Vibration damper

US8881877B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Anton Krawczyk · Windeck, DE
• Guido Holtmann · Windeck, DE
• Heinz Sydekum · Dittelbrunn, DE
• Uwe Herrmann · Würzburg, DE
• Rudolf R. Schulte · Lompoc, US
• Jörg Rösseler · Ruppichteroth, DE
• Ingo Gelhausen · Fürthen, DE
• Volker-Oliver Hupperich · Sankt Augustin, DE

Key dates

• Filing date: May 25, 2011
• Grant date: Nov 11, 2014
• Expiry date: May 25, 2031

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F9/3228
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

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.