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Bridgestone Corporation patents (2016 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


Storage medium, method, and portable terminal

. . The present invention provides a non-transitory computer-readable storage medium storing a program that causes a computer of a portable terminal including a display device to function as: a registration unit accepting registration of user information including at least information about a swing characteristic of a user; an accepting unit accepting input of specifying information that specifies a golf product; a calculation unit reading out information of the golf product specified by the specifying information from a database and calculating a degree of fitting of the golf product to the user based on the readout information and the user information; and a display control unit causing the display device to display a calculation result of the calculation unit.. . ... Bridgestone Corporation

Rubber composition and tire

Provided is a rubber composition that allows for manufacturing a tread rubber that is high in braking performance on a dry surface road and also high in braking performance even on a wet road surface such as a manhole surface that is slipperier than an asphalt road surface. The rubber composition is prepared by compounding a rubber component (a) including a natural rubber by 70 mass % or more, and by further compounding, with the rubber component as 100 parts by mass: (b) at least one kind of thermoplastic resins selected from among c5-based resins, c5- to c9-based resins, c9-based resins, terpene-based resins, terpene-aromatic compound-based resins, rosin-based resins, dicyclopentadiene resins, and alkylphenol-based resins, at 5 parts by mass to 50 parts by mass; and (c) a filler including silica, at 20 parts by mass to 120 parts by mass, in which the filler (c) contains silica by 50 mass % to 100 mass %.. ... Bridgestone Corporation

Golf ball and method of manufacture

In a golf ball having a core and a cover, the core is formed of a rubber composition, has center and surface portions which are unfoamed regions and has an intermediate portion containing a foamed region. The core is produced by charging the rubber composition, which contains a blowing agent, into a first curing mold and curing under given conditions, then removing the molded rubber material in a semi-cured state from the first mold, transferring the semi-cured material to a second curing mold and curing under given conditions. ... Bridgestone Corporation

Golf ball selection using mobile computer device with camera

There is provided is a method and computer program product for selecting an appropriate golf ball for a subject by using a mobile computer device with a camera. The method includes: inputting information concerning hitting skill of the subject to the mobile computer device; performing a calibration of a distance and/or direction between two points in a screen of the mobile computer for shooting a moving image; shooting a moving image by the camera of the mobile computer device when the subject hits a golf ball by a golf club; determining a head speed of the golf club before an impact of the club and the ball from the shot moving image based on the calibration; computing a golf ball product having a suitable performance for the subject from the input information concerning hitting skill and the determined head speed, based on a database comprising data of information concerning hitting skills of players, data of head speeds before impact of club and ball, and data of performances of golf ball products which are correlated with each other; and displaying the computed recommended golf ball product on the mobile computer device.. ... Bridgestone Corporation

Run-flat radial tire

A run-flat radial tire includes a carcass; an inclined belt layer configured by one or more belt plys; a tread portion formed with plural circumferential direction grooves; and side reinforcing rubber that is provided at tire side portions. The side reinforcing rubber extends along an inner face of the carcass from a side of a bead portion to a side of the tread portion and overlaps a maximum width belt ply. ... Bridgestone Corporation

Tire

A tire (10) includes: a tire frame member (12) that is made of a resin material and that includes bead portions (16), side portions (18) that is connected to tire radial direction outer sides of the respective bead portions (16), and a crown portion (26), on which a tread (32) is disposed, connected to tire width direction inner sides of the respective side portions (18) and on which a tread(32) is disposed; and reinforcing layers (14) of a reinforcing material (30) covered by a resin material, that are provided to at least the side portions (18) and that are disposed in a row around a tire circumferential direction.. . ... Bridgestone Corporation

Strip-winding method and strip-winding apparatus

The strip-winding method, includes: a first step of supplying a strip to a wound body including an inclined part; and a second step of moving a winding roller along an outer circumferential surface of the wound body within one plane, the winding roller being capable of pressing the strip on the wound body, and of winding the strip on the outer circumferential surface of the wound body. In the second step, the roller inclination angle of the rotational axis line of the winding roller with respect to the one plane is changed, and the roller inclination angle at the time the strip is wound around the inclined part is set to be greater than the roller inclination angle at the time the strip is wound around a maximum diameter position of the wound body.. ... Bridgestone Corporation

Tire dismantling method

A tire dismantling method is provided that is capable of dismantling a thermoplastic resin material from a tire in which the thermoplastic resin material and a rubber layer have been integrated together. A dismantling method is provided for a tire including a tire frame member formed of a thermoplastic resin and a rubber layer that is vulcanization bonded to an outer face of the tire frame member. ... Bridgestone Corporation

Tire

Provided is a tire in which, by improving a decorative portion provided on a side portion, while a high visibility and a crack resistance are secured, molding man-hours are reduced, thereby improving a moldability and a cost performance. The a tire comprises, on a sidewall portion: a decorative band 11 formed of a protruding strip 21; and an inside outer edge protruding portion 22 and an outside outer edge protruding portion 23 which are arranged adjacent inside and outside the decorative band in the radial direction respectively, and which are more protruded toward the tire outer surface side than the protruding strip, the decorative band is formed by arranging a plurality of decorative elements 24 formed by the protruding strip continuously extending from the inside outer edge protruding portion to the outside outer edge protruding portion without interruption in the tire circumferential direction, the decorative elements adjacent to each other in the tire circumferential direction are divided by a valley portion 25 which is formed between the protruding strips and extends in the tire radial direction, and at least a portion of the decorative element comprises a first region 24a in which the protruding strip is densely arranged partially in a zigzag shape and a second region 24b in which the protruding strip is loosely arranged, and the decorative element does not comprise an intersection at which the protruding strips from three or more different directions are crossed.. ... Bridgestone Corporation

Tbr based implement tire

A vf rated radial implement tire is provided utilizing a steel belted radial tbr tire body design which can be utilized in existing tbr cavity molds, and modifying the tire to have a ribbed implement tread pattern. The tire is designed for operation at relatively low inflation pressures with relatively high wall flexibility. ... Bridgestone Corporation

Multi-piece solid golf ball

In a golf ball having a core, a cover and an intermediate layer therebetween, the ball and a sphere consisting of the core encased by the intermediate layer have surface hardnesses which satisfy a specific relationship, the intermediate layer and the cover have thicknesses which satisfy a specific relationship, and (initial velocity of intermediate layer-encased sphere)/(initial velocity of core)≧0.995. Also, the core, the intermediate layer-encased sphere and the ball have respective deflections under given compression conditions which satisfy a specific condition. ... Bridgestone Corporation

Tire

A tire has a tread, wherein: provided that a position distanced from the tread center position a on each side in the tire width direction by ¼ of the entire peripheral length of the tread surface is position b, a length of a straight line la between the center position a and the tire rotation axis p is la, a length of a straight line between the position b and the tire rotation axis p is lb, an intersection of the straight line la and a straight line drawn from the position b to the straight line la is position c, and a length between the position b and the position c is x, (la−lb)/x is in the range of 0.277 to 0.350; and the rubber composition of the tread has specific content ranges of a filler and a resin having softening point≦145° c.. . ... Bridgestone Corporation

Manufacturing method, golf club head, and design method

The present invention relates to a method of manufacturing a wood type golf club head including a face portion, a crown portion, and a sole portion. The method includes a setting step of setting a surface roughness of the face portion and a step of forming the face portion based on the surface roughness set in the setting step. ... Bridgestone Corporation

Multi-piece solid golf ball

In a golf ball having a core, a cover and an intermediate layer therebetween, the ball and a sphere consisting of the core encased by the intermediate layer 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 center, at positions 5 mm, 10 mm and 15 mm from the core center and at the core surface satisfy specific relationships. This ball, when played by mid- and high-level amateur golfers, achieves a good distance on driver shots, has a soft feel at impact and maintains the spin performance at a high level on approach shots.. ... Bridgestone Corporation

12/08/16 / #20160354632

Golf ball trajectory prediction method, golf ball trajectory prediction apparatus, and golf club selection method

A golf ball trajectory prediction method that can predict the trajectory of a golf ball with high accuracy is provided. The golf ball trajectory prediction method includes: a swing measurement step of measuring a golfer's swing using a test golf club; a head behavior prediction step of predicting a behavior of a head of a target golf club when using the target golf club, with a measurement value of the swing measured in the swing measurement step as input; a ball initial behavior calculation step of calculating an initial behavior of a golf ball after colliding with the head of the golf club, based on the behavior of the head predicted in the head behavior prediction step; and a ball trajectory prediction step of predicting a trajectory of the golf ball, from the initial behavior of the golf ball calculated in the ball initial behavior calculation step.. ... Bridgestone Corporation

12/01/16 / #20160347777

Compounding silica-reinforced rubber with low volatile organic compound (voc) emission

Alkoxy-modified silsesquioxane compounds are described. The alkoxy-modified silsesquioxane compounds contain an alkoxysilane group that participates in an alkoxysilane-silica reaction as a silica dispersing agent in rubber, with the release of zero to about 0.1% by weight of the rubber of volatile organic compounds (voc), especially alcohol, during compounding and further processing. ... Bridgestone Corporation

12/01/16 / #20160347122

Tire with noise-reducing tread pattern

A tire includes a tire carcass and a tread extending circumferentially about the tire carcass. The tread includes a plurality of tread elements disposed in a tread pattern. ... Bridgestone Corporation

12/01/16 / #20160347015

Method and apparatus for improved tread splicing

A mold for molding a tire tread comprises a plurality of mold segments. Each of the plurality of mold segments includes an integer number of tread pitch repetitions. ... Bridgestone Corporation

12/01/16 / #20160346645

Golf club head

A hollow golf club head comprises a face part, a sole part, a side part, a crown part, and a hosel part. At least one of the face part and the crown part has portions of two different rigidities that are first and second rigid portions, the first rigid portion has a first rigidity, the second rigid portion is made of the same material as the first rigid portion, and the second rigid portion has the same thickness as the first rigid portion but has a lower rigidity than the first rigidity of the first rigid portion.. ... Bridgestone Corporation

11/24/16 / #20160341275

Resilient stopper component and anti-vibration apparatus

A resilient stopper component (20) is provided with a bottom surface portion (48) that is mounted, via an inner bracket (22), at one of a vibration-generating portion or a vibration-receiving portion, and that has a communicating hole (48a) provided in a first mounting component (11) that is provided with a cylindrical component (24) inside which the inner bracket (22) is inserted, with the cylindrical component (24) being inserted through the communicating hole (48a), is also provided with an enclosing portion (50) that is formed extending upright from the bottom surface portion (48) so as to be able to enclose the cylindrical component (24), in which an aperture portion (58) that forms an aperture for inserting the inner bracket (22) into the cylindrical component (24) is formed so as to be in communication with the communicating hole (48a), and limits a displacement amount of the first mounting component (11).. . ... Bridgestone Corporation

11/24/16 / #20160340538

Golf ball

In a golf ball having a core of at least one layer and a cover of at least one layer, some or all of the surface of at least one such layer of the ball is treated with a treatment solution. The treatment solution is made of (a) a polyolefin-based thermoplastic resin and (b) at least one solvent selected from the group consisting of water, ammonia water and organic solvents, and is obtained by dissolving or finely dispersing resin solids of component a in the solvent of component b. ... Bridgestone Corporation

11/24/16 / #20160340447

Method for producing polydienes and polydiene copolymers with reduced cold flow

A method for preparing a coupled polymer, the method comprising the steps of (i) polymerizing monomers to form a reactive polymer, and (ii) reacting the reactive polymer with a glycidic ester.. . ... Bridgestone Corporation

11/24/16 / #20160339747

Motorcycle tire

In a motorcycle tire, since a reinforcement cord that constitutes a belt layer (24) is constituted by a cord having a low modulus of elasticity (a tensile force upon 1% elongation is 15 n or less), a shearing force in a circumferential direction of a tread (26) is decreased. As a result, a value of frictional energy is decreased, and abrasion resistance of the tread (26) (a center section (27)) is improved. ... Bridgestone Corporation

11/24/16 / #20160339745

Airless tire construction having multiple layers

A tire includes a wheel portion having an axis of rotation and an annular outer surface. The tire further includes a webbing extending from an annular inner surface of the wheel portion towards the axis of rotation. ... Bridgestone Corporation

11/24/16 / #20160339744

Plant oil-containing rubber compositions, tread thereof and race tires containing the tread

Disclosed herein are rubber compositions comprising at least one elastomer; reinforcing filler comprising carbon black, silica, or a combination thereof; at least one hydrocarbon resin; and at least one plant oil and optionally at least one additional oil, wherein the total amount of reinforcing filler is at least 25% by weight of the rubber composition and the total amount of oil is at least 60 phr and comprises about 15 to about 35% by weight of the rubber composition. The rubber compositions are useful in tire treads, particularly tire treads for race tires. ... Bridgestone Corporation

11/24/16 / #20160339613

Method of manufacturing foam molded product, apparatus for manufacturing foam molded product, and foam molded product

The present invention is an apparatus for manufacturing a foam molded product in which a foam molded product (1a, 1b) is formed by integrally adhering together a foam body (2) that is formed by the foaming of a foaming raw material, and an air-permeable component (3). A cavity (23) is provided between a plurality of mold components (21, 22, 31) and is defined by respective cavity surfaces (21a, 22a, 31a) of the mold components (21, 22, 31).. ... Bridgestone Corporation

11/24/16 / #20160339313

Selection assisting method and selection assisting apparatus

The present invention relates to a selection assisting method including a first selection step of selecting a recommended grip from a plurality of types of grips based on information on a hand size of a testing golfer; a measurement step of measuring by using a measurement device a swing characteristic of the testing golfer in a shot by using a golf club to which the recommended grip selected in the first selection step is attached; and a second selection step of selecting a recommended grip from the plurality of types of grips based on a measurement result in the measurement step.. . ... Bridgestone Corporation

11/17/16 / #20160333151

Vulcanizates and tire components prepared from compositions including mercapto-functional siloxanes

A vulcanizate prepared by a method comprising introducing an elastomer, a filler, and a mercapto-functional siloxane to form a masterbatch and introducing a curative to the masterbatch to form a vulcanizable composition.. . ... Bridgestone Corporation

11/17/16 / #20160332491

Rounded stone ejectors

A pneumatic tire includes a tread portion having a tread groove having a groove bottom and groove sidewalls. A row of rounded stone ejectors are spaced apart along a length of the groove. ... Bridgestone Corporation

11/17/16 / #20160332488

Heavy-duty pneumatic tire

A heavy-duty pneumatic tire having block land portions in a tread surface can reduce the tire circumferential shearing strain and heat generation in the tread portion to prevent the separation failure between the tread rubber and the belt more effectively. A heavy-duty pneumatic tire has, in a tread surface, blocks defined by a plurality of circumferential main grooves each continuously extending in a tire circumferential direction and a plurality of transverse grooves each communicating between circumferential main grooves adjacent in a tire width direction, wherein in a tire widthwise area that centers on a tire equator and whose width in the tire width direction is 50% of a tread width: at least one of the blocks has a block partitioning groove that is open to each of transverse grooves defining the block and is shallower than the circumferential main grooves, to divide the block into a plurality of small blocks; and at least one of the small blocks has a block auxiliary groove that is open to the block partitioning groove at one end and open to a corresponding circumferential main groove or transverse groove at an other end and is shallower than the circumferential main grooves.. ... Bridgestone Corporation

