Patents Assigned to The Yokohama Rubber Co., Ltd.
  • Patent number: 11787238
    Abstract: A pneumatic tire includes a plurality of protrusion portions extending along a tire side surface of a tire side portion longitudinally intersecting a tire circumferential direction or a tire radial direction and being provided at intervals in the tire circumferential direction, and each of the protrusion portions includes an external contour that includes a plurality of main external contour portions having different curvatures, and a connection portion connecting between the main external contour portions, the external contour projecting from the tire side surface in a cross-sectional shape in a longitudinal direction.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: October 17, 2023
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Yuji Kodama
  • Patent number: 11787923
    Abstract: A rubber composition of the present technology contains: diene rubber (A) containing a predetermined amount of specific conjugated diene rubber represented by a predetermined formula; silica having a CTAB adsorption specific surface area in a predetermined range; and a silane coupling agent represented by a predetermined formula.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: October 17, 2023
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Hiroki Sugimoto, Shuichi Nakano, Makoto Ashiura
  • Patent number: 11780267
    Abstract: In a pneumatic tire, at least one carcass layer mounted between a pair of bead portions is formed from a carcass cord formed of an organic fiber cord having filament bundles of organic fibers intertwined together, a fineness based on corrected mass of the carcass cord is from 4000 dtex to 8000 dtex, an intermediate elongation of the carcass cord at a sidewall portion under 1.0 cN/dtex load is from 3.3% to 4.2%, and a ratio G/R of an interlayer rubber gauge G between a body portion and a folded back portion to a cord diameter R of the carcass cord, at a contact region where the body portion and the folded back portion are in contact in the carcass layer, is from 0.50 to 0.60.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: October 10, 2023
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Takamitsu Chaya
  • Patent number: 11781525
    Abstract: Provided is a power generation system. The power generation system comprises: a pneumatic tire; a wheel on which the pneumatic tire is mounted; and at least one generator wind turbine attached to the pneumatic tire and/or the wheel in a cavity defined by the pneumatic tire and the wheel. The generator wind turbine is configured to lay flat or stand upright.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: October 10, 2023
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Atsushi Tanno
  • Patent number: 11766891
    Abstract: A pneumatic tire includes an innerliner and a tie rubber. A rubber composition for an innerliner constituting the innerliner includes from 25 to 75 parts by mass of a carbon black having a nitrogen adsorption specific surface area from 25 to 95 m2/g, from 1 to 13 parts by mass of a resin, and from 0.1 to 1.8 parts by mass of zinc oxide, per 100 parts by mass of a diene rubber containing from 50 to 100 parts by mass of halogenated butyl rubber, and the dynamic storage modulus at ?45° C. of the rubber composition is not greater than 600 Mpa.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: September 26, 2023
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Katsunori Shimizu, Tsuyoshi Nomaguchi
  • Patent number: 11767118
    Abstract: A foot pedal, which swings a waste flap from a closed position to an opened position, is disposed near a section on a floor of an aircraft lavatory unit directly below a waste compartment. A foot pedal support mechanism is configured such that the foot pedal at the upper limit position is inclined and supported with a foot pedal rear end located directly below the waste compartment being located above a foot pedal front end away from the waste compartment and that the foot pedal rear end swings in a vertical direction by using the foot pedal front end as a fulcrum.
