Patents Assigned to The Yokohama Rubber
  • Patent number: 12214621
    Abstract: A tread pattern of a pneumatic tire includes a pair of circumferential grooves and a plurality of siped lug grooves extending in a tire width direction between the pair of circumferential grooves and disposed at intervals in the tire circumferential direction. Each of the siped lug grooves includes a lug groove extending from a first circumferential groove of the pair of circumferential grooves and closed, and a sipe extending from a closed end of the lug groove toward a second circumferential groove and connected to the second circumferential groove. The plurality of siped lug grooves include at least one first siped lug groove extending while bending with an extension direction of the lug groove differing from an extension direction of the sipe, and at least one second siped lug groove extending linearly with the extension direction of the lug groove aligning with the extension direction of the sipe.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: February 4, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Kenichi Matsumoto
  • Patent number: 12214629
    Abstract: Provided is a pneumatic tire. A band-like sound absorptive member is fixed to the inner surface of a tread portion along the tire circumferential direction. An end portion in the tire width direction of the sound absorptive member is located on the outer side in the tire width direction with respect to a shoulder main groove located on the outermost side in the tire width direction. A width W1 of the sound absorptive member in the tire width direction and a tread development width TDW of the tread portion satisfy a relationship of 0.65?(W1/TDW)?0.90. The width W1 of the sound absorptive member and a belt width W2 of a first belt ply having the maximum width of a belt layer satisfy a relationship of 0.70?(W1/W2)?0.95.
    Type: Grant
    Filed: April 12, 2021
    Date of Patent: February 4, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Yuki Nagahashi, Noriyoshi Koyama
  • Patent number: 12214627
    Abstract: A pneumatic tire includes, on a surface of a side rubber provided on sidewall portions, a two-dimensional code in which a dot pattern is formed by two types of gray scale elements distinguishable from each other by irregularities on the surface. Dot holes are formed in the two-dimensional code, corresponding to dark elements of the gray scale elements. The side rubber is a diene rubber including butadiene rubber, and when A is a blended amount of the butadiene rubber relative to 100 parts by mass of the diene rubber contained in the side rubber and when B is a blended amount of carbon, a ratio A/B and a hole depth D (mm) from an opening of the dot hole to a hole bottom satisfies a relationship of 1.1?(A/B)/D?6.0.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: February 4, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Takashi Hoshiba, Tatsuro Shinzawa, Atsuhito Nakano
  • Patent number: 12214565
    Abstract: A pneumatic tire that is vulcanized using a bladder provided with a coating layer formed by a release agent, a noise absorber 6 being fixed on an inner surface of a tread portion 1 along a tire circumferential direction via an adhesive layer 7, and a thickness of the release agent detected by an electron microscope is 0.1 ?m to 100 ?m at least in a fixation region for the noise absorber 6.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: February 4, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Takashi Hoshiba, Masahiro Naruse
  • Patent number: 12215489
    Abstract: An automatic faucet device includes one of a first detection unit, a second detection unit, and a third detection unit selected as a detection unit and attached to a detection unit attachment portion. Selecting the first detection unit obtains an automatic faucet device using a non-contact sensor, selecting the second detection unit obtains an automatic faucet device using a contact sensor, or selecting the third detection unit obtains an automatic faucet device using both the non-contact sensor and the contact sensor.
