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:
Jun. 11, 2002
Filed:
Aug. 25, 2000
Peter Amborn, Neunkirchen, DE;
Other;
Abstract
The present invention relates to a method for manufacturing a hollow body made of metal whose cross sectional shape changes in longitudinal direction, a tubular slug being sealed at its end and being placed into a mold that corresponds to the desired shape and that is placed in a tool, said slug being then put under high pressure from the inside by means of a pressure means, whereas the two ends of the tube are pressed against each other in axial direction during the process of deformation, the slug being submitted during deformation to a higher temperature in the area of these great deformations than in the area of smaller deformations in order to produce areas with great deformations in its cross sectional shape.