    Type: Grant
    Filed: January 7, 2021
    Date of Patent: September 26, 2023
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Hiroshi Murayama, Mitsuaki Takeda
  • Patent number: 11766842
    Abstract: In a method for manufacturing a pneumatic tire, a laminated body is formed of a film containing a thermoplastic resin or elastomer, and rubber sheets laminated on surfaces of the film. A winding starting end of the inner rubber sheet is on a side opposite to a winding direction of the laminated body with respect to an end of the film; an end of the outer rubber sheet at the winding starting end is at the same position as the end of the film or is positioned on a side of the winding direction of the laminated body with respect to the end of the film. An outer surface of the outer rubber sheet at the winding starting end and an inner surface of the inner rubber sheet of a winding finishing end are brought into contact by overlapping and bonding the winding starting end and the winding finishing end.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: September 26, 2023
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Hideki Seto
  • Patent number: 11760130
    Abstract: A run-flat tire includes: sipes formed in blocks; a belt reinforcing layer on an outer side in a radial direction of a belt layer; and a side reinforcing rubber in sidewall portions, wherein a density of the sipes in a center block is from 0.10 cords/mm or greater to 0.30 cords/mm or smaller, the belt reinforcing layer includes a center reinforcing portion in which more center reinforcing portions are stacked at a center region than at positions other than the center region, a width Wc of the center reinforcing portion is within 0.5 Gr?Wc?2.5 Gr with respect to a thickness Gr of the side reinforcing rubber at the tire maximum width position, and an average width of the width Wc of the center reinforcing portion is from 50% or greater to 90% or smaller of a width of the center block.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: September 19, 2023
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Shunya Harada
  • Patent number: 11760133
    Abstract: A pneumatic tire includes shoulder lands and a center land, defined by main grooves on both sides of an equator in a zigzag pattern along a circumferential direction, are defined in a tread. Shoulder lug grooves extending in a width direction are formed in each of the shoulder lands. First and second center lug grooves, which extend from the shoulder lug grooves across each of the main grooves and are inclined at an angle of 45°-70° with respect to the width direction, are disposed in the center land. The first center lug groove terminates at the equator, and the second center lug groove terminates without reaching the equator. The first and second center lug grooves are alternately disposed in the circumferential direction. Connecting grooves inclined in an opposite direction to an inclination direction of the center lug grooves to connect the center lug grooves are formed in the center land.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: September 19, 2023
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Yousuke Sakamoto
  • Patent number: 11753767
    Abstract: In a method of manufacturing a rubber coated twisted wire cord, when an outer circumferential surface of a twisted wire cord that is moving from an unreeling unit to a winding unit is coated with unvulcanized rubber extruded by a rubber extruder, by a coating unit disposed between the unreeling unit and a winding unit, in a state of additional tension being imparted on the moving twisted wire cord by a tension imparting unit disposed at a nearby position on an upstream side from the coating unit in a moving direction of the twisted wire cord, the unvulcanized rubber coats the outer circumferential surface of the twisted wire cord in this state to continuously manufacture a rubber coated twisted wire cord.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: September 12, 2023
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Satoru Nishio
  • Patent number: 11752806
    Abstract: A pneumatic tire is provided. Center blocks in a center region are in pairs across grooves inclined with respect to a circumferential direction. Each of the center blocks extends from one side to the other of an equator and includes a notch defined by a first and second walls connected in a V-shape in a tread contact surface. The first wall extends within ±20° of the circumferential direction, the second wall extends within ±10° of a lateral direction, an average angle of sipes formed in one of the center blocks and the shoulder blocks is smaller than or equal to 90°±10° with respect to the equator for a first region, smaller than or equal to 130°±10° for a second region, and smaller than or equal to 70°±10° for a third region, and each of the sipes includes at least one bent portion.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: September 12, 2023
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Yuhei Suzuki
  • Patent number: 11752801
