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:
Aug. 21, 2012
Filed:
Aug. 18, 2006
Bernd Zeissner, Volkach/Gaibach, DE;
Andreas Foerster, Schweinfurt, DE;
Frank Gundermann, Marktsteinach, DE;
Steffen Heyn, Niederwerm, DE;
Anton Krawczyk, Windeck, DE;
Uwe Boecker, Lohmar, DE;
Thomas Thein, Sennfeld, DE;
Wolfgang Breun, Niederwerm, DE;
Herbert Bies, Grafschaft/Vettelhoven, DE;
Holger Beyer, Pfarrweisach, DE;
Ludwig Gampl, Schwanfeld, DE;
Heinz-joachim Gilsdorf, Donnersdorf, DE;
Klaus Sauer, Roethlein, DE;
Bernd Zeissner, Volkach/Gaibach, DE;
Andreas Foerster, Schweinfurt, DE;
Frank Gundermann, Marktsteinach, DE;
Steffen Heyn, Niederwerm, DE;
Anton Krawczyk, Windeck, DE;
Uwe Boecker, Lohmar, DE;
Thomas Thein, Sennfeld, DE;
Wolfgang Breun, Niederwerm, DE;
Herbert Bies, Grafschaft/Vettelhoven, DE;
Holger Beyer, Pfarrweisach, DE;
Ludwig Gampl, Schwanfeld, DE;
Heinz-Joachim Gilsdorf, Donnersdorf, DE;
Klaus Sauer, Roethlein, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
Disclosed is a vibration damper comprising a cylinder in which a piston rod is guided in an axially movable manner. A first piston is mounted stationarily on the piston rod while a second piston that is equipped with at least one valve disk biased by a spring assembly is mounted on the piston rod so as to be axially movable counter to a force of at least one support spring. The spring assembly is provided with at least one spring plate on which the spring assembly rests. The second piston is retained by a fixing sleeve which supports the at least one spring plate. The structural unit encompassing the fixing sleeve and the at least one spring plate is fitted with an axially effective separating joint for a locking connection inside the structural unit. The entire structural unit can be axially displaced towards the at least one support spring.