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Bridgestone Corporation patents (2015 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


12/31/15 / #20150379388

Golf ball incorporating ic chip

. . . . . . A golf ball includes an rfid tag provided with an ic chip and an antenna. A protective layer surrounds the outer periphery of the rfid tag. ... Bridgestone Corporation

12/31/15 / #20150376378

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 butyl-based rubber having a functional group that interacts with the layered compound.. ... Bridgestone Corporation

12/31/15 / #20150376351

Rubber article reinforcing steel wire and rubber article using same

Provided are a rubber article reinforcing steel wire that is superior in bending fatigue properties to the related art and has a flat cross-sectional shape, and a rubber article using the wire. In a rubber article reinforcing steel wire 10, a major diameter and a minor diameter are substantially perpendicular to each other. ... Bridgestone Corporation

12/31/15 / #20150376348

Rubber compositions including cellulose esters and inorganic oxides

A process for preparing a vulcanizable composition, the process comprising mixing a vulcanizable rubber, a chemically-treated inorganic oxide, and a cellulose ester to prepare an initial masterbatch, introducing a rubber curative to the masterbatch, and mixing the masterbatch and curative to form the vulcanizable composition.. . ... Bridgestone Corporation

12/31/15 / #20150375050

Golf ball and method of manufacture

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

12/24/15 / #20150372564

Mounting method of electromagnetic generator and tire with built-in electromagnetic generator

. . . . When an electromagnetic generator 10 having a pendulum structure is mounted on an interior surface of a tire 20, an equivalent pendulum length l of a pendulum 14 is adjusted such that an integral multiple of a period λ of the pendulum 14, which is determined by the equivalent pendulum length l of the electromagnetic generator 10, is not in agreement with both of an integral multiple of a circumferential length l of the tire 20 and a length s of a non-grounded part of the tire, which is obtained by subtracting a ground contact length c from the circumferential length l of the tire 20, whereby the power generation capacity of the electromagnetic generator mounted on the tire can be improved regardless of the type of the tire.. . ... Bridgestone Corporation

12/24/15 / #20150368452

Golf ball material and golf ball

A golf ball material includes (a) one, two or more resin ingredients selected from among olefin-unsaturated carboxylic acid random copolymers, olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester random copolymers, and metal ion neutralization products of these copolymers, (b) one two or more resin ingredients selected from among polyethylenes, ethylene-vinyl acetate copolymers and polyesters, and (c) the specific agent for compatibilizing components (a) and (b).. . ... Bridgestone Corporation

12/24/15 / #20150368451

Tyre innerliner compound

A tyre innerliner compound having a polymer base composed at least partly of butyl rubber and/or halobutyl rubber; a filler system; and a curing system. The filler system has 60 to 80 phr of a silicon-based lamellar mineral filler; and 8 to 30 phr of a carbon black mixture composed of a first carbon black with a nitrogen-absorption-measured surface area of 21 to 39 m2/g, and a second carbon black with a nitrogen-absorption-measured surface area of 70 to 120 m2/g.. ... Bridgestone Corporation

12/24/15 / #20150368445

Tyre high-stiffness compound

A structural tyre component compound having a cross-linkable, unsaturated-chain polymer base, a reinforcing filler, and curing agents. The compound is composed of a mixture of reinforcing resins, in turn composed of (a) a methylene acceptor resin combined with a methylene donor compound, and (b) a hydrazide-derived resin. ... Bridgestone Corporation

12/24/15 / #20150368419

Refresh agent

A coated rubber composition includes a rubber composition coated with a liquid refresh agent selected from the group consisting of one or more liquid terpenes, limonene, carvone, pinene, pine needle oil, citral, orange oil, c9-c15 aliphatics, c9-c15 cycloaliphatics, ethyl lactate, dipentene, 1,8-cineole, eucalyptol, citronellol, geraniol, citronellene, terpinen-4-ol, and combinations thereof. A method of application and a coated rubber composition are also disclosed.. ... Bridgestone Corporation

12/24/15 / #20150368388

Photocurable elastomer composition, seal material, gasket for hard disc drive, hard disc drive and apparatus

A photocurable elastomer composition comprising: (a) a liquid polymer having a number average molecular weight of 5,000 or more, and mainly containing —[ch2c(ch3)2]— units; (b) a (meth)acrylate monomer; and (c) a photo polymerization initiator, the mass ratio ((a):(b)) between the component (a) and the component (b) being 10:90 to 39:61.. . ... Bridgestone Corporation

12/24/15 / #20150368383

Isoprene polymerization catalyst composition, method for producing synthetic polyisoprene, and synthetic polyisoprene

An isoprene polymerization catalyst composition includes: component (a): a rare earth element compound having a rare earth element-oxygen bond or a rare earth element-sulfur bond; component (b): an ionic compound; and component (c): at least one compound selected from the group consisting of a compound of formula (x): yr1ar2br3c and a compound having a repeating unit of formula (y): (—y(r1)o—) (where y is a metal selected from groups 1, 2, 12 and 13 in a periodic table, r1 and r2 are c1-10 hydrocarbon groups or hydrogen atoms and r3 is a c1-10 hydrocarbon group).. . ... Bridgestone Corporation

12/24/15 / #20150368382

Polymerization catalyst composition, method for producing synthetic polyisoprene, and synthetic polyisoprene

The polymerization catalyst composition includes: component (a): a rare earth element compound of formula (i): m-(nq1)(nq2)(nq3) (where m is at least one selected from lanthanoid, scandium, and yttrium, and nq1, nq2 and nq3 are amide groups and each have a m-n bond; component (b): a hydrocarbyl aluminoxane compound having a c1-20 hydrocarbon group; and component (c): a compound of formula (x): yr1ar2br3c (where y is a metal selected from groups 1, 2, 12 and 13 in a periodic table, r1 and r2 are c1-10 hydrocarbon groups or hydrogen atoms and r3 is a c1-10 hydrocarbon group).. . ... Bridgestone Corporation

12/24/15 / #20150367696

Anti-vibration device

An anti-vibration device includes: an inner cylinder connected to one of a vibration generating portion and a vibration receiving portion; an outer cylinder connected to the other one of the vibration generating portion and the vibration receiving portion; an intermediate cylinder pressed in an inner periphery of the outer cylinder; a main elastic body connecting the inner cylinder and the intermediate cylinder; and a stopper elastic body independent of the main elastic body, the stopper elastic body being fixed to the intermediate cylinder and facing, in a direction orthogonal to an axial direction of the inner cylinder, the inner cylinder with at least a cavity in between, the cavity being formed through the main elastic body in the inner cylinder axial direction, wherein the stopper elastic body has an axial stopper portion that protrudes beyond the intermediate cylinder and the outer cylinder in the inner cylinder axial direction.. . ... Bridgestone Corporation

12/24/15 / #20150367688

Pneumatic tire

A back surface part (13) is arranged on an inner surface (35) facing an inner side of a rim flange part (32) in a tire width direction (h) or arranged closer to the inner side in the tire width direction (h) than the inner surface (35), in a no-load reference state where a pneumatic tire (10) is mounted on an applied rim (30) and the internal pressure of the pneumatic tire (10) is set to atmospheric pressure, and a flat surface part (20) extending linearly along a tire radial direction (r) in the reference state is formed in a connecting portion of the back surface part (13) connected with a heel part (14), thereby making it possible to prevent a large force from acting thereon from the applied rim (30) and to improve uniformity.. . ... Bridgestone Corporation

12/24/15 / #20150367686

Pneumatic tire

A pneumatic tire, including a pair of bead portions, a pair of sidewall portions, and a tread portion, the sidewall portion comprising: a first decorative portion indicating a first mark; and a second decorative portion indicating a second mark and provided on the inner side in the tire radial direction of the first decorative portion such that at least a portion in the tire circumferential direction of the second decorative portion overlaps the first decorative portion in the tire radial direction, wherein brightness of the second mark of the second decorative portion is higher than brightness of the first mark of the first decorative portion, and an area of the second mark of the second decorative portion is smaller than an area of the first mark of the first decorative portion.. . ... Bridgestone Corporation

12/24/15 / #20150367684

Pneumatic radial tire for passenger vehicles

A pneumatic radial tire for passenger vehicles. When the tire is fitted on a rim and having an internal pressure of 250 kpa or higher, the section width sw and the outer diameter od of the tire satisfy a predetermined relationship. ... Bridgestone Corporation

12/24/15 / #20150367587

Tire, tire manufacturing apparatus, and tire manufacturing method

A tire frame member 17 is formed by aligning a pair of tire frame halves 17a, each including a bead portion 12, a side section 14, and a half-width crown half section 16a, with each other at the end faces of the crown half sections 16a. The tire radial direction inner side face of the crown half sections 16a includes an engagement section that engages with the outer face of a tire support member supporting the pair of tire frame halves 17a from the tire radial direction inner side, and restricts movement of the tire frame halves 17a.. ... Bridgestone Corporation

12/24/15 / #20150367178

Multi-piece solid golf ball

In a multi-piece solid golf ball having a core formed of a center core encased by an envelope layer, a cover having a plurality of dimples on its surface, and one or more intermediate layer disposed between the core and the cover, the center core and the envelope layer are each made of an elastic material, the radius r (mm) of the center core satisfies the condition 5≦r≦15, and the core has a cross-sectional hardness profile that satisfies specific conditions. This golf ball has an increased distance and a soft feel at impact, and also is able to prevent a decline in the durability to cracking.. ... Bridgestone Corporation

12/17/15 / #20150361256

Photocurable elastomer composition, gasket for hard disk drive, and hard disk drive

. . Disclosed is a photocurable elastomer composition that exhibits, when cured, excellent flexibility and barrier properties and has low compression set. The photocurable elastomer composition may comprise components (a) to (d) such that the mass ratio of the component (a) to the component (b) ((a):(b)) is from 25:75 to 75:25, and that the content of the component (c) is 50 mass % or less based on the total content of the components (a), (b), and (c).. ... Bridgestone Corporation

12/17/15 / #20150361248

Rubber composition, and pneumatic tire using same

The invention provides a rubber composition prepared by mixing, per 100 parts by mass of a rubber component comprising at least 50% by mass of a diene-based rubber, from 20 to 150 parts by mass of a filler, and from 0.05 to 30 parts by mass of a compound a which has a specific guanidine structure and has a functional group reactive with the diene-based rubber. The rubber composition improves both a high elastic modulus and a low tan δ. ... Bridgestone Corporation

12/17/15 / #20150360520

Pneumatic tire for motorcycle

A motorcycle pneumatic tire for travelling over rough terrain, wherein: the tire has a plurality of fin-like projections provided in the tire circumferential direction with intervals therebetween in an outer surface of the sidewall portion such that the fin-like projections each protrude from the outer surface and extend in the tire radial direction; a surface of at least the end portion on the outer side in the tire radial direction of each fin-like projection is formed to have an arcuate configuration protruding toward the tire inner surface side in a cross section in the width direction of the tire; and the arcuate surface of the end portion on the outer side in the tire radial direction of the fin-like projection is smoothly connected to an outer side surface of a shoulder block provided on the outermost side in the tire width direction of the tread portion.. . ... Bridgestone Corporation

12/17/15 / #20150360518

Pneumatic tire and method of producing the same

Disclosed is a pneumatic tire that includes a tread having a pattern asymmetrical about the tire equatorial plane, and that may reduce cavity resonance and has good steering stability. A pneumatic tire includes a tread portion having a pair of tread halves, the tread halves extending between the tire equatorial plane and respective outer ends in the tire width direction of the tread portion, respectively, and having different negative ratios. ... Bridgestone Corporation

12/17/15 / #20150360516

Heavy load tire

A first belt layer includes a cord extending at an inclination angle of greater than 45° with respect to the tire circumferential direction, a second belt layer includes a cord extending in the tire circumferential direction, and a third belt layer includes a cord extending at an inclination angle of 30° or less in the opposite direction from the cord of the first belt layer with respect to the tire circumferential direction. The belt layers are arranged in order, with the first belt layer furthest inward in the tire radial direction, on the outer circumferential side of a crown region of a carcass extending toroidally between a pair of bead portions. ... Bridgestone Corporation

12/17/15 / #20150360099

Golf club head

A golf club head of this invention includes a face portion, first and second interchangeable members, a first attachment portion from which the first and second interchangeable members are detachable, and a second attachment portion from which the first and second interchangeable members are detachable. The first interchangeable member is a reinforcing member that abuts against the rear surface of the face portion and restricts deformation of an abutment portion when the member is attached to the first attachment portion. ... Bridgestone Corporation

12/17/15 / #20150360091

Golf club head

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

12/10/15 / #20150353791

Laminate and method for producing same

The present invention provides a laminate obtained by arranging a composition to be in contact with a rubber, wherein the composition is prepared by blending a polythiol compound (a), an isocyanate group-containing compound (b) and a radical generator (c), and wherein the ratio of the total molar number of the isocyanate group contained in the isocyanate-containing compound (b) to the total molar number of the thiol group contained in the polythiol compound (a) (isocyanate group/thiol group) is from 0.2 to 0.78, and provides a method for producing the laminate. The present invention thus provides a laminate, in which the rubber layer is adhered using at least one of an adhesive or an adhesive sheet capable of strongly adhering a rubber member, especially a vulcanized rubber member, and provides a laminate adhering to a rubber article using at least one of a coating agent and a coating sheet.. ... Bridgestone Corporation

12/10/15 / #20150353689

Intermeshing mixing of filler and polymer solution masterbatch

A method includes: mixing a polymer cement and a filler to form a solution masterbatch; optionally drying the solution masterbatch to form a crumb polymer composition; mixing a low viscosity polymeric or oligomeric liquid into the solution masterbatch or crumb polymer composition; and intermeshing mixing the solution masterbatch or crumb polymer composition.. . ... Bridgestone Corporation

12/10/15 / #20150353657

Rubber composition, and pneumatic tire using same

The invention provides a rubber composition prepared by mixing, per 100 parts by mass of the rubber component comprising at least 50% by mass of a diene-based rubber, from 20 to 150 parts by mass of a filler, and from 0.05 to 30 parts by mass of a compound a which has a specific amidine structure and has a functional group reactive with the diene-based rubber. The rubber composition improves both a high elastic modulus and a low tan δ. ... Bridgestone Corporation

