公开(公告)号：US11951772B2

公开(公告)日：2024-04-09

申请号：US16765454

申请日：2018-10-15

Applicant: The Yokohama Rubber Co., LTD.

Inventor： Masatoshi Shimizu

IPC: B60C11/01 ,  B60C11/00 ,  B60C11/03 ,  B60C11/13 ,  B60C9/22 ,  B60C17/00

CPC classification number: B60C11/01 ,  B60C11/0083 ,  B60C11/1376 ,  B60C9/2204 ,  B60C2011/0025 ,  B60C2011/0033 ,  B60C2011/0348 ,  B60C17/0009

Abstract: In a pneumatic tire, a tread portion includes a main groove extending in a circumferential direction, and land portions defined by the main groove. A center region is a region where a center land portion included in the land portions is closest to a tire equatorial plane. Shoulder regions are each a region between a position corresponding to 85% of a width of the belt layer in a lateral direction and an end portion of the belt layer in the lateral direction, and intermediate regions are each a region between the center region and a corresponding one of the shoulder regions. A relationship among a tire average thickness Gc in the center region, a tire average thickness Gsh in the shoulder regions, and a tire average thickness Gm in the intermediate regions is within a range of 1.05≤(Gc/Gsh)≤1.35 and satisfies Gc≥Gm>Gsh.

公开(公告)号：US11453250B2

公开(公告)日：2022-09-27

申请号：US14911232

申请日：2013-08-12

Applicant: The Yokohama Rubber Co., LTD.

Inventor： Masatoshi Shimizu ,  Masatoshi Kuwajima

IPC: B60C3/00 ,  B60C15/06 ,  B60C5/14 ,  B60C9/08 ,  B60C11/00 ,  B60C15/024 ,  B60C13/00 ,  B60C11/01 ,  B60C9/00 ,  B60C9/02 ,  B60C9/20 ,  B60C9/04

Abstract: In a pneumatic tire, a carcass layer is between bead portions, a bead core is in each bead portion, a reinforcement layer is on an outer side of the carcass layer, and a tread rubber layer is on the outer side of the reinforcement layer. A pair of first boundary lines passes through an intersection of an extension of a side arc forming a tread profile and an extension of a shoulder arc and orthogonal to a tire inner surface, a pair of second boundary lines passes through a rim check line and orthogonal to the tire inner surface, first to third regions are defined which have cross sectional areas of SA, SB, and SC, respectively, and the first to third regions respectively have lengths of a, b, and c along the tire inner surface such that 7.5≤SA/a≤11.5 and 2.0≤SB/b≤6.0 are satisfied.

公开(公告)号：USD914584S1

公开(公告)日：2021-03-30

申请号：US29687113

申请日：2019-04-10

Applicant: THE YOKOHAMA RUBBER CO., LTD.

Designer： Masatoshi Shimizu

公开(公告)号：US10828938B2

公开(公告)日：2020-11-10

申请号：US15312587

申请日：2015-05-19

Applicant: The Yokohama Rubber Co., LTD.

Inventor： Masatoshi Shimizu ,  Yuji Minami

IPC: B60C3/04 ,  B60C9/04 ,  B60C9/18 ,  B60C13/00 ,  B60C11/01 ,  B60C5/14 ,  B60C11/00 ,  B60C1/00 ,  B60C9/08 ,  B60C9/20

Abstract: A pneumatic tire has a ratio SW/OD between the total tire width SW and the tire external diameter OD satisfying SW/OD≤0.3. A first region A is defined between a pair of first boundary lines, second regions B are defined between a first boundary line and a second boundary line, and third regions C are defined on the bead toe side of the second boundary lines. Defining SA, SB, and SC as the cross-sectional area (mm2) of the first region A to the third region C, and defining the peripheral length (mm) of the first region A to third region C along the tire inner surface as a, b, and c, SA/a and SB/b satisfy 7.5≤SA/a≤11.5 and 2.0≤SB/b≤6.0, and the ratio TDW/SW between the developed tread width TDW and the total tire width SW satisfies 0.7≤TDW/SW≤0.95.

