Patents Assigned to The Yokohama Rubber Co., Ltd.
  • Patent number: 12330963
    Abstract: An automatic water faucet apparatus includes a faucet, a detection unit, a hot water storage tank, a first ultraviolet irradiation unit, a display unit, and a control unit. The hot water storage tank heats water supplied to a water supply channel by using a heater, which is not illustrated, and stores hot water. The hot water storage tank is provided inside the faucet and heats water supplied to a second water supply channel. The first ultraviolet irradiation unit disinfects (sterilizes) the hot water stored in the hot water storage tank by irradiating the hot water with ultraviolet rays. The first ultraviolet irradiation unit includes an ultraviolet lamp disposed inside the hot water storage tank, and irradiation of ultraviolet rays to the hot water stored in the hot water storage tank and stop of the irradiation are controlled by the control unit.
    Type: Grant
    Filed: January 7, 2021
    Date of Patent: June 17, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Hiroshi Murayama
  • Patent number: 12325202
    Abstract: To determine the magnitude of variation in predetermined quality in a longitudinal direction of an elongated tire member formed by bonding a plurality of types of constituent members, X-rays are applied to a predetermined length range of a tire member, which is elongated, from a top surface side of the tire member while conveying the tire member in a longitudinal direction using a conveying device to acquire image data based on X-ray transmittance of the predetermined length range. The image data is input into a calculation device. Based on contrast in the image data, the magnitude of variation in the dimension in the width direction of a constituent member in the longitudinal direction is calculated by the calculation device, the constituent member being formed of unvulcanized rubber having a larger mass and a higher content rate of a specific component in the tire member.
    Type: Grant
    Filed: December 26, 2022
    Date of Patent: June 10, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Mitsuo Tsuji, Yuichiro Hisada, Satoshi Onodera, Atsushi Iwai, Kousuke Shimada, Takeshi Yokoji, Kenta Ishii
  • Patent number: 12319103
    Abstract: In a pneumatic tire, a tread average thickness A in a tire width direction region of a center land portion where a center cover layer is disposed, a tread average thickness B in a tire width direction region of the center land portion where the center cover layer is not disposed, and a tread average thickness C in tire width direction regions where second land portions located further on an outer side than the center land portion in a tire width direction and adjacent to the center land portion are defined and formed satisfy a relationship A<B<C.
    Type: Grant
    Filed: December 25, 2019
    Date of Patent: June 3, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Mizuki Kuninaka
  • Patent number: 12319093
    Abstract: In a pneumatic tire, a plurality of first land portions are arrayed adjacent to each other in a tire circumferential direction, and a plurality of second land portions are arrayed adjacent to each other in the tire circumferential direction. Moreover, the first land portions and the second land portions are each arrayed in a staggered manner along a tire equatorial plane. Additionally, the first land portions and the second land portions each include a plurality of through grooves that extend through the land portions and open to a pair of inclined main grooves, and a plurality of blocks defined by the through grooves. The blocks include an innermost center block that is defined as a block closest to the tire equatorial plane. In addition, an edge portion of the innermost center block includes a notch portion that opens to a connection portion of the inclined main grooves.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: June 3, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Shunya Harada
  • Patent number: 12319096
    Abstract: A tire includes a plurality of main lug grooves and a plurality of sub lug grooves that extend in a tire width direction and penetrate a tread surface, and that are arranged at predetermined intervals in a tire circumferential direction. Additionally, the main lug grooves have a maximum groove width Wg1 of 15.0 mm or more and a maximum groove depth of 23.5 mm or more. In addition, the sub lug grooves have a maximum groove width Wg2 that satisfies 0.10?Wg2/Wg1?0.35 with respect to the maximum groove width Wg1 of the main lug grooves. Additionally, at least one of the sub lug grooves is disposed between adjacent ones of the main lug grooves.
