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. 19, 2005
Filed:
May. 21, 2001
Rudolf Luthi, Niederwangen, CH;
Rudolf Luthi, Niederwangen, CH;
Adval Tech Holding AG, Niederwangen, CH;
Abstract
The invention relates to a tubular rivet connection between at least one first () and one second metal sheet (). According to the invention, the tubular rivet () is made from the metal of the first metal sheet () by deforming, in a drawing direction (Z), the edge area of a first hole () located in the first metal sheet () into a second, larger hole () located in the second metal sheet (), whereby the second hole () located in the second metal sheet () is, in particular, gradually enlarged with regard to its diameter in the drawing direction (Z). The invention provides that the tubular rivet () is shorter in length in the drawing direction (Z) than the thickness of the second metal sheet (). To this end, the thickness tolerance of commercially available metal sheets is taken into account and damages to the tools and/or the formation of chips is/are prevented. With regard to the method for producing such a tubular rivet connection, the invention provides that the second metal sheet () is supported by a matrix, which has a diameter approximately corresponding to the diameter of the hole () in the second metal sheet ().