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:
Feb. 11, 2003
Filed:
Jun. 14, 2001
Wilhelm Arns, Paderborn, DE;
Arndt Birkert, Bretzfeld-Unterheimbach, DE;
Matthias Schroeder, Gruenendeich, DE;
DaimlerChrysler AG, Stuttgart, DE;
Abstract
A device for manufacturing a hollow body from two plates. The device includes an internal high pressure forming tool having an interior surface defining a mold chamber corresponding to a shape of the hollow body. The forming tool being arranged to receive two plates resting against each other. An expansion lance is insertable between the plates via an axial drive, and the expansion lance and the axial drive forming a pushing plunger. The expansion lance has a pinching section along a circumferential contour, and the plates to be pinched are arranged between the pinching section and the forming tool. The expansion lance includes a feed bore communicable with a high pressure fluid source. The expansion lance defines an axial stop to abut axial edges of the plates. The axial stop has a radial periphery which is smaller than that of the mold chamber.