11/17/16 / #20160332042

Golf club head

A hollow golf club head having a face part, a sole part, a side part, a crown part, and a hosel part, comprises one or more of inner ribs that are disposed on at least one of the sole part and the side part and that inwardly project from an inner surface of the one, one or more of outer ribs that are disposed on at least the one of the sole part and the side part and that outwardly project from an outer surface of the one, and one of the inner ribs is arranged between the outer ribs in a toe-to-heel direction.. . ... Bridgestone Corporation

11/10/16 / #20160327517

Sensor, and monitoring system

A sensor and monitoring system that can prevent the accumulation of scraps of a transport object on the sensor are provided. A sensor 4 is located below a return-side portion 2a of a conveyor belt 2, and includes: a detector 40 that detects a detection object 3 embedded in the conveyor belt; and a cover 41 covering at least an upper part of the detector, wherein the cover has a downward surface 411 that extends continuously downward from a top part of the cover while extending outward in the horizontal direction.. ... Bridgestone Corporation

11/10/16 / #20160325590

Tire with grooves having variable depth

A tire includes annular beads, a body ply extending between the annular beads, and a circumferential belt disposed radially outward of the body ply. The tire further includes a circumferential tread disposed radially outward of the circumferential belt. ... Bridgestone Corporation

11/10/16 / #20160325588

Pneumatic tire

A tire, wherein, in a cross section in the tire width direction thereof in a state where the tire has substantially not been inflated with no load applied thereon, provided that the maximum height in the tire radial direction of the carcass is h, a radius of curvature of the carcass within a height range 0.91 h-h measured from the radially innermost position of the carcass is r7, an acute inclination angle specifically defined in the height range 0.91 h-h is θ7, the intermediate value of a radius of curvature in the height range 0.82 h-0.91 h is r6, a radius of curvature in the height range 0.63 h-0.82 h is r5, and an acute inclination angle specifically defined in the height range 0.63 h-0.82 h is θ5, r7≧0.26h, θ7≧14°, r6<r7, r5>r6, and θ5≦23°.. . ... Bridgestone Corporation

11/10/16 / #20160325517

Systems and methods for forming retread tires using flat backed tread

Retreaded tires and methods for manufacturing the same. A tire is retreaded with a pre-cured tread band having a smooth back face and one or more tread grooves with compliant skid base gauge on a front face. ... Bridgestone Corporation

11/10/16 / #20160325516

Tire mold vent

A tire mold vent assembly includes a cylindrical vent housing having a slot defined therein along the length of the housing to provide a circumferential flexibility to the vent housing. An elastomeric insert is received in the slot and includes a head extending laterally from one end of the housing. ... Bridgestone Corporation

11/03/16 / #20160318353

Tire tread having a flexible gate apparatus

Various embodiments of a tire tread having one or more flexible gate apparatuses are disclosed. In one embodiment, a tire having a tread is provided, the tire comprising: a groove comprising a groove base and at least one groove sidewall; at least one flexible gate apparatus comprising a plurality of adjacent flexible gate elements oriented in a single row across at least a portion of the groove; wherein the plurality of flexible gate elements extend from the groove base; wherein the at least one flexible gate apparatus comprises a rigidity such that the at least one flexible gate apparatus does not substantially deflect at the application of an air pressure during operation; and wherein the at least one flexible gate apparatus comprises a rigidity such that the at least one flexible gate apparatus deflects at the application of a water pressure during operation.. ... Bridgestone Corporation

11/03/16 / #20160318351

Tire having circumferentially biased sipe depths

A tire includes a tread having a first plurality of tread blocks on a first side of an equatorial plane and a second plurality of tread blocks on the second side. Each of the first plurality of tread blocks has a first leading lug wall, a first trailing lug wall, a first leading sipe proximate to the first leading lug wall, and a first trailing sipe proximate to the first trailing lug wall. ... Bridgestone Corporation

11/03/16 / #20160318272

Precured tire tread having prepared edge and method of making same

A precured tire tread includes a top surface having a plurality of tread elements thereon, a bottom surface, a front surface, and a rear surface. At least one of the front surface and the rear surface is a roughened surface that is substantially devoid of nonstick surface agents.. ... Bridgestone Corporation

11/03/16 / #20160318271

Elevated pressure and temperature tire curing utilizing liquids

A method provides a retreaded tire by curing a tread with tread lugs extending from an under tread and tread voids between the tread lugs onto a tire casing. The tread and at least a portion of the tire casing are sealed in an envelope in a manner that provides voids, including the tread voids, within the seal of the envelope. ... Bridgestone Corporation

11/03/16 / #20160318270

Tire buffing apparatus with belt detection system

A tire buffing apparatus for a tire casing having a plurality of steel belts arranged therein is provided. The tire buffing apparatus including a hub assembly for supporting and rotating a tire casing and a rasp assembly including a rotatable rasp for buffing a tire casing. ... Bridgestone Corporation

11/03/16 / #20160318269

Stitching device and stitching method

An object of the disclosure is to provide a stitching device and a stitching method enabling a stitching jig to be orthogonally pressed against a predetermined surface portion of a tire intermediate member or assembly. The stitching device is characteristically structured such that a fulcrum portion is movable in the tire width direction of the tire intermediate member and/or the fulcrum portion and the stitching portion are positioned on one side and the other side with respect to the tire equatorial plane of the tire intermediate member, respectively. ... Bridgestone Corporation

10/27/16 / #20160313215

Apparatus for determining concentric mounting of a tire on a wheel

An apparatus for determining concentric mounting of a tire on a wheel is provided. In one embodiment, an apparatus for determining concentric mounting of a tire on a wheel is provided, the apparatus comprising: a head portion including a viewfinder; a body portion including at least one index member; and a neck portion connecting the head portion to the body portion.. ... Bridgestone Corporation

10/27/16 / #20160311271

Tire having static charge dissipation element

Various embodiments of a tire and tire tread having a static charge dissipation element are provided.. . ... Bridgestone Corporation

10/27/16 / #20160311268

Tires and other objects having an aerodynamic/hydrodynamic surface treatment

Various embodiments of a tire, and other objects, having an aerodynamic and/or hydrodynamic surface treatment are disclosed.. . ... Bridgestone Corporation

10/27/16 / #20160311264

Heavy duty pneumatic tire

This heavy duty pneumatic tire includes a block (6) on a tread surface (1). Shallow grooves are provided in the block. ... Bridgestone Corporation

10/27/16 / #20160311186

Method of preparing a bottom surface of a precured tire tread

A method of preparing a precured tire tread includes forming a green tire tread strip having a top surface and a bottom surface. The method also includes curing the green tire tread strip to form a precured tire tread having a top surface and a bottom surface. ... Bridgestone Corporation

10/27/16 / #20160311185

Curing bladder comprised of materials with varying thermal conductivity

Various embodiments of a curing bladder comprised of materials with varying thermal conductivity are disclosed.. . ... Bridgestone Corporation

10/20/16 / #20160307169

System and method for recycling tires including tire pyrolysis

A shredded tire credit is used in methods and systems for recycling tires to enhance the efficiency of tire recycling sites distributed over large areas. A scrap tire delivery is sent to a scrap tire processor at a first shred facility for conversion into shredded tire product. ... Bridgestone Corporation

10/20/16 / #20160304707

Process for preparing blends of cis-1,4-polybutadiene and syndiotactic 1,2-polybutadiene

A process for preparing a blend of cis-1,4-polybutadiene and syndiotactic 1,2 polybutadiene, the process comprising the steps of (i) polymerizing 1,3-butadiene in the presence of a lanthanide-based catalyst to form a polymerization mixture including cis-1,4-polybutadiene, and (ii) polymerizing 1,3-butadiene in the presence of a cobalt-based catalyst within the polymerization mixture including cis-1,4-polybutadiene to form syndiotactic 1,2-polybutadiene and thereby produce a blend of cis-1,4-polybutadiene and syndiotactic 1,2-polybutadiene.. . ... Bridgestone Corporation

10/20/16 / #20160303921

Tire having an electronic device in a lower sidewall

A tire includes a pair of bead portions having a bead and a bead filler. A pair of reinforcement fillers has an inner surface with an upper portion contacting an outer surface of a respective bead filler, a middle portion contacting an outer surface of a respective turn up portion of a body ply, and a lower portion contacting an outer surface of a wire reinforcement. ... Bridgestone Corporation

10/20/16 / #20160303920

Tire construction having a continuous body ply turn up structure

A pneumatic tire construction is provided using one or more folded body ply sheets constructed such that upon formation of the tire, the turn-ups in the sidewalls are looped turn-ups such that there are no free turn-up ends in the sidewalls.. . ... Bridgestone Corporation

10/20/16 / #20160303918

Tire

A tire includes primary inclined grooves and auxiliary inclined grooves. Each primary inclined groove has a first gently inclined portion and a first steeply inclined portion. ... Bridgestone Corporation

10/20/16 / #20160303917

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

10/20/16 / #20160303906

Tyre comprising a graphite or graphene cover film deposited on an inner-layer surface

A tyre having a rubber inner layer facing the inner cavity of the carcass; and a cover film made entirely of graphite or graphene and deposited on a surface of the inner layer.. . ... Bridgestone Corporation

10/20/16 / #20160303905

Tire, and tire manufacturing method

Provided is a tire having at least a circular tire frame formed of a thermoplastic resin material, the tire including a reinforcing cord member that forms a reinforcing cord layer on the outer circumference of the tire frame, and the thermoplastic resin material including at least a polyamide-based thermoplastic elastomer.. . ... Bridgestone Corporation

10/20/16 / #20160303832

Adhesive sheet, manufacturing method therefor, and laminate

An adhesive sheet includes an adhesive composition layer. The adhesive composition layer is formed using a composition including a polythiol compound, a compound having plural epoxy groups, a radical generator and an amine-based catalyst. ... Bridgestone Corporation

10/13/16 / #20160298716

Vibration isolator

. . A vibration isolator (10) includes a first attachment member (11), a second attachment member (12), an elastic body (13), and a partition member (16) configured to partition a liquid chamber in the first attachment member in which a liquid (l) is sealed into a first liquid chamber (14) and a second liquid chamber (15). A communicating passage (30) configured to communicate the first liquid chamber with the second liquid chamber is provided in the partition member. ... Bridgestone Corporation

10/13/16 / #20160297913

Elastomeric compounds having increased cold flow resistance and methods producing the same

Elastomeric compounds having increased cold flow resistance may be obtained by utilizing from 10-100 phr of a functionalized rubbery polymer containing specified types of functionalizing units, at least 0.01 phr of a multivalent metal organic salt and 0-90 phr of at least one additional rubbery polymer.. . ... Bridgestone Corporation

10/13/16 / #20160297258

Tyre with an improved joint between the sidewalls and corresponding abrasion gum strips

A tyre (1) having: an at least partially turned-up body ply (3); two beads (4) arranged on opposite sides of the body ply (3) and surrounded by the body ply (3); a tread (7) supported by the body ply (3); two side walls (11) arranged outside the body ply (3) between the tread (7) and the beads (4); and two abrasion gum strips (12) located externally below the sidewalls (11) and at the beads (4); wherein a joining surface (13) between each side wall (11) and the corresponding abrasion gum strip (12) has in cross-section a “u”-like shape (fig. 3).. ... Bridgestone Corporation

10/13/16 / #20160297244

Non-pneumatic tire

In a non-pneumatic tire, central portions in an extension direction of first elastic connecting plates (21) and central portions in an extension direction of second elastic connecting plates (22) are spaced from each other in a tire width direction (h) by a distance of 0.25 to 0.9 times an outer tube width (w1) serving as a size in the tire width direction (h) of an outer tubular body (13), edges of a first side in the tire width direction (h) of first end portions (21a) of the first elastic connecting plates (21) are disposed at the same positions in the tire width direction (h) as edges of the first side in the tire width direction (h) of the outer tubular body (13) or disposed inside in the tire width direction (h) of the edge of the first side in the tire width direction (h) of the outer tubular body (13) within a distance of 0.1 times the outer tube width (w1) or less, and edges of a second side in the tire width direction (h) of first end portions (22a) of the second elastic connecting plates (22) are disposed at the same positions in the tire width direction (h) as an edge of the second side in the tire width direction (h) of the outer tubular body (13) or disposed inside in the tire width direction (h) of the edge of the second side in the tire width direction (h) of the outer tubular body (13) within a distance of 0.1 times the outer tube width (w1) or less.. . ... Bridgestone Corporation

10/06/16 / #20160289355

Polymers functionalized with activated nitrogen heterocycles containing a pendant functional group

A method for preparing a functionalized polymer, the method comprising the steps of (i) preparing a halocarbon-activated nitrogen heterocycle containing a functional group, (ii) preparing a reactive polymer, and (iii) reacting the reactive polymer with the halocarbon-activated nitrogen heterocycle containing a functional group.. . ... Bridgestone Corporation

10/06/16 / #20160289354

Polymers functionalized with activated nitrogen heterocycles containing a pendant functional group

A method for preparing a functionalized polymer, the method comprising the steps of (i) preparing a halosilane-activated nitrogen heterocycle containing a functional group, (ii) preparing a reactive polymer, and (iii) reacting the reactive polymer with the halosilane-activated nitrogen heterocycle containing a functional group.. . ... Bridgestone Corporation

10/06/16 / #20160288585

Pneumatic tire

This disclosure aims to achieve reduction in rolling resistance and ensure excellent steering stability. In this disclosure, a tire widthwise maximum width of a carcass is 1.35 w or less; a tire outer surface has a recess; within a second height range h2 and on the outer side in a tire radial direction with respect to bead cores, a radius of curvature of the carcass is 0.46 h or more; within a third height range h3, the radius of curvature of the carcass is 0.62 h or more; during movement of a virtual point from a bead core height position hbc toward a third height position h3, a tire gauge at the virtual point is reduced by a reduction amount of 0.025×g0/mm or less; and the tire gauge at the virtual point at the third height position h3 is 10% or more of the tire widthwise maximum width of the bead core.. ... Bridgestone Corporation

09/29/16 / #20160281814

Vibration damping device

. . A vibration damping device (10) includes a first attachment member (11) and a second attachment member (12), an elastic body (13) configured to couple the attachment members (11 and 12) to each other, and partition members (16) configured to partition a liquid chamber in the first attachment member (11) in which a liquid (l) is sealed into the first liquid chamber (14) and the second liquid chamber (15). A communicating passage (30) configured to communicate the first liquid chamber (14) with the second liquid chamber (15) is provided in the partition members (16). ... Bridgestone Corporation

09/29/16 / #20160281312

Apparatus, program, and method for controlling automatic spray of antifreezing agent

