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. 12, 2013
Filed:
Jun. 26, 2008
Steffen Keitel, Halle, DE;
Jan Neubert, Halle, DE;
Wolfgang Scheller, Tonisvorst, DE;
Markus Liedtke, Waltrop, DE;
Christian Caesar, Bottrop, DE;
Steffen Keitel, Halle, DE;
Jan Neubert, Halle, DE;
Wolfgang Scheller, Tonisvorst, DE;
Markus Liedtke, Waltrop, DE;
Christian Caesar, Bottrop, DE;
V & M Deutschland GmbH, Düsseldorf, DE;
Abstract
The invention relates to a method for connecting thick-walled metal workpieces by welding. In order to create the weld joint, the cross-sections are provided with a maximum of three weld regions according to wall thickness, the welding being carried out by a combined use of welding methods: the first weld region (root) is welded by means of laser beam welding or hybrid laser-arc welding, the second weld region is welded by means of hybrid laser-arc welding, and the third weld region required occasionally depending on the thickness of the sheet metal is welded by means of hybrid laser-arc welding or simply arc welding. The invention also relates to a seam preparation corresponding to the respective welding method used.