    Type: Grant
    Filed: April 16, 2021
    Date of Patent: June 3, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Hiroaki Sato
  • Patent number: 12296623
    Abstract: Provided is a run-flat tire. A first bead filler is disposed on an outer circumferential side of a bead core, a second bead filler is disposed on an outer side in a tire width direction of a turned up portion of the carcass layer along the turned up portion of the carcass layer, and a thickness G on a first reference line of a side reinforcing layer, a thickness G1 on a second reference line of the side reinforcing layer, and a thickness G2 on a third reference line of the side reinforcing layer satisfy the relationships of 0.8×G?G1?1.0×G and 0.5×G?G2?0.7×G.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: May 13, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Ryohei Takemori
  • Patent number: 12281889
    Abstract: Provided are a tire shape measurement device and a method. In a measurement mode in which air is injected into an inside of a tire mounted on a holding portion to inflate the tire and the tire and a non-contact sensor are relatively moved in a tire circumferential direction to detect a shape of a predetermined site of the tire over an entire circumference in the tire circumferential direction by the sensor, a detection unit of the sensor is covered with a cover portion is released. When the air is exhausted from the inside of the tire to an outside and the tire is deflated to remove the tire from the holding portion after the detection of the shape of the tire, a standby mode M1 in which the detection unit is covered with the cover portion is set.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: April 22, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Naoki Akiyama, Satoru Nishio
  • Patent number: 12280617
    Abstract: A pneumatic tire includes sipes disposed in a land portion formed in a tread portion, and pin holes for stud pins disposed in the land portion. The sipes are disposed at positions where a distance Ds from the pin hole and a diameter Dp of the pin hole satisfy (Ds/Dp)?4.0. A sipe in which the distance Ds from the pin hole and the diameter Dp of the pin hole satisfy (Ds/Dp)?5.0 is defined as a pin hole neighboring sipe. A sipe of which the distance Ds from the pin hole is the smallest, among the sipes in which the distance Ds from the pin hole and the diameter Dp of the pin hole satisfy (Ds/Dp)>5.0, is defined as a normal sipe. The pin hole neighboring sipe is formed in a high rigidity shape having higher rigidity than the normal sipe.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: April 22, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Takashi Kidesaki
  • Patent number: 12275275
    Abstract: Provided is a pneumatic tire. In a tire meridian cross-sectional view of an unloaded state in which regular internal pressure is applied, a tire profile between two ground contact edges is constituted by two tire outer side profiles each having a dimension along the tire profile of 20% or more and 35% or less with respect to a dimension between the ground contact edges along the tire profile, and a tire inner side profile other than the two tire outer side profiles, the tire outer side profiles being constituted by at least four curved lines having different shapes.
    Type: Grant
    Filed: September 18, 2020
    Date of Patent: April 15, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Akihiro Ichimura
  • Patent number: 12269298
    Abstract: In a pneumatic tire, an inner shoulder land portion includes shoulder lug grooves that extend in the tire lateral direction. Additionally, an inner second land portion includes the through lug groove that extends through the inner second land portion in the tire lateral direction. A center land portion includes a single circumferential narrow groove extending in the tire circumferential direction and center lug grooves that each open at one end portion to the edge portion on the vehicle width direction inner side of the center land portion and terminate at the other end portion, communicating with a circumferential narrow groove. The shoulder lug groove, the through lug groove, and the center lug groove form one communication lug groove extending continuously from a tire ground contact edge toward a tire equatorial plane.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: April 8, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Masataka Kubota, Noboru Kuwahara
  • Patent number: 12263703
    Abstract: A tire tread pattern includes: first sipes in a first land portion between first and second circumferential main grooves; first chamfered surfaces in which a tread surface of the first land portion is inclined toward a first circumferential main groove side in an end portion in a width direction, the first sipes opening to the first chamfered surfaces; second sipes in a second land portion on an opposite side of the first land portion with respect to the second circumferential main groove; and second chamfered surfaces in which a tread surface of the second land portion is inclined toward a second circumferential main groove side in an end portion in the width direction, the second sipes opening to the second chamfered surfaces. The first and second chamfered surfaces are greater in length in the circumferential direction than in the width direction.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: April 1, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Kenichi Matsumoto
