Invention Grant
- Patent Title: Pneumatic tire
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Application No.: US14225485Application Date: 2014-03-26
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Publication No.: US09731560B2Publication Date: 2017-08-15
- Inventor: Hirokazu Takano
- Applicant: Sumitomo Rubber Industries, Ltd.
- Applicant Address: JP Kobe-Shi, Hyogo
- Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
- Current Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
- Current Assignee Address: JP Kobe-Shi, Hyogo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2013-103339 20130515
- Main IPC: B60C11/13
- IPC: B60C11/13 ; B60C11/03

Abstract:
A pneumatic tire includes a tread portion provided with at least one circumferentially extending main groove, and at least one lateral groove extending from the main groove. The at least one lateral groove comprises a bottom, and at least one stepwise groove wall that includes at least one level part, wherein the number of level part is not more than three. In a cross-sectional view of the lateral groove, a depth Da from a ground contacting surface of the tread portion to a radially innermost level part is in a range of from 50% to 80% a maximum groove depth D4 of the lateral groove, and a width Wa from the radially innermost level part to a groove edge of the stepwise groove wall measured along in a groove width direction is in a range of from 50% to 150% the depth Da.
Public/Granted literature
- US20140338804A1 PNEUMATIC TIRE Public/Granted day:2014-11-20
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