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. 09, 2002
Filed:
Sep. 06, 2000
Fritz Liebrecht, Dresden, DE;
Georg Donhauser, Amberg, DE;
Reinhard Mauermann, Dresden, DE;
Hartmut Carstensen, Berlin, DE;
Other;
Abstract
The invention relates to a method and device for thermally supporting mechanical joints by means of punched rivets with a semi-hollow rivet or a solid rivet or by pounding. The method is characterized in that a local and time limited heating of the joint parts ( ) occurs by means of electric resistance heating in the future forming zone, whereby the heating is carried out by means of a hold-down device ( ) and a matrix ( ) or by elements ( ) arranged next to or elements ( ) arranged in front of said hold-down device and matrix. The heating is initiated at the start of or immediately before the joining process and is completed before the forming begins.