Patents Assigned to Bridgestone Corporation
  • Patent number: 11040578
    Abstract: A pneumatic tire comprises: a first block 71 located on a tire equatorial plane and having a recess 62 that inclines with respect to a tire width direction; and a second block 72 located to face the recess of the first block.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: June 22, 2021
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Shintaro Hayashi, Shungo Fujita
  • Publication number: 20210179016
    Abstract: A tire anti-theft system includes a transmitter attached to a tire and configured to transmit tire ID information; a first database configured to store vehicle ID information and tire ID information of a tire mounted on the vehicle; a second database configured to store the tire ID information and tire status information indicating whether or not the tire identified with the tire ID information is stolen tire; and a vehicle control apparatus, in which the vehicle control apparatus includes a reader configured to perform near field communication with the transmitter attached to the tire mounted on a vehicle to be controlled and acquire the tire ID information, and a controller configured to, in a case where the reader acquires the tire ID information, restrict operation of the vehicle to be controlled if information indicating that the tire is stolen tire is stored in association with the tire ID information.
    Type: Application
    Filed: September 12, 2018
    Publication date: June 17, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Jun WATANABE, Shin SUKEGAWA, Takayuki OHARA, Kenji MATSUO, Kotaro YAMADA, Satoshi HIRAJIMA, Suguru YAMAGUCHI
  • Publication number: 20210179109
    Abstract: A tire noise testing method, a vehicle and a control device that are efficient in an actual vehicle noise test. The method of the invention is conducted while a vehicle is driven automatically. The method includes a step of operating a control unit when the vehicle reaches a predetermined position or reaches a predetermined speed, for putting the vehicle into coast-traveling with a prime mover of the vehicle in a non-driving state. The method further includes a step of operating a measuring unit for measuring the tire noise of the vehicle during the coast-traveling of the vehicle.
    Type: Application
    Filed: July 2, 2019
    Publication date: June 17, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Ryosuke MORI
  • Publication number: 20210171676
    Abstract: Disclosed herein are a functionalized diene monomer-containing polymer containing first and second functionalizing groups, processes for preparing the functionalized polymer, and rubber compositions containing the functionalized polymer. The functionalized polymer contains polymer chains comprises of at least one conjugated diene monomer optionally in combination with at least one vinyl aromatic monomer wherein each polymer chain is functionalized at its chain end with at least the first functionalizing group and is coupled via the first functionalizing group to the second functionalizing group.
    Type: Application
    Filed: December 13, 2018
    Publication date: June 10, 2021
    Applicant: Bridgestone Corporation
    Inventors: Yuan-Yong Yan, Zengquan Qin, Koichi Saito, Rita E. Cook
  • Publication number: 20210171134
    Abstract: A crawler traveling apparatus according to the present disclosure includes an endless rubber crawler, a drive wheel, a tension wheel, and a sensor which can acquire load information related to a load that the tension wheel receives from the rubber crawler. The rubber crawler includes an endless crawler belt and a plurality of cores, each core including a pair of core projections. The tension wheel abuts an inner surface of the rubber crawler at least, in a crawler width direction, at any of a position between the pair of core projections and both outer positions of the pair of core projections to be rotated following the rubber crawler, and the sensor can acquire tension load information in a crawler thickness direction that the tension wheel receives from the inner surface of the rubber crawler as the load information.
    Type: Application
    Filed: December 3, 2020
    Publication date: June 10, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Shingo SUGIHARA
  • Publication number: 20210171744
    Abstract: To provide a tire rubber composition that is capable of producing a tire that is excellent in balance between the low heat generation property and the crack resistance. The tire rubber composition contains a rubber component (A), at least one compound (B) selected from the group consisting of a compound represented by the formula (I) and a compound represented by the formula (II), a vulcanization accelerator (C) containing two or more kinds of vulcanization accelerators including a thiuram-based vulcanization accelerator, and a filler (D).