12/10/15 / #20150352908

Pneumatic tire

Provided is a pneumatic tire including a carcass constituted of at least one ply including a ply main body and ply turn-up portions, and a recessed portion formed to be recessed inward in the tire axial direction at an outer surface of the tire in a region between a rim separating point and the tire maximum width position in each sidewall portion. In a section taken along the tire axial direction in a non-rim assembled state, an angle α is defined as an angle that an outer surface straight line defined by each bead back face portion passing the first intersection and the second intersection forms with respect to the tire axial direction, and the angle α is in the range from 70 to 100°.. ... Bridgestone Corporation

12/10/15 / #20150352906

Pneumatic tire

A pneumatic tire, including: a lug groove opening at an end of a ground contact surface of a tread portion and extending toward the tire equatorial plane of the ground contact surface to terminate before reaching the tire equatorial plane; a communication groove making a corresponding pair of the lug grooves located on respective sides of the tire equatorial plane communicate with each other; and at least one widthwise groove, formed in a ground contact surface region demarcated between the end of the ground contact surface and the tire equatorial plane and between one pair and another pair adjacent thereto in the tread circumferential direction of the lug grooves and the communication groove communicating therewith, such that the widthwise groove extends in a direction of a tread width and an end thereof on the outer side in the tread width direction terminates within the ground contact surface region.. . ... Bridgestone Corporation

12/10/15 / #20150352903

Pneumatic tire

In a pneumatic tire, blocks 11 each have a block width that is increased from circumferential end portions to a circumferential middle portion of the block 11 in a manner such that widthwise end portions 10 located on both ends in the tread width direction are positioned in a circumferentially intermediate portion of the block 11 and also have the maximum circumferential length that is larger than the maximum width of the block 11, thereby having, in its plan view, a polygonal contour shape that includes end sides 11a located in the circumferential end portions, and circumferential distances a and a1 between a circumferential middle position 11b of each end side 11a of the block 11 and a circumferential middle position 10a of a line l connecting the widthwise end portions 10 of the block 11 are both twice or more of the maximum depth of circumferential grooves.. . ... Bridgestone Corporation

12/10/15 / #20150352902

Pneumatic tire

A pneumatic tire includes a pair of circumferential grooves, a plurality of lateral grooves, and longitudinal grooves communicating between the lateral grooves on the outsides, in a tire width direction, of the circumferential grooves. Each lateral groove includes a lateral groove first portion, a lateral groove second portion disposed further outward, in the tire width direction, than the lateral groove first portion, and a lateral groove step portion connecting the lateral groove first portion and lateral groove second portion.. ... Bridgestone Corporation

12/10/15 / #20150352901

Heavy load tire

Provided is a heavy load tire that includes: the first belt layer including a cord extending in the tire circumferential direction; the second belt layer including a cord extending to be inclined with respect to the tire circumferential direction; and the third belt layer including a cord extending to be inclined at an angle of 30° or less with respect to the tire circumferential direction in a direction opposite to that of the cord of the second belt layer. The first, the second, and the third belt layer are arranged in the stated order from the inner side to the outer side in the tire radial direction. ... Bridgestone Corporation

12/10/15 / #20150352542

Conductive polymer material, method for producing conductive polymer material, and image forming device member

A conductive polymer material which can achieve longer operating life by improving resistance stability at the time of performing continuous conduction, a method for producing the conductive polymer material, and an image forming device member are provided. A conductive polymer material containing a quaternary ammonium base incorporated in a main chain of a polymer material as an electrolyte cation, and an alkyl sulfate radical as an electrolyte anion.. ... Bridgestone Corporation

12/10/15 / #20150352416

Golf club and shaft

The present invention provides a golf club shaft. The shaft is made of a fiber reinforced resin. ... Bridgestone Corporation

12/10/15 / #20150352413

Golf club head manufacturing method

A method for manufacturing golf club head includes: preparing a head blank for an iron type golf club head, the head blank having a recess serving as a measure of polishing or grinding at least in a portion of a sole part of the head blank; and polishing or grinding the head blank according to the recess.. . ... Bridgestone Corporation

12/10/15 / #20150352412

Golf club head

A golf club head includes a head body that has a recess part at a front portion thereof, a face plate that is in a plate shape and arranged in the recess of the head body, a front surface of the face plate being for hitting a ball, and an elastic body that is made of an elastically deformable material and intervenes between the head body and the face plate, the elastic body being fixed to the head body and the face plate so that the face plate is slidable in the recess with respect to the head body. A hardness of the material of the elastic body is ranged between shore a hardness 10 and shore d hardness 80 (inclusive), and a front side elastic body arrangement surface of the head body to which the elastic body is fixed is not parallel to the front surface of the face plate.. ... Bridgestone Corporation

12/03/15 / #20150344679

Appearance enhancer for rubber compositions with antidegradants

The addition of a polyester resin comprising a copolymer of maleic anhydride or maleic acid and a linear or branched polyol, to a rubber composition provides a black, glossy appearance on the outer, exposed surface. The rubber composition may be formed into a tire sidewall component of a tire.. ... Bridgestone Corporation

12/03/15 / #20150343850

Tire with substantially helicoid-shaped sipe

A tire includes a circumferential tread having a tread element disposed thereon, wherein the tread element includes a top surface that defines a first plane. The tire further includes at least one substantially helicoid-shaped sipe disposed in the tread element. ... Bridgestone Corporation

12/03/15 / #20150343727

Green tire support device and method of removing drum from green tire

A green tire support device includes: a green tire support which supports a green tire; a lift which moves the green tire support up and down; and an actuator which moves the green tire support away from or closer to a drum along an axial direction of the drum, to remove the drum from the green tire.. . ... Bridgestone Corporation

12/03/15 / #20150343281

Iron type golf club head

An iron type golf club head includes a body part that is provided with a face surface and a sole surface; and a hosel part that is connected to the body part. A lower part of a back surface of the body part is an expansion part that expands rearward, a slit is disposed, which penetrates the expansion part from an upper surface to a lower surface of the expansion part, an elastic body is arranged in the vicinity of an upper part of the slit.. ... Bridgestone Corporation

11/26/15 / #20150337919

Vibration-damping device

A vibration-damping device (10) includes a first attachment member (11) having a cylindrical shape connected to any one of a vibration generating unit and a vibration receiving unit, a second attachment member (12) connected to the other unit, an elastic body (13) configured to connect both of the attachment members, and a partition member (15) configured to divide a liquid chamber (16) in the first attachment member (11) into a main liquid chamber (17) having a wall surface formed partly from the elastic body (13), and a subsidiary liquid chamber (18). In the partition member (15), an accommodating chamber (47) in communication with the main liquid chamber (17) and the subsidiary liquid chamber (18) through communication holes (46a, 46b) opened in an axial direction, an elastically deformable membrane (48) accommodated in the accommodating chamber (47) and separately exposed to the main liquid chamber (17) and the subsidiary liquid chamber (18) through the communication holes (46a, 46b), and restriction sections (51a, 51b) disposed more outside in the axial direction than the communication holes (46a, 46b) and overlapping the membrane (48) through the communication holes (46a, 46b) in the axial direction are installed. ... Bridgestone Corporation

11/26/15 / #20150336432

Pneumatic tire

A pneumatic tire including a pair of bead portions, a pair of sidewall portions extending from the bead portions, a tread portion extending across the respective sidewall portions, and a decorative band having a smooth surface and formed on the sidewall portion, wherein: the outermost end in the tire radial direction of the decorative band is positioned on the inner side in the tire radial direction than the largest width position of the tire; the decorative band includes a plurality of decorative lines each extending in the tire circumferential direction and having higher brightness than the base color of the tire; brightness of the decorative line having the highest brightness among the decorative lines is at least 80%; and brightness and/or hue of the decorative line having the highest brightness is different from brightness and/or hue of at least one of other decorative lines.. . ... Bridgestone Corporation

11/26/15 / #20150336429

Tire with bi-directional performance

A tire includes first and second sides defining first and second rotation directions. The first rotation direction is in a counterclockwise direction when the tire is viewed from the first side, and the second rotation direction is in a clockwise direction when the tire is viewed from the first side. ... Bridgestone Corporation

11/26/15 / #20150336345

Tire and method of producing the same

A tire with a circumferential reinforcement layer formed by spirally winding rubber strips in the same direction from different positions arranged in the width direction of the tire. The rubber strips (12a and 12b) are arranged with spaces in a part or the entirety of the tire in the width direction; among those end portions of the rubber strips, at least medial end portions (12bs and 12ae) that are located on the equatorial plane side of the tire are arranged at positions where the medial end portions completely overlap with rib-form land portions (2a) in the width direction of the tire; and the width of the rib-form land portions overlapping with the medial end portions is defined as w and the width of the rubber strips is defined as g, wherein a relationship g<w is satisfied.. ... Bridgestone Corporation

11/26/15 / #20150336342

Method for producing tire-curing bladder

A method for forming and curing an uncured tire-curing bladder with a bladder-curing bladder includes providing an uncured tire-curing bladder having an inner and outer surface on or in a recess of an outer-surface curing mold; inflating the bladder-curing bladder into the recess and exerting pressure on the inner surface of the uncured tire-curing bladder; and curing the uncured tire-curing bladder by providing heat, pressure, or both to the inner surface and the outer surface of the tire-curing bladder to form a cured tire-curing bladder. A thin tire-curing bladder and a curing apparatus are also provided.. ... Bridgestone Corporation

11/19/15 / #20150329710

Method of producing rubber tyre compounds

A method of producing rubber tyre compounds, including a first mixing step in which at least one cross-linkable, unsaturated-chain polymer base, silica, and a silane bonding agent in the alkoxymercaptoalkyl-silane class are mixed together; and a final mixing step in which a curing system having at least sulphur and accelerants is added to and mixed with the mix. A nucleophile compound and zinc oxide are mixed with the polymer base at the first mixing step. ... Bridgestone Corporation

11/19/15 / #20150329709

Rubber compound comprising polybutadiene in the polymer base

A method of producing rubber compounds having a cross-linkable polymer base at least partly composed of polybutadiene. The method includes a first mixing step in which the cross-linkable polymer base is mixed with at least one reinforcing filler; and at least a second mixing step in which the mix from the first mixing step is mixed with a curing system. ... Bridgestone Corporation

11/19/15 / #20150329655

Polymers functionalized with protected oxime 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 a protected oxime compound containing a cyano group.. . ... Bridgestone Corporation

11/19/15 / #20150329429

Ceramic sintered body and method of manufacturing ceramic sintered body

A ceramic sintered body according to the present invention comprises: silicon carbide and aluminum nitride, wherein a weight ratio of the aluminum nitride relative to a total weight ratio of the silicon carbide and the aluminum nitride is greater than 10% and 97% or smaller, and a bulk density is greater than 3.18 g/cm3.. . ... Bridgestone Corporation

11/19/15 / #20150328935

Sipe reinforcement

Provided is a tire, having a circumferential direction, an axial direction, and a radial direction, the tire comprising, a tread surface comprising a groove which defines a block; a sipe formed in the block, the sipe being defined by a depth, a width and a length each of the depth, width, and length being defined by elongated surfaces comprising, a first elongated surface, and a second elongated surface facing the first elongated surface and offset therefrom by the sipe width. The tire may comprise projections or an array of projections having any of various properties.. ... Bridgestone Corporation

11/19/15 / #20150328932

Tire heat exchange features

Provided is a pneumatic tire comprising an axis of operational rotation; a tread defining a cylindrical exterior surface extending both along and around the axis; a first sidewall defining a first sidewall exterior surface; a first shoulder region defining a first shoulder exterior surface; a heat exchange feature on the first shoulder region adapted to modify air flow over an exterior surface; a second sidewall defining a second sidewall exterior surface; a second shoulder region defining a second shoulder exterior surface; and a heat exchange feature on the second shoulder region adapted to modify air flow over an exterior surface. The heat exchange features on the first and second shoulder regions may be adapted to move air during clockwise operational rotation; or the heat exchange features on the first and second shoulder regions may be adapted to move air during counter-clockwise operational rotation.. ... Bridgestone Corporation

11/12/15 / #20150322299

Water-based adhesive compound

A water-based adhesive compound having water as a solvent; a cross-linkable, unsaturated-chain polymer base; an emulsifier of general formula (i), and an alkylphenol-formaldehyde resin; r1conr2chr3coox (i) where: r1 is an aliphatic group c6-c23 r2 is h or an aliphatic group c1-c8 r3 is h or an aliphatic or aromatic group c1-c8 and x is a metal cation.. . ... Bridgestone Corporation

11/12/15 / #20150322248

Tyre portions highly impermeable to oxygen

A tyre portion selected from the group including an innerliner, tread ply skim, tbr body ply skim, bead reinforcing skim, undertread, tie gum, squeegee, folded edge gum strip, belt edge gum strip and tread ply insert, and made from a compound including a polymer base and curing agents. The compound also includes a carbohydrate having 2 to 30 repetitive, possibly substituted, units.. ... Bridgestone Corporation

11/12/15 / #20150321518

Pneumatic tire

A pneumatic tire (10) has, in the surface of the tread (11), a central circumferential groove (12) located at the center of the contact patch width and extending circumferentially around the tire, a plurality of longitudinal grooves (13 (13a, 13b)) formed on the axially outside of the central circumferential groove (12), lug grooves (15), and blocks (16 (16a to 16c)) defined by the central circumferential groove (12), the longitudinal grooves (13), and the lug grooves (15). Each of the lug grooves (15) is formed such that its width in the shoulder region is greater than its width in the central region, and the sum of the groove area of the central circumferential groove (12) and the groove area of the longitudinal grooves (13) is smaller than the area of the lug grooves (15). ... Bridgestone Corporation

11/12/15 / #20150321517

Pneumatic tire and method of producing the same

Disclosed are a pneumatic tire that includes a tread having a pattern asymmetrical about the tire equatorial plane, and that is easy to produce and may surely reduce cavity resonance without lowering repair efficiency, and a method of producing the same. A pneumatic tire includes a tread portion having a pair of tread halves, the tread halves extending between the tire equatorial plane and respective outer ends in the tire width direction of the tread portion, respectively, and having different negative ratios. ... Bridgestone Corporation