    Type: Grant
    Filed: January 7, 2021
    Date of Patent: February 4, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Hiroshi Murayama
  • Patent number: 12214624
    Abstract: A tread portion of a pneumatic tire includes: an intermediate land portion being delimited by an inner circumferential main groove and an outer circumferential main groove on one side in a tire lateral direction across a tire center line as a boundary; and a side land portion adjoining the outer circumferential main groove and being provided outward of the outer circumferential main groove in the tire lateral direction. At least one land portion of the intermediate land portion and the side land portion has a swelling profile line. In a region of the land portion, a composite sipe is provided. In the composite sipe, a first sipe extending linearly in a sipe depth direction and a second sipe (S2) extending in a wave manner in the sipe depth direction are connected. The second sipe in the composite sipe is disposed so as to be connected to the outer circumferential main groove.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: February 4, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Toyoaki Endo
  • Patent number: 12214622
    Abstract: A pneumatic tire includes a land portion defined by two circumferential main grooves extending in the circumferential direction, lug grooves in the land portion, and a sipe between adjacent lug grooves. An outer side edge of the land portion in the width direction has a zigzag shape, and an inner side edge of the land portion in the width direction has a straight shape. The sipe extends continuously from the outer side edge to the inner side edge, and the sipe has a Z-shape with two bent portions, and a ratio of a distance in the width direction between a bent portion closer to a center line passing through a midpoint position of the land portion in the width direction and the center line to a width of the land portion in the width direction being 0 to 0.40.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: February 4, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Toyoaki Endo
  • Patent number: 12214628
    Abstract: A pneumatic tire includes a run-flat reinforcing layer disposed on an inner side in a width direction of a carcass layer, and a second filler disposed between a turned back portion of the carcass layer and a rim cushion rubber. Additionally, a point on a tire outer circumferential surface is defined, the point is located at a position corresponding to 150% of a rim flange height from a measurement point of a rim diameter of a specified rim, a perpendicular line is defined, and the perpendicular line is drawn from the point to a tire inner circumferential surface. A rubber gauge (G1) of the run-flat reinforcing layer on the perpendicular line, and a rubber gauge (G2) of a region from the turned back portion of the carcass layer to a tire outer surface have the relationship 0<G1/G2?0.65.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: February 4, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Saiko Uchizawa
  • Patent number: 12218417
    Abstract: To improve quality of a radome using a cyanate ester resin for a skin layer. A radome is formed of a multilayer structure in which a plurality of skin layers are layered on a surface of a core member. The plurality of skin layers include a first fiber reinforced plastic layer containing the cyanate ester resin and a fiber material and a second fiber reinforced plastic layer containing an epoxy resin and a fiber material. The second fiber reinforced plastic layer is disposed at a position in contact with the surface of the core member. A proportion of a thickness of the second fiber reinforced plastic layer to a thickness of all of the skin layers is preferably 50% or less.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: February 4, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Teruki Miyazaki, Yukihiro Kamimura, Tomohiro Ito
  • Patent number: 12214625
    Abstract: A wear-condition-sensing device includes an element configured to generate voltage based on deformation of a tread portion during tire rotation, a voltage detection unit configured to detect the voltage generated by the element, a storage area configured to store waveform data over time of the voltage detected by the voltage detection unit, a calculation unit configured to calculate an index value of voltage change based on the waveform data stored in the storage area, and a determination unit configured to determine a progress condition of wear of the tread portion by comparing the index value calculated by the calculation unit with reference information.
    Type: Grant
    Filed: January 15, 2021
    Date of Patent: February 4, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Masahiro Naruse, Jun Matsuda, Heishiro Fudo, Eiji Shinohara, Shinya Ichise, Hiroyuki Tobari, Yuki Ono
  • Patent number: 12208651
    Abstract: A method of manufacturing a tire, a forming system for the tire, and the tire are provided. A preceding carcass cord from one feeding unit is used to form a carcass layer while being fed to a forming drum, and a leading edge portion of a next carcass cord is paid out from another feeding unit in advance. At a time when a predetermined length of the preceding carcass cord is fed, a splice mechanism is used to join the leading edge portion of the next carcass cord to the preceding carcass cord to make the leading edge portion of the next carcass cord continuous with the preceding carcass cord. Then, with the next carcass cord fed to the forming drum, formation of the carcass layer is continued to complete the carcass layer.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: January 28, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Satoru Nishio
  • Patent number: 12208646
    Abstract: A tire includes a mounting direction indicator indicating a tire mounting direction with respect to a vehicle. Additionally, the tire includes a first circumferential groove and a second circumferential groove extending intermittently or continuously in a tire circumferential direction. Additionally, the second circumferential groove is located further on an inner side than the first circumferential groove in a vehicle width direction in a state in which the tire is mounted on a vehicle. In addition, a distance D1 from the tire equatorial plane to the groove center line of the first circumferential groove and a distance D2 from the second circumferential groove to the groove center line have the relationship D1<D.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: January 28, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Takeshi Kaneko
