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:
Sep. 28, 2004
Filed:
Jul. 02, 2001
Applicant:
Inventors:
Assignee:
Bridgestone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60C 1/111 ; B60C 1/112 ; B60C / ;
U.S. Cl.
CPC ...
B60C 1/111 ; B60C 1/112 ; B60C / ;
Abstract
Auxiliary grooves are formed in land portions so that the wet performance is improved by the increase in the edge factors of the auxiliary grooves and by the water absorbing actions of the auxiliary grooves . Since the auxiliary grooves are arranged on the shorter diagonal lines of the land portions , the land portions are divided into two triangles approximating equilateral triangles so that the reduction, as caused by providing the auxiliary grooves , of the rigidity of the land portions can be suppressed to the minimum. As a result, the deformation of the land portions is suppressed to maintain the dry performance.