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. 05, 2008
Filed:
May. 30, 2006
Gerd Morig, Seelze, DE;
Wolfgang Gnirk, Lehrte, DE;
Bernd Reich, Neustadt, DE;
ContiTech Luftfedersysteme GmbH, Hannover, DE;
Abstract
A flanged plate () for a rolling-lobe air spring has on its rounded portion an annular, closed, concave, rounded holding recess () which has a circular arcuate shape. The plate is provided with the recess before surface treatment. A correspondingly shaped holding bead () in the upper flanging tool () engages in this holding recess and form-tightly holds the tool () and the flanged plate (). In this way, sharp-edged holding grooves, which can damage the surface of the flanged plate, are unnecessary. The flanging method, the flanging device, the flanged plate and the rolling-lobe air spring provided with a flanged plate of the above type are described.