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. 24, 1981
Filed:
Apr. 05, 1979
Applicant:
Inventors:
Assignees:
Bridgestone Tire Company Limited, Tokyo, JP;
Ube Industries Limited, Ube, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60C / ; B60C / ; C08L / ;
U.S. Cl.
CPC ...
1522 / ; 1523 / ; 1523 / ; 152374 ; 152D / ; 260-5 ; 260 4232 ; 260 4247 ; 260762 ; 525236 ;
Abstract
A pneumatic tire having an improved chipping resistant property is disclosed. In the tire, the tread portion is formed with a vulcanizate of a rubber composition comprising 3-40 parts by weight of short fibers of syndiotactic-1,2-polybutadiene, 30-100 parts by weight of carbon black and 0.2-5 parts by weight of a p-phenylenediamine type antioxidant, on a basis of 100 parts by weight of a rubber selected from natural rubber, synthetic rubber and a blend thereof in an optional blending ratio.