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:
Oct. 11, 1977
Filed:
Feb. 24, 1976
Applicant:
Inventors:
Franz Josef Zilges, Monchengladbach, DT;
Klaus Siegert, Berlin, DT;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21C / ; B21C / ; B21C / ;
U.S. Cl.
CPC ...
7225 / ; 72255 ; 72273 ;
Abstract
An extrusion press for indirect extrusion has a sealing plate at one end of the bore of the billet container. This sealing plate extends a certain distance into the bore where it provides a seal against the wall of the bore. The plate also has a recess for accommodating a dummy block during extrusion, and a piston is provided behind the sealing plate to push the dummy block and butt end out of the recess at the end of extrusion.