公开(公告)号：US11654721B2

公开(公告)日：2023-05-23

申请号：US16880472

申请日：2020-05-21

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Saki Arakawa ,  Hiroshi Yamaoka ,  Kotaro Tahara ,  Takafumi Noguchi

IPC: B60C11/03

CPC classification number: B60C11/0302 ,  B60C11/0304 ,  B60C2011/0372 ,  B60C2011/0374

Abstract: A tire comprises a tread portion having outboard and inboard tread edges and provided with three main grooves to axially divide the tread portion into four land regions including a widest outboard middle land region, wherein first inclined grooves (16) extend across the entire width of the outboard middle land region; second inclined grooves (17) extend from a crown main groove and are terminated within the outboard middle land region; fourth inclined grooves (19) are connected to the second inclined grooves (17) and to the first inclined grooves on an outboard shoulder main groove side; and an angle of the first inclined groove (16) and an angle of the second inclined groove (17) with respect to the tire circumferential direction are gradually increases from the crown main groove toward the outboard tread edge.

公开(公告)号：US11498366B2

公开(公告)日：2022-11-15

申请号：US16851923

申请日：2020-04-17

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Mari Mishima ,  Hiroshi Yamaoka

IPC: B60C11/03 ,  B60C11/12 ,  B60C11/01

Abstract: In a tire having composite grooves provided on a shoulder land portion, dry performance and wet performance are improved. The tire includes a tread portion 2. The tread portion 2 includes a first shoulder land portion 13. The first shoulder land portion 13 has shoulder lateral grooves 15 and shoulder composite grooves 20. The shoulder lateral grooves 15 and the shoulder composite grooves 20 are each curved so as to be convex in a tire circumferential direction. Each shoulder composite groove 20 includes, in a cross section thereof, a sipe element 21 having a width not greater than 1.5 mm and extending from a tread surface of the first shoulder land portion 13 in a tire radial direction, and a groove element 22 connected to an inner side in the tire radial direction of the sipe element 21 and having a width greater than 1.5 mm.

公开(公告)号：US11433711B2

公开(公告)日：2022-09-06

申请号：US16879981

申请日：2020-05-21

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Hiroshi Yamaoka ,  Yoshiaki Kanematsu

IPC: B60C11/12 ,  B60C11/03

Abstract: In a tire having a composite groove provided on a shoulder land portion, the durability of the shoulder land portion is improved. The tire includes a tread portion. The tread portion includes a first shoulder land portion including a first tread edge. The first shoulder land portion has a shoulder composite groove, and a recess formed on a buttress surface. The recess includes an opening edge on the buttress surface, a bottom surface along the buttress surface, and an inner wall surface connecting the opening edge to the bottom surface. The shoulder composite groove includes, in a transverse cross section thereof, a sipe element having a width not greater than 1.5 mm and extending in a tire radial direction, and a groove element connected to an inner side in the tire radial direction of the sipe element and having a width greater than 1.5 mm. The groove element is open at the bottom surface of the recess.

公开(公告)号：US10821781B2

公开(公告)日：2020-11-03

申请号：US15631055

申请日：2017-06-23

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Toshiki Horiguchi ,  Hiroshi Yamaoka ,  Yoshiaki Kanematsu

IPC: B60C11/12 ,  B60C11/03 ,  B60C11/00

Abstract: A tire includes a tread part having main grooves and lands demarcated by the main grooves. A crown land between a pair of crown main grooves includes first crown lug grooves extending from one crown groove to tire axial direction inner side and terminated within the crown land, second crown lug grooves extending from the other crown groove to the tire axial inner side and terminated within the crown land, and first crown sipes formed at tire circumferential direction positions and connecting the crown grooves, each first crown sipe includes a first side crown sipe piece extending from one crown groove to the tire axial inner side, a second side crown sipe piece not positioned on an extension line of the first side piece and extending from the other crown groove to the tire axial inner side, and a connecting crown sipe piece connecting the first and second sipe pieces.

公开(公告)号：USD896165S1

公开(公告)日：2020-09-15

申请号：US29692835

申请日：2019-05-29

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Designer： Hiroshi Yamaoka

公开(公告)号：USD856916S1

公开(公告)日：2019-08-20

申请号：US29653313

申请日：2018-06-14

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Designer： Hiroshi Yamaoka

公开(公告)号：US12134285B2

公开(公告)日：2024-11-05

申请号：US17849920

申请日：2022-06-27

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Takeru Iwashita ,  Ryotaro Kitahara ,  Hiroshi Yamaoka

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

Abstract: A tire comprises a tread portion comprising a circumferentially arranged blocks divided by lateral grooves. Each block has a block side wall and a block tread. Each lateral groove comprises an axially outer first portion, an axially inner second portion, and a connect portion at which the first portion and the second portion are connected with each other so that each block is provided with a convex corner portion which is convex toward the outside of the block at the connect portion. In the convex corner portion, the block side wall comprises a first side wall extending along the first portion, a second side wall extending along the second portion, and a substantially triangular third side wall intersecting the first side wall, the second side wall and the block tread. The third side wall terminates radially outside the groove bottom of the lateral groove.

公开(公告)号：US12017482B2

公开(公告)日：2024-06-25

申请号：US17691998

申请日：2022-03-10

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Takeru Iwashita ,  Hiroshi Yamaoka

IPC: B60C11/12 ,  B60C11/03

CPC classification number: B60C11/1204 ,  B60C11/1236 ,  B60C2011/0353

Abstract: A tire includes a tread portion provided with a first land region demarcated between a shoulder circumferential groove and a tread edge. The first land region is provided with first sipes extending in a tire circumferential direction, axial sipes, and first axial grooves extending from the tread edge. The first sipes are not connected with the first axial grooves. Each of the axial sipes has an axially inner end connected with the shoulder circumferential groove. Each of the axial sipes has an axially outer end connected with one of the first sipes.

公开(公告)号：US11878555B2

公开(公告)日：2024-01-23

申请号：US17691956

申请日：2022-03-10

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Ryotaro Kitahara ,  Hiroshi Yamaoka

IPC: B60C11/12 ,  B60C11/03

CPC classification number: B60C11/1204 ,  B60C11/1236 ,  B60C2011/039 ,  B60C2011/0353

Abstract: A tire includes a tread portion including a first land portion, the first land portion being provided with a plurality of first sipes. The plurality of first sipes extends in an arc shape manner. The plurality of first sipes is arranged on the first land portion without communicating with lateral grooves extending in a tire axial direction. In a tread plan view, a virtual sipe reference line of each of the plurality of first sipes has an angle equal to or less than 10 degrees with respect to a tire circumferential direction, wherein the virtual sipe reference line is a straight line that connects both ends of each of the plurality of first sipes.

公开(公告)号：US10414211B2

公开(公告)日：2019-09-17

申请号：US15130579

申请日：2016-04-15

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Hiroshi Yamaoka

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

Abstract: A pneumatic tire includes a tread portion being provided with at least one circumferentially and continuously extending main groove and at least one land portion adjacent to the main groove. The land portion includes a corner portion formed between a ground contact surface and a sidewall of the land portion on the side of the main groove. The land portion is provided with a lug groove extending from the main groove and terminating within the land portion. The corner portion includes a chamfered portion and a non-chamfered portion. The chamfered portion includes a first end in communication with the lug groove.