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:
Feb. 03, 1987
Filed:
Aug. 13, 1984
Eiji Nakasaki, Kakogawa, JP;
Hisashi Shirashoji, Kobe, JP;
Katsuyuki Hoshikawa, Kobe, JP;
Takao Kamijo, Toyonaka, JP;
Kazushige Ikeda, Akashi, JP;
Yasuhiro Inoue, Himeji, JP;
Takeo Kato, Nishinomiya, JP;
Sumitomo Rubber Industries, Ltd., Kobe, JP;
Abstract
Radial tires for motorcycles comprising a tread portion, side wall portions, bead portions, a carcass, a breaker, and optionally a reinforcing cord layer arranged outside the carcass and extending from one bead portion to the other bead portion and bead apexes made of a hard rubber, said tread portion having a plurality of longitudinal grooves in the circumferential direction at an angle of at least 5.degree. with respect to the cords of the most outer ply of the breaker. The motorcycle radial tires of the invention have an improved transverse stiffness at the side wall portions and moreover do not cause cracks at the bottom of the grooves in the tread portion.