Patents Assigned to Yokohama Rubber Co., Ltd.
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Patent number: 11926177Abstract: In a tire having a specified mounting direction, groove area ratios Rin and Rout in ground contact regions on the vehicle inner and outer sides, respectively, satisfy Rin>Rout, average land portion areas Ain and Aout of intermediate regions Min and Mout on the vehicle inner and outer sides, respectively satisfy Ain<Aout, the number of blocks Nin, Nout in the intermediate regions Min, Mout, respectively, satisfy Nin?1.5×Nout, total sipe lengths Sin, Sout in the intermediate regions Min, Mout, respectively, satisfy Sin<Sout, and sipes formed in the intermediate region Mout have a three-dimensional structure in a range of 70% or more of a sipe length.Type: GrantFiled: March 1, 2021Date of Patent: March 12, 2024Assignee: The Yokohama Rubber Co., Ltd.Inventor: Kenji Horiuchi
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Patent number: 11903536Abstract: A liquid soap dispenser having a press-type nozzle that dispenses liquid soap from the nozzle by being pressed by hand includes a dispenser body, a nozzle, a pump, and the like. The dispenser body is supported inside an upper storage portion by a lower bracket and an upper bracket. A connecting member connects a vertically moving member and the nozzle. When a user places a hand below the nozzle, a human body detection unit detects the hand, and a control unit causes a motor to rotate in a forward direction and raise the vertically moving member from a lower limit position to an upper limit position; and by raising the nozzle from the lower limit position to the upper limit position via the connecting member, liquid soap is automatically dispensed from the nozzle.Type: GrantFiled: December 27, 2018Date of Patent: February 20, 2024Assignee: The Yokohama Rubber Co., LTD.Inventor: Kazushi Nakao
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Patent number: 11897291Abstract: A tread pattern of a pneumatic tire includes one center continuous land portion and two intermediate continuous land portions that are divided by four circumferential main grooves and that are not provided with lug grooves. Edges on both sides of one center main groove include groove chamfered portions having a chamfered width changing in the circumferential direction in a zigzag shape. In the regions of the intermediate continuous land portions, first sipes extending inward in the lateral direction from shoulder main grooves of the main grooves, which are positioned on outer sides in the lateral direction, are provided. The first sipes each include a sipe main body portion having a constant distance between sipe wall surfaces on a sipe bottom side and a sipe chamfered portion inclined so that the sipe wall surfaces are open toward the tread surface.Type: GrantFiled: June 30, 2022Date of Patent: February 13, 2024Assignee: The Yokohama Rubber Co., LTD.Inventor: Ryouichi Tomomatsu
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Patent number: 11897288Abstract: In a pneumatic tire, a block includes recess/protrusions on a road contact surface. Additionally, a recess/protrusion height of the recess/protrusions is from 0.1 mm to 1.0 mm. A width of the recess/protrusions is from 0.1 mm to 0.8 mm. A recess/protrusion region is where an arrangement interval between adjacent recess/protrusions is not greater than 1.2 mm. A smooth region other than the recess/protrusion region has an arithmetic mean roughness of the road contact surface of the block not greater than 50 ?m. A lateral length of the road contact surface of the block in a tire lateral direction is defined. In this case, the block includes the recess/protrusion region and the smooth region in an optional cross-section in a lateral range of not less than 40% of a lateral length of the road contact surface of the block.Type: GrantFiled: May 22, 2018Date of Patent: February 13, 2024Assignee: The Yokohama Rubber Co., LTD.Inventor: Isamu Kishizoe
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Patent number: 11897218Abstract: Provided are a cleaning device and a method for cleaning a vulcanization mold. At the time of cleaning a molding surface of a vulcanization mold by irradiating with a laser beam from a laser head, an inert gas is supplied from a supply nozzle and an irradiation range of the molding surface irradiated with the laser beam is brought into an atmosphere of the inert gas.Type: GrantFiled: November 16, 2018Date of Patent: February 13, 2024Assignee: The Yokohama Rubber Co., LTD.Inventors: Mitsuo Tsuji, Yoshinori Izumi
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Patent number: 11890899Abstract: A pneumatic tire includes a planar-shaped receiver coil in a cavity region, and configured to receive a magnetic field through a carcass ply layer and generate a signal, and an element to receive power converted from the signal. A receiving region of the receiver coil is interposed between an outermost side of a bead core in the radial direction and an innermost side of a belt layer in the radial direction, and the receiving region faces in the width direction. When a maximum dimension of the receiving region along the radial direction of the receiver coil is a length D1, a distance from the receiving region to a nearest portion of the bead core to the receiving region is L1, and a distance from the receiving region to a nearest portion of the belt layer to the receiving region is L2, relationships L1>(D1/4) and L2>(D2/4) are satisfied.Type: GrantFiled: August 15, 2019Date of Patent: February 6, 2024Assignee: The Yokohama Rubber Co., LTD.Inventor: Atsushi Tanno