11/05/15 / #20150315362

Rubber composition with imidazole-based silica shielding agent

Disclosed herein are vulcanizable and vulcanized rubber compositions comprising a conjugated diene polymer or copolymer, silica, and a substituted imidazole-based silica shielding agent of formula (i), and methods for preparing such rubber compositions. Also disclosed herein are tire components, such as tire treads, containing the rubber compositions disclosed herein.. ... Bridgestone Corporation

11/05/15 / #20150314653

Tire

A pneumatic tire is provided with a decoration portion at a tire side portion. The decoration portion includes decoration elements, which include ridges, and gullies, which are inclined with respect to the tire circumferential direction and divide the decoration elements into at least two regions. ... Bridgestone Corporation

11/05/15 / #20150314652

Tire

A pneumatic tire is provided with a decoration portion at a tire side portion. The decoration portion includes decoration elements, which include ridges, and gullies, which are inclined with respect to the tire circumferential direction and divide the decoration elements into at least two regions. ... Bridgestone Corporation

11/05/15 / #20150314649

Farm tyre

A farm tyre including a carcass; a tread supported by the carcass and having a number of lugs; a tread belt interposed between the carcass and the tread, and having an outer tread ply and an inner tread ply, which are superimposed and each have a number of metal cords embedded in a rubber strip; the tyre. The farm tyre also includes two tread ply wedges, each interposed between the lateral ends of the two tread plies; and protective caps covering the two ends of each of the tread plies, each made of rubber and folded into a ‘u’ about the respective ply end; wherein the protective cap of the inner tread ply is partly defined by an outer appendix of the corresponding tread ply wedge.. ... Bridgestone Corporation

10/29/15 / #20150307695

Adhesion tyre rubber compound

. . A tyre rubber compound having at least one cross-linkable, unsaturated-chain polymer base, and a curing system of at least sulphur, stearic acid, zinc oxide, and a chelating agent for complexing the zinc ion.. . ... Bridgestone Corporation

10/29/15 / #20150306919

Tire

A tire includes: a tread portion that comes into contact with a road surface; a sidewall portion connected to the tread portion; and a bead portion connected to an inner side of the side wall portion in a tire radial direction, wherein at least a part of the sidewall portion includes: a stain preventive rubber layer containing no antioxidant; and a paint layer adjacent to the stain preventive rubber layer and exposed on an outer surface of the sidewall portion, a tire radial outermost end of the paint layer is away from a bead toe outward in the tire radial direction by 65% or more of a tire cross-sectional height, and a tire radial outermost end of the stain preventive rubber layer is located outward in the tire radial direction relative to the tire radial outermost end of the paint layer.. . ... Bridgestone Corporation

10/29/15 / #20150306917

Tire with rounded tread elements

A tire having a circumferential tread includes a plurality of tread elements. At least one tread element has a sipe disposed therein. ... Bridgestone Corporation

10/29/15 / #20150306833

Band drum pop-up hinge

A tire building apparatus includes a tire building drum having a radially expanded position for building a tire carcass, and having a radially contracted position for releasing the tire carcass. A carcass release member is mounted on the drum such that the carcass release member moves from a retracted position when the drum is in its expanded position, to an extended position when the drum is in its contracted position, so that the carcass release member aids in releasing the tire carcass from the drum when the drum moves from its expanded position to its contracted position.. ... Bridgestone Corporation

10/29/15 / #20150306468

Contact state observation apparatus of golf ball and contact state observation method of golf ball

A contact state observation apparatus of golf ball can observe the contact phenomenon between a golf ball and a golf club which has been conventionally hidden and unobservable. The contact state observation apparatus of golf ball includes: launching means for launching a golf ball 10; an impact plate 20 with which the launched golf ball 10 impacts; and imaging means 30, provided opposite to the launching means across the impact plate 20, for shooting an image of the contact state between the golf ball 10 and the impact plate 20 at the time of impact of the golf ball 10. ... Bridgestone Corporation

10/22/15 / #20150299434

Antivibration rubber composition, and antivibration rubber

. . The present invention addresses the problem of providing: an antivibration rubber composition which can provide a hardened rubber product that has excellent antivibration properties (a low motion magnification), compression permanent strain and low-temperature properties and can keep strength properties (hardness, tensile elongation, tensile strength) and hot aging resistance thereof at good levels; and an antivibration rubber which is produced by hardening the rubber composition. An antivibration rubber composition characterized by comprising a rubber component, sulfur, a bismaleimide compound and n-phenyl-n-(trichloro-methylthio)benzenesulfoneamide, wherein the rubber component comprises a natural rubber and a polybutadiene rubber at a blend ratio of 60/40 to 90/10 by mass.. ... Bridgestone Corporation

10/22/15 / #20150299350

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

10/22/15 / #20150298509

Tire

A bead filler outer end 55a and a carcass outer end 45a are positioned to the inside of a rim flange ridge 215 in the tire radial direction trd. A rubber chafer outer end 75a is positioned to the outside of the rim flange ridge 215 in the tire radial direction trd. ... Bridgestone Corporation

10/22/15 / #20150298506

Pneumatic tire

A pneumatic tire (10), which has, in the surface of the tread (11), lug grooves (15) on one side extending from one axial edge towards the axial center of the tire in such a manner as to intersect with the circumferential direction of the tire and lug grooves (15) on the other side extending in a symmetrically opposite direction from the axial center towards the other axial edge of the tire, has at least one circumferential groove (12) extending circumferentially around the tire. Also, circumferential grooves (12, 13a, 13b) are so formed as to satisfy a relationship of “1≦(s/l)≦3” where l is the axial length of the central region, which is the region enclosed by two straight parallel lines each passing through the center between the contact width center (cl) and the contact edge with the shoulder regions being the regions axially outside of the parallel lines, and s is the total of the groove areas of the circumferential grooves (12, 13a, 13b) disposed in the central region. ... Bridgestone Corporation

10/22/15 / #20150298407

Method for manufacturing endless belt and endless belt

A method for manufacturing an endless belt includes: coating a depression that is formed between both belt longitudinal ends of surface rubber of a belt and to which an adhesion processing material is attached, with at least one layer of unvulcanized rubber sheet; and vulcanizing the unvulcanized rubber sheet to bond the unvulcanized rubber sheet to the surface rubber, in which a is less than b, where a is a belt longitudinal distance between a belt longitudinal edge of an interface of the unvulcanized rubber sheet and the adhesion processing material and a belt longitudinal edge of the depression, and b is a belt longitudinal distance between a belt longitudinal edge of an area to which the adhesion processing material is attached and the belt longitudinal edge of the depression.. . ... Bridgestone Corporation

10/22/15 / #20150298078

Kneading device

A kneading device uniformly kneads materials to be kneaded while efficiently and quickly kneading the materials to be kneaded. A kneading device includes a kneading chamber accommodating materials to be kneaded and a pair of rotors. ... Bridgestone Corporation

10/01/15 / #20150274944

Uses of biobased styrene

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

10/01/15 / #20150274939

Rubber compositions comprising metal carboxylates and processes for making the same

The present disclosure provides reinforcing filler-containing rubber compositions suitable for use in tires, and particularly in tire treads. These rubber compositions comprise a metal carboxylate. ... Bridgestone Corporation

10/01/15 / #20150273953

Rubber laminated body and tire

An object of the present invention is to provide: a rubber laminated body including a coating film which not only ensures decorativeness and visibility as desired but also exhibits good adhesion between a vulcanized rubber member and itself; and a tire using the rubber laminated body. In order to achieve the object, the present invention provides a rubber laminated body, comprising: a vulcanized rubber member; and a coating film provided to be attached to the vulcanized rubber member, wherein the coating film contains a polythiol compound.. ... Bridgestone Corporation

10/01/15 / #20150273952

Pneumatic tire

A pneumatic tire, while achieving excellent drainage performance by projections and depressions formed in a circumferential groove, can reduce road noise by making the circumferential stiffness of a land portion uniform even in the presence of such projections and depressions. A plurality of protuberances are arranged in at least one circumferential groove at intervals in the tread circumferential direction, the protuberances being raised from the inner surface of the circumferential groove and extending from the groove bottom of the circumferential groove to at least one groove wall surface in the tread width direction. ... Bridgestone Corporation

10/01/15 / #20150273946

Non-pneumatic tire

A non-pneumatic tire includes an attachment body (11) attached to an axle, an outer rim body (13) configured to surround the attachment body (11) from the outside in a tire radial direction, and a connecting member (15) configured to displaceably connect the attachment body (11) and the outer rim body (13), wherein the connecting member (15) includes elastic connecting plates (21, 22) each having both end sections (21a, 21b, 22a, 22b) connected to the attachment body (11) and the outer rim body (13), a plurality of curved end sections (21g, 21h, 22g, 22h) curved in a tire circumferential direction are formed at the inner end sections (21b, 22b) of the elastic connecting plates (21, 22) connected to the attachment body (11) in a direction in which the elastic connecting plates (21, 22) extend in a side view of the tire when the tire is seen from a tire width direction, and in the curved end sections (21g, 21h, 22g, 22h), the curve directions of the curved end sections (21g, 21h, 22g, 22h) adjacent to each other are opposite to each other.. . ... Bridgestone Corporation

10/01/15 / #20150273945

Sensing amplifier utilizing bit line clamping devices and sensing method thereof

A non-pneumatic tire includes an attachment body (11) attached to an axle, a ring member (14) including an inner rim (12) fitted onto the attachment body (11) and an outer rim (13) configured to surround the inner rim (12) from the outside in a tire radial direction, and a plurality of connecting members (15) disposed between the inner rim (12) and the outer rim (13) in a tire circumferential direction and configured to connect the rims (12) and (13) to each other, wherein at least a portion of the ring member (14) and the plurality of connecting members (15) are integrally formed of a synthetic resin material having a bending modulus of elasticity obtained through a 3-point bending test pursuant to iso 178 of 300 mpa or more and a charpy impact value obtained at 23° c. Through a charpy impact test pursuant to iso 179-1 of 5 kj/m2 or more.. ... Bridgestone Corporation

10/01/15 / #20150273936

Non-pneumatic tire

A non-pneumatic tire (1) is provided including an attachment body (11) attached to an axle, an outer rim body (13) configured to surround the attachment body (11) from the outside in the tire radial direction, and a connecting member (15) configured to connect the attachment body (11) and the outer rim body (13) in a displaceable manner, wherein, in the connecting member (15), a size of one end section (15a) connected to the outer rim body (13) in the tire width direction (h) is larger than a size of the other end section (15b) connected to the attachment body (11) in the tire width direction (h).. . ... Bridgestone Corporation

10/01/15 / #20150273935

Non-pneumatic tyre

A non-pneumatic tire includes an attachment body (11) attached to an axle, a ring member (14) including an inner rim (12) fitted onto the attachment body (11) and an outer rim (13) configured to surround the inner rim (12) from the outside in a tire radial direction, and a plurality of connecting members (15) disposed between the inner rim (12) and the outer rim (13) in a tire circumferential direction and configured to connect the rims (12) and (13) to each other, wherein at least a portion of the ring member (14) and the plurality of connecting members (15) are integrally formed of a synthetic resin material having a bending modulus of elasticity obtained through a 3-point bending test pursuant to iso 178 of more than 300 mpa and a deflection temperature under a load at 0.455 mpa obtained pursuant to astm d648 of 62° c. Or more.. ... Bridgestone Corporation

09/24/15 / #20150267031

Polymers functionalized with heterocyclic nitrile compounds

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

09/24/15 / #20150267012

Cured sheet, laminate having the same and process for manufacturing the laminate

There is provided a cured sheet and a laminate having the same, wherein the cured sheet is prepared by curing a laminate forming sheet containing an ethylene-vinyl acetate copolymer and a polyethylene, excellent in adhesion durability and has a sufficient flexibility even in the case of a high content of the polyethylene. A cured sheet constituting a laminate and a laminate having the same, wherein the cured sheet is prepared by curing through cross-linking a laminate forming sheet comprising a composition containing an ethylene-vinyl acetate copolymer, a polyethylene and an organic peroxide; a weight ratio of the ethylene-vinyl acetate copolymer (eva) to the polyethylene (pe) (eva:pe) is in a range of 3:7 to 8:2; and the cured sheet has a sea-island structure wherein the ethylene-vinyl acetate copolymer constitutes a sea phase and the polyethylene constitutes an island phase.. ... Bridgestone Corporation

09/24/15 / #20150266346

Pneumatic tire

A pneumatic tire, having a plurality of sipes formed in land portions of a tread thereof so as to each extend in the tire width direction, characterized in that: in a cross section of the land portion orthogonal to the sipe extending direction, provided that an imaginary sipe main line links two ends in the tire radial direction of each sipe, at least two of the sipes are “inclined sipes” each having the sipe main line inclined with respect to the tire radial direction; each inclined sipe has inner bent portions each protruding with respect to the sipe main line with peaks positioned deeper than 20% of the sipe depth; and the sipe main line(s) of at least one of the inclined sipes are inclined in a direction opposite, with respect to the tire radial direction, to the sipe main line of any of the other inclined sipes.. . ... Bridgestone Corporation

09/24/15 / #20150266345

Pneumatic tire

A pneumatic tire, having in a tread surface thereof a pair of circumferential grooves formed on respective sides of the tire equatorial plane in the middle, a rib-like central land portion row demarcated by the circumferential grooves, and a plurality of lateral grooves extending between the central land portion row and each tread end, comprises in each half region of the tread: a row of first intermediate blocks each having a circumferential length d2 and demarcated by the lateral grooves, the corresponding circumferential groove, and first longitudinal grooves; and a row of second intermediate blocks demarcated by the lateral grooves, the first longitudinal grooves, and second longitudinal grooves, wherein facing openings of the first/second longitudinal grooves adjacent in the tire circumferential direction are offset from each other, and provided that d1 represents a circumferential distance between adjacent ends of the adjacent first and second intermediate blocks, d1≦d2/2.. . ... Bridgestone Corporation

09/17/15 / #20150259361

Organometallic catalyst complex and polymerization method employing same

. . A novel class of organometallic complexes can be used as an ingredient of a catalyst system. The catalyst system can be used in polymerizations of ethylenically unsaturated hydrocarbon monomers that include both olefins and polyenes.. ... Bridgestone Corporation

09/17/15 / #20150258861

Material inclusion tread

Provided is a tire comprising a radial direction, an axial direction, a circumferential direction, and a tire lug. The tire lug may be bounded by a plurality of surfaces. ... Bridgestone Corporation