The invention provides an apparatus, program, and method for controlling the automatic spraying of an antifreezing agent that can reduce the cost of the antifreezing agent and the impact of salt damages caused by the antifreezing agent. This is accomplished by reducing the amount of antifreezing agent to be sprayed automatically according to road surface condition and reducing the amount of the antifreezing agent left unused on completion of the spray operation by grasping in advance the total spray amount of the antifreezing agent. ... Bridgestone Corporation

09/29/16 / #20160281227

Susceptor

Provided is a susceptor capable of achieving improved thermal uniformity while suppressing reduction in its temperature increase rate and heat utilization efficiency. A susceptor includes a plate-shaped first member including a wafer placement surface on which to place a wafer, and a second member supporting the first member and laid on the first member in the direction perpendicular to the wafer placement surface. ... Bridgestone Corporation

09/29/16 / #20160280886

A rubber compound for tyre production

A rubber compound for tyres comprising a cross-linkable unsaturated chain polymer base comprising, in turn, at least a rubber of synthetic origin, a silica-free filler at least partially comprising carbon black, a vulcanization system and a mercapto carboxylic acid.. . ... Bridgestone Corporation

09/29/16 / #20160280519

Tire lift cable guide assembly

Implementations described herein relate to guide assemblies for a tire lift assembly. The guide assembly includes a mounting plate, a support structure extending from the mounting plate, and rollers. ... Bridgestone Corporation

09/29/16 / #20160280014

Method and apparatus for estimating uneven tire wear

A method and an apparatus for estimating uneven wear in the tire shoulder with high accuracy using a fewer number of sensors are provided. An uneven tire wear estimating apparatus includes an acceleration sensor (11) disposed on an inner surface of a tire tread for measuring radial acceleration, an acceleration waveform extracting means (12) for extracting an acceleration waveform in a post-trailing-end domain from output signals of the acceleration sensor, means for calculating a vibration level α of an uneven wear measured band and a vibration level β of a reference band from the extracted acceleration waveform, an uneven wear determination index calculating means (16) for calculating an uneven wear determination index γ, which is an index for determining au uneven wear, from the vibration level α and the vibration level β, and a determining means (18) for determining whether an uneven wear is occurring in an edge of the tire shoulder from the value of the uneven wear determination index γ.. ... Bridgestone Corporation

09/29/16 / #20160280010

Tire

A passenger vehicle pneumatic tire comprising: a carcass; and inclined belt layers and a circumferential belt layer, wherein: the inclined belt layers include at least two inclined belt layers having different tire widthwise widths; an inclination angle θ1 with respect to the tire circumferential direction of the cords forming the inclined belt layer having the widest width and an inclination angle θ2 with respect to the tire circumferential direction of the cords forming the inclined belt layer having the narrowest width satisfy correlations that 30°≦θ1≦85°, 10°≦θ2≦30°, and θ1>θ2; and a tire widthwise width w1 of the inclined belt layer having the widest width and a tire widthwise width w2 of the inclined belt layer having the narrowest width satisfy a correlation that w2≦0.6 w1.. . ... Bridgestone Corporation

09/29/16 / #20160280008

Tire and manufacturing method for same

Provided is a tire having a circular tire frame formed of at least a thermoplastic resin material, in which the tire includes a reinforcing cord member that forms a reinforcing cord layer on an outer circumference of the tire frame, and the thermoplastic resin material contains at least a polyester-based thermoplastic elastomer.. . ... Bridgestone Corporation

09/22/16 / #20160272014

Run-flat radial tire

A run-flat radial tire (10) including a carcass (14) spanning between a pair of bead portions (12), a side reinforcement layer (24) provided to tire side portions (22), an inclined belt layer (16) provided at the tire radial direction outside of the carcass (14) and including cord inclined to a tire circumferential direction, a belt reinforcement layer (18) provided at the tire radial direction outside of the inclined belt layer (16) and including cord extending along the tire circumferential direction, and a reinforcement cord layer (32) provided at a tire radial direction outside of the belt reinforcement layer (18) and including cord inclined to the tire circumferential direction.. . ... Bridgestone Corporation

09/22/16 / #20160272011

Pneumatic tire

A tread section is formed with plural circumferential direction main grooves extending around a tire circumferential direction, and is formed with a first rib and a second rib between the plural circumferential direction main grooves. The first rib and the second rib are formed with first arc shaped faces that have arc shapes about centers within the ribs. ... Bridgestone Corporation

09/22/16 / #20160272007

Pneumatic tire

A pneumatic tire includes a tread portion, carcass, inclined belt, and circumferential belt. The inclined belt is formed by inclined belt layer(s) including cords inclined relative to the tire circumferential direction. ... Bridgestone Corporation

09/22/16 / #20160272006

Non-pneumatic tire

Provided is a non-pneumatic tire in which a plurality of curved sectionss (21d) to (21f) and (22d) to (22f) curved inward in a tire circumferential direction are formed at elastic connecting plates (21) and (22) in an extension direction in which the elastic connecting plates (21) and (22) extend when seen in a tire side view such that curved directions are alternately opposite to each other in the extension direction, outer curved sections (21e) and (22e), inner curved sections (21d) and (22d), and extension sections (21i) (22i) extending throughout both of the curved sections and in which inflection sections (21g) and (22g) formed between both of the curved sections are disposed, are formed at the elastic connecting plates (21) and (22), and the extension sections (21i) and (22i) extend along reference lines having radii of curvature larger than that of the outer curved sections (21e) and (22e) and the inner curved sections (21d) and (22d) when seen in the tire side view and extend from first end portions (21a) and (22a) of the elastic connecting plates (21) and (22) connected to an outer tubular body (13) to arrive at a central portion in at least the extension direction.. . ... Bridgestone Corporation

09/22/16 / #20160272005

Pneumatic tire

Pneumatic tire wherein a rubber layer (a) is disposed as an inner liner at an innermost layer side of the tire, and a rubber layer (b) disposed between the above inner liner and a carcass ply layer and adjacent to the above inner liner comprises a rubber composition containing a natural rubber alone or a natural rubber and a synthetic diene rubber as a rubber component, wherein rubber layer (a) contains a butyl rubber alone or a blend rubber of a diene rubber and a specific amount of a butyl rubber as a rubber component; rubber layer (b) contains a bismaleimide compound as a cross-linking agent, sulfur and a vulcanization accelerator; a blend amount of the sulfur and a blend amount of the vulcanization accelerator are modified to specific ranges; and an elongation at break after subjected to air heat aging at 100° c. For 250 hours is 150% or more.. ... Bridgestone Corporation

09/15/16 / #20160264698

Processes for the preparation of high-cis polydienes

Disclosed herein are solution polymerization processes for producing a high-cis polydiene. The processes include polymerizing at least one conjugated diene monomer in an organic solvent in the presence of at least one thiol compound and a lanthanide-based catalyst composition to produce a polydiene having a cis-1,4-linkage content of 90-99%. ... Bridgestone Corporation

09/15/16 / #20160263952

Tire inspection apparatus

In order to provide a tire inspection apparatus which is capable of identifying, when performing an appearance inspection of a tire, a location of a rubber burr from a captured image of a tire side and avoiding detection of the rubber burr as a defect in a subsequent inspection step using image processing, the tire inspection apparatus is provided with a storage unit for storing a model pattern of a molded object to be molded on the tire side to be inspected and a master image of the tire side, the master image being prepared when the molded object(s) and an unnecessary molded object(s) are molded together as a conforming article, a model pattern locating unit for locating the model pattern on the captured image of the tire side to be inspected in a position of the captured image showing a highest degree of agreement, and an unnecessary molded object location identifying unit for identifying a location of the unnecessary molded object from the captured image by comparing the position of the model pattern located on the captured image against a position of the model pattern on the master image.. . ... Bridgestone Corporation

09/15/16 / #20160263948

Run-flat radial tire

A run-flat radial tire includes: a carcass spanning between a pair of bead portions; a side reinforcement layer disposed at tire side portions; and a reinforcement cord layer that is disposed at a tire radial direction outside of the carcass, that comprises cord inclined to a tire circumferential direction at an angle of inclination of from 60 degrees to 90 degrees, and that is disposed such that, when the side reinforcement layer is projected along a tire radial direction, the reinforcement cord layer overlaps with a projected length of the side reinforcement layer in a region of 6% of a tread width of a tread portion, or greater.. . ... Bridgestone Corporation

09/15/16 / #20160263947

Tyre and tyre building method

A tyre (1) and method for building a tyre (1), wherein the tyre has: two annular beads (3); a toroidal body ply (2) which is wound about the two beads (3) to form two turn-ups (4); and two bead fillers (8), each one thereof contacts a bead (3), it is at least partly enclosed in a turn-up (4) of the body ply (2) and comprises an elastomer filler strip (9) which is wound about the bead (3), it is interposed between the bead (3) and the body ply (2) and has two opposite ends (10, 11) located on opposite sides of the bead (3) and contacting each other; an outer end (11) of the filler strip (9) of each bead filler (8) is folded into a “u” about the corresponding end of the body ply (2) so as to enclose the end of the body ply (2).. . ... Bridgestone Corporation

09/08/16 / #20160257169

Tire

A pneumatic tire that makes steering stability, rolling resistance performance, and noise performance compatible includes a carcass toroidally extending between two bead portions; an inclined belt, with inclined belt layer(s) including cords that extend at an inclination relative to a tire circumferential direction, and a circumferential belt, with circumferential belt layer(s) including cords that extend along the tire circumferential direction, radially at an outer side of a crown portion of the carcass; and a tread at an outer side of the circumferential belt in the tire radial direction. An inclination angle of the cords in the inclined belt layers is 35° to 90°, the circumferential belt has a higher tire circumferential direction rigidity per unit width in a central region including a tire equator than in other regions, and in a surface region including the tire equator, the tread includes a land portion continuous in the tire circumferential direction.. ... Bridgestone Corporation

09/08/16 / #20160257168

Tire

A tire comprising: a carcass; and inclined belt layers and a circumferential belt layer, wherein: the circumferential belt layer satisfies a correlation that x≧750 when it is defined that x=y×n×m, where y is a young's modulus in gpa of the cords forming the circumferential belt layer, n is a number of the cords implanted per 50 mm of width, and m is a number of layers of the circumferential belt layer; the inclined belt layers comprise at least two inclined belt layers having different tire widthwise widths; and a tire widthwise width w1 of an inclined belt layer having a widest width and a tire widthwise width w2 of an inclined belt layer having a narrowest width satisfy a correlation that w2≦0.6 w1.. . ... Bridgestone Corporation

09/08/16 / #20160257167

Tire innerliner with carbon black blend

A tire comprising an innerliner, where the inner-liner includes a rubber, a first carbon black having a statistical thickness surface area of at least 50 m2/g, and a second carbon black having a statistical thickness surface area of at most 45 m2/g.. . ... Bridgestone Corporation

09/08/16 / #20160256750

Golf ball and method of manufacture

In a golf ball having a core and a cover of one or more layers, letting the core diameter be d (mm), the cover thickness be t (mm) and the core and ball deflections when compressed under a final load of 1,275 n (130 kgf) from an initial load state of 98 n (10 kgf) be 5 (mm) and b (mm), the following conditions are satisfied: (1) 30≧d/t≧24, (2) 3.9≧e/t≧3.0, and (3) 1.18≧e/b≧1.09. This golf ball provides an excellent flight, performance and a soft feel at impact when used by golfers whose head speed is not very fast, such as senior golfers and women golfers. ... Bridgestone Corporation

09/01/16 / #20160251502

New class of rubber product anti-aging agents

. . Use, as an anti-aging agent in polymer compounds, stilbene family compound of general formula (i): wherein the substitutes are selected from the following five combinations: a) r1, r3 and r5 are oh; r2, r4 and r6 are h; b) r1 and r4 are och3; r2 and r5 are oh; r3 and r6 are h; c) r1 and r4 are oh; r2 and r5 are oc(ch3)3; r3 and r6 are h; d) r1 and r4 are och3; r2 and r5 are oh; r3 and r6 are c(ch3)3; e) r1 and r4 are oc(ch3)3; r2 and r5 are oh; r3 and r6 are h.. . ... Bridgestone Corporation

09/01/16 / #20160250900

Run-flat radial tire

A run-flat radial tire including a carcass spanning between a pair of bead portions, a side reinforcement layer provided to tire side portions coupling the bead portion and the tread portion together, and a reinforcement cord layer. The reinforcement cord layer is provided at a tire radial direction outside of the carcass, includes cord inclined to a tire circumferential direction at an angle of inclination of from 60 degrees to 90 degrees, and is disposed such that, when the side reinforcement layer is projected along a tire radial direction, an overlap width p of the reinforcement cord layer overlapping with the side reinforcement layer has a length of 7.5% of a tire section height, or greater.. ... Bridgestone Corporation

09/01/16 / #20160250895

Tire with pre-formed tread and method of making same

A tire manufacturing method includes providing a green carcass and forming a plurality of green tread segments by a compression molding process. The method further includes assembling the plurality of green tread segments about the green carcass, thereby forming a green carcass and tread assembly, the tread having at least two bars and at least one void. ... Bridgestone Corporation

09/01/16 / #20160250893

Non-pneumatic tire

A connecting member (15) includes a plurality of elastic connecting plates (21) and (22) having both end portions connected to an attachment body and an outer tubular body (13) in a tire width direction (h), outer end portions connected to outer tubular bodies (13) of at least one of the elastic connecting plates (21) and (22) among the plurality of elastic connecting plates disposed in the tire width direction (h) overhang the other portion at both sides in the tire width direction (h), the outer end portion has an overhanging quantity (w1) of an outside outer end portion (25) outward in the tire width direction (h) from an outer end portion main body (27) that is equal to or larger than an overhanging quantity (w2) of an inside outer end portion (26) overhanging the outer end portion main body (27) inward in the tire width direction (h), the length (l1) of the outside outer end portion (25) in the extension direction of the elastic connecting plates (21) and (22) is equal to or larger than a length (l2) of the inside outer end portion (26) in the extension direction, and a cross-sectional area of the outside outer end portion (25) perpendicular to a plate thickness direction of the elastic connecting plates (21) and (22) is larger than a cross-sectional area of the inside outer end portion (26) perpendicular to the plate thickness direction.. . ... Bridgestone Corporation

08/25/16 / #20160245364

Vibration-damping device

Swirl chamber units (31) allowing a first liquid chamber (14) and a second liquid chamber (15) to communicate with each other are formed in a partitioning member of a vibration-damping device (10) of the present invention. Each swirl chamber unit (31) includes a first communication hole (32a) opening to the first liquid chamber (14), and a second communication hole (32b) opening to the second liquid chamber (15); a first swirl chamber (33a) communicating with the first liquid chamber (14) via the first communication hole (32a), and a second swirl chamber (33b) communicating with the second liquid chamber (15) via the second communication hole (32b); and a flow regulation passage (34) that allows the first swirl chamber (33a) and the second swirl chamber (33b) to communicate with each other and opens to the swirl chambers (33a, 33b) in circumferential directions of the respective swirl chambers (33a, 33b). ... Bridgestone Corporation

