公开(公告)号：US20180326792A1

公开(公告)日：2018-11-15

申请号：US15955447

申请日：2018-04-17

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Hirokazu TAKANO

IPC: B60C11/03 ,  B60C11/11 ,  B60C11/12

CPC classification number: B60C11/0306 ,  B60C11/11 ,  B60C11/1204 ,  B60C2011/0346 ,  B60C2011/0358 ,  B60C2011/1213 ,  B60C2011/1254 ,  B60C2200/14

Abstract: A tire comprises a tread portion 2 comprising at least a first main groove 3 and a second main groove 4 extending continuously in a tire circumferential direction. The first main groove 3 comprises a first oblique portion 11 inclined with respect to the tire circumferential direction and a second oblique portion 12 connected with the first oblique portion and inclined in an opposite direction to the first oblique portion 11. The second main groove 4 comprises a third oblique portion 13 inclined in a same direction as the first oblique portion 11 with respect to the tire circumferential direction, a fourth oblique portion 14 inclined in an opposite direction to the third oblique portion 13, and a longitudinal groove portion 15 disposed between the third and fourth oblique portions 13 and 14 so that they are not directly connected and extending along the tire circumferential direction.

公开(公告)号：US20140014244A1

公开(公告)日：2014-01-16

申请号：US13932586

申请日：2013-07-01

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Hirokazu TAKANO

IPC: B60C11/03

CPC classification number: B60C11/1315 ,  B60C11/0306 ,  B60C11/1323 ,  B60C11/1392 ,  B60C2011/0346 ,  B60C2011/0381 ,  B60C2011/0388

Abstract: A pneumatic tire has a tread portion provided with a center land portion defined between two crown main grooves 3 extending continuously in the tire circumferential direction. The widthwise center line of the crown main groove is made up of successively-arranged circular arcs all oriented toward the same axial direction. The center land portion is provided in its both sides with sloping-surface portions each defined by a sloping surface extending from the radially outer surface of the center land portion to the axially inner groove-sidewall surface of one of the crown main grooves. Each of the sloping-surface portions includes, in its circumferential extent, the circumferential position of one of axially outermost points of the widthwise center line of the adjacent crown main groove.

Abstract translation: 充气轮胎具有胎面部，该胎面部设置有在轮胎周向上连续延伸的两个胎冠主槽3之间限定的中央陆部。 冠主槽的横向中心线由相继排列的圆弧构成，全部朝向相同的轴向方向。 中心陆部分在其两侧设置有倾斜表面部分，每个倾斜表面部分由从中心陆部的径向外表面延伸到其中一个冠主槽的轴向内凹槽侧壁表面的倾斜表面限定。 每个倾斜表面部分在其圆周方向上包括相邻冠状主槽的宽度方向中心线的轴向最外点之一的圆周位置。

公开(公告)号：US20130269846A1

公开(公告)日：2013-10-17

申请号：US13861444

申请日：2013-04-12

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Toshio KOYAMA ,  Keiji HIGUCHI ,  Hirokazu TAKANO

IPC: B60C11/03

CPC classification number: B60C11/03 ,  B60C11/0306 ,  B60C11/0318 ,  B60C11/0332 ,  B60C2011/0346 ,  B60C2011/0358 ,  B60C2011/0365 ,  B60C2011/0372 ,  B60C2011/0374 ,  B60C2011/0388

Abstract: A pneumatic tire comprises a tread portion provided with a circumferential shoulder main groove, shoulder lateral grooves extending from the shoulder main groove toward a tread edge, and middle lateral grooves extending from the shoulder main groove toward a tire equatorial plane, the shoulder main groove extending in a zigzag manner through an axially innermost and outermost points alternately, each middle lateral groove extending from each innermost point of the shoulder main groove with an angle of 50-75 degrees with respect to a tire axial direction, and each shoulder lateral groove extending from the shoulder main groove with the same inclination direction with the middle lateral groove at an angle of 10-25 degrees with respect to the tire axial direction, wherein the number of shoulder lateral grooves is larger than the number of middle lateral grooves.

Abstract translation: 一种充气轮胎，包括：胎面部，其具有周向胎肩主槽，从所述胎肩主槽朝向胎面边缘延伸的胎肩横向槽，以及从胎肩主槽朝向轮胎赤道面延伸的中间横向槽，所述肩部主槽延伸 以Z字形方式通过轴向最内侧和最外侧的交替位置，每个中间横向槽从肩部主槽的每个最内点以相对于轮胎轴向方向以50-75度的角度延伸，并且每个肩部侧向槽从 相对于轮胎轴向以10-25度的角度与中间横向槽相同倾斜方向的肩部主槽，其中肩部横向槽的数量大于中间横向槽的数量。

公开(公告)号：US20200039297A1

公开(公告)日：2020-02-06

申请号：US16504554

申请日：2019-07-08

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Hirokazu TAKANO

IPC: B60C11/01 ,  B60C11/04 ,  B60C11/11

Abstract: A pneumatic tyre includes a tread portion including a shoulder land portion having a tread edge. The shoulder land portion is provided with shoulder lateral grooves extending inwardly in a tyre axial direction from the tread edge so as to define shoulder block elements therebetween, and at least one protrusion protruding from an outer surface in the tyre axial direction of the respective shoulder land portion. The protrusion includes first portions provided on the respective shoulder block elements and extending in a tyre radial direction, and a second portion located inwardly in the tyre radial direction of one of the shoulder lateral grooves and extending in a tyre circumferential direction to connect inner portions of at least two first portions.

公开(公告)号：US20140338804A1

公开(公告)日：2014-11-20

申请号：US14225485

申请日：2014-03-26

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Hirokazu TAKANO

IPC: B60C11/13

CPC classification number: B60C11/13 ,  B60C11/0309 ,  B60C11/1307 ,  B60C11/1323 ,  B60C11/1392 ,  B60C2011/0358 ,  B60C2011/0365 ,  B60C2011/0367 ,  B60C2011/0369 ,  B60C2011/0372

Abstract: A pneumatic tire includes a tread portion provided with at least one circumferentially extending main groove, and at least one lateral groove extending from the main groove. The at least one lateral groove comprises a bottom, and at least one stepwise groove wall that includes at least one level part, wherein the number of level part is not more than three. In a cross-sectional view of the lateral groove, a depth Da from a ground contacting surface of the tread portion to a radially innermost level part is in a range of from 50% to 80% a maximum groove depth D4 of the lateral groove, and a width Wa from the radially innermost level part to a groove edge of the stepwise groove wall measured along in a groove width direction is in a range of from 50% to 150% the depth Da.

Abstract translation: 充气轮胎包括设置有至少一个周向延伸的主槽的胎面部分和从主槽延伸的至少一个横向槽。 所述至少一个横向凹槽包括底部和至少一个包括至少一个水平部分的逐步槽壁，其中所述水平部分的数量不大于三个。 在横向槽的剖视图中，从胎面部的地面接触表面到径向最内部的部分的深度Da在横向槽的最大槽深度D4的50％至80％的范围内， 并且从凹槽宽度方向测量的从径向最内侧的部分到阶梯式槽壁的槽边缘的宽度Wa在距离Da的50％至150％的范围内。