09/17/15 / #20150258860

Winter tyre tread band with three-dimensional sipes

A winter tyre tread band having: a number of longitudinal and transverse grooves defining a number of blocks, each projecting radially upwards from a base surface of the tread band; and a number of sipes formed in at least some of the blocks, and each of which extends radially inwards of a corresponding block, from a top surface forming the rolling surface of the tread band; each sipe has a wave pattern when the corresponding block is viewed in any one of three planes perpendicular to one another and defined by a longitudinal axis, a transverse axis, and a radial axis.. . ... Bridgestone Corporation

09/17/15 / #20150258853

Non-pneumatic tire

A non-pneumatic tire includes an attachment body (11) attached to an axle, a ring member (14) including an inner rim (12) fitted onto the attachment body (11) and an outer rim (13) configured to surround the inner rim (12) from the outside in a tire radial direction, and a plurality of connecting members (15) disposed between the inner rim (12) and the outer rim (13) in a tire circumferential direction and configured to connect the rims (12) and (13) to each other, wherein at least a portion of the ring member (14) and the plurality of connecting members (15) are integrally formed of a synthetic resin material having a bending modulus of elasticity at −20° c. Obtained through a 3-point bending test that is two times or less a bending modulus of elasticity at 60° c. ... Bridgestone Corporation

09/17/15 / #20150258388

Multi-piece solid golf ball

In a multi-piece solid golf ball having a core, an intermediate layer and a cover, the ball and the intermediate layer have respective surface hardnesses which are set so as to satisfy a specific relationship. Also, the respective initial velocities measured for the core, a sphere composed of the core over which an envelope layer and the intermediate layer have been formed (intermediate layer-encased sphere) and the ball are set so as to satisfy a specific relationship. ... Bridgestone Corporation

09/10/15 / #20150252063

Hydroxyl group-containing methylstyrene and polymers incorporating same

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

09/10/15 / #20150251499

Tire tread featuring a sipe

Various embodiments of a tire tread having at least one sipe comprising an s-shaped geometry are disclosed.. . ... Bridgestone Corporation

09/10/15 / #20150251492

Non-pneumatic tire

A non-pneumatic tire includes an attachment body (11) attached to an axle, a ring member (14) including an inner rim (12) fitted onto the attachment body (11) and an outer rim (13) configured to surround the inner rim (12) from the outside in a tire radial direction, and a plurality of connecting members (15) disposed between the inner rim (12) and the outer rim (13) in a tire circumferential direction and configured to connect the rims (12) and (13) to each other, wherein at least a portion of the ring member (14) and the plurality of connecting members (15) are integrally formed of a synthetic resin material having a bending modulus of elasticity obtained through a 3-point bending test pursuant to iso 178 of 300 mpa or more and a melting point of 120° c. Or more and 350° c. ... Bridgestone Corporation

09/03/15 / #20150246577

Non-pneumatic tire

A non-pneumatic tire includes an attachment body (11) attached to an axle, a ring member (14) including an inner rim (12) fitted onto the attachment body (11) and an outer rim (13) configured to surround the inner rim (12) from the outside in a tire radial direction, and a plurality of connecting members (15) disposed between the inner rim (12) and the outer rim (13) in a tire circumferential direction and configured to connect the rims (12) and (13) to each other, wherein at least a portion of the ring member (14) and the plurality of connecting members (15) are formed of a synthetic resin material having a bending modulus of elasticity obtained through a 3-point bending test pursuant to international standard iso 178 of 300 mpa or more, and a breaking strain obtained through a tension test pursuant to international standard iso 527-1 and 2 of 3% or more.. . ... Bridgestone Corporation

08/27/15 / #20150240054

Method for manufacturing rubber composition

The purpose of the present invention is to provide a rubber composition that can achieve improved ozone resistance and processing properties (scorch properties) in the rubber composition and that can be favorably used as an antivibration rubber material. A method for manufacturing a rubber composition by adding (a) n-phenyl-n-(trichloromethyl-thio)benzenesulfonamide and (b) an amine antioxidant to a rubber component primarily containing diene-based rubber, wherein the method for manufacturing a rubber composition is characterized in being separately provided with a step of mixing component raw materials containing component (a) and a step of mixing component raw materials containing component (b), whereby the mixing steps comprise at least two stages.. ... Bridgestone Corporation

08/27/15 / #20150239307

Tire internal pressure warning system

The present invention provides a tire internal pressure warning system, comprising: an internal pressure data acquisition apparatus for obtaining data of internal pressure of each tire 5 of a vehicle 6 (a tpms sensor transmitter 1 and a tpms receiver 2); and an information terminal device 3 for determining whether there is a puncture-based failure or a failure resulting from a natural pressure drop, based on a change in the internal pressure of each tire received from the tpms receiver 2, and displaying a warning in accordance with the failure condition.. . ... Bridgestone Corporation

08/20/15 / #20150232602

Isoprene copolymer and method of producing the same

A copolymer having properties (durability (fracture resistance, abrasion resistance, and crack-growth resistance)) similar to those of natural rubber and a method of producing the copolymer are provided. An isoprene copolymer has a styrene block or a butadiene block at a terminal thereof, wherein styrene monomers account for less than 5 mol % of all monomers forming the isoprene copolymer having the styrene block; butadiene monomers account for 10 mol % or less of all monomers forming the isoprene copolymer having the butadiene block; and cis-1,4 bond content of a portion derived from isoprene accounts for at least 95% in total.. ... Bridgestone Corporation

08/20/15 / #20150231934

Tire

A circumferential depressed portion extended along a tire circumferential direction is formed on an outer surface of a tire side portion of a pneumatic tire. On a tire cross-sectional plane, a rim-side outer surface formed in a range from a rim separation point to an inner-side end of the circumferential depressed portion along a tire radial direction is formed along a given circular-arc curved line. ... Bridgestone Corporation

08/20/15 / #20150231933

Low compaction cantilever tire

A low compaction cantilevered tire construction is provided which is designed for use at relatively low inflation pressures and which has sidewalls with a relatively uniform bending resistance through the majority of the sidewall. When the tire is placed under high loads at low inflation pressures the sidewall deflects substantially radially and allows the tread portion of the tire to maintain its intended shape thus improving the contact area of the tire and providing a tire having a relatively high contact area and thus relatively low soil compaction for a given loading.. ... Bridgestone Corporation

08/13/15 / #20150225506

Methods of making blocked-mercapto alkoxy-modified silsesquioxane compounds

Methods of forming blocked-mercapto alkoxy-modified silsesquioxanes are provided. The blocked-mercapto 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 as alcohol (a volatile organic compound (voc)), during compounding and further processing. ... Bridgestone Corporation

08/13/15 / #20150224829

Tire

A tire (1) in which a carcass fold-back portion (40) is wound around a bead core (10) includes a hard bead filler (50) arranged on an outer side of a carcass (20) in the tread width direction (twd), the hard bead filler (50) extends, along a tire radial direction (trd), from an outer side of the bead core (10) at least to a center (bo) of the bead core (10), and a thickness (t) of the hard bead filler (50) along the tread width direction (twd) is not shorter than 0.5 mm on a straight line (l) passing over the center (bo) of the bead core (10) in the tread width direction (twd).. . ... Bridgestone Corporation

08/13/15 / #20150224827

Winter tyre with improved traction on snow surfaces

A winter tyre with improved traction on snow surfaces; the tyre has a tread with a raised pattern defined by a number of longitudinal and transverse grooves which form at least one longitudinal row of blocks projecting radially from a base surface of the tread. Each block has two longitudinal lateral surfaces bounding two corresponding longitudinal grooves, and two transverse lateral surfaces bounding two corresponding transverse grooves. ... Bridgestone Corporation

08/13/15 / #20150224826

Pneumatic tire

The present invention provides a pneumatic tire capable of exhibiting improved on-snow cornering performance on a snowy road and improved on-ice cornering performance on an icy road surface. Specifically, the pneumatic tire comprises: a tread portion (1) including a ground contact surface (5) to be brought into contact with a road surface when the tire is rotated; a pair of sidewall portions (3) forming side surfaces of the tire and extending from the tread portion (1) toward the inner side in the tire radial direction, respectively; and buttress portions each forming an outer surface region (7) ranging from an end portion in the width direction of the ground contact surface (5) to the corresponding sidewall portion (3), wherein polygonal blocks (11) are formed in the outer surface region (7) by demarcation by grooves (9).. ... Bridgestone Corporation

08/13/15 / #20150224534

Fiber coating device for tires and fiber coating method for tires

The present invention provides a fiber coating device for tires, for coating an inner surface of a tire with fibers, comprising: a tire support means for supporting a tire; a fiber supply means including a fiber jetting outlet and adapted to spray fibers from the fiber jetting outlet onto an inner surface of the tire supported by the tire support means; and a fiber charging means for charging the fibers sprayed from the fiber jetting outlet, wherein the fiber jetting outlet of the fiber supply means and the fiber charging means are disposed in a space defined by the inner surfaces of the tire and a pair of imaginary disc-shaped faces of which circumferential peripheries correspond to inner circumferential peripheries of respective bead portions of the tire when the tire is supported by the tire support means.. . ... Bridgestone Corporation

08/06/15 / #20150218329

Member having cured layer obtained by curing curable resin composition at least on surface thereof

A member that, while maintaining water repellency and oil repellency, has an improved slidability (water-sliding property that allows for easy removal of water droplets on a surface) is provided. The member according to the present invention having, at least on a surface thereof, a cured layer obtained by curing a curable resin composition includes, in an area within 1 nm in depth from an outermost surface of the cured layer, a fluorine element at 1.0 at % to 10.0 at % and a silicon element at 1.0 at % to 20.0 at %.. ... Bridgestone Corporation

08/06/15 / #20150217604

Pneumatic tire

A pneumatic tire, comprising at least sidewall portions and rim guards each provided at the corresponding sidewall portion, wherein: in a cross section in the width direction of the tire assembled with a prescribed rim, an outer contour line, of the rim guard, situated on the outer side in the tire radial direction than the radially outermost peak of the rim guard has an arcuate configuration of which the center of curvature is located on the external side of the tire; radius of curvature r of the outer contour line is in the range of 5 mm≦r≦40 mm; and provided that h represents a distance in the tire radial direction measured from the radially innermost peak to the outermost position in the tire radial direction of a rim flange, 2 mm≦h≦40 mm.. . ... Bridgestone Corporation

07/23/15 / #20150203662

Rubber compositions including siliceous fillers

Vulcanizates with desirable properties can be obtained from compositions incorporating polymers that include hydroxyl group-containing aryl functionalities, silica or other particulate filler(s) that contain or include oxides of silicon and a group or compound that can act to covalently bond the filler particles and the polymer. The group can be provided as a substituent of the filler particle, or a discreet compound can be provided in the composition.. ... Bridgestone Corporation

07/23/15 / #20150203299

Conveyor belt and conveyor belt apparatus

A conveyor belt (13) includes a main body rubber (14) extending in a belt longitudinal direction, tension members (15) embedded in the main body rubber throughout a circumference of the main body rubber (14) in the belt longitudinal direction, and loop coils (16) embedded in the main body rubber (14) and having an annular shape in plan view taken in a belt thickness direction (t). The loop coils (16) are embedded at one side of the main body rubber (14) in the belt thickness direction (t), and the tension members (15) are embedded at the other side of the main body rubber (14) in the belt thickness direction (t) relative to the loop coils (16). ... Bridgestone Corporation

07/16/15 / #20150197630

Method for manufacturing polymer composition and the polymer composition

An object of the present invention is to provide a polymer composition having properties resembling those of natural rubber, e.g. Good durability (fracture resistance, wear resistance, and crack growth resistance), and a method for manufacturing the polymer composition. ... Bridgestone Corporation

07/09/15 / #20150191053

Tire

In a cross section of this tire (1) orthogonal to the tire circumferential direction and running along the tread width direction, an end (7b) that is outside in the tire diameter direction of an electronic device (7) is located farther inward in the tire diameter direction than a reference position that is located outward in the tire diameter direction away from an outer rim end portion (2b), the outer rim end portion being located on the outside in the tire diameter direction of a rim contact surface, and the distance between the outer rim end portion and the reference position being equal to the thickness (t1) of a bead portion in the outer rim end portion.. . ... Bridgestone Corporation

07/09/15 / #20150191049

Pneumatic tire

By adopting an appropriate block pattern, a pneumatic tire guarantees the tire ground contact area without impairing drainage performance and enhances on-ice performance. On the tread are formed land portions (5a, 5b) defined by at least one circumferential main groove (3) extending in the tire circumferential direction and blocks (11) in a shoulder land portion (5b) located outermost in the tire width direction among the land portions (5a, 5b), the blocks (11) being defined by narrow grooves (7a, 7b) with a groove width narrower than that of the circumferential main groove (3) and by at least one auxiliary groove (9) with a groove width that increases outward in the tire width direction at least in a region not adjacent to the circumferential main groove. ... Bridgestone Corporation

07/09/15 / #20150191048

Tire

A tire (1) has a groove bottom (50b2) of a groove wherein multiple protrusions (500) are disposed. The protrusions (500) extend from one side wall (50b1) that forms the groove to the other side wall (50b3) opposed to the one side wall (50b1). ... Bridgestone Corporation

07/09/15 / #20150190848

Systems and methods for the management of waste associated with processing guayule shrubs to extract rubber

Systems and methods for managing the waste associated with the extraction of rubber from guayule shrubs are provided. Also provided is a portable local sub-station for reducing the transportation costs associated with the processing of guayule shrubs for the extraction of rubber. ... Bridgestone Corporation

07/02/15 / #20150184933

Methods for desolventization of bagasse

. . Provided herein are methods for the removal of organic solvents from wet bagasse. The use of the methods result in dried bagasse that contains no more than 1 weight percent organic solvents.. ... Bridgestone Corporation

07/02/15 / #20150184717

Vibration damping device

In a vibration damping device (10), a plurality of pressure-receiving liquid chambers (25, 26) of which portions of wall surfaces are constituted of an elastic body (14) are disposed within the first mounting member (12). The pressure-receiving liquid chambers (25, 26) include a pair of first pressure-receiving liquid chambers (25) that communicate with each other through a first limiting path (27), and a second pressure-receiving liquid chamber (26) that communicates with an auxiliary liquid chamber (28) through a second limiting path. ... Bridgestone Corporation

