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. 11, 2008
Filed:
Dec. 26, 2002
Shizuo Iwasaki, Fuchu, JP;
Shizuo Iwasaki, Fuchu, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A wheel tread partof a tread is constituted of a longitudinal main grooveformed in a circumferential direction via a center of a width direction, a plurality of longitudinal subgroovesformed on both side parts of the longitudinal main groovein the circumferential direction, and a plurality of traverse groovesformed in a width direction to intersect the longitudinal main and subgrooves, and divided into a plurality of blocks. Each of the plurality of blocksis provided with a one-end-open sipe, and formed so that rigidity in the width direction can be higher in an end a of a center side region compared with an end b of a shoulder side region. Since the rigidity of the end a of the center side region is higher, a reaction force is generated in accordance with a steering angle from the start of changing the same.