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:
Jul. 26, 1994
Filed:
Oct. 10, 1991
Makoto Tsuruta, Kodaira, JP;
Hiroyuki Iida, Kodaira, JP;
Yasuhiko Kobayashi, Kodaira, JP;
Hiroyuki Koseki, Kodaira, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A pneumatic tire comprising a pair of beads, and a carcass ply consisting of a main body located axially inside the beads and outer ply portions extending along the main body of the carcass ply axially outside each of the beads. A number of circumferentially spaced recesses are provided in the outer surface of the tire between a radially outer end of each of the outer ply portions and a location corresponding to a maximum width of the tire, and the recesses has a depth equal to 1/10 time to 1/2 time as large as a thickness of those portions of the tire which are provided with the recesses. The inclined angle of a base portion of each of the beads is about 15.degree. relative to the rotary axis of the tire. In the tire, 0.4P.ltoreq.W.ltoreq.0.8P and B.ltoreq.0.06D in which P, B, W and D are a circumferential pitch of the recesses, a minimum distance between the adjacent recesses, a circumferential width of each of the recesses which is obtained by deducting the minimum distance B from the pitch P, and a diameter of a rim base, respectively.