08/25/16 / #20160243890

Non-pneumatic tire

A non-pneumatic tire includes an attachment body (11) attached to an axle, an inner tubular body (12) fitted onto the attachment body (11) from the outside, an outer tubular body (13) configured to surround the inner tubular body (12) from the outside in a tire radial direction, and a plurality of connecting members (15) disposed between the inner tubular body (12) and the outer tubular body (13) in a tire circumferential direction and configured to connect both of the tubular bodies (12) and (13) while maintaining relative elastic displacement therebetween, wherein at least one of an outer circumferential section of the attachment body (11) and an inner circumferential section of the inner tubular body (12) that are locked to each other is inclined throughout the circumference in the tire circumferential direction from the outside toward the inside in a tire radial direction as it goes from both of the outsides toward the inside in a tire width direction (h), and is formed in a v shape when seen in a cross-sectional view in the tire width direction (h).. . ... Bridgestone Corporation

08/18/16 / #20160237186

Method for producing polydienes and polydiene copolymers with reduced cold flow

A method for preparing a coupled polymer, the method comprising the steps of (i) polymerizing monomer to form a reactive polymer, and (ii) reacting the reactive polymer with an imide compound containing an oxiranyl group.. . ... Bridgestone Corporation

08/18/16 / #20160237181

Vinyl modifier composition and processes for utilizing such composition

An oxolanyl compound-containing composition comprising specified amounts of the meso-isomer of one or more of the oxolanyl compounds of specified structure is provided. Also provided are methods for the use of such compositions as vinyl content modifiers in polymerization processes.. ... Bridgestone Corporation

08/18/16 / #20160237179

Polymers functionalized with imine compounds containing a cyano 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 cyano group.. . ... Bridgestone Corporation

08/18/16 / #20160236519

Tire

An object is to improve noise performance of a tire while enhancing movement performance thereof. At least one of the land portions (20) includes an outer wall surface (30) positioned on a vehicle outer side, an inner wall surface (31) positioned on a vehicle inner side, a tread surface (32) on an outer side in a tire radial direction, an outer edge (33) of the tread surface (32) in contact with the outer wall surface (30), and an inner edge (34) of the tread surface (32) in contact with the inner wall surface (31). ... Bridgestone Corporation

08/18/16 / #20160236518

Pneumatic tire

The pneumatic tire of this disclosure includes on a tread surface at least one circumferential main groove having a groove width cyclically varying, and a lib-like land portion, wherein: among the lib-like land portions, a lib-like land portion disposed on at least one side of the circumferential main groove is formed in a shape such that: an outline shape of the lib-like land portion has a shape forming a protrusion, a tire widthwise position of the apex being equal on a tire circumference; a widthwise end portion adjacent to the circumferential main groove of the lib-like land portion is located on a side 0.3 mm or more inner than a position of the apex; an area on a tire widthwise end side of the tread surface of the lib-like land portion has a descending area with a width of 3% or more of the width of the lib-like land portion.. . ... Bridgestone Corporation

08/18/16 / #20160236514

Non-pneumatic tire

In a non-pneumatic tire, a plurality of first to third curved sections (21d) to (21f) and (22d) to (22f) curved in a tire circumferential direction are formed at first and second elastic connecting plates (21) and (22) in an extension direction in which the first and second elastic connecting plates extend, in a tire side view when a non-pneumatic tire (1) is seen from a tire width direction (h), curved directions of the first to third curved sections neighboring in the extension direction are opposite to each other, and each of the first and second elastic connecting plates, and inflection sections (21g), (21h), (22g) and (22h) disposed between the first to third curved sections neighboring in the extension direction has a smaller cross-sectional area than other portions.. . ... Bridgestone Corporation

08/18/16 / #20160236513

Pneumatic radial tire for a passenger vehicle and method of using the same

A pneumatic radial tire for a passenger vehicle according to the present invention has an appropriate relationship between a tire cross-sectional width sw and a tire outer diameter od. Also, a method of using the pneumatic radial tire for a passenger vehicle according to the present invention is to use the above radial tire with at least specified internal pressure.. ... Bridgestone Corporation

08/18/16 / #20160236512

Pneumatic radial tire for a passenger vehicle and method of using the same

A pneumatic radial tire for a passenger vehicle according to the present invention has an appropriate relationship between a tire cross-sectional width sw and a tire outer diameter od. Also, a method of using the pneumatic radial tire for a passenger vehicle according to the present invention is to use the above radial tire with at least specified internal pressure.. ... Bridgestone Corporation

08/11/16 / #20160229926

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

08/04/16 / #20160223048

Vibration-damping device

A vibration-damping device (10) of the invention includes a tubular first attachment member (11) and a second attachment member (12); an elastic body (13); a partitioning member (17) that forms a main liquid chamber (14), a first auxiliary liquid chamber (15), and a second auxiliary liquid chamber (16); a first diaphragm (18) that constitutes a portion of the wall surface of the first auxiliary liquid chamber (15); and a second diaphragm (19) that constitutes a portion of the wall surface of the second auxiliary liquid chamber (16) and that has a smaller deformation resistance than the deformation resistance of the first diaphragm (18). The partitioning member (17) is provided with an idle orifice (31) that allows the main liquid chamber (14) and the first auxiliary liquid chamber (15) to communicate with each other and that produces resonance with respect to the input of an idle vibration, and a shake orifice (32) that allows the main liquid chamber (14) and the second auxiliary liquid chamber (16) to communicate with each other and that produces resonance with respect to the input of a shake vibration. ... Bridgestone Corporation

08/04/16 / #20160221396

Tire

A tire (100) is configured such that, when the distance between a pair of ground contact ends (11e) is a ground contact width (w), the tire (100) has shoulder regions (10s) which each constitutes a range of 0.20w to 0.30w from one of the pair of ground contact ends toward the inner side of the tire in the width direction (tw) thereof. In a cross-section of the tire taken in the width direction (tw) and radial direction (tr) of the tire, the tread profile which is the outer shape of the shoulder regions (10s) is defined by n radii of curvature (sr(n)) (n=1 to n), the n radii of curvature being arranged sequentially from the inner side of the width direction (tw) of the tire. ... Bridgestone Corporation

08/04/16 / #20160221287

Method of joining two rubber tyre portions

A method of joining two rubber tyre portions, the method including applying a water-based adhesive compound to at least one surface of one of the two portions; and joining the two rubber portions. The water-based adhesive compound has water as a solvent, a cross-linkable, unsaturated-chain polymer base, and an emulsifier with a cmc value of 0.1 to 12 mmol/l, and an hlb value of 1 to 45.. ... Bridgestone Corporation

07/28/16 / #20160218024

Susceptor

A bearing (12) being a recessed section that receives a spindle (20) is provided in a lower surface (10b) of a susceptor (10). The bearing (12) has a tapers from the lower surface (10b) towards an upper surface (10a). ... Bridgestone Corporation

07/21/16 / #20160207360

Heavy duty pneumatic tire

. . A heavy duty pneumatic tire includes a tread surface having, on at least a section thereof, a plurality of circumferential-direction grooves extending along a tread circumferential line and land portions defined either by the circumferential-direction grooves or by the circumferential-direction grooves and tread ground contact edges. The land portions include at least one partitioned land portion in which a plurality of narrow width-direction grooves extending in a tread width direction are provided. ... Bridgestone Corporation

07/21/16 / #20160207358

Tire with noise-reducing tread pattern

A tire includes a tire carcass and a tread extending circumferentially about the tire carcass the tread includes a plurality of tread elements disposed in a tread pattern. The plurality of tread elements have one of two different pitch lengths and are disposed in a noise-reducing pitch sequence.. ... Bridgestone Corporation

07/14/16 / #20160200900

Rubber compositions including a functionalized wax

Disclosed herein are rubber compositions suitable for use in tire treads comprising (a) at least one conjugated diene polymer or copolymer; (b) at least one filler; (c) a curative package; and (d) at least one of: (i) from 0.2 to 10 phr of at least one halogenated hydrocarbon wax, or (ii) from 0.2 to 10 phr of at least one silicone-containing wax comprising a functionalized polyalkylsiloxane, a functionalized polyalkylsilsesquioxane resin, or combinations thereof. In certain embodiments, the at least one halogenated hydrocarbon wax is a chlorinated hydrocarbon or a fluorinated hydrocarbon wax.. ... Bridgestone Corporation

07/14/16 / #20160200145

Airless tire construction having multiple layers

An airless tire has a wheel portion and a webbing extending from the wheel portion towards an axis of rotation of the airless tire. The diameter of an annular outer surface of the wheel portion varies along an axial direction of the airless tire.. ... Bridgestone Corporation

07/14/16 / #20160200058

Vulcanized tire manufacturing method and vulcanization apparatus

A vulcanization apparatus provided with a vulcanization vessel for vulcanizing a green tire and a suction line for sucking out gas from inside the vulcanization vessel after the vulcanization vessel has been opened. Accordingly, oily smoke generated when vulcanized rubber has been removed from a bladder and an inner wall of a mold can be more efficiently discharged than in cases in which gas inside a vulcanization vessel is sucked out and additional air is introduced into the vulcanization vessel only prior to opening the vulcanization vessel.. ... Bridgestone Corporation

07/14/16 / #20160199701

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 containing: (a) a base rubber, (b) an organic peroxide, and (c) water and/or a metal monocarboxylate. The core has a hardness profile which satisfies specific relationships between the jis-c hardness at the core center (cc), the jis-c hardness at a position 10 mm from the core center (c10) and the jis-c hardness at the core surface (cs).. ... Bridgestone Corporation

07/07/16 / #20160193887

Tire

A tire (1) is provided with multiple projection parts (500) in a groove bottom (50b2) of a groove portion. The projection parts (500) extend from one side wall (50b1) to the other side wall (50b3) opposed to the one side wall (50b1), the side walls forming the groove portion. ... Bridgestone Corporation

07/07/16 / #20160193885

Pneumatic tire

A pneumatic tire includes a recess formed on a groove wall surface of a circumferential groove opposite to a widthwise groove. A wall surface defined by the recess includes an inclined surface inclined towards the widthwise groove from a tire radial direction outer side towards a tire radial direction inner side and a curved surface connecting a tire radial direction inner end of the inclined surface to a bottom defined by the recess, the curved surface having a center of curvature on the side of the widthwise groove. ... Bridgestone Corporation

07/07/16 / #20160193876

Non-pneumatic tire

A non-pneumatic tire is provided including an attachment body attached to an axle, a ring member including an inner tubular body mounted onto the attachment body and an outer tubular body configured to surround the inner tubular body from the outside in a tire radial direction, and a plurality of connecting members disposed between the inner tubular body and the outer tubular body in a tire circumferential direction and configured to connect the tubular bodies to each other, wherein at least a portion of the ring member and the plurality of connecting members are integrally formed of a synthetic resin material having a breaking elongation of 8.0% or more obtained by a measurement method (23° c.) pursuant to jis k7161 and a charpy impact value of 9.4 kj/m2 or more obtained by a 23° c. Charpy impact test pursuant of iso 179-1.. ... Bridgestone Corporation

06/16/16 / #20160168757

Process for producing purified polysaccharide fibers, purified polysaccharide fibers and tires

. . . . . . A process for producing purified polysaccharide fiber of the present invention includes bringing a polysaccharide solution, which is obtained by dissolving a polysaccharide raw material in a liquid containing an ionic liquid, into contact with a solidification liquid containing an ionic liquid, and performing dry-wet spinning on polysaccharide, in which the concentration of the ionic liquid in the solidification liquid is 0.4% by weight to 70% by weight, and a distance d from a site where the polysaccharide solution is extruded in the form of fiber to a site where the extruded polysaccharide solution comes into contact with the solidification liquid is 50 mm to 120 mm.. . ... Bridgestone Corporation

06/16/16 / #20160168365

Process of producing rubber composition

Rubber composition containing at least 10 parts by mass, in 100 parts by mass of a rubber component, of a polymer component (b) containing a residue of an organic acid (a) added in a production process of the polymer, and containing from 10 to 150 parts by mass of a reinforcing filler (c), and 6 parts by mass or less in total of the residue of an organic acid (a) and an organic acid (d) used on mixing, per 100 parts by mass of the rubber component, thereby providing a rubber composition and a tire produced by using the composition, by defining the total amount of an acidic component with respect to the total mixed rubber, including an organic acid, such as stearic acid, and an organic acid contained in a residue of an emulsifier added in a production process of emulsion-polymerized sbr.. . ... Bridgestone Corporation

06/16/16 / #20160168309

Composition, adhesive agent, adhesive sheet, and laminate

The present invention provides a composition obtained by blending a polythiol compound (a), an isocyanate group-containing compound (b) and a radical generator (c), wherein the polythiol compound (a) is at least one compound selected from an aliphatic polythiol and an aromatic polythiol each of which has a thiol group binding to a primary carbon atom and may contain a hetero atom. The present invention thus provides a composition capable of bonding a rubber member, particularly a vulcanized rubber member, strongly, readily and within a short time, an adhesive and an adhesive sheet using the composition, and a laminate produced by bonding a rubber layer using at least one of these adhesive composition and adhesive sheet.. ... Bridgestone Corporation

06/16/16 / #20160167819

Method and device for crushing and discharging granular clump material in flexible container

The device and method for crushing and discharging a granular clump material in a flexible container includes a hanging step for hanging from above a flexible container containing a compacted granular clump material, a thrusting step for thrusting top portions of contact units against a bottom wall of the flexible container in regions on opposite sides of a discharge tube extending downward from a central region of the bottom wall, and a pushing step for pushing side portions of the contact units in regions from the bottom wall to side portions of the flexible container. The method and device are capable of crushing the granular clump material in the flexible container and of discharging substantially whole amount thereof.. ... Bridgestone Corporation

06/16/16 / #20160167444

Aircraft tire

A tire serving as an example of an aircraft tire includes a tread provided at intervals along a tire width direction with plural tire circumferential direction grooves that each extend along a tire circumferential direction with plural recessed portions provided in a groove bottom at intervals around the tire circumferential direction, wherein, from among plural land portions formed by the plural circumferential direction grooves, more of the recessed portions are disposed in first circumferential direction grooves that form a first land portion with a longest tire width direction length than in other second circumferential direction grooves.. . ... Bridgestone Corporation

06/16/16 / #20160167434

Non-pneumatic tire

Provided is a non-pneumatic tire including an attachment body attached to an axle, a ring-shaped body (13) configured to surround the attachment body from the outside in the tire radial direction, and a plurality of connecting members disposed between an exterior body (12) and the ring-shaped body (13) in a tire circumferential direction and configured to connect the exterior body (12) and the ring-shaped body (13) in a relatively displaceable manner, wherein, when the tire comes in contact with the ground, the connecting members are deformed by a compressive load in the tire radial direction, and the exterior body (12) and the ring-shaped body (13) are relatively displaced in the tire radial direction, among the plurality of connecting members, the connecting members disposed between the ground surface (g), with which the tire comes in contact, and the exterior body (12) abut other connecting members neighboring in the tire circumferential direction.. . ... Bridgestone Corporation

