公开(公告)号：US10071597B2

公开(公告)日：2018-09-11

申请号：US14913600

申请日：2014-08-27

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Shintaro Tomita ,  Susumu Tanaka ,  Kazuo Asano

IPC: B60C9/02 ,  B60C3/04 ,  B60C9/18 ,  B60C11/00 ,  B60C13/00 ,  B60C15/00 ,  B60C15/06 ,  B60C13/02

CPC classification number: B60C3/04 ,  B60C9/02 ,  B60C9/0292 ,  B60C9/18 ,  B60C11/00 ,  B60C13/00 ,  B60C13/003 ,  B60C13/02 ,  B60C15/00 ,  B60C15/0036 ,  B60C15/06 ,  Y02T10/862

Abstract: [Object] A pneumatic tire 2 that allows achievement of reduction of rolling resistance without taking influence on a mass into consideration, is provided.[Solution] A profile OL of the tire 2 includes a ground-contact surface 46 and a pair of side surfaces 48. In the profile OL, a zone from a point PB to a point PW is formed by three arcs. The arcs are a first arc, a second arc that extends almost outward from the first arc in the radial direction, and a third arc that extends almost outward from the second arc further in the radial direction. A ratio of a radius R2 of curvature of the second arc to a radius R1of curvature of the first arc is greater than or equal to 1.45 and not greater than 3.26. A ratio of a radius R3 of curvature of the third arc to the radius R1 of curvature of the first arc is greater than or equal to 0.45 and not greater than 0.56. Each sidewall 8 of the tire 2 has a first recess 50a and a second recess 50b that are recessed inward from the side surface 48.

公开(公告)号：US10052916B2

公开(公告)日：2018-08-21

申请号：US14892902

申请日：2014-05-15

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Kazuo Asano ,  Shintaro Tomita ,  Susumu Tanaka

IPC: B60C3/00 ,  B60C3/04 ,  B60C5/00 ,  B60C11/00 ,  B60C13/00 ,  B60C9/20 ,  G01M17/02

Abstract: In a tire 2, a difference Fs (((Dd−De)/W)×100) in an amount of protrusion is greater than −0.4 and less than 0.5. A sum Fa (((Dd+De)/W)×100) of amounts of protrusions for a sidewall 6 satisfies mathematical expressions (3) and (4) in which an aspect ratio A is used, and a difference Gs (((Da−Dh)/W)×100) in an amount of protrusion for a tread 4 satisfies mathematical expressions (6) and (7). 0.02626×A−1.8615

公开(公告)号：US10155417B2

公开(公告)日：2018-12-18

申请号：US14363356

申请日：2013-01-18

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Kazuo Asano ,  Shintaro Tomita ,  Susumu Tanaka

IPC: B60C9/20 ,  B60C13/00 ,  B60C19/00 ,  B60C9/02 ,  B29D30/06 ,  B60C11/03 ,  G01M17/02 ,  G01N3/56

Abstract: A pneumatic tire excellent in resistance to uneven wear, and crack resistance of a groove is provided. A position, on an equator plane, of a tread surface 20 of a tire 2 is represented as a point Pc. A position, at a maximum width, of an axially outer side surface 6a of a sidewall 6 is represented as a point Pe. A position that is a mid-point, in the radial direction, between the point Pc and the point Pe, and that is on the axially outer side surface 6a, is represented as a point Pd. When an internal pressure is enhanced from an internal pressure that is 0.05 times a normal internal pressure P to the normal internal pressure P, a value Fs of difference in amount of protrusion between an amount of protrusion Dd (mm) at the point Pd and an amount of protrusion De (mm) at the point Pe is calculated according to mathematical expression (1) in which a nominal width is represented as W (mm). The value Fs of difference in amount of protrusion is greater than −0.4 and less than 0.5. Fs=((Dd−De)/W)×100  (1)

公开(公告)号：US09199515B2

公开(公告)日：2015-12-01

申请号：US13660009

申请日：2012-10-25

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Susumu Tanaka

IPC: B60C11/117 ,  B60C11/12 ,  B60C11/03 ,  B60C17/00 ,  B60C11/13

CPC classification number: B60C11/0304 ,  B60C11/032 ,  B60C11/1236 ,  B60C11/1369 ,  B60C17/00 ,  B60C2011/0341 ,  B60C2011/0348 ,  B60C2011/0353 ,  B60C2011/0376 ,  B60C2011/0381 ,  B60C2011/0388

Abstract: A run-flat tire comprises a tread portion having a left-right asymmetry tread pattern including an inboard tread edge and an outboard tread edge defining a tread width therebetween, a circumferentially extending inner crown main groove disposed in an inner crown area being 20% width of the tread width from a tire equator toward the in-board tread edge, a plurality of inner lateral grooves extending from the inner crown main groove to the in-board tread edge, a plurality of inner blocks separated by the inner crown main groove, inner lateral grooves and the inboard tread edge, wherein each inner block is not provided with any circumferential grooves, or is provided with at least one narrow circumferential groove having a groove width of less than 2.0 mm.

