The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 03, 2007
Filed:
Sep. 15, 2004
Kazuya Suzuki, Kobe, JP;
Kazuya Suzuki, Kobe, JP;
Sumitomo Rubber Industries, Ltd., Kobe-shi, JP;
Abstract
A pneumatic tire includes a tread portion provided in a tread face thereof with tread elements each provided with at least one zigzag sipe, a cap tread rubber defining the tread face, and a base tread rubber disposed radially inside the cap tread rubber, wherein the zigzag sipe comprises zigzag segments which are alternating circumferentially-oriented segments and an amplitude center line of zigzag of the zigzag sipe is inclined at an angle (theta) of from 0 to 45 degrees with respect to the tire circumferential direction, and the zigzag sipe has a bottom including alternating deep parts and shallow parts in comparison with the level of the boundary between the cap tread rubber and base tread rubber.