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:
Apr. 02, 1996
Filed:
Jan. 05, 1995
Applicant:
Inventors:
Tatsuhiko Kamegawa, Kodaira, JP;
Yukio Nakajima, Akigawa, JP;
Assignee:
Bridgestone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60C / ;
U.S. Cl.
CPC ...
1522 / ;
Abstract
A pneumatic tire having an outer surface of a tread portion divided into a tread pattern by grooves, in which each of the grooves has an intersect portion and an angle of an island portion surrounded by said intersect portion is different from that of another part at the same island portion. In such a tire, running performances on dry road are improved by making a distance in radial direction from an outer surface of the tread portion to a bottom of the groove at the intersect portion larger as the angle becomes smaller.