Fichtel & Sachs Ag

Mannesmann Sachs Ag

Robert Wieser

Norbert Deppert

Manfred Grundei

Peter Wolki

Peter W&ouml;lki

A mounted piston ring for a piston/cylinder unit. The piston ring covers a circumferential surface of the piston and seals it off from the cylinder. The piston ring has a width which is greater than the height of the circumferential surface, so that there is an axially projecting length of the piston ring relative to the piston. This axially projecting length is shaped into a spring end which is axially supported on a top side of the piston. One spring end having a circular-arc-shaped transition which is designed to be between 90&deg; and 180&deg;, and which spring end comes to bear on the first top side of the piston. The other spring end having an annular bearing surface, comes to bear in the region of the opposite second top side of the piston. In this region the other spring end, with respect to the shaping angle, is adapted to the angle between the circumferential surface and the second top side.

Piston ring

A shock absorber with an affixed or clamped-on piston ring for a piston-cylinder unit, whereby the piston ring covers a lateral surface of the piston and creates a seal with respect to the cylinder, characterized by the fact that the piston ring has a width which is greater than the lateral surface, so that there is a projecting end of the piston ring with respect to the piston, which projecting end is shaped into a spring end which is supported on the cover side on the piston.

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Viersen, Germany

Robert Wieser