公开(公告)号：US11014410B2

公开(公告)日：2021-05-25

申请号：US16112355

申请日：2018-08-24

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Koji Matsuura ,  Tomoyuki Kujime

IPC: B60C11/12 ,  B60C11/03

Abstract: A tire comprises a tread portion provided with two circumferential grooves disposed one each side of the tire equator and extending continuously in the tire circumferential direction, and a crown land region between the two circumferential grooves. The crown land region is provided with first crown sipes extending from one of the circumferential grooves and terminating within the crown land region, and second crown sipes extending from the other circumferential groove and terminating within the crown land region.

公开(公告)号：US11850892B2

公开(公告)日：2023-12-26

申请号：US17207800

申请日：2021-03-22

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Koji Matsuura

IPC: B60C15/00 ,  B60C15/06

CPC classification number: B60C15/0628 ,  B60C15/0036 ,  B60C2015/0685

Abstract: A pneumatic tire comprises a carcass, a bead apex rubber, and a bead reinforcing cord layer. The bead apex rubber has a radially outer edge positioned at a radial height of 15% to 25% of the tire section height. The bead reinforcing cord layer comprises an axially inner first part disposed on the axially outside of a carcass ply main portion, and an axially outer second part disposed on the axially inside of a carcass ply turned-up portion. The radially outer edge of the axially outer second part is radially outwardly spaced apart from the radially outer edge of the carcass ply turned-up portion by at least 5 mm.