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.

公开(公告)号：USD763780S1

公开(公告)日：2016-08-16

申请号：US29486131

申请日：2014-03-26

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Designer： Makoto Igarashi

公开(公告)号：US10894396B2

公开(公告)日：2021-01-19

申请号：US16133885

申请日：2018-09-18

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Hiroyuki Onimatsu ,  Kaoru Kubota ,  Kazuya Suzuki ,  Makoto Igarashi

IPC: B32B37/15 ,  B32B38/00 ,  B29D30/48 ,  B32B41/00 ,  B29D30/42 ,  B29D30/24

Abstract: A device for manufacturing a multiple layer rubber strip including a first rubber strip and a second rubber strip, the device includes a first rubber extruder for extruding the first rubber strip, a second rubber extruder for extruding the second rubber strip, a first conveyor for conveying the first rubber strip extruded from the first extruder to a downstream side in a convey direction, and a second conveyor for conveying the second rubber strip extruded from the second extruder to a downstream side in the convey direction. The second conveyor is located upwardly of the first conveyor and has a downstream conveyor end which positions above a conveying surface of the first conveyor such that the second rubber strip delivered from the downstream conveyor end meets and overlaps the first rubber strip on the first conveyor at a joining location to form the single multiple layer rubber strip.

公开(公告)号：US10800118B2

公开(公告)日：2020-10-13

申请号：US15679537

申请日：2017-08-17

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Wako Iwamura ,  Kiyotaka Nishio ,  Makoto Igarashi ,  Makoto Sugiya

IPC: B29D30/00 ,  B29D30/10 ,  B29D30/02 ,  B60C7/10

Abstract: A method of manufacturing a tire product comprising: a step of preparing a core-assembly 4 of a rigid core 2 and a rubber member 3 formed on the rigid core 2, wherein the rigid core 2 is attached to a spindle device 7, and the rubber member 3 is to be vulcanization-molded, and constitutes all or a portion of a green tire, a step of conveying the core-assembly 4 from the spindle device 7 into a mold 50, and a step of vulcanization-molding the rubber member 3 on the rigid core 2 in the mold 50. The conveying of the core-assembly includes obtaining the weight of the rubber member 3 included in the core-assembly 4.

公开(公告)号：US10183533B2

公开(公告)日：2019-01-22

申请号：US15030308

申请日：2014-10-08

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Masakazu Washizuka ,  Makoto Igarashi

IPC: B60C11/03 ,  B60C11/11 ,  B60C11/13

Abstract: The present disclosure relates to a heavy-duty tire compatible with wear resistance, uneven wear resistance, and wet performance. In the present disclosure, by providing, to a tread section, a pair of center primary grooves, a pair of shoulder primary grooves, a plurality of center lateral grooves, a plurality of middle lateral grooves, and a plurality of shoulder lateral grooves, the tread section is divided into a center block, a middle block, and a shoulder block.