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公开(公告)号：US20210039441A1
公开(公告)日：2021-02-11
申请号：US16968539
申请日：2019-02-06
Applicant: The Yokohama Rubber Co., LTD.
Inventor： Kenji Horiuchi
Abstract: A tread pattern of a pneumatic tire includes circumferential main grooves, lug grooves and first and second sipes connecting the circumferential main grooves, a block land portion defined by the circumferential main grooves and the lug grooves and including the sipes. The lug grooves and the first and second sipes have a shape that projects toward one direction in the circumferential direction. A shallow depth groove raised bottom is provided in a turning portion where the lug groove includes a projecting apex. The projecting apex of a sipe turning portion including the projecting apex of the first sipe is within the range of the shallow depth groove raised bottom, and is inward in the lateral direction compared with the position of the projecting apex of a sipe turning portion including the projecting apex of the second sipe.
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公开(公告)号：US20160159159A1
公开(公告)日：2016-06-09
申请号：US14904677
申请日：2014-07-15
Applicant: THE YOKOHAMA RUBBER CO., LTD.
Inventor： Kenji Horiuchi
IPC: B60C11/03
CPC classification number: B60C11/033 , B60C11/0304 , B60C11/0306 , B60C11/0332 , B60C19/001
Abstract: Each pneumatic tire disposed on the rear wheel side has a total groove surface area ratio of 20% or more and 27% or less in ground-contacting width. Each pneumatic tire disposed on the front wheel side and the rear wheel side has a smaller groove surface area ratio on the vehicle outer side than on the vehicle inner side in the ground-contacting width. The difference in the groove surface area ratio is 7% or more and 15% or less. The total groove surface area ratio is greater on the front wheel side than on the rear wheel side, the difference in the total groove surface area ratio being 3% or more and 10% or less.
Abstract translation: 配置在后轮侧的各充气轮胎的总面积面积率为接地面宽度的20％以上且27％以下。 布置在前轮侧和后轮侧的每个充气轮胎在车辆外侧具有比在地面接触宽度中的车辆内侧更小的槽表面积比。 沟槽面积比的差为7％以上且15％以下。 前轮侧的总槽面积比在后轮侧大，总槽面积比为3％以上且10％以下。
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公开(公告)号：US09290064B2
公开(公告)日：2016-03-22
申请号：US13845616
申请日：2013-03-18
Applicant: The Yokohama Rubber Co., LTD.
Inventor： Kenji Horiuchi
CPC classification number: B60C17/00 , B60C17/0009 , B60C17/0027 , B60C2013/006 , B60C2013/007 , B60C2015/061 , B60C2017/0063 , B60C2017/0072
Abstract: In a pneumatic tire, a height from a turned-up edge of a carcass layer is not more than 10 mm, a distance from a tire outer surface to the carcass layer is not less than 50% of the total gauge, a height of the bead filler is from 50% to 80% of a tire cross-section height, a cross-sectional area ratio VB/VR of the bead filler to a side reinforcing layer is not less than 0.4 and not more than 0.6, a hardness HsB of the bead filler is not less than 65 and not more than 80, and the hardness HsR of the side reinforcing layer is not less than 75 and not more than 85, a size relationship between the hardness HsB and the hardness HsR is HsB≦HsR, a value TB of tan δ is not more than 0.06, and a value TR of tan δ is not more than 0.05.
Abstract translation: 在充气轮胎中，从胎体层的翻边的高度不大于10mm，从轮胎外表面到胎体层的距离不小于总规的50％，高度 胎圈填料的轮胎横截面高度为50％至80％，胎边填料与侧面增强层的横截面积比VB / VR不小于0.4且不大于0.6，硬度HsB为 珠填料不小于65且不大于80，侧面增强层的硬度HsR不小于75且不大于85，硬度HsB和硬度HsR之间的尺寸关系为HsB＆nlE; HsR， tanδ的值TB不大于0.06，tanδ的值TR不大于0.05。
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公开(公告)号：US20210138843A1
公开(公告)日：2021-05-13
申请号：US16636009
申请日：2018-07-26
Applicant: The Yokohama Rubber Co., LTD.
Inventor： Kenji Horiuchi
Abstract: In a pneumatic tire having a point-symmetric structure block pattern, narrow and wide outer blocks having different outer end positions in the lateral direction are alternately arranged in the circumferential direction. Among side blocks provided in a side region, large and small blocks are disposed respectively on the outer sides of the narrow and wide outer blocks in the lateral direction. The lateral and side grooves are continuous such that the groove width of the side groove connected to the wide portion of the lateral groove where the outer block converges toward the inner side in the radial direction, and the groove width of the side portion connected to the narrow portion of the lateral groove where the outer block widens toward the inner side in the radial direction, and the side block is tapered with an inner portion block width in the radial direction converges toward the wide portion.