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Patent number: 11890897Abstract: A tread pattern of a pneumatic tire includes circumferential main grooves, a land portion defined by the circumferential main grooves in the lateral direction, and sipes at intervals in a circumferential direction, the sipes connecting the circumferential main grooves with each other. Each of the sipes has a peak-like shape protruding to a first side in the circumferential direction. When, in a profile cross-section of the tread portion taken along the lateral direction, an arc passing through two land portion edge points at which a tread surface of the land portion is connected with groove wall surfaces of the circumferential main grooves and having a center point positioned on the equator line is set to a standard profile line, a profile line formed by the tread surface of the land portion is a swelling profile line protruding outward of the standard profile line in a radial direction.Type: GrantFiled: March 26, 2019Date of Patent: February 6, 2024Assignee: The Yokohama Rubber Co., LTD.Inventor: Toyoaki Endo
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Patent number: 11890898Abstract: A pneumatic tire is provided. A bead filler is disposed on an outer circumferential side of each bead core in bead portions, a side reinforcing layer having a crescent-shaped cross-section is disposed on an inner side in a tire width direction of a carcass layer in a sidewall portion, and as physical properties of a rubber that constitutes the side reinforcing layer and a rubber that constitutes the bead filler, a modulus at 100% elongation is in a range from 8.4 MPa to 10.2 MPa, a tan ? at 60° C. is in a range from 0.04 to 0.08, and JIS hardness at 20° C. is in the range from 75 to 79.Type: GrantFiled: October 10, 2019Date of Patent: February 6, 2024Assignee: The Yokohama Rubber Co., LTD.Inventor: Ryohei Takemori
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Patent number: 11884109Abstract: In a pneumatic tire, a pair of first center blocks and two or more second center blocks are alternately arranged in the tire circumferential direction to form a block row of a center land portion. Additionally, the block row of the center land portion is obtained by coupling in a row in the tire circumferential direction and in a zigzag shape via coupling grooves each including a groove bottom portion shallower than first and second inclined lug grooves.Type: GrantFiled: June 25, 2020Date of Patent: January 30, 2024Assignee: The Yokohama Rubber Co., Ltd.Inventor: Hiroyuki Yoshida
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Patent number: 11884112Abstract: A tire failure prediction system includes first and second temperature sensors to detect temperatures of first and second tires mounted on a traveling vehicle, a temperature acquisition unit to acquire the temperatures detected by the first and second temperature sensors, and a determination unit to determine, based on the temperatures acquired, a possibility of failure for the first and second tires. The vehicle includes axles on which the tires are mounted. The first and second tires are mounted on an identical axle of the vehicle. Mounting positions of the first and second tires are symmetrical on the identical axle. The determination unit determines that the first tire has a possibility of failure where the temperature of the first tire is greater than a predetermined threshold, and a difference between the temperatures of the first and second tires is greater than a predetermined first temperature threshold.Type: GrantFiled: December 12, 2019Date of Patent: January 30, 2024Assignee: The Yokohama Rubber Co., LTD.Inventor: Hiroshi Iizuka
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Patent number: 11878482Abstract: Provided are a tire-trimming device and method. The method includes: detecting a profile of a tire outer surface and a position thereof by using a profile sensor while rotating the tire; inputting data detected by the profile sensor into a control unit; when removing the unnecessary rubber components, selecting, from among a plurality of different types of the trimming tool, a trimming tool which is of a type set in the control unit in advance for use in a location on which the unnecessary rubber components are formed; moving the selected trimming tool and the tire relative to one another on the basis of the data detected by the profile sensor; and positioning a tip end section of the trimming tool along the detected profile of the tire outer surface.Type: GrantFiled: May 8, 2015Date of Patent: January 23, 2024Assignee: The Yokohama Rubber Co., LTD.Inventors: Kensuke Matsumura, Masayuki Watanabe, Haruhisa Hasegawa
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Patent number: 11872849Abstract: In a stud pin, a flange contour shape of a lower flange is an anisotropic shape in which, among imaginary rectangles circumscribing the contour shape, the smallest rectangle includes short sides and long sides having different lengths. The flange contour shape includes first recess portions on each of portions of the flange contour shape extending along the short sides, the first recess portions being curved toward a centroid of the flange contour shape, and the flange contour shape includes a second recess portion on portions of the flange contour shape extending along the long sides, the second recess portions being curved toward the centroid of the flange contour shape. A body contour shape of a body portion is a polygonal shape including vertex angles in a same number as the first and second recess portions, and the vertex angles are disposed facing the first and second recess portions.Type: GrantFiled: April 22, 2019Date of Patent: January 16, 2024Assignee: The Yokohama Rubber Co., LTD.Inventor: Isamu Kishizoe