Abstract translation: 漏气保用轮胎包括具有左右不对称胎面花纹的胎面部分，其包括内侧胎面边缘和限定其间的胎面宽度的外侧胎面边缘，设置在内胎冠区域中的周向延伸的内胎冠主槽，其宽度为20％ 从轮胎赤道朝向车内胎面边缘的胎面宽度的多个内侧横向槽，从内胎冠主槽延伸到车内胎面边缘的多个内侧横向槽，由内冠主槽分隔开的多个内部块， 内部横向槽和内侧胎面边缘，其中每个内部块没有设置任何圆周槽，或者设置有至少一个槽宽度小于2.0mm的窄圆周槽。

公开(公告)号：US09150051B2

公开(公告)日：2015-10-06

申请号：US13731600

申请日：2012-12-31

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Susumu Tanaka

IPC: B60C3/00 ,  B60C13/00 ,  B60C3/04 ,  B60C13/02 ,  B60C11/01

CPC classification number: B60C3/04 ,  B60C11/01 ,  B60C13/02 ,  B60C2011/013 ,  B60C2013/006 ,  B60C2013/007 ,  Y02T10/862

Abstract: A pneumatic tire having a tread portion, a pair of sidewall portions, a pair of bead portions each with a bead core therein, wherein in a tire meridian section including a tire axis under a standard state that the tire is mounted on a standard rim and inflated to a standard pressure but loaded with no tire load, the tread portion has a tread width TW (mm) being from 80 to 90% of a nominal tire width YW, a profile from a shoulder region of the tread portion to the sidewall portion includes a shoulder profile for defining the shoulder portion, a sidewall profile for defining at least a part of the sidewall portion, and a buttress profile smoothly connecting between the shoulder profile and the sidewall profile.

Abstract translation: 一种充气轮胎，其具有胎面部，一对侧壁部，一对胎圈部，所述胎圈部分中具有胎圈芯，其中，在轮胎子午线部分中，轮胎子午线部分包括轮胎轴线，标准状态下轮胎安装在标准轮圈上， 膨胀到标准压力但不承载轮胎负荷，胎面部分胎面宽度TW（mm）为轮胎宽度标称轮胎宽度YW的80至90％，从胎面部分的肩部区域到侧壁部分的轮廓 包括用于限定肩部的肩部轮廓，用于限定侧壁部分的至少一部分的侧壁轮廓，以及平滑地连接在肩部轮廓和侧壁轮廓之间的支撑轮廓。

公开(公告)号：US09815336B2

公开(公告)日：2017-11-14

申请号：US14060041

申请日：2013-10-22

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Susumu Tanaka

IPC: B60C11/13 ,  B60C11/12 ,  B60C11/03

CPC classification number: B60C11/1315 ,  B60C11/0306 ,  B60C11/1236 ,  B60C11/1323 ,  B60C11/1369 ,  B60C2011/0341 ,  B60C2011/0344 ,  B60C2011/0358 ,  B60C2011/0365 ,  B60C2011/0369 ,  B60C2011/0372 ,  B60C2011/0395

Abstract: A pneumatic tire comprises a tread portion 2 provided with shoulder axial grooves 10 extending from a shoulder main groove 3 to a tread edge Te while inclining to a first-side in the tire circumferential direction. The shoulder axial groove 10 has a first-side groove edge, a second-side groove edge, a first-side groove-sidewall 14 extending radially inward from the first-side groove edge 12, and a second-side groove-sidewall 15 extending radially inward from the second-side groove edge 13. The shoulder axial groove 10 has a part where the inclination angle β of the first-side groove-sidewall 14 with respect to a normal line passing through the first-side groove edge 12 perpendicularly to the tread surface 2s is more than the inclination angle α of the second-side groove-sidewall 15 with respect to a normal line passing through the second-side groove edge 13 perpendicularly to the tread surface 2s.

公开(公告)号：US09457622B2

公开(公告)日：2016-10-04

申请号：US13865238

申请日：2013-04-18

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Susumu Tanaka

IPC: B60C9/18 ,  B60C9/20 ,  B60C11/03 ,  B60C11/117 ,  B60C11/12 ,  B60C11/13

CPC classification number: B60C11/0327 ,  B60C9/20 ,  B60C11/0306 ,  B60C11/1369 ,  B60C2011/0358 ,  B60C2011/0365 ,  B60C2011/0372 ,  B60C2011/0395 ,  B60C2011/1254

Abstract: A pneumatic tire comprises a tread portion provided with a radially outermost breaker ply and three main grooves extending in the tire circumferential direction. Crown axial grooves disposed between the main grooves are inclined oppositely to cords of the radially outermost breaker ply, at angles in a range of from 10 to 60 degrees with respect to the tire circumferential direction. The crown axial groove comprises a narrow portion and a resultant wide portion on the axially outside thereof. The crown axial groove is provided in its axially outer end portion with a tie bar provided with a sipe.

