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:
Mar. 23, 2004
Filed:
Sep. 30, 2002
Dieter Ehrke, Bielefeld, DE;
Udo Hunkenschroeder, Bielefeld, DE;
Frank-Stefan Runte, Schloss/Stukenbrock, DE;
Martin Ziehl, Hövelhof, DE;
Parker-Hannifin GmbH, , DE;
Abstract
The invention relates to a device for forming an end area of a workpiece ( ), especially for cold press-forming an end area of a pipe, comprising two force transmitting elements ( ) which are guided in a common housing ( ). The device is characterised in that a first pressure chamber ( ) is located between the two force transmission elements ( ) and in that a second pressure chamber ( ) is allocated to the second force transmission element ( ). When the first force transmission element ( ) is in the bracing position, the second force transmission element ( ) can be displaced in relation to the first force transmission element ( ) in order to form the workpiece.