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:
Jan. 04, 2005
Filed:
Apr. 09, 2002
Applicants:
Ulrich Brochheuser, Neunkirchen, DE;
Horst Statezni, Lohmar, DE;
Inventors:
Ulrich Brochheuser, Neunkirchen, DE;
Horst Statezni, Lohmar, DE;
Assignee:
GKN Automotive GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21C 126 ;
U.S. Cl.
CPC ...
Abstract
A method of elongating a tube () by way of a drawing ring (), wherein, when elongating the tube (), tensile forces are applied to an elongated tube portion () which has already passed through the effective drawing ring cross-section and that pressure forces are applied to a tube blank portion () which has not yet passed through the effective drawing ring cross-section, wherein the tensile forces are applied by a mandrel () which is positioned in the tube and which is connected to a front tube end in a form-fitting or force-locking way.