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. 29, 1998
Filed:
May. 06, 1996
Yuji Yamaguchi, Kodaira, JP;
Chishiro Tanabe, Kodaira, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
Pneumatic tires according to this invention have a tread provided with blocks separated by circumferential grooves extending around the tread and lateral grooves crossing the circumferential grooves, the blocks being respectively provided with two lateral sipes, characterized in that the lateral end portions having small rigidity in block portions which are substantially separated by lateral sipes are reinforced by, for example, a platform. The invention has the effects of restraining block chipping in heavy duty tires and degrading of steering stability in passenger tires, and enhancing the performance on ice without degrading wet performance, by means of increasing sipe density and restraining lowering of the block rigidity.