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Bridgestone Corporation patents


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.

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Motorcycle tire

The motorcycle tire includes: a tread section; and side wall sections and bead sections that continuously extend on both sides of the tread section, and the rotation direction of the motorcycle tire when fitted to a motorcycle is designated. In a tread section 10, first inclined main grooves 1 of... Bridgestone Corporation

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

Polyamide-based thermoplastic elastomer and tire

A polyamide-based thermoplastic elastomer including a hard segment and a soft segment, wherein the hard segment contains polyamide 612 and the soft segment contains a polyamine.... Bridgestone Corporation

Non-pneumatic tire

A non-pneumatic tire (1) of the present invention includes an attachment body (11) attached to an axle, an outer cylindrical body (13) which surrounds the attachment body (11) from the outside in a tire radial direction, a tread portion (16) which surrounds the outer cylindrical body (13) from the outside... Bridgestone Corporation

Motorcycle tire

A motorcycle tire whose wear resistance and drainage performance are improved by refining the tread pattern, including: a tread section; side wall sections and bead sections that continuously extend on both sides of the tread section, and the rotation direction of the tire when fitted to a motorcycle is designated.... Bridgestone Corporation

Run-flat tire

A run-flat tire that includes a tread portion, sidewall portions, and bead portions. The sidewall portions being provided with a side-reinforcing rubber having a crescent-shaped cross section. At least one circumferential groove extending in a tire circumferential direction and plural rows of circumferential sipes continued in the tire circumferential direction... Bridgestone Corporation

Tire wear depth estimating method and tire wear depth estimating apparatus

A method and apparatus capable of estimating a tire wear amount even on snow-covered road surfaces accurately and reliably are provided. To that end, a differentiated acceleration waveform of a radial acceleration waveform of a tire is obtained, and an operation of calculating a leading-end differentiated peak value and a... Bridgestone Corporation

Method for producing mixture

Provided is a method for producing a mixture, comprising a mixing step for mixing a slurry prepared by dispersing a filler containing carbon black and a rubber liquid prepared by dispersing or the like a rubber component. In the above producing method, the carbon black contained in the slurry has... Bridgestone Corporation

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... Bridgestone Corporation

Hot press producing sintered product

A hot press apparatus includes a mold including: a cylindrical die, a cylindrical outer sleeve provided inside the die, and a cylindrical inner sleeve provided inside the outer sleeve; and a pair of pressing punches for pressing a sample filled into the mold. The inner sleeve has lower rigidity than... Bridgestone Corporation

Tire

In a tire in which a groove extending in a tire circumferential direction is formed in a tread part, a projection extending in a direction intersecting the tire circumferential direction is provided at a groove bottom of the groove, and the projection includes in a tread surface view of the... Bridgestone Corporation

Vibration-damping device

The present invention is a liquid-tight the vibration-damping device (10). In this vibration-damping device (10), a limiting passage (24) includes a main body passage (25) disposed inside a partition member (16), a first communication section (26) configured to communicate the main body passage (25) and a first liquid chamber (14),... Bridgestone Corporation

Polymers functionalized with n-protected hydantoin compounds

A method for preparing a functionalized polymer, the method comprising the steps of (i) polymerizing monomer to form a reactive polymer; and (ii) reacting the reactive polymer with an N-protected hydantoin compound... Bridgestone Corporation

Method for manufacturing vibration damping device

Provided is a method for manufacturing a vibration damping device including sealing liquid (L) in a liquid chamber (11) of a vibration damping device main body (10) having the liquid chamber (11) in which the liquid (L) is sealed, and an injection port (12) through which the liquid (L) is... Bridgestone Corporation

Non-pneumatic tire

A non-pneumatic tire (1) of the present invention includes an attachment body (11) attached to an axle, a ring-shaped body (13) which surrounds the attachment body (11) from the outside in a tire radial direction, and coupling members (15) which displaceably couple the attachment body (11) to the ring-shaped body... Bridgestone Corporation

Tire

A tire includes at least one air intake groove provided in a tire tread section, extending in a direction intersecting a tire circumferential direction, and having a groove width smaller than a groove depth, an air introduction groove opening to a tread surface side and communicating with the air intake... Bridgestone Corporation

