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. 31, 2013
Filed:
Dec. 19, 2007
Alessandro Castellini, Milan, IT;
Alessandro Castellini, Milan, IT;
Pirelli Tyre S.p.A., Milan, IT;
Abstract
A tire for vehicle wheels, in particular for heavy load vehicle wheels, has a tread band including an annular central portion astride an equatorial plane and two annular shoulder portions arranged on axially opposite sides with respect to the annular central portion. The annular central portion is separated from a respective annular shoulder portion by a respective circumferential groove. The annular central portion includes a plurality of blocks arranged along at least one circumferential row between two circumferential grooves and at least one transversal sipe arranged between two circumferentially consecutive blocks. The transversal sipe has a main surface oriented in a substantially radial direction and provided with at least one deformation defining, in the adjacent blocks, respective portions of mutual constraint. The deformation has an overall decreasing width from an axial end of the sipe to a central zone thereof and has a radial extension smaller than that of the aforementioned main surface.