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. 30, 1991
Filed:
Jul. 26, 1989
Applicant:
Inventors:
Kazuki Numata, Nishinomiya, JP;
Kiyoshi Ochiai, Kobe, JP;
Assignee:
Sumitomo Rubber Industries, Ltd., Hyogo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60C / ;
U.S. Cl.
CPC ...
1522 / ; 152454 ;
Abstract
A radial tire provided with a circumferentially extending narrow groove in a boundary region between a tread portion and a buttress portion, and the narrow groove is inclined axially inward at the bottom by an angle of 0 to 5 degrees to the normal direction to the tread face, whereby the occurrence of vehicle wandering is effectively prevented without producing uneven wear in the tread shoulder regions.