06/16/16 / #20160167263

Molded foam member manufacturing method and shock absorbing member

A molded foam member manufacturing method including: a first process of placing a foam molded first portion and a rigid member in a second portion forming mold, and pressing and fixing the rigid member against the second portion forming mold; and a second process of pouring a second portion-forming synthetic resin raw material into the second portion forming mold and foam molding a second portion so as to surround at least a portion of the rigid member and to form an integral unit with the first portion.. . ... Bridgestone Corporation

06/16/16 / #20160166892

Golf club head

A golf club head of the present invention includes a hosel portion in which a shaft is inserted, the hosel portion being provided on a heel side of the golf club head, and an extended portion that extends from the hosel portion to a back side of the golf club head. The extended portion includes a distal end portion on a face portion side and a rear end portion on the back side. ... Bridgestone Corporation

06/16/16 / #20160166891

Golf club head

A golf club head of the present invention includes a crown portion, a face portion, and a hosel portion. The crown portion includes a turbulence-promoting portion that extends from a heel side to a toe side and a back side.. ... Bridgestone Corporation

06/16/16 / #20160166887

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

06/09/16 / #20160160956

Vibration prevention device

A partition member (16) is provided with a whirl chamber unit (31a, 31b) that causes two liquid chambers to communicate with each other, the whirl chamber unit (31a, 31b) includes a whirl chamber (33a, 33b) that whirls a liquid flowing therein, a rectification passage (34a, 34b) that causes one liquid chamber to communicate with the whirl chamber (33a, 33b) and that is opened in the whirl chamber (33a, 33b) in a circumferential direction of the whirl chamber (33a, 33b), and a communication hole (32a, 32b) that causes the other liquid chamber to communicate with the whirl chamber (33a, 33b). The whirl chamber (33a, 33b) forms a whirl flow of a liquid depending on a flow rate of the liquid flowing from the rectification passage (34a, 34b) and causes the liquid to flow from the communication hole (32a, 32b). ... Bridgestone Corporation

06/09/16 / #20160159153

Motorcycle tire

A motorcycle tire includes, on an outer circumferential side of a crown region of a radial carcass, a belt layer, a single auxiliary belt layer, and a tread rubber in the stated order, a periphery width of the auxiliary belt layer being greater than a periphery width of the belt layer. The cords of the auxiliary belt layer extend in a direction in which an inclination angle of the cords of the auxiliary belt layer with respect to a tire circumferential direction gradually decreases from each of both ends of a tire equatorial region including a tire equatorial plane toward a corresponding ¼ position which is at a distance of ¼ of the periphery width of the auxiliary belt layer from the tire equatorial plane along a periphery of the auxiliary belt layer, and the inclination angle in the ¼ position is 60° or more and 85° or less.. ... Bridgestone Corporation

06/09/16 / #20160159149

Run-flat tire

A run-flat tire (10) includes: a pair of bead portions (12); side wall portions 14 that are respectively connected to the bead portions (12); a carcass (16) that spans between the pair of bead portions (12) and that includes a main body portion (16a) positioned between bead cores (24), and a folded-back portion (16b) folded back from an inner side toward an outer side about each bead core (24); a tread (18) that is provided at the tire radial direction outer side of the main body portion (16a); a side reinforcing layer (20) that is disposed at a tire width direction inner side of the main body portion (16a) and that is configured so as to respectively gradually decrease in thickness toward a crown portion (16c) of the carcass (16) and toward the bead portion (12); and side rubber (22) (a side layer) that is disposed in the side wall portion (14) at the tire outer side of the main body portion (16a), that configures a tire outer face, and that satisfies gs/gt6≦0.35, wherein gs is a thickness of the side rubber (22) and gt6 is an overall thickness of the side wall portion (14) at a position of a maximum width cw of the main body portion (16a) in the tire width direction.. . ... Bridgestone Corporation

06/09/16 / #20160159148

Tire

The end of the folded-back ply in the tread width direction of the tire (1) extends beyond the tire maximum width, and the height of the bead filler is 30% or less than the tire sectional height. The maximum thickness of the reinforcing rubber layer is less than the maximum thickness of the bead filler. ... Bridgestone Corporation

06/09/16 / #20160158609

Golf club head

A golf club head having a face part, a sole part, a side part, a crown part and a hosel part, all of which surround a hollow part comprises a penetration hole that is provided on the crown part, penetrating the crown part so that the hollow part is connected with an outer atmosphere of the golf club head and a non-metal cover that is provided over the penetration hole. A recess part, which forms a recess, is provided on a surface of the non-metal cover.. ... Bridgestone Corporation

06/02/16 / #20160152873

Sheet for forming laminate, and method for producing laminate

. . The present invention provides a sheet for forming a laminate, mainly composed of eva, wherein the sheet allows a sufficient removal of air bubbles in a laminate to be performed by a step of pressurizing the laminate by using nip rolls, and allows a satisfactory laminate to be produced, and provides a method for producing the laminate.. . ... Bridgestone Corporation

06/02/16 / #20160152804

Anti-vibration rubber composition and anti-vibration rubber

Provided is a rubber composition for producing an anti-vibration rubber which is good in both damping properties and durability. An anti-vibration rubber composition including: a rubber component including a natural rubber, and antioxidants, wherein the composition includes a compound having a carbon-carbon double bond at a terminal and a carbonyl group at an α position thereof and an imidazole antioxidant as the antioxidants.. ... Bridgestone Corporation

06/02/16 / #20160152756

Processes for preparing aminosilane functionalized polymers

Disclosed herein are 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

06/02/16 / #20160152093

Aircraft tire

In order to suppress an excessive increase in the temperature of a tread section, a tire includes: a first land portion that is formed to a tread section by providing plural circumferential direction grooves extending around a tire circumferential direction at a spacing in a tire width direction, and that includes plural first recesses provided around the tire circumferential direction of a wall face of the first land portion; and a second land portion that has a wider width than the first land portion, and that includes a greater number of second recesses than the number of the first recesses provided around the tire circumferential direction of a wall face of the second land portion.. . ... Bridgestone Corporation

06/02/16 / #20160152085

Pneumatic tire for heavy load

A pneumatic tire for heavy load including, on a tread surface thereof, land portions defined by a plurality of lug grooves each extending in the tread width direction while opening at one end thereof to the tread ground-contact end, in which: the tire has a negative ratio nc of 2% to 10% in a tread center side region; the lug groove has a depth da, the land portion has a width rw, and the land portion has an extending length l, so that the land portion center line has a length of 0.5 l or more in a segment where rw/da is 1.3 to 2.5; and the land portion center line has a length of 0.3 l or more in a segment having a tilt angle α of 60° or less relative to the tire equator direction.. . ... Bridgestone Corporation

06/02/16 / #20160152079

Tire

A tire (10) including: a circular tire frame (17) formed from a resin material, and a reinforcing metal cord member (27) that is wound on an outer circumference of the tire frame (17), at least a portion of the reinforcing metal cord member (27) being covered, via an adhesion layer including a hot melt adhesive, with a covering composition that includes at least one thermoplastic material selected from the group consisting of a thermoplastic resin and a thermoplastic elastomer.. . ... Bridgestone Corporation

06/02/16 / #20160152077

Pneumatic tire

A tire is provided with a tire frame member that is made from resin and includes: a bead portion; a side portion that is connected to an outer side of the bead portion in a tire radial direction and that has hole portions formed at intervals in a tire circumferential direction; and a crown portion that is connected to an inner side of the side portion in a tire width direction and that has a tread disposed thereon.. . ... Bridgestone Corporation

06/02/16 / #20160151679

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 formed thereon, the core is formed primarily of a base rubber, the envelope layer and the intermediate layer are formed primarily of synthetic resin materials, and the cover layer is formed primarily of a urethane material. The relationships between, respectively, the surface hardnesses of the envelope layer-encased sphere and the ball, the thicknesses of the intermediate layer and the cover layer, the deflections of the core and the ball, and the initial velocities of the core and various layer-encased spheres of the ball each satisfy specific conditions. ... Bridgestone Corporation

06/02/16 / #20160151677

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

05/26/16 / #20160146283

Anti-vibration structure

An anti-vibration structure 10 includes an inner elastic body that is a separate body to a multi-layered material and that is disposed in a through-hole piercing through a layering direction of the multi-layered material, and a restricting member that has at least a portion embedded in the inner elastic body, that has one end coupled to an upper plate and another end coupled a lower plate and that restricts separation of the upper plate and the lower plate.. . ... Bridgestone Corporation

05/26/16 / #20160145424

Rubber tyre compound production method

A method of producing rubber compounds, in which the polymer base is composed partly of a first polymer material having a glass transition temperature of over −50° c., and partly of a second polymer material having a glass transition temperature of below −50° c. And silica as a filler. ... Bridgestone Corporation

05/26/16 / #20160145418

Rubber tyre compound production method

A method of producing rubber compounds, in which the polymer base is composed partly of a first polymer material, which is either produced by emulsion polymerization or is natural rubber, and partly of a second polymer material produced by solution polymerization. The method includes a preliminary second polymer material treating step, in which the second polymer material, silica, a silane bonding agent, and at least one nucleophile agent are mixed with one another; a first mixing step, in which at least the first polymer material, silica, and a silane bonding agent are added to the compound resulting from the preliminary second polymer material treating step; and a second mixing step, in which stearic acid and a curing system are added to the compound being produced.. ... Bridgestone Corporation

05/26/16 / #20160144671

Pneumatic tire

Plural inner face grooves 40 are formed to tire inner faces of a tire frame member 17 formed from a resin material. The inner face grooves 40 are formed to a region from an inner separation point corresponding to a separation point of a bead portion 12 from a rim 20 as far as an inner end portion 30 in corresponding to a tread end 30a of a tread member 30.. ... Bridgestone Corporation

05/26/16 / #20160144670

Run-flat tire

A tire includes: bead cores; a carcass; a bead filler that extends along an outer face of the carcass from the bead core toward a tire radial direction outer side; and side reinforcing rubber that is provided at a tire side portion that extends in the tire radial direction along an inner face of the carcass, that decreases in thickness on progression toward the bead core side and toward a tread portion side, that has an end portion at the bead core side that overlaps with bead filler with the carcass sandwiched therebetween, and that has an elongation at break of 130% or above, wherein a thickness of the side reinforcing rubber at a midpoint between an end portion at the tire radial direction outer side of the bead filler running along the carcass, and the end portion is 40% to 80% of a maximum thickness.. . ... Bridgestone Corporation

05/26/16 / #20160144667

Pneumatic tire

A pneumatic tire, having in a ground contact surface of a tread a plurality of main grooves extending in the tread circumferential direction and a plurality of land portions demarcated by the main grooves and tread ends, wherein, provided that two land portions adjacent to the central land portion on the respective sides in the tread width direction of the central land portion each represent an adjacent land portion, rigidity in the tread circumferential direction of the central land portion is lower than rigidity in the tread circumferential direction of the adjacent land portion.. . ... Bridgestone Corporation

05/19/16 / #20160137513

Silicon carbide powder

The present invention is a silicon carbide powder which is suitable for producing a high-strength silicon carbide sintered body, wherein: the molar ratio between carbon and silicon in a mixture containing a silicon source, a carbon source, and a catalyst is 2.5 or more; and the average particle diameter is 10 μm or more and 25 μm or less.. . ... Bridgestone Corporation

05/19/16 / #20160137512

Silicon carbide powder

The present invention is a silicon carbide powder with which it is possible to obtain favorable results in terms of the reaction performance of carbon and silicon, the amount of free carbon (fc), and the yield of the silicon carbide powder. In a mixture containing a silicon source, a carbon source, and a catalyst, the silicon source is methyl silicate; and when the mixture is 100 weight %, the weight % of the carbon source is 33 weight % or more and 39 weight % or less, the weight % of silicon source is 55 weight % or more and 62 weight % or less, and the weight % of the catalyst is 3 weight % or more and 10 weight % or less.. ... Bridgestone Corporation

05/19/16 / #20160137006

Tire

A tire includes a plurality of land portions defined by a plurality of circumferential grooves, and each of the plurality of land portions has a plurality of lateral grooves crossing the land portion. Each of the plurality of lateral grooves is made up of a center region extending at an angle of inclination relative to a tread width direction and side regions extending at a smaller angle of inclination relative to the tread width direction than the center region, the side regions increasing in groove width toward the respective circumferential grooves. ... Bridgestone Corporation

05/19/16 / #20160137000

Tire

A tire includes: a ring shaped tire frame member that is made of a resin with plural tire pieces joined along a tire circumferential direction; a joint portion reinforcing belt that is adhered to the tire frame member, that extends around the tire circumferential direction, and that covers a joint portion of the plural tire pieces; and a tread layer that is provided further to the tire radial direction outside than the tire frame member and the joint portion reinforcing belt.. . ... Bridgestone Corporation

05/12/16 / #20160131554

Tire performance testing apparatus

A tire performance testing apparatus capable of reproducing conditions in which tire runs on actual road having a pothole, that is, conditions in which tire hits projection after moving in the air. The tire performance testing apparatus includes a tire running surface, a projection installing surface disposed on the front side of the end of the tire running surface in the traveling direction of a vehicle traveling on the tire running surface and positioned lower than the end of the tire running surface, and a projection disposed on the projection installing surface in such a manner as to protrude upward from the projection installing surface. ... Bridgestone Corporation

05/12/16 / #20160131219

Anti-vibration apparatus

An anti-vibration apparatus (10) includes a first attachment member (11) having a tubular shape and connected to one of a vibration generating section and a vibration receiving section and a second attachment member (12) connected to the other section, an elastic body (13) configured to connect the attachment members to each other, and a partition member (16) configured to partition a liquid chamber in the first attachment member (11) in which a liquid is sealed into a first liquid chamber (14) and a second liquid chamber (15). At least one of the first liquid chamber (14) and the second liquid chamber (15) has the elastic body (13) at a portion of a wall surface. ... Bridgestone Corporation

05/12/16 / #20160130429

Hose rubber composition and hose

A hose rubber composition and hose having improved crack resistance while ensuring flame retardance are provided. The hose rubber composition includes: a rubber component including 70 parts by mass or more chloroprene rubber in 100 parts by mass the rubber component; and 45 parts to 65 parts by mass carbon black with respect to 100 parts by mass the rubber component, wherein the carbon black has an iodine adsorption number of 20 mg/g to 100 mg/g, and a dbp oil absorption number of 50 ml/100 g to 150 ml/100 g.. ... Bridgestone Corporation

05/12/16 / #20160130423

Silica shielding agents and related methods

Disclosed herein are rubber compositions comprising at least one conjugated diene polymer or copolymer, silica filler, and a silica shielding agent of formula (i), and related methods such as for improving silica dispersability in silica-filled rubber compositions. Also disclosed herein are tire components, such as tire treads containing the rubber compositions disclosed herein.. ... Bridgestone Corporation

