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. 13, 2013
Filed:
Sep. 06, 2011
Stefano Cazzanti, Milan, IT;
Alfredo Balini, Milan, IT;
Stefano Cazzanti, Milan, IT;
Alfredo Balini, Milan, IT;
Pirelli Tyre S.p.A., Milano, IT;
Abstract
In a method for manufacturing tires for vehicle wheels, a green tire, once formed, is transferred into a vulcanization mold and pressed against the holding walls of a molding cavity. Concurrently with the pressing step, a fluid present between the green tire and the holding walls is evacuated through vent valves. The tire is brought into contact with the closing head of each valve so as to push it toward a closed position of the valve itself. The closing head has a distal portion facing the molding cavity and includes at least one grip element for the tire blend, so that the closure member is pulled toward the open position while the molded and cured tire is moved away from the inner surface of the molding cavity.