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:
Dec. 16, 2008
Filed:
Apr. 15, 2005
Alexander Heim, Tettnang, DE;
Andreas Rinsdorf, Frendenberg, DE;
Alexander Heim, Tettnang, DE;
Andreas Rinsdorf, Frendenberg, DE;
Muhr und Bender KG, Attendorn, DE;
Abstract
An axially acting undulating washer or wave-shaped spring consisting of a closed annular member which comprises a central X-axis and which is periodically wave-shaped across the circumference, wherein a wave line extends so as to monotonically rise or fall between a plurality of identical minima and identical maxima and wherein in the minima and maximum of the wave line there are formed contact points of the annular member relative to axis-normal contact faces, wherein, starting from each minimum and maximum, the annular member, on both sides, i.e. in each circumferential direction, comprises at least two wave line portions which directly adjoin one another and which, with an increasing axial load, are individually flattened and made to contact and contact faces one after the other.