05/12/16 / #20160130417

Rubber composition

Provide is a rubber composition which is improved in rolling resistance and abrasion resistance at the same time without reducing a wet grip performance, and the rubber composition is prepared by compounding 100 parts by mass of a rubber component containing 30% by mass or more of polyisoprene with 2 to 200 parts by mass of carbon black having a hydrogen release rate of 0.2% by mass or more and/or a ratio of a nitrogen adsorption specific surface area n2sa and a cetyltrimethylammonium bromide adsorption specific surface area ctab, n2sa/ctab, of 1.2 to 1.5 and a nitrogen adsorption specific surface area n2sa of 160 to 300 m2/g.. . ... Bridgestone Corporation

05/12/16 / #20160129730

Tire having a split body ply construction

A pneumatic tire which has a cut-out zone in a carcass portion, wherein the cut-out zone is oriented radially inwardly from at least one belt and laterally inwardly of the belt edges, and wherein the cut-out zone is void of any reinforcement materials.. . ... Bridgestone Corporation

05/05/16 / #20160122944

Steel cord-rubber composite

. . Provide are a rubber composition which is excellent in an initial adhesive property and a hygrothermal adhesive property with metals, a rubber-metal composite suited to rubber articles such as tires for automobiles, industrial belts and the like to which a strength is required, and a production method for the same. The metal cord-rubber composite of the present invention is prepared by coating a metal cord with a rubber composition, wherein an n atom on a surface of the metal cord accounts for 2 atomic % or more and 60 atomic % or less, and a cu/zn ratio is 1 or more and 4 or less.. ... Bridgestone Corporation

05/05/16 / #20160122519

Rubber composition, conveyor belt rubber composition, conveyor belt, and belt conveyor device

A rubber composition that can improve the productivity of a conveyor belt, belt conveyor device, or the like without impairing its energy saving performance and a conveyor belt and belt conveyor device that have both high productivity and high energy saving performance are provided. The rubber composition includes a diene polymer, a citraconimide compound, a hydrazone compound, and a vulcanization accelerator.. ... Bridgestone Corporation

05/05/16 / #20160121664

Run-flat tire

A run-flat tire ensures run-flat durability with a reduced weight. A tire radial outermost carcass ply of two or more carcass plies has tire widthwise inner ends in a crown portion. ... Bridgestone Corporation

05/05/16 / #20160121662

Run flat tire

We provide a run flat tire capable of ensuring high resistance to coming off of a bead portion from a rim in run flat running, while maintaining high durability of a side-reinforcing rubber. Specifically, a run flat tire, has a tread portion, a pair of sidewall portions continuous with respective sides of the tread portion, bead portions continuous with the respective sidewall portions, bead cores each embedded in the corresponding bead portion, and a side-reinforcing rubber having a crescent-shaped cross section and provided in each sidewall portion, wherein in a cross section in the tire width direction thereof: diameter of an annular inner end in the tire radial direction of the bead core is larger by 3.0-4.5 mm than rim diameter of a prescribed rim; and diameter of a circle collectively formed by the bead heal point is smaller by 1.7-2.9 mm than the rim diameter of the prescribed rim.. ... Bridgestone Corporation

05/05/16 / #20160121661

Tire

A tire 10 has a decoration portion 15 using a paint on a surface of a side portion 12. The decoration portion 15 has a white paint layer 16 formed on at least a part of the decoration portion 15, a color paint layer 17 disposed by laminating on the white paint layer 16 and having a thickness less than the thickness of the white paint layer 16, and a protective layer 18 disposed by laminating on the color paint layer 17 and having the thickness less than the thickness of the white paint layer 16. ... Bridgestone Corporation

05/05/16 / #20160121660

Tire and tire print method

A tire 10 includes a decorative portion 15 formed by using paint on a surface of a side portion 12. The decorative portion 15 includes a white-paint layer 16 and a color-paint layer 17. ... Bridgestone Corporation

04/28/16 / #20160115296

Tire rubber composition and manufacturing method therefor

The present invention provides a tire rubber composition prepared by mixing at least one rubber component selected from natural rubbers and synthetic diene rubbers (a), a filler including an inorganic filler (b), a silane coupling agent (c) and a thiosemicarbazone derivative (d), and provides a production method for a tire rubber composition, wherein the tire rubber composition is kneaded in plural stages, and in the first stage of kneading, the rubber component (a), all or part of the inorganic filler (b), all or part of the silane coupling agent (c), and the thiosemicarbazone derivative (d) are kneaded, therefore providing a tire rubber composition having improved reactivity between the coupling agent and the rubber component and excellent in low-heat-generation property and a production method for the composition.. . ... Bridgestone Corporation

04/28/16 / #20160114630

Pneumatic tire

A pneumatic tire includes: a plurality of land portions; and in at least one land portion of the plurality of land portions, a sipe extending in the tread width direction, of which ends open at the circumferential grooves or the tread ends. The sipe has at least one bent portion extending continuously in the extending direction of the sipe from one of the end regions of the sipe to the other end region in the depth direction of the sipe. ... Bridgestone Corporation

04/28/16 / #20160114629

Tire

This tire (1) has, in a tread part (2), a plurality of land parts (70a)-(70c) sectioned by circumferential direction grooves (50) extending in the tire circumferential direction (l) and width direction grooves (60) extending in the tire width direction (w). The tire (1) is configured so that the length (w2) of the tread part (2) in the tire width direction (w) is 60 to 95% of the length (w1) of the tire (1) in the tire width direction (w). ... Bridgestone Corporation

04/28/16 / #20160113405

Polyurethane foam for seat pad

A polyurethane foam for a seat pad that simultaneously achieves higher levels of shakiness-reducing properties and stress relaxation-reducing properties, thus providing good ride comfort, and is excellent in durability, and a seat pad using the polyurethane foam are provided. Specifically, the polyurethane foam for a seat pad is formed by foam-molding a foaming liquid containing (a) a polyol component, (b) a polyisocyanate component, and (c) a crosslinking agent.. ... Bridgestone Corporation

03/31/16 / #20160089806

Method and apparatus for measuring protrusion length of protrusion portion

Method and apparatus for measuring a protrusion length of a protrusion portion on each side of sheet after cutting even when there is variation in positions of cords embedded in the sheet, apparatus with imaging unit that images cross-sectional profile in width direction of sheet including protrusion portions, and generates waveform data from imaging of cross-sectional profile, detect maximum height-positions of crests and of troughs of waveform data, set, based on waveform data, a maximum height-position of crest closest to width end of sheet as maximum height-position of end crest, set a position corresponding to an edge of protrusion portion of sheet, located on more width end side than maximum height-position of end crest, as minimum height-position of a terminal trough, detect distance in width direction of sheet between maximum height-position of end crest and of the terminal trough, and measure protrusion length of protrusion portion based on detected distance.. . ... Bridgestone Corporation

03/24/16 / #20160087130

Composition for solar cell sealing film, method for producing same and solar cell sealing film

The present invention provides a composition for a solar cell sealing film prepared by mixing an ethylene-α-olefin copolymer (m-lldpe) polymerized using a metallocene catalyst and other polymers as resin components, wherein the composition has the same processability as a composition containing m-lldpe alone and provides a solar cell sealing film having the same transparency as the case where m-lldpe is used alone. A composition for a solar cell sealing film comprising m-lldpe and low-density polyethylene (ldpe), wherein the weight average molecular weight of m-lldpe (mw(m-lldpe)) is 200,000 or less, the weight average molecular weight of ldpe (mw(ldpe)) is 250,000 or less, and the mass ratio of m-lldpe to ldpe (m-lldpe:ldpe) is in a range of 80:20 to 30:70, and a solar cell sealing film prepared using the same.. ... Bridgestone Corporation

03/24/16 / #20160086320

Inspection apparatus

An inspection apparatus capable of preventing a conforming article from being judged as nonconforming when inspecting a molded object for acceptability by performing image processing on an image captured of the inspection object. The apparatus includes a means for positioning a model pattern in a position with a highest degree of agreement by matching the model pattern against the image captured of the inspection object, a model pattern dividing means for dividing the model pattern into a plurality of elements in such a manner as to have mutually overlapping regions, and a shape recognition means for recognizing a shape corresponding to the model pattern by positioning each of the elements divided by the model pattern dividing means in a position with a highest degree of agreement by performing pattern matching within a predetermined range with reference to the position where the model pattern has been positioned on the image.. ... Bridgestone Corporation

03/24/16 / #20160081265

Guayule harvester and related processes

Disclosed herein is a harvester for harvesting guayule shrubs from the soil in which they are grown. The harvester can include a wheeled frame, a pair of laterally spaced sidewalls on the frame, a front conveyor positioned between the pair of laterally spaced sidewalls, a forward projecting digger blade positioned forward of the front conveyor, and an agitator for separating residual soil from uprooted guayule shrubs. ... Bridgestone Corporation

03/17/16 / #20160076974

Tire measuring tool and tire measuring method

. . A tire measuring tool (1) is provided with a piercing member (11) that pierces the surface of a tire; and a measuring terminal (12) built in the piercing member (11). The measuring tool (1) is used after the measuring terminal (12) is connected to a main measuring tool body that receives output signals from the measuring terminal (12). ... Bridgestone Corporation

03/17/16 / #20160075206

Systems and methods for automated air suspension pressure drop

Various systems and methods for automated air suspension pressure drop are disclosed. In one embodiment, a method for decreasing air pressure in an air spring is provided, comprising: providing a trailer, the trailer comprising: a first axle and a second axle, wherein at least one of the first axle and the second axle is operatively connected to at least one air spring; providing a strain gauge operatively connected to the trailer, wherein the strain gauge is configured to identify a lateral bending strain in the trailer; identifying the presence of the lateral bending strain in the trailer, wherein the lateral bending strain is about an axis substantially normal to the trailer's plane of travel; communicating the presence of the lateral bending strain in the trailer to a control unit operatively connected to the at least one air spring; and decreasing the air pressure in the at least one air spring.. ... Bridgestone Corporation

03/17/16 / #20160075187

Tire for two-wheeled motor vehicle

A tire center slant groove near tread surface tire equatorial plane extends toward reverse rotation-direction of designated rotation-direction while slanting from a tire equatorial plane side to a tire-width direction outer side, an extension direction angle forms with respect to a tire circumference-direction within range, 3°-10°; and at center slant groove-end portion in reverse rotation-direction, at least a tire-width direction outer side groove-edge of the center slant groove forms into a circular-arc-shaped portion to have the tire-width direction outer side groove-edge angle formed with respect to tire circumference-direction, the angle increasing toward reverse rotation-direction, the tire-width direction outer side groove-edge angle of the center slant groove forms with respect to tire circumference-direction larger than an angle of a tire-width direction inner side groove-edge of the center slant groove forms with respect to tire circumference-direction, and the center slant groove depth gradually decreases toward the center slant groove-edge in reverse rotation-direction.. . ... Bridgestone Corporation

03/17/16 / #20160075185

Pneumatic tire

This disclosure aims to provide a pneumatic tire having improved noise reduction performance exhibited by a resonator. The pneumatic tire according to this disclosure has at least two circumferential grooves extending continuously on a tread surface, and has a resonator disposed on a land portion partitioned by two circumferential grooves among the circumferential grooves, the resonator having an air chamber opening toward a land portion surface at a position spaced from the circumferential grooves, one a more one-side narrow necks connecting the air chamber to one circumferential groove of the two circumferential grooves, and one or more other-side narrow necks connecting the air chamber to the other circumferential groove, the one-side narrow neck and the other-side narrow neck having cross section areas approximately identical to each other, and an extending length of the one-side narrow neck and an extending length of the other-side narrow neck being different.. ... Bridgestone Corporation

03/17/16 / #20160075184

Pneumatic tire

A pneumatic tire includes, in an inner land (4) portion, a first resonator (9) made up of a first sub-groove (9a), a first branch groove (9b) opening to one of two inner circumferential main grooves (2), and a first branch groove (9c) opening to the other one of the two inner circumferential main grooves (2), and also includes, in an external land portion (5), a second resonator (11) made up of a second sub-groove (11a) and a second branch groove (11b) that is opening to one of two external circumferential main grooves (3) and a third resonator (12) made up of a third sub-groove (12a) and a third branch groove (12b) that is opening to the other one of the two external circumferential main grooves (3). The second resonator (11) and the third resonator (12) have groove widths smaller than the groove width of the first resonator (9).. ... Bridgestone Corporation

03/17/16 / #20160075183

Pneumatic tire

An object is to make it possible to control fluctuations in wear of a tread. A pneumatic tire (10) has: an outer layer (36) that structures rubber of a tread (18); an inner layer (38) that is layered at a tire radial direction inner side of the outer layer (36), that structures rubber of the tread (18), and that has a different wear characteristic from the outer layer (36); and a boundary surface (40) that structures a border of the outer layer (36) and the inner layer (38), and that, in a tire radial direction cross-section seen from a tire axial direction, has wave shapes having an amplitude in a tire radial direction.. ... Bridgestone Corporation

03/17/16 / #20160075182

Tire

A tire (10) including: a circular tire frame (17) formed from a resin material; and a reinforcing metal cord member (27) that is wound on an outer circumference of the tire frame (17), at least a portion of the reinforcing metal cord member (27) being covered, via an adhesion layer including a solvent-based adhesive, with a covering composition that includes at least one thermoplastic material selected from the group consisting of a thermoplastic resin and a thermoplastic elastomer.. . ... Bridgestone Corporation

03/17/16 / #20160075181

Aircraft tire

In order to suppress the dimensions and mass of an aircraft tire from becoming uneven around the tire circumferential direction, an aircraft tire includes: a belt layer provided further to a tire radial direction outside than a carcass; and a sheet shaped belt protection member that is wound around a tire circumferential direction tc between a tread section and the belt layer, and that includes incision portions incised along a tire width direction tw, with the incision portions formed at uniform intervals around the tire circumferential direction tc.. . ... Bridgestone Corporation

03/17/16 / #20160075180

Tire and tire manufacturing method

A tire including: a tire case serving as an example of a circular tire frame member formed from a frame resin material; and a reinforcing cord member that is disposed at an outer circumference of the tire case, that is wound along a tire circumferential direction so as to form a spiral shape, and that is bonded to the tire case, wherein cord end portions serving as length direction end portions are embedded in the tire case so as to be disposed further to a side of an inner circumferential surface of the tire case than a cord intermediate portion serving as a length direction intermediate portion.. . ... Bridgestone Corporation

03/17/16 / #20160075055

Method for manufacturing mold for molding tire and mold for molding tire

A vent hole of a mold for molding a tire is formed by suppressing bending deformation of a wire in a casting mold. By using a relational expression among a length of a wire in a casting space, a diameter of the wire, a contact angle of the wire with respect to a molten metal, and a bent amount of the wire by casting acquired by experiments, the contact angle of the wire at which the bent amount of the wire is within an allowable range is calculated from conditions of an actual length and the diameter of the wire. ... Bridgestone Corporation

03/17/16 / #20160074982

Passive buffer brush air cooling

In one embodiment, the present invention provides a buffer brush. When rotating, the buffer brush acts as a centrifugal pump. ... Bridgestone Corporation

