US Patent 7392998 Suspension device for motor vehicles

The present invention relates to a suspension device for the load-bearing and resilient support of a wheel in a motor vehicle, comprising at least one spring cylinder with a piston, which is guided in a manner moveable relative to it in a pressure cylinder, and comprising a driving device for converting pivoting movements of a wheel oscillating-crank supporting arm, which movements oscillate about an oscillating-crank axis, into the relative movements between the pressure cylinder and piston, the piston acting counter to an elastically compressible spring medium (FM) in order to produce a load-bearing supporting spring force (F), the driving device being designed as a gearwheel mechanism.