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. 13, 2004
Filed:
Jan. 09, 2002
Michael Krengel, Giessen, DE;
Haymo Gottwals, Muecke, DE;
Klaus Gisbert Schmidt, Giessen, DE;
Reinhold Broehl, Staufenberg, DE;
Wolfgang Schmidt, Reiskirchen, DE;
Newfrey LLC, Newark, DE (US);
Abstract
The present invention relates to a lift-and-strike welding process. In a first step, e.g. an aluminum surfaces ( ) of a component is cleaned by striking an arc and then the element ( ) to be connected is welded on by means of at least one second voltage. Besides a lift-and-strike welding apparatus, a further lift-and-strike welding process is also provided, wherein an electric cleaning current flows between a surface ( ) of a component and an element to be welded thereon, in that the component rests on the surface ( ) and then the element ( ) is lifted off the surface ( ) up to an approximately, in terms of time, constant distance for removing a coating from the surface ( ) by means of an arc, then the current changes its polarity, wherein afterwards at least one welding current is produced and then the element ( ) is welded to the surface ( ).