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. 24, 2015
Filed:
Nov. 16, 2006
Torsten Bröβke, Duisburg, DE;
Michael Brüggenbrock, Rosendahl, DE;
Thomas Flehmig, Ratingen, DE;
Mohamed Tohfa, Duisburg, DE;
Torsten Bröβke, Duisburg, DE;
Michael Brüggenbrock, Rosendahl, DE;
Thomas Flehmig, Ratingen, DE;
Mohamed Tohfa, Duisburg, DE;
ThyssenKrupp Steel AG, Duisburg, DE;
Abstract
A method for the production of a hollow section from a blank, wherein the blank is introduced between two coreless halves of a die which have a desired section shape and can be displaced relative to one another and the blank is formed into a slotted hollow section by a closing movement of the halves of the die, includes preventing edges of the blank from sliding ahead during the closing movement of the die. A device for the production of hollow sections, which device has two coreless halves of a die which are positioned displaceably relative to one another and optionally a base plate, the halves of the die having the desired section shape of the hollow section which is to be formed includes means which, when the coreless halves are closing, prevent edges of a blank from sliding ahead to produce a slotted hollow section.