Patents Assigned to Bridgestone Corporation
  • Publication number: 20240227464
    Abstract: In a tire of the present disclosure, an overlap width, between a conductive member and a rubber chafer, in an extending direction of the conductive member is 1 mm or more. A method of manufacturing a tire of the present disclosure includes vulcanizing a raw tire in a state such that an overlap width, between a conductive member and a rubber chafer before vulcanization, in an extending direction of the conductive member is 10 mm or more. In a raw tire of the present disclosure, an overlap width, between a conductive member and a rubber chafer before vulcanization, in an extending direction of the conductive member is 10 mm or more.
    Type: Application
    Filed: July 19, 2022
    Publication date: July 11, 2024
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Fumiya GOTO
  • Publication number: 20240227457
    Abstract: A tire includes a block group delimited by a pair of circumferential grooves extending in a tire circumferential direction. The block group includes a plurality of blocks delimited by a plurality of lateral grooves extending in the tire width direction. Each block of the plurality of block group is partitioned into a plurality of small blocks by a circumferential sipe and a plurality of lateral sipes. In each block, the circumferential sipe extends in a zigzag shape, and at least an outermost lateral sipes of the plurality of lateral sipes in the tire circumferential direction extend in parallel with each other.
    Type: Application
    Filed: March 22, 2022
    Publication date: July 11, 2024
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Shintaro HAYASHI
  • Publication number: 20240232982
    Abstract: A method executed by a computer, including: executing multiple times a first process of outputting question information to a user and acquiring response information from the user; executing a second process at least once while executing the first process multiple times; executing a third process of estimating a vehicle use and customer value for the user and specifying one or more tire products to recommend to the user based on two or more pieces of the response information acquired; and outputting information indicating the vehicle use and the customer value estimated and information regarding the one or more tire products specified. The second process includes determining a comprehension level of the user regarding a tire product, based on one or more pieces of the response information acquired, and determining question information to be output next time and thereafter, according to the comprehension level determined.
    Type: Application
    Filed: November 5, 2021
    Publication date: July 11, 2024
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Shouichi HASHIMOTO, Toshihiko SASABE, Tomomi KIKUMORI, Yosuke KASAI
  • Patent number: 12030567
    Abstract: A rubber crawler includes: a crawler main body; a main cord layer overlaid on a crawler outer circumferential side of a main body inner circumferential portion, and including a main cord extending in a crawler circumferential direction; a first bias cord layer overlaid on a crawler outer circumferential side of the main cord layer, and including a bias ply configured with a bias cord, which extends obliquely with respect to the crawler circumferential direction; a second bias cord layer overlaid on a crawler outer circumferential side of the first bias cord layer, and including a bias ply configured with a bias cord, which intersects with the bias cord; and a protective cord layer overlaid on a crawler outer circumferential side of the second bias cord layer and overlaid on a crawler inner circumferential side of a main body outer circumferential portion, and is formed by one sheet of protective ply configured with a protective cord, which extends along a crawler width direction.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: July 9, 2024
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Ryo Miyamoto
  • Publication number: 20240217274
    Abstract: A pneumatic tire of this disclosure includes a communication device, the communication device is entirely wrapped with a coating material, the coating material is formed of vinyl or nylon, and the communication device wrapped with the coating material is attached to a surface of a sidewall portion of the pneumatic tire or embedded in the sidewall portion.
    Type: Application
    Filed: October 28, 2021
    Publication date: July 4, 2024
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Takashi OSAKA
  • Publication number: 20240217194
    Abstract: Provided are a mold for forming a tire including an annular tread molding part which is configured to be opened and closed by moving a plurality of segments in a radial direction, and a tire production method using the same. In the mold for forming the tire, each of the segments includes a plurality of design surface dividing mold parts, each of the plurality of the design surface dividing mold parts includes a tread design surface for forming a tread of a tire, the plurality of the design surface dividing mold parts are arranged in a circumferential direction of the segments, and the plurality of the design surface dividing mold parts are configured to rotate around a rotatable shaft parallel to an axis of the tread molding part when the tread molding part is opened after vulcanization molding of the tire.
