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:
Apr. 10, 2001
Filed:
Nov. 20, 1997
Helmut Augustin, Hamburg, DE;
Thomas Hülsberg, Rosengarten, DE;
DaimlerChrysler AG, Stuttgart, DE;
Abstract
A process and apparatus for manufacturing slot-shaped openings on hollow sections is disclosed in which the openings are produced by a piercing cutting operation by means of a blade-type cutting tool by the displacement of material in a cutout-free manner. During the slotting operation, the hollow sections are supported from the inside around the openings to be formed. In order to produce slot-shaped openings in a simple manner while maintaining the shape of the hollow section on arbitrarily constructed hollow sections in a reliable process free of positional tolerances, the hollow section is inserted in a recess of an internal high pressure forming tool. The hollow section is slotted by the interaction of the cutting action of a cutting tool integrated in the internal high pressure forming tool and an internal high pressure generated inside the hollow section.