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:
Jun. 18, 1991
Filed:
Jul. 03, 1989
Applicant:
Inventor:
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 / ;
Abstract
A radial tire for heavy duty vehicles, which has a tread provided with blocks defined by a main groove extending in the circumferential direction of the tire and lateral grooves extending from the main groove, wherein each lateral groove is provided with a deep portion one end of which is directly connected with the main groove, and the deep portion is provided with a platform protruding from the base thereof near the main groove, whereby uneven wear of the tread block is effectively diminished without decrease in tire performances such as wet grip, traction and breaking performances.