公开(公告)号：US09132702B2

公开(公告)日：2015-09-15

申请号：US14150794

申请日：2014-01-09

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Taro Okabe ,  Satoshi Tanaka ,  Ikuo Atake

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

CPC classification number: B60C11/0306 ,  B60C11/125 ,  B60C11/1259 ,  B60C11/1263 ,  B60C11/1369 ,  B60C2011/0346 ,  B60C2011/0369 ,  B60C2011/0379 ,  B60C2200/06 ,  Y02T10/862

Abstract: A heavy duty pneumatic tire includes a tread portion provided with a pair of shoulder main grooves disposed axially outermost side, and at a center main groove between the shoulder main grooves to form a pair of middle portions. Each middle portion is provided with a middle sub groove, axially outer middle lateral grooves, and inner middle lateral grooves. The respective number of outer and inner middle lateral grooves are of from 40 to 50 in each middle portion. Each of the outer and inner middle lateral grooves includes a shallow bottom part having a depth smaller than that of the shoulder and center main grooves. The shallow bottom part is provided with a groove bottom sipe that extends along a longitudinal direction of each lateral grooves and includes a first portion, and a second portion having a depth smaller than the first portion.

Abstract translation: 重型充气轮胎包括：胎面部，其设置有沿轴向最外侧设置的一对胎肩主槽，并且在胎肩主槽之间的中心主槽处形成一对中间部。 每个中间部设有中间副槽，轴向外侧中间侧槽和内侧中间侧槽。 每个中间部分的外侧和内侧中间横向槽的数量分别为40〜50。 外侧和内侧中间横向槽中的每一个包括具有比肩部和中心主槽的深度小的深度底部。 浅底部设置有沿着每个横向槽的纵向方向延伸的槽底刀槽花纹，并且包括第一部分和具有比第一部分小的深度的第二部分。

公开(公告)号：US09358839B2

公开(公告)日：2016-06-07

申请号：US13777604

申请日：2013-02-26

Applicant: Sumitomo Rubber Industries Ltd.

Inventor： Taro Okabe

IPC: B60C1/00 ,  B60C11/00 ,  B60C11/03

CPC classification number: B60C11/0306 ,  B60C1/0016 ,  B60C11/0058 ,  B60C2011/0025 ,  B60C2011/0033 ,  B60C2200/06

Abstract: A heavy duty pneumatic tire has a belt and a tread such that ratio of width of the belt to width of the tread is greater than or equal to 0.95 and is not greater than 1.0. The tread has shoulder land portions on outer sides in axial direction, each shoulder portion has a cap layer including a body portion and a pad, the pad has complex elastic modulus greater than complex elastic modulus of the body portion, the body portion has loss tangent less than loss tangent of the pad, and each shoulder portion has ground-contact surface which has outer and inner ground-contact surfaces separated by boundary between the body portion and pad such that ratio of average ground-contact pressure of the outer ground-contact surface relative to average ground-contact pressure of the inner ground contact surface is greater than or equal to 0.85 and is not greater than 0.95.

Abstract translation: 重型充气轮胎具有带和胎面，使得带的宽度与胎面宽度的比率大于或等于0.95且不大于1.0。 胎面在轴向的外侧具有肩部陆部，每个肩部具有包括主体部分和垫的帽层，该垫具有大于主体部分的复合弹性模量的复合弹性模量，主体部分具有损耗正切 并且每个肩部具有地面接触表面，该接地表面具有由主体部分和衬垫之间的边界分开的外部和内部接地表面，使得外部接地触头的平均接地接触压力的比值 内接地表面相对于平均接地接触压力的表面大于或等于0.85并且不大于0.95。

公开(公告)号：US08925599B2

公开(公告)日：2015-01-06

申请号：US13644798

申请日：2012-10-04

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Taro Okabe

IPC: B60C11/01 ,  B60C11/04 ,  B60C11/03 ,  B60C11/00

CPC classification number: B60C11/01 ,  B60C11/0058 ,  B60C11/0332 ,  B60C2011/0025 ,  B60C2011/013 ,  B60C2011/016 ,  B60C2011/0348 ,  B60C2200/06 ,  Y02T10/862

Abstract: A heavy duty tire comprises a tread portion provided with belt plies and circumferentially-extending main grooves, wherein a shoulder rib area between the axially outermost shoulder main groove and a tread edge is subdivided by a sub groove into an axially inner main rib zone and an axially outer sub rib zone. The main rib zone is provided with a high elastic modulus rubber layer extending along the axially outer edge of the main rib zone to form a part of the tread face and made of rubber having an elastic-modulus higher than that of rubber forming the tread face except for said part of the tread face. The axial width (W1a) of the high elastic modulus rubber layer is 0.3 to 0.6 times the axial width (W1) of the main rib zone.