Abstract translation: 充气轮胎包括设置有径向最外侧的断路器帘布层的胎面部和沿轮胎周向延伸的三个主槽。 设置在主槽之间的凸缘轴向槽相对于径向最外侧的断路器帘布层的帘线倾斜相对于轮胎周向以10度至60度的范围倾斜。 冠状轴向槽在其轴向外侧包括狭窄部分和由此形成的宽部分。 冠状轴向槽在其轴向外端部分设置有设置有刀槽花纹的连杆。

公开(公告)号：US20140173900A1

公开(公告)日：2014-06-26

申请号：US14238072

申请日：2012-10-05

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Susumu Tanaka

IPC: B60C17/00

CPC classification number: B60C17/0009 ,  B60C3/06 ,  B60C19/001 ,  B60C2013/007 ,  B60C2017/0063 ,  B60C2017/0072 ,  Y10T29/49494 ,  Y10T152/10504

Abstract: A nm-fiat tire 1 comprises a carcass 6, a pair of side reinforcing rubber layers 9, and a pair of sidewall rubber components 10. At a tire maximum-width position, a first side reinforcing rubber layer 9A disposed in the side of a first bead portion has a thickness B1 greater than a thickness B2 of a second side reinforcing rubber layer disposed in the side of a second bead portion, and a first sidewall rubber component disposed in the side of the first bead portion has a thickness A1 smaller than a thickness A2 of a second sidewall rubber component disposed in the side of the second bead portion.

Abstract translation: 纳米级轮胎1包括胎体6，一对侧面增强橡胶层9和一对侧壁橡胶部件10.在轮胎最大宽度位置处，设置在侧面加强橡胶层9的侧面的第一侧面增强橡胶层9A 第一胎圈部的厚度B1大于设置在第二胎圈部侧的第二侧面增强橡胶层的厚度B2，并且设置在第一胎圈部侧的第一侧壁橡胶部件的厚度A1小于 设置在第二胎圈部分侧的第二侧壁橡胶部件的厚度A2。

公开(公告)号：US09604504B2

公开(公告)日：2017-03-28

申请号：US14049500

申请日：2013-10-09

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Susumu Tanaka

IPC: B60C11/03 ,  B60C11/00 ,  B60C11/13

CPC classification number: B60C11/0083 ,  B60C11/0304 ,  B60C11/0309 ,  B60C11/1376 ,  B60C2011/0353 ,  B60C2011/0355

Abstract: A pneumatic tire has an inboard tire tread edge and an outboard tire tread edge positioned towards the center of a vehicle body and away from the center of the vehicle body, respectively. The tire tread is divided by circumferentially continuously extending main grooves into a center land portion, a pair of middle land portions and a pair of shoulder land portions. In a meridian section of the tire, a center profile of a tread of the center land portion and a middle profile of a tread of each of the middle land portions protrude convexly, radially outwardly from a virtual tread profile defined as smoothly passing through the axial ends of the treads of the center land portion and the middle land portions. The peak of the center profile and the peak of the middle profile are off-centered toward the outboard tire tread edge.

公开(公告)号：US20140332131A1

公开(公告)日：2014-11-13

申请号：US14363356

申请日：2013-01-18

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Kazuo Asano ,  Shintaro Tomita ,  Susumu Tanaka

IPC: B60C9/20 ,  G01M17/02 ,  G01N3/56 ,  B29D30/06 ,  B60C11/03

CPC classification number: B60C9/20 ,  B29D30/0601 ,  B29D2030/0665 ,  B60C9/0292 ,  B60C11/03 ,  B60C13/003 ,  B60C19/00 ,  B60C2009/2012 ,  G01M17/022 ,  G01N3/56

Abstract: A pneumatic tire excellent in resistance to uneven wear, and crack resistance of a groove is provided. A position, on an equator plane, of a tread surface 20 of a tire 2 is represented as a point Pc. A position, at a maximum width, of an axially outer side surface 6a of a sidewall 6 is represented as a point Pe. A position that is a mid-point, in the radial direction, between the point Pc and the point Pe, and that is on the axially outer side surface 6a, is represented as a point Pd. When an internal pressure is enhanced from an Internal pressure that is 0.05 times a normal internal pressure P to the normal internal pressure P, a value Fs of difference in amount of protrusion between an amount of protrusion Dd (mm) at the point Pd and an amount of protrusion De (mm) at the point Pe is calculated according to mathematical expression (1) in which a nominal width is represented as W (mm). The value Fs of difference in amount of protrusion is greater than −0.4 and less than 0.5. Fs=((Dd−De)/W)×100  (1)

Abstract translation: 提供了耐凹凸不均匀性和耐龟裂性优异的充气轮胎。 在轮胎2的胎面表面20的赤道平面上的位置被表示为点Pc。 侧壁6的轴向外侧面6a的最大宽度的位置被表示为点Pe。 位于点Pc和点Pe之间的径向中点，位于轴向外侧表面6a上的位置被表示为点Pd。 当从正常内部压力P的正常内部压力P的内部压力P提高内部压力到正常内部压力P时，点Pd处的突出量Dd（mm）和 根据数学表达式（1）计算点Pe处的突出量De（mm），其中标称宽度表示为W（mm）。 突出量差异的值Fs大于-0.4且小于0.5。 Fs =（（Dd-De）/ W）×100（1）