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. 08, 1978
Filed:
Mar. 30, 1977
Applicant:
Inventors:
Douglas W Rowell, Woodbury, CT (US);
Werner Rethmann, Georgsmarienhuette, DE;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21C / ; B21C / ; B21C / ;
U.S. Cl.
CPC ...
72264 ; 72273 ;
Abstract
An improved construction of an extrusion press for producing an extruded tube is disclosed, the press including a billet chamber and a ram adapted to drive a billet through the billet chamber, a sizing means comprising an annular die, and a mandrel for sizing the wall thickness of the tube. The improved construction including a mandrel support means attached to and concentrically extending from the front face of the mandrel for maintaining continuous coaxial alignment of the mandrel with the die, prior to and during the extrusion operation.