  • Patent number: 12257796
    Abstract: A method for manufacturing a pneumatic tire includes: using a first cover material and a second cover material in a belt cover material and spirally winding the first cover material from a second side to a shoulder region on a first side; spirally winding the second cover material from the first side to a shoulder region on the second side; spirally winding the first cover material from the shoulder region on the first side to a tire equatorial plane; and spirally winding the second cover material from the shoulder region on the second side to the tire equatorial plane, the first cover material and the second cover material being layered in a region between a portion of the first cover material that is located on the second side and a portion of the second cover material that is located on the first side, thereby forming an overlapping portion.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: March 25, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Noriyoshi Koyama
  • Patent number: 12251966
    Abstract: A run-flat tire includes a reinforcing rubber layer with a roughly crescent-shaped meridian cross-section disposed in sidewall portions at both sides in a tire width direction. The tread portion is provided formed of a tread rubber that includes a cap tread rubber and an undertread rubber disposed on an inner side of the cap tread rubber in a tire radial direction and having a higher hardness than the cap tread rubber. In a meridian cross-section, a gauge of the undertread rubber on a shoulder land portion on an outer side of an outermost main groove located furthest outward in the tire width direction is thicker than a gauge of the undertread rubber of a center land portion closest to a tire equatorial plane.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: March 18, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Shunya Harada
  • Patent number: 12251967
    Abstract: In a tire tread pattern, inclined grooves extend from a starting end in a center region including an equator toward both sides in a width direction and toward the same side in a circumferential direction to a pattern end. A periphery distance from the equator to the pattern end at an outer side in the width direction being 100%, in ranges separated from the starting end by ?35%, from >35% to ?50%, from >50% to ?70% and from >70% to ?100%, an inclination angle of the inclined grooves relative to the circumferential direction is from >40° to ?50°, from >50° to ?65°, from >65° to ?80°, and from >80° to ?90°, respectively. A circumferential-direction distance from the starting end to a terminating end of the inclined grooves is 60% to 90% of a width-direction distance.
    Type: Grant
    Filed: April 8, 2021
    Date of Patent: March 18, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Kenta Homma
  • Patent number: 12240274
    Abstract: A tire includes shoulder main grooves, circumferential narrow grooves disposed between the shoulder main grooves and each having a groove width of 0.5 mm to 3.0 mm, and five or more rows of land portions defined by the shoulder main grooves and the circumferential narrow grooves. A first land portion includes S-shaped sipes that extend through the first land portion in a width direction. A second land portion includes S-shaped sipes that extend through the second land portion in the width direction, and the second land portion is a rib including a continuous road contact surface in a tire circumferential direction when the tire comes into contact with the ground. Connection portions of the S-shaped sipes of the first and second land portions with respect to the circumferential narrow grooves are at identical positions in the tire circumferential direction.
    Type: Grant
    Filed: September 23, 2021
    Date of Patent: March 4, 2025
    Assignee: The Yokohama Rubber Co., LTD
    Inventor: Daisen Hayashi
  • Patent number: D1065024
    Type: Grant
    Filed: September 29, 2023
    Date of Patent: March 4, 2025
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventor: Takuya Inoue
  • Patent number: D1065033
    Type: Grant
    Filed: March 30, 2023
    Date of Patent: March 4, 2025
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Hiroki Endo, Noboru Kuwahara
  • Patent number: D1065035
    Type: Grant
    Filed: March 30, 2023
    Date of Patent: March 4, 2025
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Hiroki Endo, Noboru Kuwahara
  • Patent number: D1065042
    Type: Grant
    Filed: July 28, 2023
    Date of Patent: March 4, 2025
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Yosuke Sakamoto, Noboru Kuwahara
  • Patent number: D1068635
    Type: Grant
    Filed: July 28, 2023
    Date of Patent: April 1, 2025
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Yosuke Sakamoto, Noboru Kuwahara