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:
Oct. 23, 2001
Filed:
Oct. 16, 1997
Romano Guermandi, Milan, IT;
Pirelli Coordinamento Pneumatici S.p.A., Milan, IT;
Abstract
A tire (,) for motor-vehicle wheels comprises a tread band (,) and a belt structure (,), the tread band being molded with a raised pattern having a circumferential groove (,). In the absence of load and inflating pressure, the tire is characterized in that the belt structure in a cross-section of the tire has an axial profile comprising three distinct portions, first (,) and second (,) side portions and one central portion (,) interposed between the side portions. The side portions are concave at a radially internal position, in which the concavity is defined for each portion by a respective center and a respective radius of curvature. The central portion is concave at a radially external position where the concavity center of the central portion lies in the center line plane of the circumferential groove, in which the depth of the radially external concavity is canceled under the effect of the normal inflating pressure of the tire.