestone Corporation

01/19/17 / #20170015149

Tire-state detection device

A tire-state detection device according to the present invention includes: an electronic component including a detection unit that detects a pressure of a tire; and a case that houses the electronic component. The case includes: a case main body that houses the electronic component and that has an open surface formed thereon; and a lid member that covers the open surface. ... Bridgestone Corporation

01/19/17 / #20170015141

Non-pneumatic tire

Provided is a non-pneumatic tire including an attachment body attached to an axle, an outer tubular body (13) configured to surround the attachment body from the outside in a tire radial direction, and a connecting member (15) configured to connect the attachment body and the outer tubular body while allowing displacement therebetween, wherein the connecting member includes a first elastic connecting plate (21) in which a first end portion (21a) connected to the outer tubular body is disposed closer to a first side in a tire circumferential direction than a second end portion connected to the attachment body and an intermediate portion (21c) is disposed between the first end portion and the second end portion, and both of circumferential end surface (26a, 26b) directed in the tire circumferential direction among surfaces of the first end portion of the first elastic connecting plate extend in opposite directions in the tire circumferential direction to be separated from each other from the inside toward the outside in the tire radial direction.. . ... Bridgestone Corporation

01/19/17 / #20170015075

Joining state determination method and molding device

A joining state determination method includes: acquiring member front end imaging data of a band-shaped member; acquiring member joint imaging data of the band-shaped member; calculating a matching rate indicating a degree of coincidence of the acquired member joint imaging data with member front end registration data registered based on the acquired member front end imaging data; and determining that the longitudinal ends of the band-shaped member are properly joined, in the case where the calculated matching rate is either not greater than a predetermined threshold or less than the predetermined threshold.. . ... Bridgestone Corporation

01/19/17 / #20170015074

System and method for building and curing a tire curing bladder

A system and method for building and curing a tire curing bladder is provided. In one embodiment, a system for curing a tire curing bladder is provided, the system comprising: a tire building drum, including: at least one end cap; and a cylindrical wall; wherein the tire building drum includes an axis of rotation and wherein the axis of rotation extends through the at least one end cap, and wherein the cylindrical wall includes at least one orifice; a mold, including: a mold ring oriented at least partially radially outwardly of the tire building drum; and at least one outside bead ring; and a tire curing press.. ... Bridgestone Corporation

01/19/17 / #20170014691

Manufacturing method and golf club head

A manufacturing method includes a measurement step of measuring a spring effect of a face portion of a hollow golf club head, and a selection step of selecting, based on a measurement result of the measurement step, an adjustment device, out of a plurality of adjustment devices, to be attached to an attachment portion of the golf club head. The plurality of adjustment devices have different degrees of suppression to the spring effect of the face portion from each other.. ... Bridgestone Corporation

01/12/17 / #20170010122

Vehicular travel condition monitoring apparatus

To provide a vehicular travel state monitoring device has functions of displaying images ahead of a traveling vehicle and data measured of a traveling state of the vehicle, such as accelerations acting on the vehicle, as images on the same screen and storing the displayed images as moving image data, a mobile terminal device has a vehicular travel state measuring means (13) built therein which includes a gps (131), a three-axis acceleration sensor (132) and a three-axis angular velocity sensor (133). The mobile terminal device is further provided with a synthetic image generating means (16) which generates a synthetic image of a plurality of data synthesized at predetermined time intervals, out of measurement data measured by the vehicular travel state measuring means (13), imaging data captured by an imaging means (12), and web information data acquired by a web information acquiring unit (11a). ... Bridgestone Corporation

01/12/17 / #20170008352

Run flat radial tire

A run flat radial tire having a tire cross-section height of 115 mm or greater includes a carcass spanning between a pair of bead portions, a side reinforcing rubber layer that is provided to a tire side portion and that extends in a tire radial direction along an inner face of the carcass, and at least one inclined belt layer provided at a tire radial direction outside of the carcass and includes cord extending in a direction inclined to a tire circumferential direction. At least at one end portion side in the tire axial direction of a maximum width inclined belt layer having the largest width in the tire axial direction, the maximum width inclined belt layer and the side reinforcing rubber layer have an overlap width in the tire axial direction of 15% or greater of the tire axial direction width of the maximum width inclined belt layer.. ... Bridgestone Corporation

01/12/17 / #20170008351

Agricultural machinery pneumatic tire

A recessed portion is formed in each tire side portion of an agricultural machinery pneumatic tire. Rigidity at the part of each tire side portion where the recessed portion is formed is reduced. ... Bridgestone Corporation

01/12/17 / #20170008347

Tire

A tire (10) includes, in a tread surface (11): at least two circumferential grooves (12, 13) extending in a tire circumferential direction; and a land portion (14) sandwiched between the circumferential grooves (12, 13). The land portion (14) has a resonator (15) including: an air chamber (16); a first branch groove (17); and a second branch groove (18). ... Bridgestone Corporation

01/12/17 / #20170008243

Tire vulcanizing mold, tire manufacturing method, and tire

A tire vulcanizing mold for molding an unvulcanized tire into a pneumatic tire having a bead part with a bead heel part is provided with a side part ring for molding at least the bead part. A circumferential groove part extending in the tire circumferential direction is formed on a tire molding surface of the side part ring in a heel molding region for molding the bead heel part, the side part ring is divided into a side ring and a bead ring that abuts against the side ring, the division position of the tire molding surface of the side ring and the tire molding surface of the bead ring is located in the groove bottom of the circumferential groove part, and the cross-sectional shape of the circumferential groove part tapers toward the groove bottom.. ... Bridgestone Corporation

