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:
Apr. 15, 2008
Filed:
Nov. 20, 2002
Applicants:
Giulio Betti, Lucca, IT;
Fabrizio Lorenzi, Lucca, IT;
Walter Di Nardo, Lucca, IT;
Inventors:
Assignee:
Fabio Perini S.p.A., Lucca, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 63/18 (2006.01); B29C 39/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
The rotating cylinder comprises: an elongated inner core () which is substantially rigid and an interchangeable sleeve () which is fitted onto the core; the sleeve is axially and angularly constrained to said core and is provided on its external surface with a raised pattern. The internal surface of the interchangeable sleeve and the external surface of the inner core are conical surfaces which are mutually complementary; axial and angular locking of the interchangeable sleeve and the inner core is achieved by the friction between the conical surfaces which are forced axially one onto the other.