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:
Jul. 20, 2004
Filed:
Feb. 05, 2002
Abstract
The invention relates to a method for shaping an initial profile ( ) or a similar workpiece, which comprises a profile space, into a final profile by using an internal high pressure that is generated in the sealed profile space by a flowable active medium. In order to shape the initial profile ( ) comprising at least one corner area ( ), preferably at least two corner area ( ), wall sections ( ) which connect in the corner area ( ) are preshaped such that their cross-sections are curved counter to the direction of pressure, and are subsequently straightened by the internal high pressure of the flowable active medium while displacing the corner area ( ) in a direction of pressure. To this end, a profile comprising a profile space that is delimited by profile walls ( ) is used in which two profile walls ( ) define a corner area ( ) of the profile cross-section, whereby at least one of the profile walls ( ) connecting in the corner area ( ) is provided with an area ( ) having a curved cross-section. A polygonal cross-section whose profile walls ( ) between the corner areas ( ) each comprise the inwardly curved area ( ) or with which selected profile walls ( ) which connect two corner areas ( ) preferably offer a curved area ( ).