    Type: Application
    Filed: November 24, 2021
    Publication date: July 4, 2024
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Yasuyuki ISHIHARA
  • Publication number: 20240219266
    Abstract: A tire wear prediction system predicts the wear of tires mounted on a vehicle comprising a fleet. The tire wear prediction system sets a driver-related coefficient to be applied to the driver-related explanatory variable and a vehicle-related coefficient to be applied to the vehicle-related explanatory variable based on the actual values of the driver-related explanatory variables and the vehicle-related explanatory variables, and calculates the wear as an objective variable by using the driver-related explanatory variables and the vehicle related explanatory variables. The tire wear prediction system recalculates a predicted value of the wear when at least one of the attribute of the driver and the attribute of the vehicle is changed by using the driver-related coefficient and the vehicle-related coefficient.
    Type: Application
    Filed: March 29, 2022
    Publication date: July 4, 2024
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Geert SCHOORS, David HENSHER
  • Publication number: 20240217270
    Abstract: The problem of this disclosure is to provide a non-pneumatic tire that achieves both ride comfort and durability, even in a small diameter size. The solution is a non-pneumatic tire (1) using a resin composition as a skeletal member, wherein the resin composition has a bending modulus of elasticity of 247 MPa or less at ?20° ° C. in accordance with ISO 178 and a bending modulus of elasticity of 32 MPa or more at 60° C. in accordance with ISO 178, and a tire diameter D in the tire radial direction is 35 cm or less.
    Type: Application
    Filed: December 1, 2021
    Publication date: July 4, 2024
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Shinichi EGUCHI
  • Patent number: 12024091
    Abstract: A tire state management system (10) is provided with an image data acquisition unit (210) for acquiring 1st image data acquired by imaging the outer surface at a first timing and second image data acquired by imaging the outer surface at a second timing later than the first timing, a damage portion acquisition unit (220) for acquiring a damage included in the 1st image data and a damage included in the 2nd image data, a vehicle operation information acquisition unit (230) for acquiring operation information of a vehicle on which a tire is mounted, and a maintenance prediction unit (240) for estimating a progress speed based on the damage included in the 1st image data and the progress speed included in the 2nd image data and predicting a maintenance timing for the tire based on the progress speed and the operation information.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: July 2, 2024
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Kanae Fujikake, Hideyuki Kaneda, Teppei Mori, Masafumi Daifuku, Kei Tsuchiya
  • Publication number: 20240208272
    Abstract: The tire 1 comprises a pair of bead portions 2, a pair of sidewall portions 3, a tread portion 4, and a carcass 5, and comprises: two or more layers of side rubbers 11a and 11b of different rubber types, each of which is disposed on the outer side of the carcass 5 in the tire width direction so as to straddle the tire maximum width position SWH in the tire radial direction, and a communication device disposed at a boundary of at least one of the two or more layers of side rubber.
    Type: Application
    Filed: November 2, 2021
    Publication date: June 27, 2024
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Masayuki HASHIMOTO, Kenta SUMITOMO, Takashi OSAKA
  • Publication number: 20240209192
    Abstract: A rubber composition comprises: a rubber component; 0.01 parts by mass or more of a rubber-metal adhesion promoter per 100 parts by mass of the rubber component, the rubber-metal adhesion promoter containing at least one selected from the group consisting of a carboxylic acid metal salt (1) having a carbon number of 2 to 25 and a metal species selected from the group consisting of bismuth, copper, antimony, silver, niobium, and zirconium and a compound (2) represented by formula (A); and 4,4?-diphenylmethanebismaleimide. The use of the rubber composition enables obtainment of vulcanized rubber having 10 good deterioration resistance, excellent durability, and excellent rubber-metal thermal deterioration adhesiveness.
    Type: Application
    Filed: March 22, 2022
    Publication date: June 27, 2024
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Kazunori KANEDA, Junichi YAMAGISHI, Kosuke SAITO
  • Publication number: 20240209163
    Abstract: This disclosure provides a method for producing a cross-linked rubber for the additively fabricated object that can be easily produced with good dimensional accuracy and simplicity, even using a general-purpose uncross-linked rubber composition.
    Type: Application
    Filed: November 16, 2021
    Publication date: June 27, 2024
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Yasuo OHSAWA, Norihiko KAGA
  • Publication number: 20240198732
    Abstract: A tire wear prediction system (100) is provided with a wear prediction unit (110) for predicting a wear state of a tire mounted at a predetermined wheel position of a vehicle based on the traveling state of the vehicle, a change history acquisition unit (120) for acquiring a change history including the rotation of the wheel position on which the tire is mounted or a content of replacement with another tire, and a wear state correction unit (140) for correcting a reference of the wear state of the tire predicted by the wear prediction unit (110) based on the change history. The wear prediction unit (110) predicts the wear state of the tire based on the reference of the wear state corrected by the wear state correction unit (140).