01/12/17 / #20170008196

Tire dismantling method

A tire dismantling method is provided that is capable of dismantling a reinforcing member from a tire in which a thermoplastic material and the reinforcing member are an integral unit. The dismantling method is of a tire including a tire frame member (17) formed of a thermoplastic resin, and a reinforcing member (26) laid up at a tire radial direction outside of the tire frame member (17) and formed of a material with a higher rigidity than the tire frame member (17). ... Bridgestone Corporation

01/05/17 / #20170005214

Solar cell sealing film, and solar cell module using the same

There are provided: a solar cell-sealing film containing an ethylene-α-olefin copolymer polymerized using a metallocene catalyst, an organic peroxide and a silane coupling agent, wherein a decrease in the adhesive force of the sealing film during the storage time before its usage is suppressed; and a solar cell using the same. There are provided: a solar cell-sealing film formed of a composition containing an ethylene-α-olefin copolymer polymerized using a metallocene catalyst, an organic peroxide and a silane coupling agent, wherein the composition further contains 0.01 to 0.1 parts by mass of magnesium hydroxide or magnesium oxide with respect to 100 parts by mass of the ethylene-α-olefin copolymer, and the magnesium hydroxide or the magnesium oxide has a bet specific surface area of 30 m2/g or larger; and a solar cell using the same.. ... Bridgestone Corporation

01/05/17 / #20170003199

Dual-axis trigger for tire testing

Various embodiments relate to methods, systems, devices, and non-transitory media for increasing repeatability and reliability of tire testing trials including one or more of the following: capturing position data from a position sensor, wherein the capture of the position data is indicative of alignment with the desired testing area along the first axis; determining whether the position data indicates that the testing wheel is aligned with the desired testing area along a second axis that is perpendicular to the first axis, and when the position data indicates that the testing wheel is aligned with the desired testing area along a second axis, effecting initiation of a testing event.. . ... Bridgestone Corporation

01/05/17 / #20170002891

Vibration isolator

A vibration isolator of the present invention includes a first attachment member (11), a second attachment member (12), an elastic body (13), a partition member (15), and a movable member (23). In addition, a plurality of communicating holes (27a and 27b) extending outward in an axial direction from a portion facing the movable member (23) in the axial direction in a wall surface of an accommodating chamber (18) and configured to communicate the accommodating chamber (18) with a main liquid chamber (16a) or a subsidiary liquid chamber (16b) are provided in the partition member (15), at least one of the plurality of communicating holes (27a and 27b) is a direct coupling hole (27a) configured to directly couple the accommodating chamber (18) with the main liquid chamber (16a) or the subsidiary liquid chamber (16b) in the axial direction, a flow control member (30) positioned at an outside in the axial direction relative to the direct coupling hole (27a) and disposed to overlap the movable member (23) in the axial direction through the direct coupling hole (27a) is further provided, and the flow control member (30) does not come into contact with the movable member (23) deformed in the axial direction when a liquid pressure of the main liquid chamber (16a) varies based on an input from a vibration-generating part.. ... Bridgestone Corporation

01/05/17 / #20170002112

Polymers functionalized with polycyano compounds

A method for preparing a functionalized polymer, the method comprising the steps of polymerizing monomer to form a reactive polymer, and reacting the reactive polymer with a polycyano compound.. . ... Bridgestone Corporation

01/05/17 / #20170002105

Polymers incorporating hydroxyl group-containing methylstyrene

Vulcanizates with desirable properties can be obtained from compounds incorporating polymers that include hydroxyl group-containing α-methylstyrene functionalities. The functionalities can be incorporated by using any or all of appropriate initiators, monomers and optional terminating compounds. ... Bridgestone Corporation

01/05/17 / #20170001398

Method to prepare treads for tyres, rubber compound, tread portion and winter tyre

A method of producing a rubber compound for a tread portion designed to assume, with use, a porous surface with a 75 to 800 μm pore area. The method includes a first mixing step, in which a polymer base, recycled rubber, and silica are mixed together; and a second mixing step, in which a curing system is added and mixed to the compound from the first mixing step. ... Bridgestone Corporation

01/05/17 / #20170001340

Mold, tire curing mold, and method for manufacturing mold

A mold capable of imparting an appropriate amount of heat depending on a part of an object to be heated, the mold for transferring heat to the object to be heated is provided with a hollow portion inside the mold, and a heat amount adjusting agent, which is accommodated in the hollow portion, for changing heat transfer property of the hollow portion, in which the heat amount adjusting agent is made of a powdery or granular material having a material property different from a material property of the mold.. . ... Bridgestone Corporation

01/05/17 / #20170001080

Golf ball with built-in ic chip

A golf ball of the present invention includes a small-size ic tag including an ic chip and a first antenna directly connected to the ic chip and having a size of 5 mm or less; and a conductive second antenna of which a part is disposed near the ic tag. The ic tag and the second antenna do not need to be in physical contact with each other. ... Bridgestone Corporation








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