Abstract translation: 重型轮胎包括设置有带束层和周向延伸的主槽的胎面部，其中，在轴向最外侧的胎肩主槽和胎面边缘之间的胎肩肋区域被子槽细分成轴向内部主肋区域， 轴向外侧肋区域。 主肋带设置有沿着主肋区域的轴向外边缘延伸的高弹性模量橡胶层，以形成胎面的一部分并且由橡胶制成，其弹性模量高于形成胎面的橡胶的弹性模量 除了所述踏面的所述部分之外。 高弹性模量橡胶层的轴向宽度（W1a）为主肋带的轴向宽度（W1）的0.3〜0.6倍。

公开(公告)号：US09616714B2

公开(公告)日：2017-04-11

申请号：US14243088

申请日：2014-04-02

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Taro Okabe

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

CPC classification number: B60C11/0309 ,  B60C11/0306 ,  B60C11/033 ,  B60C11/125 ,  B60C2011/0365 ,  B60C2200/06

Abstract: A heavy duty pneumatic tire includes a tread portion provided with at least three circumferential main grooves, and a plurality of lateral grooves extending between adjacent main grooves or between one main groove and a tread edge, to form at least one block row comprising a plurality of blocks. The block row comprises a plurality of pitch elements each of which consists of circumferentially adjacent one lateral groove and one block. The tread portion has a land ratio in a range of from 70% to 80%. The block row comprises a number of pitch elements in a range of from 40 to 50, and each lateral groove has a groove width in a range of from 5% to 15% in relation to a circumferential length of the block in each pitch element.

公开(公告)号：US09457621B2

公开(公告)日：2016-10-04

申请号：US14149391

申请日：2014-01-07

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Taro Okabe

IPC: B60C11/03 ,  B60C11/12 ,  B60C11/11 ,  B60C11/04

CPC classification number: B60C11/0306 ,  B60C11/033 ,  B60C11/047 ,  B60C11/125 ,  B60C2011/0346 ,  B60C2011/0348 ,  B60C2011/0353 ,  B60C2011/0358 ,  B60C2011/0365 ,  B60C2011/0367 ,  B60C2011/0372 ,  B60C2200/06

Abstract: A heavy duty pneumatic tire includes a tread portion provided with at least one circumferentially and continuously extending main groove, and a plurality of lateral grooves to form circumferentially repeated pitch elements each of which consists of one lateral groove and a block element divided between two adjacent lateral grooves. The tread portion has a land ratio in a range of from 70% to 80%, and the pitch elements in a range of from 40 to 50. Each lateral groove has a circumferential groove width in a range of from 5% to 15% in relation to a circumferential length of the pitch element, and an angle in a range of from 45 to 85 degrees with respect to a circumferential direction of the tire.

Abstract translation: 重型充气轮胎包括设置有至少一个周向且连续延伸的主槽的胎面部分，以及多个横向槽，以形成周向重复的节距元件，每个横向槽由一个横向槽和分隔在两个相邻横向 凹槽 胎面部具有70％至80％的平坦比，40°至50°的间距元件。每个横向槽的周向槽宽度在5％至15％的范围内 与相对于轮胎的圆周方向成45度到85度的范围的角度相关。

公开(公告)号：US09849733B2

公开(公告)日：2017-12-26

申请号：US14628536

申请日：2015-02-23

Applicant: SUMITOMO RUBBER INDUSTRIES LTD.

Inventor： Taro Okabe

IPC: B60C15/00 ,  B60C15/024 ,  B60C15/06

CPC classification number: B60C15/0607 ,  B60C15/024 ,  B60C15/0628 ,  B60C2015/0614 ,  B60C2015/065

Abstract: A heavy duty pneumatic tire includes a pair of beads, a carcass and a pair of bead fillers laminated outward with respect to the beads in the axial direction, respectively. Each bead includes a core and an apex, the carcass includes a carcass ply folded back around the core and having a main portion and a folding-back portion, each bead filler has an outer edge, an inner edge and a fitting portion to fit to a rim, the fitting portion includes a bottom surface to make contact with a seat surface of the rim and an outer-side contact surface to make contact with a flange of the rim, and the outer-side contact surface has inner-side, outer-side and middle portions such that when not mounted to the rim, the middle portion is recessed inward with respect to imaginary straight line L1 passing through outer edges of the inner-side and outer-side portions.

公开(公告)号：US09636952B2

公开(公告)日：2017-05-02

申请号：US14572857

申请日：2014-12-17

Applicant: Sumitomo Rubber Industries Ltd.

Inventor： Taro Okabe ,  Makoto Igarashi ,  Minoru Nishi

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

CPC classification number: B60C11/125 ,  B60C11/0309 ,  B60C11/1369 ,  B60C2011/0346 ,  B60C2011/0355

Abstract: A heavy duty pneumatic tire includes a tread portion provided with circumferentially extending zigzag shaped main grooves, a plurality of land portions separated by the main grooves, and a plurality of lateral grooves to form a plurality of block elements on each land portion. Each land portion comprises a number of pitches in a range of from 40 to 50, wherein each pitch consists of one block element and one lateral groove adjacent to the concerned block element. Each block element has a length in a range of from 85% to 95% of a length of the pitch. The main grooves include a crown main groove, a shoulder main groove, and a middle main groove. The middle main groove has a zigzag amplitude larger than those of the crown main groove and the shoulder main groove.