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:
Nov. 11, 2014
Filed:
May. 25, 2011
Anton Krawczyk, Windeck, DE;
Guido Holtmann, Windeck, DE;
Heinz Sydekum, Dittelbrunn, DE;
Uwe Herrmann, Wuerzburg, DE;
Rudolf Schulte, Hennef, DE;
Jörg Rösseler, Ruppichteroth/Winterscheid, DE;
Ingo Gelhausen, Fuerthen, DE;
Volker-oliver Hupperich, Sankt Augustin, DE;
Anton Krawczyk, Windeck, DE;
Guido Holtmann, Windeck, DE;
Heinz Sydekum, Dittelbrunn, DE;
Uwe Herrmann, Wuerzburg, DE;
Rudolf Schulte, Hennef, DE;
Jörg Rösseler, Ruppichteroth/Winterscheid, DE;
Ingo Gelhausen, Fuerthen, DE;
Volker-Oliver Hupperich, Sankt Augustin, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A vibration damper includes a cylinder in which a piston fastened to a piston rod executes a translational and a rotational movement relative to the cylinder. The piston is fixed to the piston rod by an axial fastener, and a device for preventing rotation by positive engagement is formed between the piston and the piston rod.