  • Patent number: 12202299
    Abstract: A tread pattern of a pneumatic tire includes two or more circumferential main grooves in a half region demarcated by the equatorial plane, and land portions defined by the circumferential main grooves. A center land portion closest among the land portions to the equatorial plane includes a center sipe extending in the width direction, the center sipe is a composite sipe including a two-dimensional portion and three-dimensional portions provided on both sides of the two-dimensional portion in the width direction, a middle land portion that is adjacent to an outer side of the center land portion in the width direction includes a middle sipe extending in the width direction, and the middle sipe is a composite sipe comprising a two-dimensional portion provided on an inner side in the width direction and a three-dimensional portion provided on an outer side of the two-dimensional portion in the width direction.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: January 21, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Toyoaki Endo
  • Patent number: 12202298
    Abstract: In a tread pattern of a tire, a main groove side of a shoulder lug groove in a side of a first circumferential main groove inclines with respect to the width direction. In each of first intermediate lug grooves and inner lug grooves, a direction from one side toward the other side in the width direction is inclined to a side identical to a side to which the main groove side is inclined. The first intermediate lug grooves overlap with extension lines of each of the shoulder lug grooves extending from a closed end of each of the shoulder lug grooves along an inclination direction of the main groove side toward each of closed ends of the inner lug grooves. A second intermediate lug groove extends between two of the extension lines adjacent in the circumferential direction, in a direction along the extension lines.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: January 21, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Kenichi Matsumoto
  • Patent number: 12202297
    Abstract: A pneumatic tire includes fins disposed on sidewall surfaces of blocks and extending in a tire circumferential direction. Further, a plane is local and is defined to include a ground contact edge of the first and second blocks and an arc connecting opening end portions of three lug grooves defining the first and second blocks. At this time, the fins of the first and second blocks extend sidewalls of the lug grooves further toward an outer side in a tire width direction than the plane via one circumferential edge portions of the blocks. Furthermore, the projection amount of the fins with respect to the plane tapers from the one circumferential edge portions toward other circumferential edge portions of the blocks.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: January 21, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Masashi Tamura
  • Patent number: 12194702
    Abstract: In a rubber temperature measuring device, a temperature sensor and a biasing member are disposed in an installation hole formed in a molding surface of a mold. The temperature sensor is biased by the biasing member and a temperature detecting unit at a tip end projects from the molding surface and is not in contact with the mold. The mold is closed and vulcanized in a state in which a green tire making contact with the temperature detecting unit presses the temperature sensor against biasing force of the biasing member and an opening portion of the installation hole is blocked by the temperature detecting unit. Temperature data detected by the temperature detecting unit is input to a control unit disposed outside the mold through a communication line extending in a communicating hole communicating with the installation hole.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: January 14, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Yukihisa Takahashi
  • Patent number: 12187077
    Abstract: A tire includes a mounting direction indicator that indicates a tire mounting direction with respect to a vehicle. The tire includes a first circumferential groove and a second circumferential groove extending intermittently or continuously in a tire circumferential direction. Additionally, the second circumferential groove is located further on an inner side than the first circumferential groove in a vehicle width direction in a state in which the tire is mounted on a vehicle. Additionally, a groove volume V1 of the first circumferential groove and a groove volume V2 of the second circumferential groove have the relationship V1<V2.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: January 7, 2025
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Takeshi Kaneko
  • Patent number: 12179515
    Abstract: A pneumatic tire tread pattern includes, on a first side in a width direction relative to a tire centerline, first lug grooves in a shoulder land portion extending from an outer side in the width direction toward and connecting with a shoulder side main groove; and second lug grooves in a middle land portion between the shoulder side main groove and a center side main groove, the second lug grooves extending from a portion of the shoulder side main groove between connection positions of circumferentially adjacent first lug grooves with the shoulder side main groove, toward the center side main groove, and being closed within the middle land portion. The first lug grooves are inclined, at the connection position, to one side in the circumferential direction relative to the width direction. The second lug grooves are inclined to be parallel with an inclination direction of the first lug groove.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: December 31, 2024
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Kotaro Matsushita
  • Patent number: D1059253
    Type: Grant
    Filed: September 23, 2022
    Date of Patent: January 28, 2025
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Kenichi Sato, Mayuko Hasegawa
  • Patent number: D1059254
    Type: Grant
    Filed: September 23, 2022
    Date of Patent: January 28, 2025
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Kenichi Sato, Mayuko Hasegawa