03/17/16 / #20160074710

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

03/10/16 / #20160068030

Pneumatic tire

. . . . . . A pneumatic tire, having short fibers fixedly attached to at least a portion of an inner surface thereof, wherein: provided that the average cross sectional area of a cross section, not in contact with the inner surface of the tire, of one short fiber is “a” (mm2/the number of short fibers) and the number of the short fibers fixedly attached in a unit area (1 mm2), of a region where the short fibers have been fixedly attached, in the inner surface of the tire is “n” (the number of short fibers/mm2), a value of a×n is in the range of 0.02 to 0.06.. . ... Bridgestone Corporation

03/10/16 / #20160068028

Tire and tire manufacturing method

A tire is provided suppressing air incorporation and raising durability without a detrimental effect on running performance. The tire 10 includes a ring shaped tire case 17 formed from a frame resin material, with a reinforcement layer 28 formed by winding and joining a covered cord member 26, formed by a cord resin material 27 covering a reinforcement cord 26a, on a crown section 16 portion of the tire case 17. ... Bridgestone Corporation

03/10/16 / #20160068025

Pneumatic radial tire for agricultural vehicle

This pneumatic radial tire for agricultural vehicles includes lugs arranged alternately, in the tread circumferential direction, in tread width direction halves, and at least one protrusion on a wall at a trailing edge side of each lug, protruding from the wall in an opposite direction from a designated tire rotation direction, connecting to the bottom of a lug groove, and including an upper face orthogonal to the tire radial direction. A line m connects a tread width direction innermost point p of the wall at the trailing edge side of a first lug and a point q ⅓ of a peripheral length of the wall away. ... Bridgestone Corporation

03/10/16 / #20160068021

Tire and tire manufacturing method

A tire includes: a tire case serving as an example of a circular tire frame member that is formed using a frame resin material; and a reinforcing cord member that is disposed at an outer circumference of the tire case, that is configured by a reinforcing cord covered with a resin covering layer, that is wound along a tire circumferential direction so as to form a spiral shape, that is bonded to the tire case, and in which tire axial direction adjacent portions of the reinforcing cord member are bonded together.. . ... Bridgestone Corporation

03/10/16 / #20160067934

Tire mold and tire

A tire mold and tire reduce manufacturing and facilities costs and improve appearance of a product tire. The tire mold includes a tread molding body that molds a tread surface of a tire and is formed by pieces aligned in a circumferential direction of the mold. ... Bridgestone Corporation

03/03/16 / #20160059635

Tire

. . . . A tire with a tread to which foamed rubber is applied that stably exhibits excellent on-ice performance, which is a combination of braking performance and driving performance of a tire, on the ice road surface from the beginning of its use is provided. The tire includes, in a tread thereof, a surface rubber layer forming at least a ground contact surface of the tread and an inner rubber layer that is adjacent to the inward of the surface rubber layer in the tire radial direction and is formed of foamed rubber, and the elastic modulus of rubber of the surface rubber layer ms is lower than the elastic modulus of rubber of the inner rubber layer mi.. ... Bridgestone Corporation

03/03/16 / #20160059631

Pneumatic tire

A pneumatic tire including: on a tread of the tire, inclined belt layer and circumferential belt layer; and on the tread surface, a plurality of circumferential grooves extending in the tread circumferential direction, and shoulder land portions partitioned between the circumferential grooves located outermost in the tire width direction and tread ground contact ends. Positions of the tread surface that correspond to the outermost ends of the circumferential belt layer in the tire width direction are within the shoulder land portions, and the distance in the tire width direction between the outermost ends in the tire width direction of the circumferential belt layer and tire equator side ends of the shoulder land portions is 12% or more and 22% or less of a half of the width of the circumferential belt layer in tire width direction.. ... Bridgestone Corporation

02/25/16 / #20160053846

Vibration isolator

A vibration isolator includes a partition member (15) that partitions a liquid chamber (16) in a first mounting member (11) into a primary liquid chamber (16a) using an elastic body (13) as a part of a wall surface thereof and a secondary liquid chamber (16b), and a movable member (23) housed in a housing chamber (20) provided within the partition member (15), the movable member being free to be deformed or displaced in an axial direction of the first mounting member (11). The partition member (15) is provided with a plurality of communicating holes (22) that extend from a portion of the partition member (15) which is exposed to the primary or secondary liquid chamber (16a or 16b) toward the inside of the partition member and are open toward the movable member (23). ... Bridgestone Corporation

02/25/16 / #20160053845

Vibration isolator

A vibration isolator (10) is a liquid-enclosed vibration isolator and includes: a tubular first mounting member (11) connected to one of a vibration generator and a vibration absorber, and a second mounting member (12) connected to the other; an elastic body (13) elastically connecting the mounting members; and a partition member (16) partitioning a liquid chamber (19) in the first mounting member (11) within which a liquid (l) is enclosed into a primary liquid chamber (14) that uses the elastic body (13) as a part of a wall surface thereof and a secondary liquid chamber (15), wherein the partition member (16) is formed with a restriction passage (24) communicating the primary and secondary liquid chambers (14, 15) with each other, and a porous body (28) having numerous pores (31), which are disposed in parallel so as to communicate a side of the primary liquid chamber (14) and a side of the secondary liquid chamber (15) with each other, is arranged in the restriction passage (24).. . ... Bridgestone Corporation

02/25/16 / #20160053844

Vibration isolator

A vibration isolator includes: a first mounting member (11) and a second mounting member (12); an elastic body (13) connecting the mounting members; a partition member (15) partitioning a liquid chamber (16) in the first mounting member (11) into a primary liquid chamber (16a) using the elastic body (13) as a part of a wall surface thereof and a secondary liquid chamber (16b); and a movable member (23) housed in a housing chamber (20) provided within the partition member (15), the movable member being free to be deformed or displaced in an axial direction of the first mounting member (11). The partition member (15) is provided with a plurality of communicating holes (22) that extend from a portion of the partition member (15) which is exposed to the primary liquid chamber (16a) or the secondary liquid chamber (16b) toward an inside of the partition member and are opened toward the movable member (23). ... Bridgestone Corporation

02/25/16 / #20160053098

Rubber composition and tire using the same

Provide are a rubber composition for tire which is excellent in a wet grip performance and abrasion resistance and which has small rolling resistance and a low fuel consumption, and a tire prepared by using the above rubber composition. The rubber composition is prepared by compounding 100 parts by mass of a rubber component comprising a styrene-butadiene rubber or a styrene-butadiene rubber and a butadiene rubber with 2 to 200 parts by mass of carbon black as a reinforcing filler, wherein the carbon black has at least a hydrogen release rate of 0.2% by mass or more and/or a ratio n2sa/ctab of 1.2 to 1.5 in which n2sa is a nitrogen adsorption specific surface area and ctab is a cetyltributylammonium bromide adsorption specific surface area, and has a n2sa of 160 to 300 m2/g.. ... Bridgestone Corporation

02/18/16 / #20160046764

Tire

A tire includes a circular tire frame formed of a resin material, the resin material including a polyamide-based thermoplastic elastomer having a weight average molecular weight of from 15,700 to 75,000.. . ... Bridgestone Corporation

02/18/16 / #20160046152

Tire

A tire which has a circular tire frame formed of a resin material, and a reinforcing metallic cord member wound around an outer circumferential portion of the tire frame, in which the resin material comprises a polyamide-based thermoplastic elastomer including a soft segment and a hard segment including a structural unit represented by —[co—(ch2)m—nh]— (wherein m represents an integer of 6 to 11) in a molecule.. . ... Bridgestone Corporation

02/11/16 / #20160040024

Rubber composition suitable for use as a cap ply in a tire

. . Disclosed is a rubber composition suitable for use as a cap ply rubber composition. The rubber composition comprises: (a) at least one natural or synthetic rubbery polymer; (b) from 0.1 to 20 phr of at least one hydrazide compound; (c) from 0.1 to 10 phr of at least one methylene donor; (d) from 0.1 to 10 phr of at least one methylene acceptor resin; and (e) from 0.1 to 10 phr of zinc oxide is disclosed. ... Bridgestone Corporation

02/11/16 / #20160039973

Tire

A tire which has a circular tire frame formed of a resin material, and the resin material includes a polyamide-based thermoplastic elastomer including a soft segment and a hard segment having a crystallinity of from 14% to 26% in a molecule thereof.. . ... Bridgestone Corporation

02/11/16 / #20160039958

Polymers functionalized with heterocyclic imines

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 heterocyclic group and a hydrocarbyloxy-substituted or silyloxy-substituted aryl group.. . ... Bridgestone Corporation

02/11/16 / #20160039257

Tire with tire tag

A pneumatic tire includes a tire body having a crown portion and a pair of sidewalls. At least one reinforcing belt is disposed in the crown portion of the tire. ... Bridgestone Corporation

02/11/16 / #20160039247

Light-weight inner tube and related methods

The present disclosure relates to a light-weight tire inner tube comprising a film tube with a wall thickness of 100 to 400 microns, pneumatic tires containing the light-weight tire inner tube, and related methods for manufacturing the light-weight tire inner tube. The film tube is comprised of a film material comprising at least one thermoplastic engineering resin and optionally at least one saturated elastomer, and the film material of the film tube has an oxygen permeability of 8-15 cm3 o2/m2·per day at 25° c.. ... Bridgestone Corporation

02/04/16 / #20160033000

Vibrationproof device

A vibrationproof device which is a liquid sealed vibrationproof device includes a tubular first mounting member (3) that is connected to either one of a vibration generating portion and a vibration receiving portion, a second mounting member (4) that is connected to other one, an elastic body (5) that elastically connects the first mounting member (3) and the second mounting member (4), and a partition member (8) that partitions a liquid chamber (7) of the inside of the first mounting member (3) into a main liquid chamber (7a) of an upper side having the elastic body as a portion of a wall surface and an auxiliary liquid chamber (7b) of a lower side, and a restricting passage (80) which communicates with the main liquid chamber (7a) and the auxiliary liquid chamber (7b). In addition, a first liquid (l1) is contained as a main liquid and a second liquid (l2) which is insoluble in the first liquid (l1) is contained as an added liquid in the sealed liquid (l), and the vapor pressure of the second liquid (l2) is higher than the vapor pressure of a main component of the first liquid (l1) in the same temperature and a specific gravity of the second liquid (l2) is lighter than a specific gravity of the first liquid (l1).. ... Bridgestone Corporation

02/04/16 / #20160032086

Rubber composition, method for manufacturing same, vulcanized rubber, and tire

Provided are a rubber composition provided with excellent reinforcement properties by improving the dispersibility of fibers in a rubber component when the fibers are added to the rubber, a method for manufacturing the same, a vulcanized rubber, and a tire. A rubber composition comprising a rubber component and short fibers, wherein the short fibers are cationized. ... Bridgestone Corporation

02/04/16 / #20160032030

Polymers functionalized with nitroso compounds

A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomer with a coordination catalyst to form a reactive polymer; and (ii) reacting the reactive polymer with a nitroso compound.. . ... Bridgestone Corporation

02/04/16 / #20160031172

Method and apparatus for correcting shape of green tire

Apparatus and method for correcting the shape of a green tire configured so that, even if a side wall portion (s) is subjected to local crushing deformation during its temporary storage, such deformation is effectively corrected to easily improve the tire uniformity. A pressurized fluid is applied to an inner chamber of a green tire (g) having bead portions (b) held coaxially by upper and lower holders (56, 89), for setting the tread portion (t) of the green tire (g) coaxially to the bead portions (b). ... Bridgestone Corporation

01/28/16 / #20160025182

Liquid-sealed anti-vibration device and method for manufacturing the same

. . . . A liquid-sealed anti-vibration device comprising: an inner tube (1), an outer tube (2); rubber bodies (3), (4) interconnecting the inner and outer tubes (1), (2) in a liquid-tight manner at two positions spaced in an axial direction; a partition wall disposed between the rubber bodies (3), (4) to divide a space between the inner and outer tubes into two parts in the axial direction, the partition wall having an annular rigid member (5a) and an elastic member (5b); liquid chambers (8), (9) configured in such a way that the spaces partitioned by the partition wall (5) are filled with non-compressible liquid; and a limiting passage (7) provided in the partition wall (5) to allow the liquid chambers (8), (9) to communicate with each other, wherein the annular rigid member (5a), protrudes from the inner tube (1) toward the outer tube, the elastic member (5b) connects the annular rigid member (5a) to the outer tube (2), and the limiting passage (7) is formed by at least one passage groove (5c), the passage groove being formed on the outer circumferential surface of the annular rigid member (5a) and extending at least one time around the annular rigid member, and by a circumscribed rigid tube member (6) fixed to the elastic member (5b) so as to close opening of the passage groove (5c) via a seal member (5d) in a liquid-tight manner.. . ... Bridgestone Corporation

01/28/16 / #20160023520

Pneumatic tire

A pneumatic tire includes a narrow groove on a tread surface, inclined from the tire circumferential direction, groove width being smaller than groove depth, and an air inflow part opening to the tread surface and formed on one of the opposing groove walls. At least one end of the narrow groove is a terminal end. ... Bridgestone Corporation

01/28/16 / #20160023519

Pneumatic tire

A pneumatic tire can improve the heat dissipation effect in the tread portion while guaranteeing land portion rigidity and can also suppress degradation of the heat dissipation effect. The pneumatic tire includes a narrow groove (10) on a tread surface (1), extending at an inclination to the tire circumferential direction, the groove width (w1) being smaller than the groove depth (d1), an air inflow part (11) opening to the tread surface (1) and formed on at least one of the groove walls (10c) of the narrow groove (10) that face each other in the tire circumferential direction, and a wear prevention portion (12) formed by a protrusion or concavity on a groove wall (10c) that faces the other groove wall (10c) on which the air inflow part (11) is formed or on the tread surface (1) connecting to the groove wall (10c) that faces the other groove wall (10c).. ... Bridgestone Corporation

01/28/16 / #20160023518

Pneumatic tire

Provided is a pneumatic tire being improved in heat dissipation effect in the tread portion while being ensured in rigidity of the land portion. A narrow groove (9) is formed on a tread surface (1), the narrow groove extending in a direction inclined relative to the tire circumferential direction and having a groove width (w1) and a groove depth (d1), the groove width (w1) being smaller than the groove depth (d1). ... Bridgestone Corporation

01/28/16 / #20160023515

Tire

A tire includes a round tire frame made of a resin material, and the resin material includes a thermoplastic polyamide-based elastomer including an ester bond within a molecule thereof. The thermoplastic polyamide-based elastomer has a ratio by mass (hs/ss) of hard segment (hs) to soft segment (ss) of from 54/46 to 90/10.. ... Bridgestone Corporation

01/28/16 / #20160023415

Molding drum

Even when a radial length of a swing arm is increased, no gap is generated between adjacent segments, and tires of various sizes can be handled while roundness of a drum is maintained. An expandable molding drum has a plurality of segments constituting a circumferential surface, the molding drum having a plurality of swing arms having one end portion swingably connected to an outer circumferential surface of a cylindrical slider externally fitted with a drum shaft and having the other end portion swingably connected to the segment and expanding/contracting the segment along with movement of the slider in a drum shaft direction, and adjacent end portions of one end portions of the swing arms being swingably connected to the outer circumferential surface of the slider at intervals from each other in the drum shaft direction.. ... Bridgestone Corporation