    Type: Application
    Filed: March 1, 2024
    Publication date: June 20, 2024
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Naoto OKAZAKI, Shoji OIDA
  • Publication number: 20240190184
    Abstract: The tire pressure monitoring system repeatedly acquires the internal pressure value of the pneumatic tire and activates the timer when the internal pressure value falls below the warning threshold. The tire pressure monitoring system stops the output of the warning information associated with the warning threshold even if the internal pressure value falls below the warning threshold again until the timer expires. The tire pressure monitoring system newly activates the timer when the internal pressure value exceeds the warning threshold after falling below the warning threshold or the danger threshold in the period until the timer expires.
    Type: Application
    Filed: February 7, 2022
    Publication date: June 13, 2024
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Yuya TAKASAWA, Thierry JAKIRCEVIC
  • Patent number: 12005747
    Abstract: A tire mounting state detection system (100) is provided with a vehicle configuration holding unit (230) holding a vehicle configuration including the number of wheels of a vehicle (10); a transmitter number detection unit (250) detecting the number of transmitters based on a radio signal received by a receiving unit; a state detection unit (260) detecting whether or not the number of transmitters exceeds or is short the number of wheels based on the number of wheels based on the vehicle configuration and the number of transmitters detected; and an output unit (270) outputting that the state of the transmitter is abnormal when it is determined that the number of transmitters exceeds or is short the number of wheels.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: June 11, 2024
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Kyohei Honda
  • Patent number: 12006422
    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: Grant
    Filed: December 13, 2018
    Date of Patent: June 11, 2024
    Assignee: Bridgestone Corporation
    Inventors: Yuan-Yong Yan, Rita E. Cook, Christine M. Rademacher
  • Patent number: 12005743
    Abstract: A tire includes a tread surface portion with inclined grooves, 2ND longitudinal grooves, and shoulder longitudinal grooves; and an indicator portion that indicates a rotation direction of the tire in which a vehicle travels forward. The inclined groove gradually extends forward in the rotation direction toward a tire equator from the outside in the tire width direction. A front surface among inner surfaces defining the inclined groove includes a first side surface with an inner end portion to which the 2ND longitudinal groove is open, a second side surface positioned closer to an inside than the first side surface and of which an outer end portion is positioned closer to a rear side than the inner end portion of the first side surface, and a stepped surface that connects an inner edge of the first side surface to an outer edge of the second side surface and faces the outside.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: June 11, 2024
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Akihiro Kawakita
  • Publication number: 20240182124
    Abstract: Provided is a rubber crawler containing cored bars that is capable of firmly closing a sprocket hole and firmly compacting the earth and sand taken into a groove between rubber lugs when the crawler is on the ground to enhance the traction performance.
    Type: Application
    Filed: November 30, 2023
    Publication date: June 6, 2024
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Shohei SUGAWA
  • Publication number: 20240181816
    Abstract: A tire management apparatus (10) configured to manage a tire mounted on a vehicle, comprises: a data acquisition section (131) configured to acquire data related to a running distance of the vehicle and a wear amount of the tire in a first period; a wear state calculator (132) configured to calculate a wear state value that is a wear rate of the tire or a runnable distance until an end of a wear life of the tire, based on the acquired data; and an evaluation value calculator (133) configured to calculate an evaluation value for the tire, based on comparison between the calculated wear state value and a reference value of the wear state value.
    Type: Application
    Filed: November 26, 2021
    Publication date: June 6, 2024
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Hiroyuki KATSUNO
  • Publication number: 20240185654
    Abstract: The present invention is provided with a time-sequential load data acquisition unit that acquires data on a load of a predetermined loaded item in a time-sequential manner regarding a loading vehicle capable of loading the predetermined loaded item; a unit period setting unit that sets predetermined unit periods of which it is possible to change lengths according to a change in the load; a data division unit that divides time-sequential load data on the load of the loaded item by separating the time-sequential load data according to the unit periods; a representative value calculation unit that calculates respective representative values for each piece of divided data of the time-sequential load data divided by the data division unit; and a tire temperature prediction unit that predicts a temperature of tires mounted on the loading vehicle, at a specific time point, based on the respective representative values.
    Type: Application
    Filed: March 9, 2022
    Publication date: June 6, 2024
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Kenji TOYODA, Kosuke AKIBA