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:
Mar. 13, 2007
Filed:
Jun. 30, 2004
Kazuya Suzuki, Kobe, JP;
Kazuya Suzuki, Kobe, JP;
Sumitomo Rubber Industries, Ltd., Kobe, JP;
Abstract
A tread () of a tire () has a two-layer structure. The tread () includes a base layer () provided on an inside in a radial direction and a cap layer () provided on an outside in the radial direction. The outer peripheral surface of the cap layer () constitutes a tread surface (). The tread surface () is provided with a groove (). A plurality of circular land portions () is formed by the adjacent grooves (). The base layer () is provided with a convex portion () extended in a circumferential direction. A plurality of convex portions () is arranged in an axial direction. A height (h) of the convex portion () is set to be 15% to 50% of a depth (d) of the groove (). A position (a dimension Δh) of a base bottom portion () of the base layer () based on an inner bottom portion () of the groove () is set at 1.6 mm or less from the inner bottom portion () of the groove ().