    Type: Application
    Filed: November 30, 2018
    Publication date: June 10, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Yoshinori MIYAZAKI
  • Publication number: 20210171133
    Abstract: A monitoring system 4 of the present disclosure is a monitoring system which is used for a traveling machine 3 having a rubber crawler 1 and a machine body 2, and includes an angle sensor 45, a force sensor 41 and a processing section 42. The rubber crawler includes a plurality of cores 13 which are arranged along a crawler circumferential direction and is mounted to an underbody 21 of the machine body, the angle sensor is configured to detect an inclination angle to a horizontal surface of the machine body, the force sensor is configured to detect a force applied from the rubber crawler to an idler of the underbody or a physical amount correlating with the force, and the processing section is configured to determine existence or non-existence of a prior warning of deviation based on outputs from the angle sensor and the force sensor.
    Type: Application
    Filed: December 2, 2020
    Publication date: June 10, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Satoshi KONDO
  • Publication number: 20210171743
    Abstract: The rubber composition of the present invention contains: a rubber component (A) containing a butadiene-based rubber and 30% by mass or more of a natural rubber; a filler (B); 30 to 55 parts by mass of a softening agent (C) relative to 100 parts by mass of the rubber component (A); and 1 to 6 parts by mass of a linear polyhydric alcohol (D) relative to 100 parts by mass of the rubber component (A), wherein the softening agent (C) contains a softening agent (C1) which has a high affinity to the natural rubber in an amount of 0 parts by mass or more and less than 15 parts by mass relative to 100 parts by mass of the rubber component (A) and contains a softening agent (C2) which has a high affinity to the butadiene-based rubber in an amount of 10 parts by mass or more relative to 100 parts by mass of the rubber component (A). From the rubber composition, a crosslinked rubber composition having a good balance between low heat generation property and crack resistance can be obtained.
    Type: Application
    Filed: October 17, 2018
    Publication date: June 10, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Yasuhiro SHODA
  • Patent number: 11028195
    Abstract: Vulcanizates with desirable properties can be obtained from compounds incorporating polymers that include hydroxyl group-containing aryl functionalities. The functionalities can be incorporated by using any or all of appropriate initiators, monomers and terminating compounds. Such polymers exhibit excellent interactivity with both conventional and non-conventional fillers.
    Type: Grant
    Filed: March 10, 2019
    Date of Patent: June 8, 2021
    Assignee: Bridgestone Corporation
    Inventors: Xiao-Dong Pan, Zengquan Qin, Yuan-Yong Yan, Dennis R. Brumbaugh, Jason T. Poulton
  • Patent number: 11028208
    Abstract: Disclosed herein are a terminal-functionalized polymer, rubber compositions containing the polymer, and related processes for preparing the polymer. The functionalizing compound used to prepare the terminal-functionalized polymer has a specified formula which includes a silicon atom and a moiety containing at least two carbon-carbon double bonds in a conjugated configuration.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: June 8, 2021
    Assignee: Bridgestone Corporation
    Inventor: Yuan-Yong Yan
  • Patent number: 11028188
    Abstract: 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.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: June 8, 2021
    Assignee: Bridgestone Corporation
    Inventors: Yingyi Huang, Mark W. Smale, Robert W. White, Hiroshi Mouri, William M. Cole
  • Patent number: 11027577
    Abstract: The provided tire has excellent durability regardless of use in a high-humidity environment or contact with water, even though the framework member of the tire is made of a resin material. The resin material is made of a resin composition including 60 mass % or more of a polyamide resin formed by polymerizing an aliphatic diamine having 6 to 20 carbon atoms and an aliphatic dicarboxylic acid having 10 to 20 carbon atoms.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: June 8, 2021
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Daisuke Nakajima
  • Publication number: 20210161684
    Abstract: A sole of an athletic prosthetic leg, wherein the sole is attached to a ground contact region of the athletic prosthetic leg which has a leaf-spring-like leg portion extending to a side of a toe via at least one curved portion, the ground contact region extending from the toe to a side of the curved portion in an arc, wherein the sole includes a bottom surface having a shape conforming to an extending shape of the ground contact region, and the bottom surface includes at least one sipe linearly extending at a portion which continues at a constant radius of curvature from the toe, and the sipe terminates in the bottom surface.
