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US 5,615,756 AGranted
Shock absorber for a motor vehicle, which shock absorber has a piston valve
AssigneeFichtel & Sachs AG
InventorsManfred Grundei, Hans Reimer
Life of this patent
Estimating the term…
Abstract
Vibration damper, the piston valve of which is fastened to a piston rod, and which comprises a piston body with fluid passage channels which are covered by valve discs on support bodies with valve support surfaces, whereby the piston divides a cylinder tube into two work chambers by way of at least one piston ring, characterized by the fact that the piston body is realized in a disc shape, in one piece, and by way of stamping.
Claims15
A piston in a shock absorber, said piston being attached to a piston rod, said piston comprising:
- a piston body being formed by a substantially solid body of metal which has been deformed into shape by a stamping operation utilizing two die portions;
- said piston body including a plurality of raised and recessed portions on each side of the piston body;
- the raised portions on one side being opposite the recessed portions on the other side such that said piston body has a substantially constant thickness;
- said piston including a circumferential seal between the piston body and a cylinder of the shock absorber;
- and
- said seal having a longitudinal width greater than the thickness of the piston body.
3 more elements
Dependencies are inferred from the claim text.