01/28/16 / #20160023414

Sector mold, method for manufacturing same, and jig for processing pattern block

A pattern block can be easily attached to a sector with high positional accuracy, and furthermore, the strength thereof is enhanced. The present invention provides a sector mold constituted by attaching a pattern block to a sector, and the sector mold includes: the sector including an embedding groove and holes for positioning pins; and the pattern block including a convex portion for an embedding groove and positioning pins, on a back body surface, corresponding to the embedding groove and the holes for the positioning pins, respectively.. ... Bridgestone Corporation

01/21/16 / #20160018751

Roller, method for manufacturing same and image forming device using same

Provided are a roller capable of suppressing the generation of cutting waste from the cut surface of a foam layer at the end of the roller in the axial direction thereof, a method of manufacturing especially a conductive roller, and an image forming device using the roller. The roller is provided with a shaft 1, and a foam layer 2 and at least one film layer 3, sequentially provided on the outer periphery of the shaft. ... Bridgestone Corporation

01/21/16 / #20160017124

Rubber composition for tires and pneumatic tire

Provided is a rubber composition for a tire soft stiffener improved in a crack resistance and a low heat generation, wherein carbon black (a) contained in the rubber shows specific particle size distribution behavior in an aggregate mass distribution curve, and the composition contains at least one compound selected from carbon black coupling agents consisting of bismaleimide (b), alkylidene hydrazide (c), disulfane (d) and carboxylic hydrazide (e), and a heavy-duty tire produced by using the above rubber composition is further provide.. . ... Bridgestone Corporation

01/21/16 / #20160017121

Method for producing rubber composition, and rubber composition

We provide 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 hydrazide compound (c), the method comprising compounding in an optional preliminary compounding stage and a plurality of compounding stages, and adding the hydrazide compound (c) and kneading in the preliminary compounding stage and/or a first compounding stage, the hydrazide compound (c) being 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. We also provide a rubber composition produced with this method.. ... Bridgestone Corporation

01/21/16 / #20160016620

Rubber crawler and rubber crawler manufacturing method

A rubber crawler (10) includes: a rubber belt (12) serving as an example of an endless rubber body entrained around plural wheels; plural rubber projections (14) that are formed at the rubber belt (12) at intervals around a crawler peripheral direction of the rubber belt (12), that project toward an inner peripheral side of the rubber belt (12), and that limit movement of the wheels in a crawler width direction through contact; and at least one metal member (32) embedded in each rubber projection (14), the at least one metal member raising a rigidity of the rubber projection (14) in the crawler width direction, and including a portion that is exposed from the rubber projection (14).. . ... Bridgestone Corporation

01/21/16 / #20160016440

Tire

The carcass of this tire (1) has a carcass body and folded sections each folded around a bead core. A circumferential recessed section, which is recessed inward in the tire width direction and extends in the tire circumferential direction, is formed on the outer surface of the tire side section, and turbulence-generating protrusions are provided on the circumferential recessed section. ... Bridgestone Corporation

01/21/16 / #20160016439

Tire and tire manufacturing method

A tire (pneumatic tire 1) provided with regularly arranged concave portions (concave portions 80) dented toward a tire inner side direction from a tire surface (tire surface 50) in at least some areas on the tire surface wherein in a direction along with the tire surface, a maximum width l of the concave portion is in a range of 0.1 micrometer or more to less than 50 micrometers, a depth d reaching to a point of the innermost part of the concave portion toward the tire inner side direction from the tire surface is within a range of 0.1 micrometer or more to less than 10 micrometers, in the direction along with the tire surface, an arrangement interval p of the concave portions is within a range more largely than 0.1 micrometer to less than 100 micrometers.. . ... Bridgestone Corporation

01/21/16 / #20160016438

Pneumatic tire

Provided is a pneumatic tire being improved in heat dissipation effect in the tread portion while being ensured in rigidity of the land portion. A narrow groove (10) is formed on a tread surface (1), the narrow groove extending in a direction inclined with respect to the tire circumferential direction and having a groove width (w1) and a groove depth (d1), the groove width (w1) being smaller than the groove depth (d1). ... Bridgestone Corporation

01/21/16 / #20160016437

Tire

This tire improves high traction performance over an extended period of time and/or improves control performance while maintaining traction performance. This tire includes a tread with blocks formed thereon, protrusions (11, 21, 31) extending outward in the tire radial direction and formed on more than one of the blocks, and stepped portions (12, 22) and/or a second concavity (24) formed on a side of the protrusions (11, 21, 31).. ... Bridgestone Corporation

01/21/16 / #20160016436

Tire with tread pattern including sub-surface stiffness tuning and method

A tire has an axis of rotation and a tread pattern that includes a plurality of tread blocks having differing circumferential shear stiffness values. The tread pattern also includes a plurality of sub-surface features that are operatively associated with at least some of the tread blocks. ... Bridgestone Corporation

01/21/16 / #20160016434

Motorcycle pneumatic tire

A motorcycle pneumatic tire includes a belt, in a tire tread, including a circumferential belt layer formed by cords extending in the tread circumferential direction and covered by rubber and a width direction belt layer, provided outward in the tire radial direction from the circumferential belt layer, formed by cords extending in the tire width direction and covered by rubber; sections of cushion rubber, provided outward in the tire radial direction from the belt, separated in the tire width direction with the tire equatorial plane therebetween; and base rubber, provided in the area of separation between the sections of cushion rubber or outward in the tire radial direction from the area of separation, having a higher elastic modulus than the cushion rubber. Wn>wb, where wn is the length of the area of separation and wb is the length of the base rubber in a tire width direction cross-section.. ... Bridgestone Corporation

01/21/16 / #20160016371

Method for producing tire vulcanizing mold and tire vulcanizing mold

To provide a method for producing a tire vulcanizing mold capable of obtaining a tire vulcanizing mold having excellent durability and high precision at low cost and to provide such a tire vulcanizing mold, the method includes producing a tire vulcanizing mold by assembling a pattern molding segment, produced by rapid prototyping, on a metal base segment, the method further includes a step of producing the pattern molding segment from a metal based on a shape of a surface layer part including a pattern shaping surface in a basic model of the tire vulcanizing mold.. . ... Bridgestone Corporation

01/14/16 / #20160011541

Toner conveyance roller and method for manufacturing toner conveyance roller

. . . . . . A toner conveyance roller for an image forming apparatus including a toner image forming mechanism including a developing roller and the toner conveyance roller which is arranged opposite to the developing roller and used for supplying and scraping toner, wherein the toner conveyance roller has a roller part and a shaft part, the roller part includes a substantially cylindrical elastic layer composed of an elastic foaming body on a surface of the roller part, and a density of the elastic layer is higher in a longitudinal center part of the roller part than in both longitudinal end parts thereof, and a method for manufacturing the toner conveyance roller including a step of heat-pressing the crown-shaped elastic foaming body, and thereby, forming the elastic layer.. . ... Bridgestone Corporation

01/14/16 / #20160009906

Tyre body ply skim

A compound for a tyre textile body ply skim. The compound has a cross-linkable, unsaturated-chain polymer base, a reinforcing filler composite, and a curing system having at least a curing agent and accelerants. ... Bridgestone Corporation

01/14/16 / #20160009877

Method for manufacturing rubber composition, rubber composition, vulcanized rubber, and tire

Provided are a method for manufacturing a rubber composition, which method can give a rubber composition provided with excellent reinforcement properties by improving the dispersibility of fibers in a rubber component when the fibers are added to the rubber, a rubber composition obtained using this method, a vulcanized rubber, and a tire. The method is a method for manufacturing a rubber composition comprising short fibers, comprising a dispersion preparation step for preparing a short fiber dispersion by adding the short fibers into a liquid, a mixed dispersion preparation step for preparing a mixed dispersion by adding at least one dispersant selected from the group consisting of carbon black and inorganic compounds into the short fiber dispersion, a mixing step for mixing the mixed dispersion and rubber latex to prepare a rubber-short fiber mixed solution, and a drying step for drying the rubber-short fiber mixed solution to give a rubber composition.. ... Bridgestone Corporation

01/14/16 / #20160009842

Rubber composition, inner liner material, and pneumatic tire

Provided is a rubber composition having superior gas-barrier properties. More specifically, the rubber composition contains a layered compound and a modified conjugated diene-based polymer having a functional group that interacts with the layered compound.. ... Bridgestone Corporation

01/14/16 / #20160009144

Pneumatic tire

A pneumatic tire, having in a ground contact surface of a tread thereof at least one circumferential groove extending in the tire circumferential direction and a plurality of lateral grooves each opening to the corresponding circumferential groove and being wider than the circumferential groove, wherein: a recessed portion is formed in a circumferential groove wall, facing the corresponding lateral groove, of the circumferential groove; an aperture plane portion of the lateral groove at which the lateral groove opens to the circumferential groove at least partially faces an aperture plane portion of the recessed portion at which the recessed portion opens to the circumferential groove; and each lateral groove extends to be inclined with respect to the tire width direction at an inclination angle of at least 30°.. . ... Bridgestone Corporation

01/14/16 / #20160009143

Tire

To improve motion performance of a tire on a dry road surface and also improve drainage performance of a land so as to improve motion performance of the tire on a wet road surface. A tire (1) includes a land (20) formed on a tread portion (2). ... Bridgestone Corporation

01/14/16 / #20160009140

Heavy load pneumatic tire

In a heavy load pneumatic tire, a belt includes an intersecting belt layer formed by layering a pair of belt plies and an angled belt layer formed by at least one belt ply. 10°<θ1<25° and 15°<θ2−θ1<25°, where θ1 and θ2 are the angles of inclination of belt cords respectively in the belt intersecting belt layer and the angled belt layer. ... Bridgestone Corporation

01/14/16 / #20160009042

Tyre building method comprising winding an elastomer strip around a building drum

A tyre building method comprising: feeding an elastomer strip in a feed direction towards a building drum by means of a first and a second feed conveyor arranged in succession; cyclically determining the transverse position of both sides of the elastomer strip in a centring direction perpendicular to the feed direction; calculating an average head out of centre on a head portion of the elastomer strip; and moving the second feed conveyor transversely in the centring direction by an amount equal to the average head out of centre, before winding the elastomer strip around the building drum.. . ... Bridgestone Corporation

01/14/16 / #20160008678

Golf club head

A golf club head according to this invention is a wood type golf club head including a face portion, a crown portion, and a sole portion. A plurality of grooves are formed in the face portion. ... Bridgestone Corporation

01/14/16 / #20160008677

Golf club head

A golf club head according to this invention is a wood type golf club head including a face portion, a crown portion, and a sole portion. A plurality of grooves are formed in the face portion. ... Bridgestone Corporation

01/14/16 / #20160008667

Multi-piece solid golf ball

In a multi-piece solid golf ball having a core, an envelope layer, an intermediate layer and a cover, the surface hardnesses of the respective layers are set so as to satisfy specific relationships. Also, the initial velocities measured for the core, for a sphere obtained by forming the envelope layer over the core (envelope layer-encased sphere), for a sphere obtained by forming the envelope layer and the intermediate layer over the core (intermediate layer-encased sphere) and for the ball are set so as to satisfy specific relationships. ... Bridgestone Corporation

01/07/16 / #20160005901

Method for manufacturing solar cell module and solar cell module

. . . . Method for manufacturing a solar cell module in which a light-receiving side sealing film 13a and a backside sealing film 13b are each formed of a different resin composition from each other selected from a resin composition a and a resin composition b, both of the sealing films are heated when the pressurizing is initiated so as to reach to a minimum temperature x° c. And a maximum temperature y° c., the resin composition a has a viscosity of 5.0×104 pa·s or less at the temperature x° c., and the resin composition b has a viscosity of 7.0×104 pa·s or less at the temperature x° c. ... Bridgestone Corporation

01/07/16 / #20160001830

Crawler

A rubber crawler serving as an example of a crawler of the present invention includes: an endless belt shaped rubber belt; a main cord layer that is disposed within the rubber belt, that is configured by plural main cords extending along a crawler peripheral direction and arranged side-by-side in a crawler width direction, and that is formed with an overlapping portion where both end sides in the crawler peripheral direction overlap one another in a crawler thickness direction; and a stretching and contracting portion that is formed at the overlapping portion of the main cords, and is capable of stretching and contracting more in the crawler peripheral direction than other portions of the main cords, wherein the stretching and contracting portion includes a curved portion where the main cords are curved with an amplitude in the crawler width direction as viewed along the crawler thickness direction.. . ... Bridgestone Corporation

01/07/16 / #20160001608

Sidewall decoration on rim guard

Various embodiments of a tire having a rim guard are disclosed. The rim guard may be configured to have reduced deflection and/or strain relative to the remainder of the tire's sidewall. ... Bridgestone Corporation

01/07/16 / #20160001607

Tire, and tire manufacturing method

Tire frame step portions 18 are formed to a tire frame member 17. The tire frame step portions 18 are formed further toward the tire equatorial plane side than tire axial direction end portions 30a of a tread member 30. ... Bridgestone Corporation

01/07/16 / #20160001606

Tire and tire surface printing method

Provided is a tire and a tire surface printing method which are capable of reducing man-hours and cost required for application of printing on the tire surface. The tire and the tire surface printing method include, on an outer surface of at least one of side portions (3) thereof, a printed region (5) formed by printing. ... Bridgestone Corporation

01/07/16 / #20160001598

Tire

A tire, including a circular tire frame formed of a resin material, the resin material including a resin composition in which at least one thermoplastic resin selected from the group consisting of a polyamide-based thermoplastic resin, a polyester-based thermoplastic resin, and a polyolefin-based thermoplastic resin, and at least one elastomer selected from the group consisting of a diene-based rubber, a vinyl acetate copolymer, a polyurethane, an ethylene propylene rubber, and any modified product thereof have been dynamically crosslinked.. . ... Bridgestone Corporation

01/07/16 / #20160001512

Manufacturing method of finite conveyor belt, joining method of finite conveyor belt, manufacturing method of endless conveyor belt, and conveyor belt apparatus

A manufacturing method of a finite conveyor belt of the present invention includes a laminated body formation step of forming a laminated body (35) in which a core layer member (32) which includes a tensile body (14) is interposed between an unvulcanized top cover rubber member (33) and an unvulcanized bottom cover rubber member (34) in a belt thickness direction t, and a vulcanization step of vulcanizing the laminated body (35) by pressurizing in the belt thickness direction (t) and heating the laminated body to form a finite conveyor belt, and the laminated body formation step includes a member formation step of forming the top cover rubber member (33) by separately connecting both ends of an unvulcanized first cover rubber part (36) in a belt length direction (l) in which a detection object (15) is embedded with ends of an unvulcanized second cover rubber parts (37) in the belt length direction (l).. . ... Bridgestone Corporation








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