Method to prepare rubber compounds containing silicon dioxide for the production of tyres

A rubber compound containing silicon dioxide for the production of tyres and comprising a polymer base with a cross-linkable unsaturated chain, a filler comprising silicon dioxide, a silane bonding agent and a vulcanization system. The filler further comprises a composite mineral consisting of a mineral of the zeolite family, onto... Bridgestone Corporation

Method for producing rubber composition for tire

In order to allow a braking property on wet roads and a wear resistance to be compatible, provided is a method for producing a rubber composition passing through a stage including a kneading step in which kneaded are 100 parts by mass of a rubber component (A) containing 60% by... Bridgestone Corporation

Vibration-proofing device

The present invention includes a first mounting member (11); a second mounting member (12); an actuator (14) which dampens and absorbs input vibration by reciprocally moving a movable element (13) in accordance with input vibration; an actuator case (15) which houses the actuator therein; and a relay connector (17) which... Bridgestone Corporation

Gear pump extruding machine

A gear pump extruding machine for extruding a rubber material includes a screw feeder, a gear pump provided on an outlet side of the screw feeder, and a die disposed on an outlet side of the gear pump. The gear pump extruding machine further includes protrusive members that are movable... Bridgestone Corporation

Tire

A tire comprises a rubber member formed of a rubber composition comprising a diene-based rubber, and a ring-shaped tire frame formed of a resin material comprising a polyamide-based thermoplastic resin, in which the rubber member is adhered to a resin member including a polyamide-based thermoplastic resin via a layer formed... Bridgestone Corporation

Methods for quantifying rubber content in a plant with nmr

Methods are described for quantifying an amount of natural rubber in a plant from a sample of the plant by obtaining a T1 spin-lattice relaxation rate or T2 spin-spin relaxation rate from a NMR apparatus, such as a low-field NMR apparatus operating at a magnetic field strength of 2 T... Bridgestone Corporation

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... Bridgestone Corporation

Tire

A block has a first wall surface formed from a position where a lateral groove is opened to a first circumferential groove toward an upstream side of an air flow, a second wall surface formed from a position where the lateral groove is opened to a second circumferential groove toward... Bridgestone Corporation

Tire

A block has a first wall surface formed from a position where a lateral groove is opened to a first circumferential groove toward an upstream side of an air flow, a second wall surface formed from a position where the lateral groove is opened to a second circumferential groove toward... Bridgestone Corporation

Tire

1.00≦X/Y≦1.15   (1)... Bridgestone Corporation

Heavy duty pneumatic tire

A belt portion of a heavy duty pneumatic tire includes a cross-laminated body in which extension directions of the cords in the belt layers next to each other in a tire radial direction intersect each other, and a parallel-laminated body in which extension directions of the cords in the belt... Bridgestone Corporation

Rubber composition and tire

This disclosure is to provide a rubber composition excellent in low loss property and wear resistance without deteriorating the processability. The rubber composition of this disclosure contains a rubber component having a diene-based polymer, a silica, and a glycerin fatty acid ester composition, wherein: the diene-based polymer has 3 or... Bridgestone Corporation

Rubber composition for tire and tire

This disclosure provides a rubber composition for tire obtainable by a method for producing a rubber composition comprising: (a) preparing a preliminary composition by preparing a first mixture containing all of or a part of a diene based rubber (A), a silica (B), a silane coupling agent (C) and an... Bridgestone Corporation

Additive composition for silica compound rubber composition, rubber composition and tire

As an additive composition capable of improving the processability, the low loss property and the breaking resistance of a silica compounded rubber composition, and a rubber composition excellent in processability, low loss property and breaking resistance, this disclosure provides an additive composition for silica compounded rubber composition comprising a glycerin... Bridgestone Corporation

Rubber composition, producing diene-based polymer, and tire

This disclosure is to provide a rubber composition excellent in low loss property, breaking resistance and wear resistance. In order to achieve the aforementioned purpose, this disclosure is a rubber composition containing a rubber component having a diene-based polymer and a silica, wherein: the diene-based polymer has 3 or more... Bridgestone Corporation

