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. 28, 1979
Filed:
Aug. 08, 1977
Applicant:
Inventor:
Raymond F Boshold, Springfield, PA (US);
Assignee:
Wean United, Inc., Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21C / ; B21C / ;
U.S. Cl.
CPC ...
72 48 ; 72255 ; 72256 ; 72265 ; 72370 ;
Abstract
In the direct extrusion of tubing wherein the extruded tube or tubing is immediately submerged into water after extrusion and having a closed leading end, the trailing end thereof in the extrusion press is sealed off from the entrance of water by a crimping device consisting of a tool having a rounded front end which engages and forces through the operation of a piston cylinder assembly one wall inwardly of the trailing end against an opposed wall to form a collapsed double wall cross section.