    Abstract: In order to improve shock burst resistance performance while suppressing a decrease in separation resistance performance, a pneumatic tire includes a tread portion, a belt layer, and a belt cover layer. The belt layer is disposed in the tread portion. The belt cover layer is disposed on an outer side in a tire radial direction of the belt layer. The belt cover layer includes: two layers of full covers disposed between shoulder regions on both sides in a tire width direction and layered in the tire radial direction; and a narrow cover formed with a width in the tire width direction narrower than widths of the full covers. The narrow cover is disposed at a position between the two layers of the full covers and on an inner side in the tire width direction than the shoulder regions.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: September 12, 2023
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Noriyoshi Koyama
  • Patent number: 11752805
    Abstract: In a pneumatic tire including main grooves extending in a tire circumferential direction in a tread portion, and including a sipe extending in a tire lateral direction on a rib defined by the main grooves, the sipe includes an edge on a leading side and an edge on a trailing side, chamfered portions shorter than a sipe length of the sipe are formed on respective edges, non-chamfered regions on which no other chamfered portion exists exist on portions opposing to respective chamfered portions in the sipe, a maximum depth x (mm) of the sipe and a maximum depth y (mm) of the chamfered portion satisfy x×0.1?y?x×0.3+1.0, and a sipe width of the sipe is constant in a range from an end portion positioned inside in a tire radial direction of the chamfered portion to a groove bottom of the sipe.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: September 12, 2023
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Hiraku Kouda, Tatsuro Shinzawa, Takanori Uemura
  • Patent number: 11752717
    Abstract: Provided are a tire vulcanization device and a tire vulcanization method. A container ring is disposed on an outer circumferential side of segments mounted on outer circumferential surfaces of sector molds. A bolster plate is disposed above an upper plate mounted on an upper surface of an upper side mold. A green tire is placed in a sideways state on a lower side mold mounted on an upper surface of a lower plate. In a state where the bolster plate is moved downward by a pressurizing mechanism and maintained in a mold closed position, a container ring held slidably in a vertical direction with respect to the bolster plate by a connecting body is moved downward by pressurizing fluid supplied, and the sector molds are assembled in an annular shape to be closed with the upper side mold pressed against upper surfaces of the sector molds.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: September 12, 2023
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Yukihisa Takahashi
  • Patent number: 11745455
    Abstract: In a method for producing an unvulcanized ring-shaped rubber member a front edge portion of a band-like rubber member conveyed by a conveyor is disposed on an outer circumferential surface of a forming drum, and the forming drum is rotated to wind a length of the band-like rubber member on the outer circumferential surface and a rear edge portion is held by rear edge holding portions arranged side by side in a width direction. Using distribution data on a length of the band-like rubber member in the width direction, an amount of movement of movement portions in a front-rear direction is controlled to adjust the degree of elongation around the held portion of the rear edge portion in the front-rear direction that is held by each of the rear edge holding portions, and the front and rear edge portions are bonded to produce a ring-shaped rubber member.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: September 5, 2023
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Masatomo Kondo, Chihiro Zenyoji, Teruaki Kunimori, Jyumpei Oishi, Haruhisa Hasegawa
  • Patent number: 11746933
    Abstract: A hydrogen-filling hose includes reinforcing layers provided coaxially layered between an inner surface layer and an outer surface layer that are coaxially layered. The inner surface layer is formed of a thermoplastic resin and has a gas permeation coefficient of dry hydrogen gas of 1×10?8 cc·cm/cm2·sec.·cmHg or less at 90° C. A flow path formed by the inner surface layer has a diameter of 10 mm or more and 25 mm or less. The reinforcing layers includes four layers or more and eight layers or less, and each of the reinforcing layers has a spiral structure that is formed by spirally winding a metal wire material. Pricking holes extending through the outer surface layer in a thickness direction are dispersedly provided therein.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: September 5, 2023
    Assignee: The Yokohama Rubber Co., Ltd
    Inventor: Ikuma Yusa
  • Patent number: D999145
    Type: Grant
    Filed: August 17, 2021
    Date of Patent: September 19, 2023
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventor: Takuya Inoue
  • Patent number: D999720
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: September 26, 2023
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Makoto Ishii, Yoshifumi Koishikawa
  • Patent number: D1000361
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: October 3, 2023
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Reika Tokunaga, Kotaro Iwabuchi
  • Patent number: D1001720
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: October 17, 2023
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Mizuki Kuninaka, Noboru Kuwahara