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:
Sep. 01, 2015
Filed:
Oct. 16, 2013
Applicant:
Pirelli Tyre S.p.a., Milan, IT;
Inventors:
Assignee:
Pirelli Tyre S.p.A., Milan, IT;
Primary Examiner:
Int. Cl.
CPC ...
B29C 47/22 (2006.01); B29C 47/08 (2006.01); B29C 47/12 (2006.01); B29C 47/28 (2006.01); B29C 47/92 (2006.01); B29C 47/00 (2006.01); B29K 105/10 (2006.01); B29L 30/00 (2006.01);
U.S. Cl.
CPC ...
B29C 47/22 (2013.01); B29C 47/0811 (2013.01); B29C 47/0866 (2013.01); B29C 47/124 (2013.01); B29C 47/28 (2013.01); B29C 47/92 (2013.01); B29C 47/0019 (2013.01); B29C 47/0023 (2013.01); B29C 2947/926 (2013.01); B29C 2947/92019 (2013.01); B29C 2947/9258 (2013.01); B29C 2947/92209 (2013.01); B29C 2947/92409 (2013.01); B29C 2947/92466 (2013.01); B29C 2947/92514 (2013.01); B29C 2947/92571 (2013.01); B29C 2947/92704 (2013.01); B29C 2947/92904 (2013.01); B29C 2947/92933 (2013.01); B29C 2947/92952 (2013.01); B29K 2105/10 (2013.01); B29L 2030/003 (2013.01);
Abstract
An apparatus for extruding a polymeric material, having an extrusion head which includes a male die, a female die coaxially arranged with respect to the male die, a conveying channel, and at least one portion of which is defined between the male die and the female die. The apparatus further includes a device for adjusting a cross-sectional area of the at least one portion of the conveying channel by reciprocally displacing the female die with respect to the male die in response to an extrusion speed variation of the polymeric material.