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:
Aug. 17, 2021
Filed:
Mar. 02, 2020
Pirelli Tyre S.p.a., Milan, IT;
Silvio Montanari, Milan, IT;
Maurizio Marchini, Milan, IT;
Oliver Haupt, Milan, IT;
Mario Mariani, Milan, IT;
Davide Lupo Conti, Milan, IT;
PIRELLI TYRE S.p.A., Milan, IT;
Abstract
A toroidal forming drum and a process for building tyres. The toroidal forming drum () is expanded within a shaped carcass sleeve (), for supporting the carcass sleeve () against an abutment surface ('S') externally provided by the forming drum (). An elementary semi-finished product () is applied around the shaped carcass sleeve (), by pressing the elementary semi-finished product () towards the abutment surface ('S'). The abutment surface (“S”) has circumferential rows of solid portions () alternated with hollow portions (). The solid portions (), arranged along axially opposite circumferential edges of the abutment surface (“S”), have a transverse size comprised between 10% and 60% of a transverse size presented by the solid portions () arranged in proximity to an axial centreline plane of the abutment surface (“S”).