    Type: Application
    Filed: April 17, 2019
    Publication date: June 3, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Dyta ITOI, Kohei SAHASHI
  • Publication number: 20210163719
    Abstract: The present invention relates to a side reinforcing rubber composition for run flat tires, containing a rubber component; a filler containing a carbon black A having a nitrogen adsorption specific surface area of 20 to 60 m2/g and a carbon black B having a nitrogen adsorption specific surface area of 100 to 150 m2/g, a ratio (a/b) of the content a of the carbon black A to the content b of the carbon black B being 2.7 to 10; a vulcanizing agent; and a vulcanization accelerator, the side reinforcing rubber composition for run flat tires being able to produce a side reinforcing rubber for run flat tires capable of enhancing the run flat durability.
    Type: Application
    Filed: September 7, 2018
    Publication date: June 3, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Noritoshi NUKUI
  • Publication number: 20210162816
    Abstract: Provided is pneumatic tire in which a land portion includes a width direction sipe extending in a tread width direction, the width direction sipe includes, in a cross section along a depth direction, a linear portion extending from an opening of the width direction sipe toward a bottom of the width direction sipe, and a bent portion connected to the linear portion, bending and extending from a connecting portion with the linear portion to the bottom of the width direction sipe, and the linear portion of the width direction sipe has a length in the depth direction increasing as the linear portion extends from a center portion of the width direction sipe in the tread width direction toward an end portion in the tread width direction.
    Type: Application
    Filed: December 3, 2018
    Publication date: June 3, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Yoshiki NAKATA
  • Publication number: 20210162634
    Abstract: Provided is a tire vulcanizing bladder comprising fluororubber, wherein a plurality of grooves extending in a width direction are formed on a circumference of an outer surface of the tire vulcanizing bladder, and a plurality of recesses connecting the grooves to each other are formed between the grooves. Also provided is a pneumatic tire comprising one or more fluorine-containing particles having a maximum diameter of 1.0 ?m or more per area of 100 ?m2 of a tire inner surface, wherein a plurality of bladder ridges extending in a tire width direction are formed on a circumference of the tire inner surface, and a plurality of protrusions connecting the bladder ridges to each other are formed between the bladder ridges.
    Type: Application
    Filed: June 14, 2018
    Publication date: June 3, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Junichi ORIDE, Yasuhiro ODA, Isao MATSUMURA, Yuya MORITA
  • Publication number: 20210163720
    Abstract: Disclosed herein are coupled polymer products comprising polymer with up to five polymer chains bonded to a functionalizing compound of either formula (II) or formula (III), wherein the polymer chains are comprised of conjugated diene-containing monomers optionally in combination with vinyl aromatic monomers and further include vinyl group-functionalized aminosilane compound of formula (I) bonded within the polymer chain. Also disclosed are processes for producing the coupled polymer products as well as a rubber composition containing the coupled polymer product and tire components comprising the rubber composition.
    Type: Application
    Filed: December 13, 2018
    Publication date: June 3, 2021
    Applicant: Bridgestone Corporation
    Inventors: Yuan-Yong Yan, Rita E. Cook, Christine M. Rademacher
  • Publication number: 20210162819
    Abstract: Provided is a pneumatic radial tire for an aircraft including a bead core, a radial carcass and a stiffener, the radial carcass including one or more turn-up plies and one or more down plies, wherein in tire axial direction cross-sectional view, when an intersection point of a virtual circle with a ply closest to a tire axial direction inner side of the stiffener among the plies intersecting with the virtual circle having a radius that is twice as large as a diameter D of the bead core from a center O of the bead core is a point A, an intersection point of the virtual circle with a ply closest to a tire axial direction outer side of the stiffener is a point B, and a midpoint between the point A and the point B is a reference point C, then a line segment OC connecting the center O of the bead core to the reference point C has an inclination angle ? of 17° or less to a tire radial direction line passing the center O of the bead core on the tire axial direction outer side.
    Type: Application
    Filed: December 19, 2018
    Publication date: June 3, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Gaku OGAWA, Takuya MATSUMOTO
  • Patent number: D922936
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: June 22, 2021
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Akihiko Abe
  • Patent number: D922937
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: June 22, 2021
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Akihiko Abe