Tire

Circumferential groove's heat radiation on a tread center portion side of a plurality of blocks is enhanced. A block has a first wall surface formed from a position where a lateral groove is opened to a first circumferential groove toward an air flow's upstream side G, a second wall surface... Bridgestone Corporation

Rubber composition, tread member, pneumatic tire, and process for producing rubber composition

An object of the present invention is to enhance, in a rubber composition for tires comprising natural rubber as a principal component of a rubber component, a viscosity of the rubber composition in an unvulcanized state by providing the rubber composition with flexibility to improve workability of the rubber composition... Bridgestone Corporation

Rubber composition including conjugated diene polymer and olefin polymer and tire using same

The present invention relates to: a rubber composition comprising a matrix of a nonpolar conjugated diene polymer in which domains formed from an olefin polymer are dispersed, the matrix and the domain having an interface therebetween in which a chemical bond exists after vulcanization, the domain having a dynamic compressive... Bridgestone Corporation

Tire

A tire (10), including a circular tire frame (17) including a resinous material, the resinous material including at least polypropylene and having a pentad ratio of from 88.2% to 93.4%. The resinous material may include at least a first resin that is polypropylene and a second resin that is different... Bridgestone Corporation

01/18/18 / #20180015787

Pneumatic tire

This pneumatic tire has a tread part partitioned by four main grooves into a center land part, an outer intermediate land part, an inner intermediate land part, an outer shoulder land part, and an inner shoulder land part. The center land part is formed with center lug grooves in which... Bridgestone Corporation

01/18/18 / #20180015788

Pneumatic tire

A center land part and intermediate land parts formed on the tread surface by four main grooves are partitioned in the circumferential direction of the tire only by sipes, and form block parts arranged in the circumferential direction. The acute angle parts of each of the block parts are all... Bridgestone Corporation

01/18/18 / #20180015791

Tire

The present invention provides a tire improved in the run flat durability, having at least one member selected from the group consisting of a side reinforcing rubber layer and a bead filler using a rubber composition having a tensile stress at 50% elongation at 180° C. (M50) of 6.2 MPa... Bridgestone Corporation

01/18/18 / #20180015799

Stopper for vehicle

The present invention relates to a stopper (10) for vehicle which is disposed between a vehicle body side member (31) and a wheel side member (32) to restrict a relative amount of movement of both members (31, 32). The stopper includes a cylindrical holding member (11) attached to one of... Bridgestone Corporation

01/18/18 / #20180016361

Modified conjugated diene-based polymer and rubber composition containing same

The present invention provides a modified conjugated diene polymer in which a phenoxy group of a polar group-containing phenoxy compound is bonded to at least one selected from the group consisting of the end, main chain, and side chain of a conjugated diene polymer, which can further improve a rubber... Bridgestone Corporation

01/18/18 / #20180016425

Rubber composition and tire using same

The present invention provides: a rubber composition prepared by mixing 60 to 100 parts by mass of a filler (B), 0.9 to 2.4 parts by mass of a phenol resin (C), 0.07 to 0.2 parts by mass of a methylene donor (D), 1.5 to 2.1 parts by mass of a... Bridgestone Corporation

01/18/18 / #20180016427

Tire

A tire having a circular tire frame formed of a resin material, the resin material including an olefin-based resin composition and having a tensile elastic modulus as defined in JIS K7113 (1995) of from 140 MPa to 570 MPa and an amount of creep as defined in JIS K7115 (1999)... Bridgestone Corporation

01/11/18 / #20180009275

Pneumatic tire

The disclosed pneumatic tire includes a marking portion on an outer surface of a tire side portion, the marking portion including one or more markings that include a letter, a symbol, or a graphic. In a side view of the tire, the marking portion has a curved shape, linear ridges... Bridgestone Corporation

01/11/18 / #20180009918

Aged lanthanide-based catalyst systems and their use in the preparation of cis-1,4-polydienes

A method for preparing cis-1,4-polydienes, the method comprising the steps of preparing a preformed, active lanthanide-based catalyst, aging the active lanthanide-based catalyst for more than 5 days to thereby formed an aged catalyst, and introducing the aged catalyst and conjugated diene monomer to be polymerized to thereby form an active... Bridgestone Corporation

