Zf Friedrichshafen Ag

Anton Krawczyk

Steffen Heyn

Jörg Rösseler

Bernd Zeissner

Heinz-Joachim Gilsdorf

Heinz Sydekum

Thomas Thein

Wolfgang Breun

Klaus Sauer

Frank Gundermann

Guido Holtmann

Volker-Oliver Hupperich

Wilhelm-Heinrich Broocks

Holger Beyer

Ludwig Gampl

Uwe Herrmann

Rudolf Schulte

Ingo Gelhausen

Andreas Foerster

Uwe Boecker

Herbert Bies

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.

Vibration damper

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.

Vibration damper comprising a cylinder in which a piston rod is guided with freedom of axial movement, where the piston rod cooperates with a piston arrangement comprising a first, stationary piston and at least one additional piston, which is supported on the piston rod with freedom of axial movement against the elastic force of at least one restoring spring, where the cylinder is divided by the stationary piston and by the minimum of one axially movable piston into a working space on the side of the piston facing the piston rod, a working space on the side of the piston facing away from the piston rod, and a working space between the two pistons, where valve-equipped through-openings control a connection between the working spaces, and where the axial movement of the minimum of one axially movable piston is limited by a hydraulic pressure stop.

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Windeck, Germany

Anton Krawczyk