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Patent number: 11872848Abstract: In a pneumatic tire, a groove opening portion of an inner side shoulder main groove and a groove opening portion of an inner side center main groove have edge portions with a straight shape. A groove opening portion of an outer side center main groove has an edge portion chamfered in a zigzag shape. A groove width Wg1 of the inner side shoulder main groove, a groove width Wg2 of the inner side center main groove, and a groove width Wg3 of the outer side center main groove have a relationship Wg1<Wg3 and Wg2<Wg3.Type: GrantFiled: January 7, 2019Date of Patent: January 16, 2024Assignee: The Yokohama Rubber Co., LTD.Inventor: Keisuke Nakazaki
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Patent number: 11865869Abstract: Provided is a pneumatic tire. Center blocks provided in a center region of a tread portion are arrayed and form pairs across inclined grooves that are inclined with respect to a tire circumferential direction. Each one of the center blocks extends across a tire equator from one side to the other side of the tire equator. Each one of the center block includes a cut formed of a first wall and a second wall connected in a V-shape in a tread surface. The first wall extends at an angle within ±20° with respect to the tire circumferential direction in the tread surface, and the second wall extends at an angle within ±10° with respect to a tire lateral direction. Each one of wall surface angles of the first wall and the second wall is larger than a wall surface angle of a wall surface provided with the cut.Type: GrantFiled: January 16, 2018Date of Patent: January 9, 2024Assignee: The Yokohama Rubber Co., LTD.Inventor: Takahisa Murata
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Patent number: 11865877Abstract: A tire information acquisition device includes: a sensor unit including a sensor configured to acquire tire information; a sensor holder formed in a cylindrical shape holding the sensor unit, and composed of a non-metallic material having flexibility and air permeability; and a band having a band circumferential length adjustable by a fastening portion provided at one end and configured to reversibly fasten an other end, and the band is fastened to a rim in a state where the band is inserted into the sensor holder.Type: GrantFiled: February 20, 2019Date of Patent: January 9, 2024Assignee: The Yokohama Rubber Co., LTD.Inventor: Daisuke Kanenari
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Patent number: 11865870Abstract: Center land portions of a tire each include a circumferential narrow groove extending in a tire circumferential direction, and a first lateral groove opening to one edge portion of each of the center land portions at one end and connecting to the circumferential narrow groove at the other end, and a second lateral groove opening to the other edge portion of the center land portion at one end and connecting to the circumferential narrow groove at the other end. Further, the circumferential narrow groove has a zigzag shape formed by repeatedly connecting a first long portion, a first short portion, a second long portion, and a second short portion. Furthermore, the first lateral groove connects to the first long portion of the circumferential narrow groove having the zigzag shape, and the second lateral groove connects to the second long portion of the circumferential narrow groove having the zigzag shape.Type: GrantFiled: September 21, 2022Date of Patent: January 9, 2024Assignee: The Yokohama Rubber Co., LTD.Inventor: Masashi Noritake
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Patent number: 11858297Abstract: With a pneumatic tire not mounted on a rim, in a meridian cross-section a first line is parallel with an innermost bottom side of a bead core in a radial direction and passes through an outermost projection of the bead core in a lateral direction, a second line is orthogonal with the first line at the outermost projection, a third line is orthogonal with the first line and passes through an intersection of a rim cushion rubber, a distance between the second and third lines is 2.0 to 4.0 mm, a shortest distance between an innermost projection of the bead core in the lateral direction and a cord of a carcass layer is 0.6 to 1.4 mm, and a shortest distance between an innermost end of the bottom side of the bead core in the lateral direction and the cord of the carcass layer is 1.2 to 2.2 mm.Type: GrantFiled: December 5, 2022Date of Patent: January 2, 2024Assignee: The Yokohama Rubber Co., LTD.Inventor: Koji Nishio
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Patent number: D1012005Type: GrantFiled: May 10, 2022Date of Patent: January 23, 2024Assignee: THE YOKOHAMA RUBBER CO., LTD.Inventor: Masashi Noritake
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Patent number: D1012827Type: GrantFiled: June 25, 2021Date of Patent: January 30, 2024Assignee: THE YOKOHAMA RUBBER CO., LTD.Inventors: Mizuki Kuninaka, Noboru Kuwahara
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Patent number: D1016731Type: GrantFiled: July 31, 2020Date of Patent: March 5, 2024Assignee: THE YOKOHAMA RUBBER CO., LTD.Inventors: Kotaro Iwabuchi, Hironori Wada