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公开(公告)号：US10046606B2
公开(公告)日：2018-08-14
申请号：US14777223
申请日：2014-02-26
Applicant: The Yokohama Rubber Co., LTD.
Inventor： Kenji Horiuchi
Abstract: In a side reinforced type run-flat tire, a relationship between a distance (Do) from a center position of a circumferential primary groove that is positioned outermost in the tire width direction in a vehicle outer side region to a tire equatorial plane and a rim width (Wr) is such that 0.20≤Do/Wr≤0.30, and a relationship between a distance (Di) from a center position of a circumferential primary groove that is positioned outermost in the tire width direction in a vehicle inner side region to the tire equatorial plane and the rim width (Wr) is such that 0.25≤Di/Wr≤0.35.
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Patent Agency Ranking
公开(公告)号：US11613145B2
公开(公告)日：2023-03-28
申请号：US16636009
申请日：2018-07-26
Applicant: The Yokohama Rubber Co., LTD.
Inventor： Kenji Horiuchi
Abstract: In a pneumatic tire having a point-symmetric structure block pattern, narrow and wide outer blocks having different outer end positions in the lateral direction are alternately arranged in the circumferential direction. Among side blocks provided in a side region, large and small blocks are disposed respectively on the outer sides of the narrow and wide outer blocks in the lateral direction. The lateral and side grooves are continuous such that the groove width of the side groove connected to the wide portion of the lateral groove where the outer block converges toward the inner side in the radial direction, and the groove width of the side portion connected to the narrow portion of the lateral groove where the outer block widens toward the inner side in the radial direction, and the side block is tapered with an inner portion block width in the radial direction converges toward the wide portion.
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公开(公告)号：US12172470B2
公开(公告)日：2024-12-24
申请号：US16968539
申请日：2019-02-06
Applicant: The Yokohama Rubber Co., LTD.
Inventor： Kenji Horiuchi
Abstract: A tread pattern of a pneumatic tire includes circumferential main grooves, lug grooves and first and second sipes connecting the circumferential main grooves, a block land portion defined by the circumferential main grooves and the lug grooves and including the sipes. The lug grooves and the first and second sipes have a shape that projects toward one direction in the circumferential direction. A shallow depth groove raised bottom is provided in a turning portion where the lug groove includes a projecting apex. The projecting apex of a sipe turning portion including the projecting apex of the first sipe is within the range of the shallow depth groove raised bottom, and is inward in the lateral direction compared with the position of the projecting apex of a sipe turning portion including the projecting apex of the second sipe.
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公开(公告)号：US11701924B2
公开(公告)日：2023-07-18
申请号：US16636007
申请日：2018-07-26
Applicant: The Yokohama Rubber Co., LTD.
Inventor： Kenji Horiuchi
CPC classification number: B60C11/12 , B60C11/125 , B60C11/1307 , B60C2011/0346 , B60C2011/1213 , B60C2011/133
Abstract: A pneumatic tire is provided. A tread portion includes shallow grooves formed in a road contact surface of each of shoulder blocks, intermediate blocks, and center blocks, defined by a plurality of longitudinal grooves extending in a tire circumferential direction and a plurality of lateral grooves extending in a tire lateral direction, the shallow groove having a smaller groove depth than the longitudinal groove and the lateral groove. The shallow groove extends along the tire lateral direction, and at least one end thereof communicates with the longitudinal groove or the lateral groove. A contour line of the shallow groove is provided with at least one bend point. A sipe is provided in a flat bottom surface of the shallow groove extending along the shallow groove. Among the shallow grooves, center shallow grooves formed in the center block are each provided with a terminating end portion terminating in the center block.
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公开(公告)号：US11926177B2
公开(公告)日：2024-03-12
申请号：US17905307
申请日：2021-03-01
Applicant: The Yokohama Rubber Co., LTD.
Inventor： Kenji Horiuchi
CPC classification number: B60C11/1218 , B60C11/0304 , B60C11/033 , B60C11/1236 , B60C2011/1213
Abstract: 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
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公开(公告)号：US20210138842A1
公开(公告)日：2021-05-13
申请号：US16636007
申请日：2018-07-26
Applicant: The Yokohama Rubber Co., LTD.
Inventor： Kenji Horiuchi
Abstract: A pneumatic tire is provided. A tread portion includes shallow grooves formed in a road contact surface of each of shoulder blocks, intermediate blocks, and center blocks, defined by a plurality of longitudinal grooves extending in a tire circumferential direction and a plurality of lateral grooves extending in a tire lateral direction, the shallow groove having a smaller groove depth than the longitudinal groove and the lateral groove. The shallow groove extends along the tire lateral direction, and at least one end thereof communicates with the longitudinal groove or the lateral groove. A contour line of the shallow groove is provided with at least one bend point. A sipe is provided in a flat bottom surface of the shallow groove extending along the shallow groove. Among the shallow grooves, center shallow grooves formed in the center block are each provided with a terminating end portion terminating in the center block.
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