07/02/15 / #20150183971

Rubber composition for tire treads

The present invention is a rubber composition for tire treads, of which the temperature of the peak position of the temperature curve of tan δ is −16.0° c. Or higher and −6.0° c. ... Bridgestone Corporation

07/02/15 / #20150183271

Base tire manufacturing method and base tire

The invention provides a base tire manufacturing method and a base tire having a proper thickness for the rubber layer by setting the thickness of the rubber layer in such a manner as to optimize the buffing allowance for the cure-molded base tire without placing limits on the shape of the post-buffing base tire. The base tire thus manufactured has a belt layer, an outermost rubber layer of a predetermined width disposed over the belt layer for application of a tread therto, and edge rubber members at both axial ends of the outermost rubber layer. ... Bridgestone Corporation

07/02/15 / #20150183270

Laminate for inner liner, and tyre using same

Provided is a laminate for inner liner which uses a resin film in which adhesiveness between an adjacent member such as a carcass and a resin film can be sufficiently secured and a tire using the same. The laminate is a laminate for inner liner including: a gas barrier layer 1 comprising a resin material which is composed of a thermoplastic resin or a mixture of a thermoplastic resin and a thermoplastic elastomer; and rubber layers 2a, 2b each arranged on each of both sides of the gas barrier layer. ... Bridgestone Corporation

06/25/15 / #20150179852

Sealing film for solar cells, solar cell module, and method for selecting sealing film for solar cells

A sealing film for solar cells for a solar cell module constituting a solar power generation system with a system voltage of 600 v or more, and is capable of suppressing the generation of pid phenomenon; and a solar cell module are provided. Such sealing film for solar cells consists of a crosslinkable curable film of a composition containing an ethylene-polar monomer copolymer and a crosslinking agent. ... Bridgestone Corporation

06/25/15 / #20150175857

Composition, adhesive and layered body

A composition includes: a polythiol compound; a compound having plural epoxy groups; a radical generator; and an amine-based catalyst. In the composition, the ratio (ep/sh (epoxy groups/thiol groups)) of the total molar number (ep) of epoxy groups contained in the compound having plural epoxy groups to the total molar number (sh) of thiol groups contained in the polythiol compound is 0.50 or higher but lower than 2.00.. ... Bridgestone Corporation

06/25/15 / #20150174954

Airless tire construction having variable stiffness

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 stiffness of the webbing varies along an axial direction of the airless tire. ... Bridgestone Corporation

06/18/15 / #20150170109

Belt management system and method

A belt management system of the present invention is formed by a management server (1) that manages belts that are used in a belt conveyor, a terminal (2) that is provided in a location where the belt conveyor is installed, and a data server (3) that is provided in a company that manufactures and sells belts, wherein the management server is provided with: a transceiver unit (10) that receives in time series belt remaining thickness data that shows the thickness of the belt and that is supplied from the terminal at each one of predetermined periods; and a belt lifespan prediction unit (11) that, by writing the belt remaining thickness data in the management database in time series, and reading from the management database the belt remaining thickness data that has been stored in time series, and dividing the difference between the predetermined periods by the usage amount of the belt at each of the predetermined periods, and determining a unit amount of change in the usage amount units, and subtracting from the most recent belt remaining thickness data a management threshold value which shows the thickness of the belt and which is to be used as an indicator for replacement, and dividing the result of this subtraction by the unit amount of change, determines a remaining lifespan that shows the future amount of use until the belt needs to be replaced.. . ... Bridgestone Corporation

06/18/15 / #20150165830

Tire printing method and tire printing apparatus

A tire printing method capable of highly precise printing by quickly and accurately measuring the profile of the side face of a tire for printing and setting a printing clearance properly. The printing is done on the side face (3) of the tire (2) by discharging ink from nozzles of a print head (61) disposed to face the side face (3). ... Bridgestone Corporation

06/18/15 / #20150165829

Tire

A tire is provided with multiple projection parts in a groove bottom of a groove portion. The projection parts extend from one side wall to the other side wall opposed to the one side wall, the side walls forming the groove portion. ... Bridgestone Corporation

06/18/15 / #20150165827

Tire

A tire is provided with multiple projection parts in a groove bottom of a groove portion. The projection parts extend from one side wall to the other side wall opposed to the one side wall, the side walls forming the groove portion. ... Bridgestone Corporation

06/18/15 / #20150165826

Motorcycle tire

A motorcycle tire that improves straight-line traction performance and also improves turning performance is provided. In a motorcycle tire, a condition of lc/t≦0.08 is satisfied for center blocks, a condition of lm/lc>1.0 is satisfied for the center blocks and intermediate blocks, and the center blocks and the intermediate blocks are either separate from each other in the tire circumferential direction, or overlap each other in the tire circumferential direction with an overlap region of 0.5 lc or less.. ... Bridgestone Corporation

06/04/15 / #20150153676

Method for manufacturing toner supply roller and toner supply roller

Provided is a technique for manufacturing a toner supply roller in which the toner conveying performance and the scraping performance of unneeded toner are excellent as well as the above-mentioned problems in molding can be resolved. Also provided is a method for manufacturing a toner supply roller including: an insertion process in which a roller member 10 comprising a shaft 11 and an elastic layer 12 composed of a foam having a columnar shape supported on the outer periphery of the shaft is inserted into a cylindrical forming tool m having on the inner peripheral surface irregular concaves and convexes or a recessed groove along the longitudinal direction; a transfer process in which the roller member inserted into the cylindrical forming tool is heated and the irregular concaves and convexes or the recessed groove along the longitudinal direction on the inner peripheral surface of the cylindrical forming tool are transferred on the surface of the roller member; and a releasing process in which the roller member on the surface of which the irregular concaves and convexes or the recessed groove along the longitudinal direction are transferred is taken out from the cylindrical forming tool to obtain a roller.. ... Bridgestone Corporation

06/04/15 / #20150152249

Amino alkoxy-modified silsesquioxane adhesives for improved metal adhesion and metal adhesion retention to cured rubber

Amino alkoxy-modified silsesquioxanes (amino ams), and/or amino co-ams compounds that also comprise a mercaptosilane or a blocked mercaptosilane, are excellent adhesives for coating plated or unplated metal wire for adherence of the wire to a rubber stock. The amino ams and/or the amino/mercaptan co-ams adhesives can be used with all types of rubber and there is no requirement for the use of special adhesive additives to the rubber vulcanizates, such as, but not limited to, cobalt, resins and high sulfur levels. ... Bridgestone Corporation

06/04/15 / #20150151590

Pneumatic tire

A tire is a tire in which circumferential grooves, and lug grooves comprising opening portion in tread end and which extend in the tread width direction from the tread end to the circumferential groove, are formed. Projection parts are provided in the groove bottom of the circumferential grooves. ... Bridgestone Corporation

06/04/15 / #20150151587

Tire

A tire includes a circumferential direction main groove on a tread surface, first and second circumferential supplemental grooves located on both sides of the circumferential direction main groove, and first and second central land portions formed between the circumferential direction main groove and the first and second circumferential direction supplemental grooves. The first and second central land portions have plural width direction sipes, respectively, and each of the width direction sipes extends to the circumferential main groove, the circumferential main groove has shallow grooved portions and deep grooved portions. ... Bridgestone Corporation

06/04/15 / #20150151583

Pneumatic tire

On the tread surface, land portions are defined by a pair of circumferential main grooves and divided, by circumferential narrow grooves 3 and multiple lateral grooves 4 connecting between the circumferential main groove and the circumferential narrow groove or between the circumferential narrow grooves, into block rows l each of which including polygonal blocks arranged in a tire circumferential direction, wherein a block arrangement having the polygonal blocks 5 arranged in a line-symmetric manner with respect to the tire equator as an axis of symmetry includes side regions r1, r2 facing each other across the tire equator c and displaced from each other in the tire circumferential direction by a phase difference of 0.2 to 0.4 times of a repetition pitch of a pattern of the block row.. . ... Bridgestone Corporation

05/28/15 / #20150148489

Polymers functionalized with nitrile compounds containing a protected amino group

A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomer with an anionic initiator to form a reactive polymer; and (ii) reacting the reactive polymer with a nitrile compound containing a protected amino group, where the protected amino group is directly attached to a moiety selected from the group consisting of acyclic moieties, heterocyclic moieties, and non-aromatic cyclic moieties.. . ... Bridgestone Corporation

05/28/15 / #20150148458

Production method for purified polysaccharide fibers, purified polysaccharide fibers, fiber-rubber complex, and tire

The present invention provides a production method for purified polysaccharide fibers in which carbon disulfide emission is suppressed while efficiently producing purified polysaccharide fibers having excellent strength, purified polysaccharide fibers produced by using the production method, a fiber-rubber complex using the purified polysaccharide fibers, and a tire having excellent tire characteristics using the fiber-rubber complex. The production method for purified polysaccharide fibers of the present invention is a production method for purified polysaccharide fibers of wet-spinning or dry-wet-spinning polysaccharide by bringing a polysaccharide solution obtained by dissolving a polysaccharide raw material in a liquid including an ionic liquid into contact with a solidification liquid including an ionic liquid, in which a concentration of the ionic liquid in the solidification liquid is 0.4% by weight to 50% by weight and the anionic moieties of the ionic liquid in the polysaccharide solution and the ionic liquid in the solidification liquid have one or more types selected from the group consisting of a phosphinate ion, a phosphate ion, and a phosphonate ion.. ... Bridgestone Corporation

05/28/15 / #20150144243

Pneumatic tire

A pneumatic tire, which may include a bead portion reinforcing cord layer disposed along a turn-up portion of a carcass, includes at least one component member selected from the group consisting of a carcass cord ply and a belt cord layer and/or the bead portion reinforcing cord layer including an end rubber wrapping the end part thereof, the end rubber having a loss tangent larger than 0.20 and 0.35 or smaller at 2% strain at 25° c. And a difference Δe′ between a storage modulus at 0.1% strain and a storage modulus at 2% strain at 25° c. ... Bridgestone Corporation

05/21/15 / #20150136882

Methods for increasing the extractable rubber content of non-hevea plant matter

Methods for increasing the extractable rubber content of non-hevea plant matter that entail the use of particular forms of hammer milling and/or roller milling in an increase in the amount of rubber that can be extracted from the resulting plant matter such as by organic solvent extraction or aqueous extraction are provided. In certain embodiments, the methods are for increasing the extractable rubber content of guayule plant matter, and entail the use of particular forms of hammer milling in combination with roller milling and flaking to increase the amount of rubber that can be extracted from the guayule plant matter such as by organic solvent extraction or aqueous extraction.. ... Bridgestone Corporation

05/21/15 / #20150135812

Method and apparatus for measuring tire ground contact properties

A tire (t) for measurement, having applied thereto a required camber angle (ca) and slip angle (sa), is contacted against a rotatably driven rotating drum (1) having embedded therein a three-component force sensor (measurement unit 3) capable of measuring ground contact pressure (p), width direction shear stress (τx), and circumferential shear stress (τy) (properties) of the tire (t). The rotating drum (1) and tire (t) are rotated and the tire (t) is passed over the three-component force sensor (3) multiple times. ... Bridgestone Corporation

05/07/15 / #20150126675

Polydienes and diene copolymers having organophosphine functionality

. . Embodiments provide polydienes and diene copolymers having organophosphines functionality. Specific embodiments employ phosphorus-containing organometal initiators and copolymers prepared by anionically polymerizing conjugated diene monomer and vinyl organophosphine.. ... Bridgestone Corporation

05/07/15 / #20150126673

Compositions containing purified non-hevea rubber and related purification methods

Provided herein are organic solvent-based processes for the isolation of purified natural rubber from non-hevea plants. The processes are particularly useful with plant matter that comprises at least 90% by weight roots sourced from taraxacum kok-saghyz (russian dandelion), scorzonera tau-saghyz (tau-saghyz), scorzonera uzbekistanica, and combinations thereof. ... Bridgestone Corporation

05/07/15 / #20150126642

Halogenated diene rubber for tires

A rubber composition is provided that includes a partially halogenated diene polymer that has a controllable microstructure, and no more than about 50% of the n repeat units are in blocks of three or more consecutive units. In embodiments, a reinforcing filler is also included in the rubber composition. ... Bridgestone Corporation

05/07/15 / #20150125685

Rubber sheet, pneumatic tire using same, and method for producing rubber sheet

The present invention provides a rubber sheet having a thickness of 500 μm or less, wherein a rubber component in a rubber composition to constitute the rubber sheet contains a liquid elastomer having a weight-average molecular weight of from 500 to 100000, and a method for producing a rubber sheet having a thickness of 500 μm or less, which includes a step (a) of forming a film of a rubber composition not containing an organic compound having a boiling point not higher than 150° c., on a substrate sheet at a temperature at which the viscosity of the rubber composition falls within a range of from 10 to 100000 mpa·s. Using the specific liquid elastomer, the present invention provides a rubber sheet having a thickness of 500 μm or less. ... Bridgestone Corporation

05/07/15 / #20150123327

Vibration damping device

A vibration damping device includes: a cylindrical first attachment member and a second attachment member; and an annular first elastic body and an annular second elastic body, wherein, a liquid chamber is formed between the elastic bodies, elastic division walls that divide the liquid chamber into a plurality of pressure receiving liquid chambers are arranged, wherein the elastic division wall is joined to the first elastic body, and is also in abutment with the second elastic body, wherein the second attachment member is divided in the axial direction into: a first divided body to which an inner peripheral edge portion of the first elastic body is joined; and a second divided body to which an inner peripheral edge portion of the second elastic body is joined, and wherein the inner peripheral edge portions of the elastic bodies are located side by side in the axial o direction.. . ... Bridgestone Corporation

05/07/15 / #20150122402

Method and system for producing a tyre tread with lugs

A method of producing a tyre tread with lugs; the tread having a tread base, and a number of lugs projecting upwards from the tread base; and the method including the steps of: preparing a green-rubber blank tread thinner at the sides and thicker at the centre to define a raised centre portion; applying green-rubber blocks to the areas of the blank tread where the lugs are to be formed, which blocks rest centrally against the raised centre portion; and curing the blank tread, together with the blocks, in a curing mold negatively reproducing the pattern of the tread.. . ... Bridgestone Corporation