公开(公告)号：US11364745B2

公开(公告)日：2022-06-21

申请号：US16477884

申请日：2017-12-26

Applicant: The Yokohama Rubber Co., LTD.

Inventor： Masatoshi Shimizu

IPC: B60C11/12 ,  B60C11/00 ,  B60C11/04

Abstract: A pneumatic tire includes, in a tread portion, main grooves extending in a circumferential direction; ribs defined by the main grooves; at least one rib comprising sipes extending in a lateral direction; the sipes comprising a chamfered sipe with a chamfer portion provided on at least one edge, and a non-chamfered sipe with no chamfer portion provided on an edge; the chamfered sipe comprising one end portion terminating in the at least one rib and another end portion communicating with one of the main grooves located on either side of the at least one rib; a plurality of the chamfered sipes communicating with one of the main grooves located on either side of the at least one rib being alternately disposed in the circumferential direction; and the non-chamfered sipe being disposed close to the chamfered sipe on at least one side in the circumferential direction.

公开(公告)号：US20210291595A1

公开(公告)日：2021-09-23

申请号：US17262169

申请日：2019-06-04

Applicant: The Yokohama Rubber Co., LTD.

Inventor： Masatoshi Shimizu

IPC: B60C11/03 ,  B60C11/12

Abstract: In a tread portion of a pneumatic tire, an average lateral groove width Lc of a center region is obtained by dividing the groove area of lateral grooves in the center region by a circumferential length of the center region, and an average lateral groove width Lsh of a shoulder region is obtained by dividing the groove area of lateral grooves in the shoulder region by a circumferential length of the shoulder region. A relationship between a tire average thickness Gc of the center region and a tire average thickness Gsh in the shoulder region satisfies 1.05≤(Gc/Gsh)≤1.35, a relationship between the average lateral groove width Lc of the center region and the tire average thickness Gc in the center region satisfies 0.07≤(Lc/Gc)≤0.12, and a relationship between the average lateral groove width Lsh of the shoulder region and the tire average thickness Gsh in the shoulder region satisfies 0.17≤(Lsh/Gsh)≤0.26.

公开(公告)号：US20200276867A1

公开(公告)日：2020-09-03

申请号：US16765454

申请日：2018-10-15

Applicant: The Yokohama Rubber Co., LTD.

Inventor： Masatoshi Shimizu

IPC: B60C11/01 ,  B60C9/28 ,  B60C11/13

Abstract: In a pneumatic tire, a tread portion includes a main groove extending in a circumferential direction, and land portions defined by the main groove. A center region is a region where a center land portion included in the land portions is closest to a tire equatorial plane. Shoulder regions are each a region between a position corresponding to 85% of a width of the belt layer in a lateral direction and an end portion of the belt layer in the lateral direction, and intermediate regions are each a region between the center region and a corresponding one of the shoulder regions. A relationship among a tire average thickness Gc in the center region, a tire average thickness Gsh in the shoulder regions, and a tire average thickness Gm in the intermediate regions is within a range of 1.05≤(Gc/Gsh)≤1.35 and satisfies Gc≥Gm>Gsh.

公开(公告)号：US20150298510A1

公开(公告)日：2015-10-22

申请号：US14648681

申请日：2013-11-29

Applicant: THE YOKOHAMA RUBBER CO., LTD.

Inventor： Masatoshi Shimizu ,  Masatoshi Kuriyama ,  Shinya Harikae

IPC: B60C15/00 ,  B60C5/00 ,  B60C9/18 ,  B60C15/06 ,  B60C9/02

CPC classification number: B60C15/0036 ,  B60C5/00 ,  B60C9/02 ,  B60C9/18 ,  B60C9/185 ,  B60C15/0018 ,  B60C15/0027 ,  B60C15/0045 ,  B60C15/0603 ,  B60C15/0607 ,  B60C2009/1878 ,  B60C2009/2038 ,  B60C2015/061 ,  B60C2015/0621

Abstract: A pneumatic tire in which two carcass layers including carcass cords are laid between a pair of bead portions. Bead cores and bead fillers are disposed in the bead portions. At least two belt layers are disposed on the outer circumferential side of the carcass layers. Both ends of the inner carcass layer are folded back from the tire inner side to the tire outer side around the bead cores. The ends of the folded back portions of the inner carcass layer are disposed between the innermost belt layer and the outer carcass layer, while both ends of the outer carcass layer are disposed so as to pass between a main portion of the inner carcass layer and the bead fillers. Both ends of the outer carcass layer terminate at the bead portions without being folded back around the bead cores.

