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:
Nov. 17, 1987
Filed:
Jan. 30, 1984
Shinichiro Okuni, Akishima, JP;
Yoichi Kitazawa, Higashiyamato, JP;
Bridgestone Tire Company Limited, Tokyo, JP;
Abstract
A pneumatic semi-radial tire for motorcycle is disclosed, which comprises a tread, a pair of sidewalls, a carcass composed of at least one rubberized ply containing organic fiber cords inclined at an angle of 50.degree.-85.degree. with respect to the equatorial plane of the tire, and a belt disposed between said tread and said carcass at a width corresponding to a tread width and composed of at least two rubberized plies each containing cords with a modulus of elasticity of at least 600 kg/mm.sup.2 arranged at an inclination angle of 15.degree.-30.degree. with respect to the equatorial plane of the tire. In the tire, each end of at least one rubberized ply constituting the carcass is wrapped around a bead ring embedded in each radially inner end portion of the sidewalls toward a direction of the tread to form a turnup portion in which cords of the carcass are crossed with cords of the turnup portion in the sidewall; a stiffener inclusive of a tapered rubber filler extending from an upper part of the bead ring toward the tread direction and having a Shore A hardness of at least 60.degree. is disposed between the carcass and the turnup portion thereof or outside the turnup portion; and at least one of radial heights extending from the bead base to ends in the tread direction of the stiffener and turnup portion corresponds to at least 60% of the radial height of the sidewall.