01/11/18 / #20180009919

Cis-1,4-polydienes with improved cold flow resistance

A method for preparing cis-1,4-polydienes having useful resistance to cold flow, the method comprising the steps of preparing a polymerization system including a reactive polymer by introducing a lanthanide-based catalyst and a conjugated diene monomer and adding a Lewis acid to the polymerization system including a reactive polymer.... Bridgestone Corporation

01/11/18 / #20180010295

Rubber-article-reinforcing steel cord and tire

Provided is a rubber article-reinforcing steel cord having improved shear fatigue resistance while reducing the weight of the steel cord by using a wire of high tensile strength. The rubber article-reinforcing steel cord 10 is a steel cord 10 having a two-layer twisted structure comprising a core filament 11 composed... Bridgestone Corporation

01/04/18 / #20180001699

Non-pneumatic tire

There is provided a non-pneumatic tire (1) including: an attachment body (11) that is attached to an axle; a ring-shaped body (13) that surrounds the attachment body (11) from an outside in a tire radial direction, a plurality of connection members (15) that are disposed between the attachment body (11)... Bridgestone Corporation

01/04/18 / #20180002490

Terminal-functionalized polymer and related methods

Disclosed herein are terminal-functionalized polymers functionalized with silicon-containing functionalizing agents, rubber compositions including the polymers, methods for improving the cold flow resistance of a polymer, methods for improving the filler dispersion of a silica-filled rubber composition, and processes for preparing the terminal-functionalized polymer.... Bridgestone Corporation

01/04/18 / #20180003218

Laminate and conductive roller

This disclosure is to provide a laminate with improved adhesiveness between the layers, and a conductive roller having the laminate. The laminate of this disclosure is a laminate comprising at least 2 or more energy ray curable resin layers formed by curing a resin composition with an energy ray, wherein:... Bridgestone Corporation

01/04/18 / #20180003785

Methods for determining plant rubber content with low field nmr

Methods are described for quantifying an amount of natural rubber in a plant from a sample of the plant by obtaining a NMR spectrum and analyzing the signal peaks for the natural rubber in the plant sample and a standard component tested in combination with the plant sample. The NMR... Bridgestone Corporation

12/28/17 / #20170368418

Golf ball

In a golf ball having a core and a cover of at least one layer encasing the core, the core is a product molded under heat from a rubber composition which includes (A) a base rubber, (B) an unsaturated carboxylic acid and/or a metal salt thereof, and (C) an organic... Bridgestone Corporation

12/28/17 / #20170368427

Golf ball manufacturing method

A method of manufacturing golf balls having a core and a cover of at least one layer encasing the core includes the steps of producing a core by molding and vulcanizing a rubber composition containing (A) a base rubber, (B) an α,β-unsaturated carboxylic acid and/or a metal salt thereof, and... Bridgestone Corporation

12/28/17 / #20170368876

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

As a rubber composition excellent in fatigue resistance and a method for producing the same, this disclosure provides a rubber composition containing a zinc oxide, wherein: a total volume of aggregates of the zinc oxide with a diameter of 20 μm or more is 0.008 or less in the rubber... Bridgestone Corporation

12/28/17 / #20170368881

Non-pneumatic tire

There is provided a non-pneumatic tire (1), which includes an attachment body (11) that is attached to an axle, a ring-shaped body (13) that surrounds the attachment body (11) from an outside in a tire radial direction, a connection member (15) that displaceably connects the attachment body (11) and the... Bridgestone Corporation

12/28/17 / #20170369621

Halogenated wax grafted to low molecular weight polymer and rubber composition

A wax-polymer compound includes (a) a polymer component that is a polymerized unsaturated monomer, optionally copolymerized with a vinyl-aromatic monomer, and (b) a halogenated hydrocarbon wax component. The polymer component is grafted to the halogenated hydrocarbon wax component, and the wax-polymer compound has a number average molecular weight of about... Bridgestone Corporation

12/28/17 / #20170369739

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

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

12/14/17 / #20170354261

Seat pad and manufacturing seat pad

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

12/14/17 / #20170355178

Laminate and conductive roller

This disclosure is to provide a laminate with improved adhesiveness between the layers and excellent softness, and a conductive roller which enables sufficient pressing contact when pressed to other members. The laminate of this disclosure is a laminate comprising at least 2 or more energy ray curable resin layers formed... Bridgestone Corporation

