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:
Dec. 13, 1977
Filed:
Mar. 13, 1974
Marcel J Bertrand, Grivegnee-Liege, BE;
Uniroyal AG, Aachen, DT;
Abstract
A pneumatic vehicle tire including a reinforcing belt characterized by improved resistance to ply separation is disclosed. The tire includes a carcass, a tread overlying the crown region of the carcass, and a tread reinforcing belt which is interposed between the tread and the crown region of the carcass in circumferentially surrounding relation to the latter, the belt including a plurality of plies of belt cords. Two axially spaced circumferentially extending bodies of rubber having a Shore A hardness of between about 70 and about 80 are positioned to cover the edges and the radially inward and outward marginal portions of the belt, thereby preventing edge ply separation. Two axially spaced circumferentially extending pads of rubber having a Shore A hardness of between about 55 and about 70 are positioned radially inward of the two bodies, respectively, and radially outward of the carcass, to insure satisfactory flexibility of the tire shoulders.