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. 06, 2001
Filed:
Nov. 06, 1998
Nobuyuki Okamura, Tokyo, JP;
Masahiro Hojo, Tokyo, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A pneumatic tire having a tread layer. A rubber composition of the tread layer includes a specific diene-based rubber component, and either a specific zinc dithiophosphate vulcanization accelerator, or a specific zinc dithiophosphate vulcanization accelerator and a benzothiazole vulcanization accelerator. The zinc dithiophosphate vulcanization accelerator is contained in an amount of 0.2 to 5.0 parts by weight per 100 parts by weight of the rubber component. A molar amount of the benzothiazole vulcanization accelerator is one-half or more of a molar amount of the zinc dithiophosphate vulcanization accelerator. Further, the rubber composition contains a white filler in an amount of 15 parts by weight or more per 100 parts by weight of the rubber component. Produceability of the pneumatic tire is excellent, and a low heat build-up performance thereof is improved without any adverse effects on gripping performance.