12/14/17 / #20170355406

Sprocket and elastic crawler drive mechanism

A sprocket (10) is capable of engaging with engaging portions (22) on an elastic endless belt (21). On a tooth face (F) of a tooth (12) of the sprocket (10), a portion of a tooth base on at least one side of a center line (O1) of the tooth (12)... Bridgestone Corporation

11/30/17 / #20170341464

Non-pneumatic tire

A non-pneumatic tire (1) of the present invention is provided with: an attachment body (11) attached to an axle; an outer cylindrical body (13) which surrounds the attachment body (11) from the outside in a tire radial direction; a coupling member (15) which displaceably couples the attachment body (11) and... Bridgestone Corporation

11/30/17 / #20170342187

Block copolymers including high vinyl segments

A method for the preparation of block copolymers including at least one high vinyl segment, the method comprising (i) charging into a reactor a diene monomer in a hydrocarbon solvent, a catalytically effective amount of anionic initiator, and an oligomeric oxolanyl propane, whereby the reactor is optionally cooled, to form... Bridgestone Corporation

11/30/17 / #20170343072

Vibration damping device

The vibration damping device 1 comprises an outer cylinder member 9 formed by winding a flat plate member into a cylindrical shape; an inner mounting member 11 connected to the outer cylinder member via elastic members 14; and a rod portion 30, wherein: the outer cylinder member has a meeting... Bridgestone Corporation

11/30/17 / #20170343452

Tire fault portion prediction system and tire fault portion prediction method

The tire fault portion prediction system of this disclosure comprises: a tire running parameter measurement unit, a state characteristic value measurement unit, a degree of fatigue characteristic value calculation unit, and a tire fault portion prediction unit for predicting fault portions of a tire based on a degree of fatigue... Bridgestone Corporation

11/23/17 / #20170333991

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

A method for manufacturing a three-dimensional object includes converting model data of the three-dimensional object into slice data, sintering powder based on the slice data after the conversion, and manufacturing the three-dimensional object by a layered manufacturing process of stacking a plurality of sintered layers. The method includes a part... Bridgestone Corporation

11/23/17 / #20170334248

Pneumatic motorcycle tire

The pneumatic motorcycle tire includes a spiral belt, wherein: an aspect ratio of the tire is 60% or more; at a standard condition, each lap of reinforcing cords is located at a constant spacing along a periphery of the spiral belt among the entire tire width direction; in the tire... Bridgestone Corporation

Patent Packs
11/23/17 / #20170335032

Bulk polymerization of polyisoprene with preformed catalyst

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

11/23/17 / #20170335045

Block copolymers including high vinyl segments

A method for the preparation of block copolymers including at least one high vinyl segment, the method comprising (i) charging into a reactor a diene monomer in a hydrocarbon solvent, a catalytically effective amount of anionic initiator, and an oligomeric oxolanyl propane, whereby the reactor is optionally cooled; (ii) allowing... Bridgestone Corporation

11/23/17 / #20170335093

Rubber compound to produce tyres

n is an integer from 0 to 4.... Bridgestone Corporation

11/16/17 / #20170326925

Tyre comprising a foam material for acoustic absorption

A tyre comprising an impermeable layer designed to ensure the sealing under pressure of the air contained in the inner cavity of the carcass and a foam material provided on the inside of said inner cavity, wherein the foam material is made up of open cell foam with a cell... Bridgestone Corporation

11/16/17 / #20170327020

Seat pad

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

11/16/17 / #20170327163

Elastic crawler drive mechanism

This disclosure is to provide an elastic crawler drive mechanism including an elastic crawler (20) with engaging portions (22) disposed on an endless belt (21), and a sprocket (10) having teeth (12), wherein: engaging surfaces (F2) of the engaging portions (22) have flat engaging planes (22b) in contact with a... Bridgestone Corporation

11/09/17 / #20170320359

Tire

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

11/09/17 / #20170321040

Rubber composition and manufacturing rubber composition

wherein, R20's are each independently hydrogen or a monovalent hydrocarbon group, and at least one of R20's is a substituted or unsubstituted linear alkyl group having from 7 to 18 carbon atoms, a substituted or unsubstituted branched-chain alkyl group having from 7 to 18 carbon atoms, or a substituted or... Bridgestone Corporation

