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:
Mar. 13, 1984
Filed:
Sep. 24, 1982
Yutaka Yamaguchi, Tokorozawa, JP;
Nobuyuki Koizumi, Higashimurayama, JP;
Tamio Araki, Fuchu, JP;
Koichi Kojima, Higashimurayama, JP;
Nobumasa Ikeda, Kodaira, JP;
Bridgestone Tire Co., Ltd., Tokyo, JP;
Abstract
A pneumatic radial tire is disclosed, which comprises as a reinforcement a belt consisting of a first belt body composed of a single ply containing metal twisted cords arranged at an inclination angle of 5.degree.-25.degree. with respect to the equatorial plane of the tire and embedded in a coating rubber, both end portions in widthwise direction of which being folded on the remaining central base portion thereof, and a second belt body composed of at least one rubberized ply containing inextensible cords crossed with the cords in the base portion of the first belt body. In the first belt body, the coating rubber has a dynamic modulus of 160-400 kg/cm.sup.2 and a gauge of rubber interposed between the cords in the base portion and the cords in the folded portion is within a range of 1.3-4.5 times an average diameter of the cords and is not less than 2 times a gauge of the coating rubber located outside the cords in the base portion opposite to the folded portion.