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:
May. 12, 1981
Filed:
Jul. 13, 1979
Applicant:
Inventors:
Assignee:
Bridgestone Tire Company Limited, Kyobashi, JP;
Primary Examiner:
Int. Cl.
CPC ...
B29H / ; B29H / ;
U.S. Cl.
CPC ...
1561 / ; 1523 / ; 1523 / ; 156132 ; 156133 ;
Abstract
A light weight pneumatic tire having a thin side wall rubber is disclosed. The thin side wall rubber has previously been squeezed on that region of the outer surface of an upper ply which corresponds to the side wall portion of the tire prior to the tire shaping step, and has a Shore A hardness after vulcanization of 40.degree. to 55.degree., an excellent flex-cracking and weather resistant property. The upper ply is superimposed about at least a portion extending from a hump portion to a bead portion is composed of cords coated with a high resilient rubber. A tread rubber layer is extended across the thin side wall rubber layers and pressed and made integral therewith by stitching.