05/07/15 / #20150122393

Pneumatic tire for motorcycle

The present invention aims at providing a pneumatic tire for a motorcycle, capable of improving steering stability and wear resistance in a turning situation with maintaining good turning performance achieved by a relatively wide auxiliary belt layer. Specifically, the present invention provides a pneumatic tire for a motorcycle, characterized in that: the auxiliary belt layer is sectioned into a middle area am overlapping a region where the belt layer is provided and respective side areas as each extending beyond the region where the belt layer is provided; the cords in the middle area am extend at an inclination angle θm in the range of 70° to 90° with respect to the tire circumferential direction; and the cords in each side area as extend, in at least a portion of the side area, at an inclination angle θs different from the inclination angle θm with respect to the tire circumferential direction.. ... Bridgestone Corporation

05/07/15 / #20150122392

Pneumatic tire

A pneumatic tire with improved noise performance while preserving the steering stability and rolling resistance includes, on radially outer side of the crown portion of a carcass, an inclined belt consisting of inclined belt layer(s) having cords inclined at an angle of 35° to 90° relative to the tire circumferential direction, a circumferential belt consisting of circumferential belt layer(s) having cords extending along the circumferential direction, and a tread on radially outer side of the circumferential belt. The circumferential belt includes a high rigidity region across the tire equator wherein the circumferential rigidity per unit width is higher at any location thereof than at any location in the remaining regions. ... Bridgestone Corporation

05/07/15 / #20150122006

Structure for attaching electronic component to inner surface of pneumatic tire

A structure 11 for attaching an electronic component to the inner surface of a pneumatic tire includes: a case 13 which has a bottom plate 18, a side wall 19, and a lid 20 and in which the electronic component is mounted inside an inner space defined by these; and a rubber patch 12 disposed between the case 13 and the inner surface of the pneumatic tire. The rubber patch 12 has a bottom surface 14 to be attached to the inner surface of the pneumatic tire, and a front surface 15 provided on the opposite side from the bottom surface. ... Bridgestone Corporation

04/30/15 / #20150119516

Method of producing a rubber compound comprising silica

A method of producing a rubber compound containing silica, the method including a step of dispersing the silica in a polymer base, and a following step of mixing the previously formed mixture with curing agents. The step of dispersing the silica in the polymer base includes the following sequence of operations: soaking the polymer base in a liquid silica precursor to form a swollen polymer; —adding the swollen polymer to an organic solvent, and continually stirring the swollen polymer solution; —adding water and a silica synthesizing catalyst to the swollen polymer solution; —precipitating a polymer gel matrix by adding a precipitating agent; —separating and washing the precipitated polymer gel matrix.. ... Bridgestone Corporation

04/30/15 / #20150119496

Method of producing wet master batch, wet master batch, rubber composition, and solid-liquid separating and dehydrating apparatus for wet master batch production

Provided is a method of producing a wet master batch, including the step of: solid-liquid separating and dehydrating a coagulum slurry obtained by mixing a rubber latex with a carbon black slurry containing a carbon black dispersed in water and coagulating the mixture, the solid-liquid separating and dehydrating step including gravity filtering and vacuum filtering the coagulum slurry on a filtration filter and then pressurizing, by means of a pressurizer, the coagulum slurry on the outer peripheral surface of a drum, to thereby pressure dehydrate the coagulum slurry. Also provided is a solid-liquid separating and dehydrating apparatus for wet master batch production, which includes: a filtration filter; a filtration portion; a drum; and a pressurizer.. ... Bridgestone Corporation

04/30/15 / #20150119162

Golf club

A golf club includes a shaft; a head mounted to the tip end of the shaft; a grip mounted to the butt end of the shaft; a first vibration damping member arranged on the head side of the shaft; and a second vibration damping member arranged on the grip side of the shaft. The first range of the shaft in which the first vibration damping member is arranged includes a position of the shaft corresponding to the top end of the hosel of the head and has a length of 25 to 250 mm in the longitudinal direction of the shaft. ... Bridgestone Corporation

04/30/15 / #20150115562

Systems and methods for automated air suspension pressure drop

Various systems and methods for automated air suspension pressure drop are disclosed.. . ... Bridgestone Corporation

04/30/15 / #20150114539

Tire

A tire includes a circular tire frame body formed of a resin-containing material. The resin material has a sea-island structure including a sea phase constituted by a first resin material and an island phase constituted by a second resin material, and the island phase is harder than the sea phase.. ... Bridgestone Corporation

04/30/15 / #20150114538

Pneumatic tire

The present invention includes a run-flat tire comprising a plurality of turbulence generation ridges which extend on a surface of a tire side portion in a tire-radial direction and which are arranged at a pitch in a tire-circumferential direction and relationship si>so is satisfied. Si is the sum of sidewall areas of all the turbulence generation ridges located at the inner side, in the tire-radial direction, of a maximum width position of the pneumatic tire. ... Bridgestone Corporation

04/23/15 / #20150112021

Method for producing polymerization catalyst composition, polymerization catalyst composition, method for producing polymer composition, and polymer composition

A method for producing a polymer containing silica that does not involve long kneading time, and a polymer composition having an intended low heat generation property. A polymerization catalyst composition is produced by mixing and aging a second element and a third element, and then adding a first element to the mixture to react the first element with the mixture. ... Bridgestone Corporation

04/23/15 / #20150107755

Method and system for manufacturing a tyre tread with lugs

A method and system for manufacturing a tyre tread with lugs, the tread having a tread base, and a number of lugs projecting upwards from the tread base; the method having the steps of: preparing a green-rubber blank tread of constant thickness; applying rubber blocks to the areas of the blank tread where the lugs are to be formed, each block varying lengthwise in cross section, so it is thinner at the centre and thicker at the side; and curing the blank tread, together with the blocks, in a curing mold negatively reproducing the pattern of the tread.. . ... Bridgestone Corporation

04/23/15 / #20150107741

Tire

A tire 1 includes plural land portions 40 formed on a tread portion 10. The plural land portions 40 are segmented by a circumferential direction groove 30 extending in a tire circumferential direction l and a width direction groove 20, or segmented by an end portion 10e of the tread portion 10 in the tire width direction w and the width direction groove 20. ... Bridgestone Corporation

04/23/15 / #20150107737

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

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

04/16/15 / #20150102521

Golf ball manufacturing method

A method of manufacturing golf balls having a core and a cover of at least one layer encasing the core includes, when molding the cover, blending a thermal antioxidant into the cover stock in a plurality of divided portions. This method is able to minimize deterioration and discoloration of the cover stock, enabling golf balls of stable quality to be obtained. ... Bridgestone Corporation

04/16/15 / #20150101901

Anti-vibration device for vehicle

A vehicular antivibration device includes a torque rod and an actuator. The torque rod is connected at a first end to a vehicle body and connected at a second end to a vibration source. ... Bridgestone Corporation

04/16/15 / #20150101728

Tire

A tire including a circular tire frame formed of a material containing a resin, the material including a sea/island structure including a sea phase constituted by a first resin material and an island phase constituted by a second resin material that is softer than the sea phase.. . ... Bridgestone Corporation

04/16/15 / #20150101726

Tire innerliner

A method of preparing a green tire innerliner, the method comprising mixing one or more vulcanizable rubbery polymers, less than 0.75 parts by weight zinc oxide, less than 0.75 parts by weight magnesium oxide, and less than 0.75 parts by weight sulfur, per 100 parts by weight rubber, to form a vulcanizable mixture and extruding the mixture to form a green tire innerliner.. . ... Bridgestone Corporation

04/09/15 / #20150099852

Aminosilane initiators, functionalized polymers prepared therefrom and related processes

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

04/09/15 / #20150097419

Rubber crawler

A rubber crawler includes a rubber belt, a main cord layer that is incorporated within the rubber belt and includes a main cord extending around the crawler circumferential direction, a bias cord layer that is incorporated further to the crawler circumferential outside than the main cord layer and is configured from bias cords extending at an angle with respect to the crawler circumferential direction, a bias cord layer that is interposed between the bias cord layer and the main cord layer, and is configured from bias cords extending at an angle with respect to the crawler circumferential direction so as to intersect the first bias cords, and a reinforcement cord layer that is interposed between the bias cord layer and the bias cord layer, and is configured from reinforcement cords extending in the crawler width direction.. . ... Bridgestone Corporation

04/02/15 / #20150094390

Sealing material

Provided is a sealing material having low hardness, low density, and excellent sealing properties. A sealing material, made by vulcanizing and foaming a blend containing: a thermoplastic resin; a foaming agent; a vulcanizing agent; and a rubber component containing a rubber copolymer of ethylene, a non-conjugate diene, and an α-olefin with 3 or more carbon atoms; wherein the blend contains 2 to 4 mass parts of stearic acid and 5 to 7 mass parts of cao in 100 mass parts of the rubber component, and the 50% compressive stress of the sealing material is 100 kpa or less.. ... Bridgestone Corporation

04/02/15 / #20150094385

Rubber foam composition and rubber foam using same

Provided are a rubber foam composition from which a rubber foam having low metal corrosive properties, low fogging properties and reduced odor and causing no poor foaming or tackiness of the rubber foam surface can be obtained, and a rubber foam using the same. The rubber foam composition comprises: a rubber component including a copolymer rubber of ethylene, an α-olefin having three or more carbon atoms and a non-conjugated diene, a vulcanizing agent, and a foaming agent, the composition being characterized in that the vulcanizing agent comprises α,α′-di(t-butylperoxy)diisopropylbenzene and a quinoid-based vulcanizing agent, and characterized by being substantially free of urea-based foaming auxiliary, and the rubber foam uses the same.. ... Bridgestone Corporation

04/02/15 / #20150091372

Rubber crawler

A rubber crawler includes a rubber belt, a main cord layer that is incorporated within the rubber belt and includes a main cord configured from plural twisted strands covered with rubber, the main cord extending around the crawler circumferential direction, and a bias cord layer incorporated within the rubber belt at the crawler circumferential outside of the main cord layer configured by at least one bias ply and configured from at least one bias ply that is formed from a plurality of bias cords extending at an angle with respect to the crawler circumferential direction, disposed side-by-side around the crawler circumferential direction and covered in rubber such that bias cords of the bias ply at the circumferential outermost side of the crawler are, as viewed from the crawler circumferential outside, angled toward an opposite side, with respect to the crawler circumferential direction, from the angled side of the strands.. . ... Bridgestone Corporation

04/02/15 / #20150090384

Pneumatic tire

The present invention has an object of providing a pneumatic tire having a tread pattern capable of providing both excellent drivability and a high partial wear resistance. The pneumatic tire of the present invention includes, in a tread surface, a compound groove partitioned into a first groove portion and a second groove portion by a first groove side and a second groove side, the first groove side having an oblique side portion diagonally disposed relative to a tire circumferential line in plan view, the second groove side intersecting with the oblique side portion of the first groove side at an acute angle in plan view, in which: the first groove portion and the second groove portion both have a groove depth that gradually reduces in an extending direction of the groove toward an intersection between the oblique side portion and the second groove side; and a groove wall extending from the first groove side is formed as a tapered surface mildly-sloped toward a groove bottom on the intersection side when viewed in the groove transverse direction. ... Bridgestone Corporation

04/02/15 / #20150090380

Air power feature for a tire or wheel

Provided is an apparatus comprising an air power feature engaged with a tire or an air power feature engaged with a wheel.. . ... Bridgestone Corporation

04/02/15 / #20150090023

Method and apparatus for detecting uneven wear on tire

The present invention provides a method and apparatus for accurately detecting shoulder edge wear without impairing the durability of a tire. The method includes extracting an acceleration waveform from output signals of an acceleration sensor (11) disposed on the inner surface of a tire tread by an acceleration waveform extracting means (12), extracting either a pre-leading-end region or a post-trailing-end region of the acceleration waveform by an acceleration waveform separating means (13), obtaining a frequency spectrum by analyzing the extracted acceleration waveform by a frequency analysis means (14), calculating a frequency band value, which is the magnitude of acceleration in a specific frequency band, from the frequency spectrum by a frequency band value calculating means (15), and detecting an uneven wear in the edge of the tire shoulder from the magnitude of the calculated frequency band value by a shoulder edge wear detecting means (17).. ... Bridgestone Corporation

03/26/15 / #20150083300

Heavy duty tire

The present invention provides a heavy duty tire, comprising: a carcass; a belt constituted of a circumferential belt including at least one circumferential belt layer and a slant belt including at least one slanted belt layer, each belt layer being made of cords coated with belt coating rubber; and a cushion rubber provided on the outer side in the tire width direction of the belt layers, characterized in that: the cushion rubber has a belt adjacent portion adjacent to the belt and a main body portion adjacent to the belt adjacent portion; and provided that e1′, e2′ and e3′ represent storage modulus values of the belt adjacent portion of the cushion rubber, the main body portion of the cushion rubber, and the belt coating rubber, respectively, e1′, e2′ and e3′ satisfy relationship e2′<e1′≦e3′.. . ... Bridgestone Corporation

03/26/15 / #20150083296

Tire with toroidal element

A tire includes a tread formed in a crown region of the tire and sidewall regions extending from the crown region to bead areas. The tire further includes a toroidal element extending across a crown region of the tire, and further extending along at least a portion of each sidewall region of the tire. ... Bridgestone Corporation

03/19/15 / #20150080525

Rubber composition and tire containing rubber composition

. . . . Provided is a rubber composition including a rubber component. The rubber component contains at least a polymer that is a synthesized polyisoprene or an isoprene copolymer and that has 20% or less gel fraction.. ... Bridgestone Corporation

03/19/15 / #20150075694

Pneumatic tire

A pneumatic tire, comprising: a carcass provided in a toroidal shape across a pair of bead cores; a bead filler provided on the outer side in the tire radial direction of each bead core; and a rim guard to protrude on the outer side in the tire width direction for rim protection, wherein a contour of a portion of the rim guard has radius of curvature in the range of 5 mm to 40 mm in a widthwise cross section of the tire, and provided that “1csh” represents a distance in the tire radial direction between the innermost end and the outermost end of the carcass, a distance in the tire radial direction between the outermost end in the tire width direction of the rim guard and the outermost end in the tire radial direction of a bead filler is in the range of −0.2csh to 0.05csh.. . ... Bridgestone Corporation