Abstract translation: 一种充气轮胎，其中包括胎体帘线的两个胎体层被放置在一对胎圈部之间。 珠粒和珠填料设置在胎圈部分中。 在胎体层的外周侧设置至少两个带束层。 内侧胎体层的两端从胎圈芯的轮胎内侧向轮胎外侧折回。 内胎体层的折回部分的端部设置在最内侧带层和外胎体层之间，而外胎体层的两端设置成通过内胎体层的主要部分和 珠填料。 外胎体层的两端终止于胎圈部，而不会绕胎圈芯折叠。

公开(公告)号：US10850565B2

公开(公告)日：2020-12-01

申请号：US15312595

申请日：2015-05-19

Applicant: The Yokohama Rubber Co., LTD.

Inventor： Yuji Minami ,  Masatoshi Shimizu

IPC: B60C3/04 ,  B60C9/04 ,  B60C9/20 ,  B60C11/00 ,  B60C9/22 ,  B60C5/14 ,  B60C9/08 ,  B60C9/18 ,  B60C11/03 ,  B60C9/00 ,  B60C11/12

Abstract: A pneumatic tire includes a tread portion, sidewall portions, bead portions, and has at least one carcass layer disposed between the pair of bead portions. The ratio SW/OD between the total tire width SW and the tire external diameter OD satisfies the relationship SW/OD≤0.3. A first region A is defined between a pair of first boundary lines (L1, L1), second regions B are defined between a first boundary line (L1) and a second boundary line (L2), and third regions C are defined on the bead toe side of the second boundary lines (L2). Defining SA, SB, and SC as the cross-sectional area (mm2) of the first region A to the third region C, and defining the peripheral lengths (mm) of the first region A to third region C along the tire inner surface as a, b, and c, respectively, the relationship 7.5≤SA/a≤11.5 is satisfied.

公开(公告)号：US20150306920A1

公开(公告)日：2015-10-29

申请号：US14648680

申请日：2013-11-29

Applicant: THE Yokohama Rubber Co., LTD.

Inventor： Masatoshi Kuriyama ,  Masatoshi Shimizu ,  Shinya Harikae

IPC: B60C15/00 ,  B60C5/00 ,  B60C15/06 ,  B60C9/08 ,  B60C9/20

CPC classification number: B60C15/0036 ,  B60C5/00 ,  B60C9/08 ,  B60C9/20 ,  B60C15/0018 ,  B60C15/0045 ,  B60C15/0603 ,  B60C15/0607 ,  B60C2009/0215 ,  B60C2015/0617 ,  B60C2015/0621 ,  B60C2015/0625

Abstract: A pneumatic tire has two carcass layers including carcass cords are laid between a pair of bead portions, bead cores and bead fillers are disposed in the bead portions, and at least two belt layers are disposed on the outer circumferential side of the carcass layers, the tire being characterized in that both ends of the inner carcass layer are folded back from the tire inner side to the tire outer side around the bead cores, and the ends of the folded back portions of the inner carcass layer are disposed between the innermost belt layer and the outer carcass layer, while both ends of the outer carcass layer are disposed so as to pass between a main portion of the inner carcass layer and the bead fillers, and both ends of the outer carcass layer terminate at the bead portions without being folded back around the bead cores.

Abstract translation: 充气轮胎具有两个胎体层，其中胎体帘布层布置在一对胎圈部之间，胎圈芯和胎圈填料设置在胎圈部分中，并且至少两个带束层设置在胎体层的外周侧上， 轮胎的特征在于，内胎体层的两端从胎圈芯的轮胎内侧向轮胎外侧折回，内胎体层的折回部的端部配置在最内侧带束层 外胎体层的两端配置成通过胎体内胎体层的主要部分和胎圈填料之间，并且外胎体层的两端终止于胎圈部而不折叠 绕着珠芯。