11/09/17 / #20170321293

Carbon steel wire and manufacturing same

Provided is a carbon steel wire excellent in shear resistance as compared with a conventional one and a method of manufacturing such a carbon steel wire. Provided is a carbon steel wire 1 having a wire diameter of from 0.1 to 0.6 mm, and when the radius of a circular... Bridgestone Corporation

11/09/17 / #20170321775

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

Included are an outer attachment member 12, which is coupled to one of a vibration generator 16 and a vibration receiver, an inner attachment member 11, which is coupled to the other one of the vibration generator 16 and the vibration receiver, and an elastic body 13, which is positioned... Bridgestone Corporation

11/02/17 / #20170313846

Rubber compound to produce tyres

A rubber compound comprising a polymer base with a cross-linkable unsaturated chain, a filler, and a vulcanization system. The vulcanization system comprises at least sulphur, one or more vulcanization accelerators, and one or more vulcanization activators. The vulcanization system comprises a vulcanization activator consisting of Zn2SiO4.... Bridgestone Corporation

11/02/17 / #20170313847

Tire

A tire comprising a tire frame that is formed of a resinous material and has a circular form, the resinous material including a thermoplastic polyamide-based elastomer, silica, and a silane coupling agent that has a functional group, the functional group including at least one selected from the group consisting of... Bridgestone Corporation

11/02/17 / #20170313862

Method for producing rubber composition, rubber composition, and tire

Provided is a method for producing a rubber composition containing: a rubber component (A) including at least 50 mass % of a styrene-butadiene copolymer rubber; a filler (B) including 80-130 parts by mass of silica; a silane coupling agent (C); a thermoplastic resin (D); at least one compound (E) selected... Bridgestone Corporation

10/26/17 / #20170305191

Reinforcing tire plies

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

10/26/17 / #20170305193

Run-flat tire

The run-flat tire of this disclosure includes a tread portion, a pair of sidewall portions continuous, bead portions, side reinforcing rubbers with crescent-like cross section, and a carcass, wherein: when the tire is mounted to a rim, and an internal pressure of 250 kPa or more is applied, in a... Bridgestone Corporation

Patent Packs
10/26/17 / #20170305195

Non-pneumatic tire

In a non-pneumatic tire according to the present invention, a plurality of curved portions (21d to 21f and 22d to 22f) curved in a tire circumferential direction are formed on elastic coupling plates (21 and 22) in an extending direction in which the elastic coupling plates (21 and 22) extend... Bridgestone Corporation

10/26/17 / #20170305197

Tire

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

10/26/17 / #20170305199

Passenger vehicle pneumatic radial tire

When a tire is attached to a rim and set to an internal pressure of 250 kPa or more, a ratio SW/OD of the tire is 0.26 or less in the case where SW of the tire is less than 165 (mm), and SW and OD satisfy a relationship 2.135×SW+282.3≦OD... Bridgestone Corporation

10/26/17 / #20170305208

Pneumatic tire

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

10/26/17 / #20170305683

Conveyor belt and conveyor belt device

A conveyor belt (13A) includes a main body rubber (14) which extends in a belt longitudinal direction L and a loop coil (15A) which is embedded in the main body rubber (14) and has an annular shape in a plan view when viewed in belt thickness direction, in which the... Bridgestone Corporation

10/26/17 / #20170306128

New class of antioxidant agents for polymer products

the substituents R1, R2, R3, R4 and R10, which are equal to or different from one another, are chosen among H, OH, and (CH2)nCHCH2 with n as an integer number ranging from 1 to 10; provided that, among the substituents R1, R2, R3, R4 and R10, at least one is... Bridgestone Corporation

10/26/17 / #20170308000

Roller and image forming apparatus using same

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

10/19/17 / #20170297377

Pneumatic tire

t1<t2, and t3<t2.... Bridgestone Corporation

10/19/17 / #20170297378

Pneumatic tire

The pneumatic tire of this disclosure comprises on a tread surface one or more land portions, wherein the land portions is formed into a protruding shape such that its tire radial outline in a tire widthwise cross section protrudes to a tire radial outer side, the outline includes, in the... Bridgestone Corporation

