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:
Jun. 03, 2003
Filed:
Jul. 19, 2000
Naoya Ochi, Tokyo, JP;
Masaharu Kimura, Tokyo, JP;
Makoto Kurokawa, Tokyo, JP;
Hiroshi Kawabe, Tokyo, JP;
Hiroto Yoshida, Kanagawa, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
Sipes extending from one end of a block to the central area of the block and sipes extending from the other end of the block to the central area of the block (sipes and ) are inclined in directions opposite to each other. The sipes extending from one end of the block and the sipes extending from the other end of the block intersect a common line extending along the circumferential direction of the tire. Due to this structure, the number of portions of the sipes, which portions are located in the central area of the block, is made greater than that in the peripheral area of the block. The density of sipes is thus increased in the central area of a block where water tends to form when driving on ice, for improving braking and traction properties on ice.