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. 04, 2012
Filed:
Oct. 31, 2003
Applicants:
Gaetano Lo Presti, Milan, IT;
Rodolfo Noto, Milan, IT;
Ignazio DE Gese, Milan, IT;
Giovanni Pozzati, Milan, IT;
Massimo Loprevite, Milan, IT;
Inventors:
Gaetano Lo Presti, Milan, IT;
Rodolfo Noto, Milan, IT;
Ignazio De Gese, Milan, IT;
Giovanni Pozzati, Milan, IT;
Massimo Loprevite, Milan, IT;
Assignee:
Pirelli Pneumatici S.p.A., Milan, IT;
Primary Examiner:
Int. Cl.
CPC ...
B29D 29/00 (2006.01); B29C 35/00 (2006.01); B29D 30/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An expandable bladder has at least one first layer of butyl material and one second layer of silicone material, radially external to the first layer. The first and second layers have an undulated interface profile defining mechanical-engagement elements between the first and second elastomer materials. A process for manufacturing bladder as well as a tire molding and vulcanising apparatus incorporating the bladder.