10/19/17 / #20170297383

Run-flat tire

The run-flat tire of this disclosure includes a tread portion, a pair of sidewall portions, bead portions, side reinforcing rubbers with crescent-like cross section, and a carcass formed of plies of radially arranged cords, wherein: when the tire is mounted to a rim, and an internal pressure of 250 kPa... Bridgestone Corporation

10/19/17 / #20170297580

Road surface condition determining system

The invention provides a road surface condition determining system with improved accuracy. In the system, a plurality of vehicles Wi are used, each equipped with on-board sensors (11, 12) for acquiring vehicular information, which is information on the behavior of the vehicle during travel, a feature value calculating means (13)... Bridgestone Corporation

10/19/17 / #20170298182

Tire

A tire includes a circular tire frame formed from a resinous material, the resinous material including a thermoplastic elastomer, the thermoplastic elastomer including: a hard segment that does not contain an aromatic ring; a soft segment; and a connection portion that includes an aromatic ring and that connects the hard... Bridgestone Corporation

10/19/17 / #20170298189

Tire

A tire including a tire frame that is formed of a resin material and has a circular form, the resin material including a thermoplastic elastomer having a hard segment and a soft segment, and a polymer compound that has the same structural unit as the structural unit of the soft... Bridgestone Corporation

10/19/17 / #20170299008

Vibration damping device

The present invention relates to a vibration damping device including an outer attachment member (10) connected to one of a vibration generating part and a vibration receiving part, an inner attachment member (20) connected to the other, and an elastic body (30) configured to connect the outer attachment member (10)... Bridgestone Corporation

10/19/17 / #20170299011

Liquid-filled bushing

A liquid-filled bushing (1) includes an inner tube (11) and an outer member (12). The outer member (12) defines a pair of liquid chambers between the outer member (12) and the inner tube (11), and an orifice portion (13) in which an orifice passage (24) which communicates with the liquid... Bridgestone Corporation

10/19/17 / #20170299013

Vibration isolation device

A vibration isolation device (10) includes a first mounting member (11) connected to one of a vibration generating portion and a vibration receiving portion, and a second mounting member (12) connected to the other; an elastic body (13) disposed between the mounting members (11, 12); a first stopper elastic body... Bridgestone Corporation

10/12/17 / #20170291455

Motorcycle tire

Provided is a motorcycle tire having improved wet performance during straight running without compromising other performances. The motorcycle tire is a motorcycle tire whose rotation direction when mounted on a vehicle is designated. A main groove (10) at least including a first groove (11) and a second groove (12) having... Bridgestone Corporation

10/12/17 / #20170291459

Run-flat tire

The run-flat tire of this disclosure includes a tread portion, a pair of sidewall portions, bead portions, side reinforcing rubbers with crescent-like cross section, a carcass formed of plies of radially arranged cords, wherein: when the tire is mounted to a rim, and an internal pressure of 250 kPa or... Bridgestone Corporation

10/12/17 / #20170291977

Polymerization catalyst composition and employing same

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

10/12/17 / #20170291991

Tire

A tire including a tire skeleton body that is made of a resin material containing a polyamide-based thermoplastic elastomer and has a ring shape, wherein the polyamide-based thermoplastic elastomer includes a hard segment, a soft segment consisting of a constituent unit derived from polypropylene glycol, and a binding portion that... Bridgestone Corporation

10/05/17 / #20170283516

Processes for preparing aminosilane functionalized polymers

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

10/05/17 / #20170285513

Roller and image forming apparatus using same

Provided is a roller, in particular a conductive roller, capable of suppressing generation of cut debris from a cut surface of an end part of a foam layer in the roller axial direction over a long period of time, and an image forming device using the roller. A roller includes... Bridgestone Corporation

10/05/17 / #20170285516

Elastic member

Provided is an elastic member which is obtained by forming a resin coating layer on at least a part of the surface of a base that is formed of an elastic material, and which is characterized in that the resin coating layer is a coating film that contains 1.5-45 parts... Bridgestone Corporation








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