03/19/15 / #20150075693

Tire structure for externally mounted device

A method of mounting an object on a tire includes providing a tire having a sidewall, wherein the sidewall includes a mounting portion configured to receive an object. The method further includes mounting the object on the mounting portion of the sidewall, such that the object is visible without extending outwardly beyond the mounting portion.. ... Bridgestone Corporation

03/12/15 / #20150073757

System and method for determining statistical distribution of a rolling tire boundary

A system and method for modeling a distribution of a tire footprint boundary (202) include inputting a finite element model of a tire rolling against a road surface described by discrete road surface coordinates into a finite element analysis system (100). A finite element analysis simulation of tire model rolling against the road surface for a plurality of time increments is performed. ... Bridgestone Corporation

03/12/15 / #20150073756

System and method for steady state simulation of rolling tire

An apparatus and method are disclosed for modeling at least a portion of a rolling tire (200). A finite element model of at least a portion of a tire (200) rolling against a tire contacting surface (202, 506, 602) is input into a finite element analysis system (100). ... Bridgestone Corporation

03/12/15 / #20150073166

Modifying agent, method for producing modified conjugated diene polymer using modifying agent, and modified conjugated diene polymer

Provided are a modifying agent obtained by subjecting a silicon-containing compound having a protected primary amino group and at least two hydrolyzable groups to complete condensation, a method of producing a modified conjugated diene-based polymer, a modified conjugated diene-based polymer obtained by the production method, a rubber composition using the polymer, and a pneumatic tire. The modified conjugated diene-based polymer has excellent low heat generating property and abrasion resistance, and the rubber composition is obtained by using the modified conjugated diene-based polymer and the pneumatic tire is obtained by using the rubber composition.. ... Bridgestone Corporation

03/12/15 / #20150073113

Processes for the removal of rubber from tks plant matter

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

03/12/15 / #20150073067

Rubber composition, crosslinked rubber composition and tire

The present invention provides a rubber composition that can offer excellent abrasion resistance when applied to a tire member such as a tread, without deteriorating rolling resistance. To solve the problem, a rubber composition according to the present invention contains a rubber component, hydrous silicate, and a surfactant, in which the hydrous silicate is modified by the surfactant before being kneaded with the rubber component.. ... Bridgestone Corporation

03/12/15 / #20150072034

Tread strip curing station

A curing station for curing a tread strip, having a flat curing mold; a gripper which grips a portion of the cured tread strip inside the curing mold; an actuating device which, at the end of the curing process, moves the gripper to gradually extract the cured tread strip from the curing mold; and a guide device which, as the cured tread strip is extracted, is positioned over the curing mold, and has a main roller, about which the extracted part of the cured tread strip winds, and a secondary roller smaller in diameter than, and positioned parallel to and alongside, the main roller.. . ... Bridgestone Corporation

03/05/15 / #20150065673

Preparation of functional polymers using phosphide initiators

A method of preparing a polymer, the method comprising: metalating an organophosphine compound in the substantial absence of monomer to form a metalated organophosphine; and introducing the metalated organophosphine to monomer including conjugated diene monomer to form a reactive polymer.. . ... Bridgestone Corporation

03/05/15 / #20150065593

Polyurethane foam for seat pad

Polyurethane foam for seat pad prepared by foam-molding a foaming liquid containing (a) a polyol component and (b) a polyisocyanate component. Polyol component (a) includes, based on polyol component, 30% to 55% by mass of (a-1) a polyether polyol which is a block copolymer obtained through ring-opening polymerization of ethylene oxide (eo) and propylene oxide (po), and has a molar ratio of repeating units derived from eu to repeating units derived from po of 5/95 to 25/75 and a number average molecular weight of 6,000 to 8,000. ... Bridgestone Corporation

03/05/15 / #20150065268

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

03/05/15 / #20150064059

Process for producing cast-metal object, and cast-metal object

Occurrence of a casting defect in a cast-metal object is suppressed, and a crystal structure of the cast-metal object is made fine. When a cast-metal object is to be produced by using a casting mold, a metal material generating a free crystal during solidification is melted first. ... Bridgestone Corporation

03/05/15 / #20150059956

Tire

A tire including a circular tire frame formed of a resin material that includes a thermoplastic resin and fibers.. . ... Bridgestone Corporation

03/05/15 / #20150059955

Tire

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

03/05/15 / #20150059942

Pneumatic tire

Provided is a pneumatic tire used with a specified rotation direction, including a tread, a pair of sidewalls extending continuously from the tread inward in a tire radial direction, a pair of beads continuous with the sidewalls inward in the tire radial direction, and at least one ridge on a buttress surface. The buttress surface extends from a tread edge of a tread surface formed on the tread to the sidewall. ... Bridgestone Corporation

02/26/15 / #20150057951

Scalable vehicle models for indoor tire testing

. . A method for reducing vehicle bias when testing a tire for use with a market segment of vehicles by creating a vehicle model that is scalable by vehicle weight. A market segment of vehicles is defined, at least one of a vehicle model parameter is defined, data is collected for the at least one vehicle model parameter from at least one vehicle in the market segment, the at least one vehicle model parameter is characterized through regression analysis as a function of total weight of a scalable vehicle model, the scalable vehicle model parameter is applied to a multibody vehicle dynamics simulation, at least one maneuver is applied to the scalable vehicle model, and the tire load histories generated by the multibody vehicle dynamics simulation are provided to a tire test machine to obtain tire wear data representative of the vehicles in the market segment.. ... Bridgestone Corporation

02/26/15 / #20150057367

Micro-particles containing a 3-d polymeric structure

Micro-sized particles having a polymeric structure of cells are provided. Also provided is a method of producing micro-sized particles having a polymeric structure comprising: (1) forming a homogenous solution by heating a mixture of a high molecular weight polymer and a low molecular weight material, wherein said low molecular weight material makes up at least about 50% by weight of the homogenous solution, (2) forming a dispersed solution by dispersing the homogenous solution formed in step (1) into an inert material, (3) cooling the dispersed solution to cause the high molecular weight polymer to phase separate from the low molecular weight material, (4) forming solid particles comprised of said low molecular weight material trapped inside a structure of cells of said high molecular weight polymer, and (5) removing the solid particles from the dispersed solution.. ... Bridgestone Corporation

02/26/15 / #20150056398

Tire

A tire includes a circular tire frame formed from a resin material, in which the resin material has a tear strength of 10 n/mm or greater.. . ... Bridgestone Corporation

02/26/15 / #20150053323

Tire

A tire including a circular tire frame formed of a resin material, and a metal reinforcing cord member wound on the outer circumference of the tire frame, wherein at least a portion of the metal reinforcing cord member is covered by a covering mixture including at least an olefin-based thermoplastic resin and a thermoplastic resin other than the olefin-based thermoplastic resin.. . ... Bridgestone Corporation

02/26/15 / #20150053318

Agricultural tire tread

An agricultural tire has an equatorial plane separating first and second sides. First and second inner sixths of the treads extend between the equatorial plane and circumferential reference planes disposed axially one-sixth of a tread width on either side of the equatorial plane. ... Bridgestone Corporation

02/19/15 / #20150050506

Rubber composition, method for manufacturing rubber-metal composite body, rubber-metal composite body, tire, industrial belt, and rubber crawler

A rubber-metal composite body constituted of a rubber composition and a metal material embedded therein is conventionally used in a rubber article requiring high strength in order to reinforce rubber to improve strength and durability thereof. The present invention provides a rubber composition having good initial adhesive properties and good heat resistant adhesive properties with respect to a metal material, mainly for use in the rubber-metal composite body as described above. ... Bridgestone Corporation

02/19/15 / #20150049088

Ground compaction images

A method is provided for generating a ground compaction image. A pressure sensing panel is placed on a relatively rigid planar supporting surface. ... Bridgestone Corporation

02/19/15 / #20150048672

Rubber crawler

A rubber crawler has: an endless rubber belt that is entrained about plural wheels; plural rubber projections that are disposed on the rubber belt and spaced apart from one another in a crawler circumferential direction, project toward an inner peripheral side of the rubber belt, and come into contact with the wheels to limit the movement of the wheels in a crawler width direction; and a low-hardness rubber portion that configures part of an inner peripheral surface of the rubber belt, is disposed between mutually adjacent rubber projections, and is formed by a rubber having a lower hardness than the rubber projections.. . ... Bridgestone Corporation

02/12/15 / #20150045463

Hollow nano-particles and method thereof

. . The invention provides a hollow nano-particle comprising a crosslinked shell and a void core; and a preparation method thereof. The hollow nano-particle may be used in rubber composition, tire product, and pharmaceutical delivery system etc.. ... Bridgestone Corporation

02/05/15 / #20150038646

Composition for producing sheet for forming laminate, process for producing the same, and sheet for forming laminate

To provide a composition for producing a sheet for forming a laminate, which contains an ethylene-vinyl acetate copolymer and a polyethylene resin, by which the above-described problems in the width of the temperature range in which a processable viscosity range is obtained and the like are improved and which excels in processing properties such as a film-forming property when producing a sheet, and a sheet for forming a laminate using this. A composition for producing a sheet for forming a laminate, which contains an ethylene-vinyl acetate copolymer and polyethylene, wherein the composition has a sea-island structure in which the ethylene-vinyl acetate copolymer is a sea phase and the polyethylene is an island phase, and a sheet for forming a laminate using this.. ... Bridgestone Corporation

02/05/15 / #20150038266

Multi-piece solid golf ball

In a multi-piece solid golf ball having a core with a two-layer construction consisting of an inner layer and an outer layer and having also, over the core, a cover of two or more layers that includes an intermediate layer and an outermost layer, the core inner layer is formed primarily of a specific thermoplastic elastomer, the core outer layer is formed of a rubber material, and both the hardness relationship between the core inner layer and the core outer layer and the hardness relationship between the intermediate layer and the outermost layer are optimized. This golf ball allows even amateur golfers who do not have a high head speed to impart sufficient deformation to the ball and thus achieve an excellent flight performance and a comfortable feel at impact, and also has an excellent durability.. ... Bridgestone Corporation

02/05/15 / #20150038249

System, method, and apparatus for measuring golf club deformation

Provided is a system for measuring golf club deformation that can easily measure golf club deformation during a golfer's golf swing as usual. A measurement system (1) according to the present invention is provided with an image pickup apparatus (4), attached to a golf club (3) and facing a direction that includes at least one identifier attached to the golf club (3) for specification of a position on the golf club (3), and with a measurement apparatus (2) that measures the golf club deformation based on position information of the at least one identifier, the position information being acquired from an image of the golf club captured by the image pickup apparatus (4) during a swing.. ... Bridgestone Corporation

02/05/15 / #20150037582

Continuous process for coating steel wire cord

Continuous processes for producing a coated steel wire are provided. The processes entail wetting steel wire in an aqueous solution comprising at least 95% water and 0.01 to 5% weight/weight of the carboxylic acid salt of an alkoxy modified silsesquioxane of formula (i), evaporating water from the wet coated steel wire to form a mostly-dry coated steel wire and then heating (one or more steps) the mostly-dry coated steel wire at a temperature of 50-240° c. ... Bridgestone Corporation

01/29/15 / #20150031845

Process for producing polydienes

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

01/29/15 / #20150031821

Rubber composition and method for producing rubber composition

The present invention provides a rubber composition comprising, as blended, a rubber component (a), an amino acid derivative (b) and a filler containing an inorganic filler (c), and further containing, as incorporated therein, at least one selected from sulfur and a sulfur compound. The vulcanization rate of the rubber composition is accelerated and the low-heat-generation property thereof is excellent.. ... Bridgestone Corporation

01/29/15 / #20150031809

Anti-vibration rubber composition, crosslinked anti-vibration rubber composition, and anti-vibration rubber

Provided is a vibration-insulating rubber composition and a crosslinked vibration-insulating rubber composition which are excellent in low dynamic-to-static modulus ratio, elongation fatigue resistance, low temperature characteristics, and processability, and a vibration-insulating rubber using the vibration-insulating rubber composition and the crosslinked vibration-insulating rubber composition. The vibration-insulating rubber composition of the present invention includes: a rubber component having a conjugated diene compound/non-conjugated olefin copolymer, and a non-conjugated diene-based polymer; a vulcanizing agent having a bismaleimide compound; and n-phenyl-n-(trichloromethylthio)benzenesulfonamide.. ... Bridgestone Corporation

01/29/15 / #20150031792

Silica-filled rubber composition and method for making the same

Disclosed is a method of preparing a rubber composition comprising the steps of (a) blending in at least one preparatory mixing step at least one natural or synthetic rubbery polymer, a silica filler, a silica coupling agent, and at least one vulcanization accelerator; and (b) subsequently blending therewith in a final mixing step a sulfur curative, wherein the average glass transition temperature of the polymer(s) is −55° c. Or less.. ... Bridgestone Corporation

01/29/15 / #20150031789

Rubber tyre compound

A rubber tyre compound having a polymer base; a curing system, which cures the polymer base by means of heating; and basalt fibres with a length/diameter ratio ranging from 20 to 2000.. . ... Bridgestone Corporation

01/29/15 / #20150027609

Tire mold and pneumatic tire

Provided are: a tire mold including a bead portion molding surface for molding the bead portion of the tire, the bead portion molding surface having a ridge molding part including a recessed groove extending in the mold radial direction, the ridge molding part being formed in a flange contact portion molding region for molding a rim-flange contact portion of the tire; and a pneumatic tire, in which a bead filler has the tire radial direction outer end positioned more inward in the tire radial direction relative to the rim line position, and a ridge forming portion including a ridge extending in the tire radial direction is formed on the outer surface of the bead portion, the ridge forming portion being positioned in the rim flange contact portion.. . ... Bridgestone Corporation

01/22/15 / #20150025214

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

01/22/15 / #20150025173

Polymer, rubber composition containing polymer, crosslinked rubber composition obtained by crosslinking rubber composition, and tire having crosslinked rubber composition

Provided are: a polymer capable of providing a crosslinked rubber composition with improved durability (i.e., breaking resistance, abrasion resistance, and crack growth resistance) and a method for producing the same, a rubber composition containing the polymer, a crosslinked rubber composition obtained by crosslinking the rubber composition, and a tire having the crosslinked rubber composition. The polymer is either a synthesized polyisoprene or an isoprene copolymer, and contains a residual catalyst in an amount of 300 ppm or less.. ... Bridgestone Corporation

