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:
Sep. 03, 2002
Filed:
Mar. 12, 2001
Applicant:
Inventors:
Zenichiro Shida, Hiratsuka, JP;
Masataka Koishi, Hiratsuka, JP;
Assignee:
The Yokohama Rubber Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60C 1/506 ; B60C 1/500 ;
U.S. Cl.
CPC ...
B60C 1/506 ; B60C 1/500 ;
Abstract
A pneumatic tire comprises a carcass layer provided between a pair of left and right bead sections, each of both end parts of the carcass layer in a tire width direction being turned up around a bead core from the inside of the tire to its outside, and a bead apex arranged in an outer peripheral side of the bead core, wherein at least a 30% area of a cross-sectional area of the bead apex positioned in a range of 20 to 35% of a tire section height SH is made of low tan &dgr; rubber which is set in a range of 25 to 75% of tan &dgr; of base bead apex rubber for a bead apex main body.