01/22/15 / #20150021813

Tire mold, tire, and tire manufacturing method

The tread surface of a tire according to the present invention is molded with a tire mold having a tread molding surface, and at least a portion of the tread molding surface is formed by projecting spherical projection material having a predetermined sphericity and causing the spherical projection material to collide.. . ... Bridgestone Corporation

01/22/15 / #20150021804

Mold, method for manufacturing molded foam body, and molded foam body

A mold that: makes it possible to manufacture a molded foam body wherein a reinforcing member extends to a portion of the outer face of the molded body main body that corresponds to a parting line in the inner face of the cavity of the mold; and prevents molding problems stemming from the reinforcing member getting into the aforementioned parting line. Also: a method for manufacturing a molded foam body using the aforementioned mold; and a molded foam body manufactured thereby. ... Bridgestone Corporation

01/22/15 / #20150020946

Tire

A tire including a tire frame formed from a resin material in a ring shape, wherein the resin material has a bending elastic modulus of from 100 mpa to 1000 mpa.. . ... Bridgestone Corporation

01/22/15 / #20150020943

Low-metal tire

A tire includes a carcass ply and at least one annular structure associated with the carcass ply. The tire further includes a metal-free circumferential belt region comprising a first metal-free belt ply and a second metal-free belt ply. ... Bridgestone Corporation

01/22/15 / #20150020939

Tire mold, tire, and tire manufacturing method

The tread surface of a tire according to the present invention is molded with a tire mold having a tread molding surface, and at least a portion of the tread molding surface is formed by projecting spherical projection material having a predetermined sphericity and causing the spherical projection material to collide.. . ... Bridgestone Corporation

01/22/15 / #20150020938

Pneumatic radial tire

Provided is a pneumatic radial tire which is configured so that circumferential main grooves to be provided on a tread surface are suitably defined in shape.. . ... Bridgestone Corporation

01/22/15 / #20150020937

Pneumatic tire

An outer side rib 46 is formed at a side relative to the plural circumference direction main grooves that is at the vehicle outer side when the tire is mounted at a vehicle. A land portion of the outer side rib 46 is continuous in the tire circumference direction. ... Bridgestone Corporation

01/15/15 / #20150018495

Tire

A tire including a circular tire frame formed from a resin material, wherein the resin material has a loss coefficient (tan δ) peak temperature of 30° c. Or lower.. ... Bridgestone Corporation

01/15/15 / #20150018488

Polymers functionalized with lactones or thiolactones containing a protected amino group

A method for preparing a functionalized polymer, the method comprising the steps, of: (i) polymerizing monomers to form a reactive polymer, and (ii) reacting the reactive polymer with a lactone or thiolactone that contains a protected amino group.. . ... Bridgestone Corporation

01/15/15 / #20150018459

Processes for recovering rubber from aged briquettes and aged briquettes containing plant matter from non-hevea plants

Provided herein are organic solvent-based processes for the removal of rubber from aged briquettes made from compressed plant matter (briquettes) of non-hevea plants. Also provided are aged briquettes made from the compressed plant matter of non-hevea plants where the briquettes have been aged for either various time period after formation and the rubber within the briquette has retained its a molecular weight to within a specified range.. ... Bridgestone Corporation

01/15/15 / #20150018125

Multi-piece solid golf ball

In a multi-piece solid golf ball which has a core with a two-layer structure composed of an inner layer and an outer layer, and has over the core a cover of two or more layers that includes an intermediate layer and an outermost layer, the core inner layer is formed primarily of a specific thermoplastic elastomer, the core outer layer is formed of a rubber composition consisting primarily of a rubber material, and the hardness relationship between the core inner layer and the core outer layer and the hardness relationship between the intermediate layer and the outermost layer have been optimized. This golf ball has an excellent flight performance on full shots with a driver (w#1) and also has good controllability in the short game and a good durability.. ... Bridgestone Corporation

01/15/15 / #20150017446

Core-first nanoparticle formation process, nanoparticle, and composition

A method is provided for synthesizing a core-shell nanoparticle that includes the following steps: providing a polymeric seed (in a solvent) that includes mono-vinyl monomer cross-liniked with a cross-linking agent to form the core of the nanoparticle, the core has an average diameter of from about nanometers to about 10,000 nanometers, and the core has polymer chains with living ends; adding a stabilizer to stabilize the seed and prevent the seed from precipitating out of solution; and grafting a shell species onto the living ends of the core to form the shell of the nanoparticle. A core-first synthesized nanoparticle, along with a rubber composition and tire product are also provided.. ... Bridgestone Corporation

01/15/15 / #20150013871

Compression molded green rubber component and method for manufacturing the same

Various embodiments of a compression molded green rubber component, and methods for manufacturing the same, are disclosed.. . ... Bridgestone Corporation

01/15/15 / #20150013868

Tire

A circumferential recess is formed on the outer surface of a tire side section, the circumferential recess being depressed inward in a tread width direction and extending in a tire circumferential direction. In a cross section along the tread width direction of the tire and the tire radial direction, a rim-side outer surface formed in an area from a rim separation point, which is the outermost point in the tire radial direction that is in contact with a rim flange, to an inner end of the circumferential recess in the tire radial direction, is formed along a first arc curve having a center of a curvature radius on the inside in the tread width direction. ... Bridgestone Corporation

01/15/15 / #20150013865

Pneumatic tire

A pneumatic tire comprising one or more sipes having a depth (d) and, as seen in a widthwise section of the sipe, a perpendicular portion and a bend portion. The bend portion has, a first sub-bend point in a depth region of d/2-d/7, a main-bend point in a depth region of d/4-3d/4, and a second sub-bend point a depth region of d/2-6d/7, forming first and second inclined sections between the bend points. ... Bridgestone Corporation

01/15/15 / #20150013864

Tire with pre-formed tread and method of making same

A green tire includes a carcass and a pre-shaped tread. The carcass includes a pair of annular beads and at least one body ply extending between the pair of annular beads. ... Bridgestone Corporation

01/15/15 / #20150013863

Tire with pre-formed tread and method of making same

Methods of making tires with features such as ribs, lugs, or tread blocks include shaping at least one feature onto an uncured tire tread prior to vulcanization. One aspect of these methods may include shaping a feature onto the tread while the tread is associated with the tire. ... Bridgestone Corporation

01/08/15 / #20150011710

Functionalized polymer

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

01/08/15 / #20150011701

Polymer and method for producing same, rubber composition containing polymer, and tire having rubber composition

The polymer of the present invention is a synthesized polyisoprene or an isoprene copolymer. The polymer has a number average molecular weight (mn) of 1.5 million or more when measured by using gel permeation chromatography (gpc).. ... Bridgestone Corporation

01/08/15 / #20150011683

Keratin in rubber applications

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

01/08/15 / #20150010737

Decorative tire and method for producing same

Provided is a decorative tire in which an ink composition including a colorant is directly applied onto the tire surface in order to improve the degree of flexibility in design. This decorative tire has a decorative printed layer formed on the tire surface, the decorative printed layer being a cured film of an active-energy-ray-curable ink composition including a colorant. ... Bridgestone Corporation

01/08/15 / #20150007918

Pneumatic tire

A pneumatic tire adapted to effectively suppress temperature rise of a tread portion during loaded rolling of the tire, and sufficiently suppress failure of the tread portion due to the temperature, rise. The tread portion of the pneumatic tire extends between both tread ends and has a tread surface with lug grooves. ... Bridgestone Corporation

01/08/15 / #20150007915

Tire cavity air flow features

Provided is a pneumatic tire comprising an annular interior surface having a circumference, and an air flow feature. The annular interior surface is adapted for engagement with a wheel, defines an interior surface circumferential direction along the annular interior surface in the direction of the circumference, defines an interior surface meridinal direction tangent to the annular interior surface and perpendicular to the direction of the circumference, and defines an interior surface normal direction mutually perpendicular to both other directions. ... Bridgestone Corporation

01/08/15 / #20150007888

Solar cell sealing film and solar cell using the same

The present invention provides a solar cell sealing film in which the shrinkage is prevented when heated. The solar cell sealing film 13a, 13b comprises a resin mixture of an ethylene-vinyl acetate copolymer and polyethylene, and an organic peroxide. ... Bridgestone Corporation

01/01/15 / #20150005433

Rubber composition for conveyor belts, rubber for conveyor belt covers, and conveyor belt

. . Rubber composition for conveyor belts containing (a) a rubber component that contains a styrene-butadiene rubber mixture having a mean styrene content of from 28 to 35% by mass, which contains one or more types of styrene-butadiene rubber having a styrene content of from 20 to 25% by mass and one or more types of styrene-butadiene rubber having a styrene content of from more than 25 to 50% by mass, and at least one selected from butadiene rubber and natural rubber in a specific ratio, (b) silica, (c) resin, and (d) specific carbon black in a specific ratio; a rubber for conveyor belt covers, formed by using the rubber composition; and a conveyor belt cover provided by using the rubber composition.. . ... Bridgestone Corporation

01/01/15 / #20150005418

Coloured tyre portions

A coloured tyre portion having a polymer base with added pigments for producing the desired colour, and an added optical whitener. Alternatively, the optical whitener is added to a dye deposited on a highly impermeable barrier layer, in turn deposited on the part of the tyre for colouring.. ... Bridgestone Corporation

01/01/15 / #20150004335

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

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

01/01/15 / #20150004090

Method and apparatus for producing silicon fine particles

A method for producing silicon fine particles of the present invention comprises: a step a of heating a precursor obtained by drying a mixture containing a silicon source and a carbon source by using a heating means in an inert atmosphere in a part formed by non-carbon substances 20, a step b of rapidly cooling a gas generated by heating the precursor in the inert atmosphere in the part formed by non-carbon substances 20, wherein at least one of the silicon source and the carbon source is liquid form.. . ... Bridgestone Corporation

01/01/15 / #20150002847

Appearance inspection apparatus and appearance inspection method

An appearance inspection apparatus and an appearance inspection method for detecting a shape, surface unevenness, shine or changes in tone on the surface. The method includes steps of acquiring reflected luminance data on the sample surface by casting a slit light having an intermediate wavelength of three types of lights having different wavelengths, receiving reflected light of the slit light, acquiring surface data by casting two lights of different wavelengths other than the intermediate wavelength at a position other than the position illuminated by the slit light on the sample surface from two different directions so as to overlap two lights with each other and receiving reflected light, detecting surface unevenness from a ratio between the intensities of lights, changes in tone by combining reflected luminance data and surface data, gloss on the sample surface based on the presence or absence of surface unevenness and the changes in color tone.. ... Bridgestone Corporation

01/01/15 / #20150001754

Mold, method for manufacturing molded foam body, and molded foam body

A mold that: makes it possible to manufacture a molded foam body wherein a reinforcing member extends to a portion of an outer face of the molded body main body that corresponds to a parting line in the inner face of the cavity of the mold; and prevents molding problems stemming from the reinforcing member getting into the aforementioned parting line. Also: a method for manufacturing a molded foam body using the aforementioned mold; and a molded foam body manufactured thereby. ... Bridgestone Corporation

01/01/15 / #20150001434

Vibration-damping rubber composition, crosslinked vibration-damping rubber composition, and vibration-damping rubber

Provided is a vibration-insulating rubber composition and a crosslinked vibration-insulating rubber composition which successfully maintain basic physical properties and thermal resistance while being excellent in weather resistance and crack growth resistance, and a vibration-insulating rubber using the vibration-insulating rubber composition and the crosslinked vibration-insulating rubber composition. The vibration-insulating rubber composition of the present invention includes: a rubber component having a conjugated diene compound/non-conjugated olefin copolymer; sulfur by 0.6 parts by mass or less per 100 parts by mass of the rubber component; and a bismaleimide compound by 1 to 5 parts by mass per 100 parts by mass of the rubber component.. ... Bridgestone Corporation

01/01/15 / #20150001047

Rubber composition for conveyor belts, conveyor belt, and belt conveyor

Provided is a rubber composition for conveyor belts capable of satisfying both energy efficiency and durability. Concretely provided is a rubber composition for conveyor belts comprising (a) 100 parts by mass of a dienic polymer, and (b) from 25 to 55 parts by mass of carbon black including carbon black (b-1) having a nitrogen-adsorbing specific surface area of from 60 to 100 m2/g and a dibutyl phthalate oil absorption of less than 110 ml/100 g, and carbon black (b-2) having a nitrogen-adsorbing specific surface area of less than 60 m2/g and a dibutyl phthalate oil absorption of at least 110 ml/100 g. ... Bridgestone Corporation

01/01/15 / #20150000817

Pneumatic tire for two-wheeled motor vehicle

A two-wheeled motor vehicle pneumatic tire (10) includes: a carcass layer (14) straddling a pair of bead portions (12); an inclined belt layer (18) that is disposed at a tire radial direction outer side of a crown portion (14c) of the carcass layer (14), and that includes a plurality of cords (18a) that are inclined with respect to the tire circumferential direction; and a spiral belt layer (20) that is disposed at the tire radial direction outer side of the inclined belt layer (18), and that is formed by winding a rubber-covered cord (20a) in a spiral shape in the tire circumferential direction.. . ... Bridgestone Corporation

01/01/15 / #20150000814

Tire

A circumferential recess is formed on the outer surface of a tire side section, the circumferential recess being recessed inward in a tread width direction and extending in a tire circumferential direction. A block protruding outward in the tread width direction is formed on the inside of the circumferential recess. ... Bridgestone Corporation

01/01/15 / #20150000811

Pneumatic tire

A pneumatic tire having: a carcass including a ply main body and respective wound-up portions; and a recessed portion formed at a tire outer surface, is characterized in that: the maximum width w6 of the carcass is 120% to 135% of a distance w8 between a pair of bead heals, and the outermost end p2 in the tire width direction of the carcass is disposed within a region defined in the tire radial direction between a position corresponding to 45% of the carcass height h and a position corresponding to 60% of the carcass height in the tire-rim assembled state; and, provided that r represents a radius of curvature of the carcass at the outermost end in the tire width direction of the carcass, r/h≧0.45 in the tire-rim assembled state at the normal maximum internal pressure with no load.. . ... Bridgestone Corporation








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