Patent ID: 8997952
Filing Date: 2015-04-07
Classification: F16F

Abstract:
1. A shock absorber for a wheel suspension of a motor vehicle, the shock absorber comprising: a damper tube at least partially filled with damping liquid and extending along an axis, a piston rod axially shiftable inside the damper tube, a piston housing connected to the piston rod and subdividing an interior of the damper tube into a piston rod-side working chamber and a working chamber remote from the piston rod, an on-off control valve axially movable inside the piston housing between a closed and an open position, the piston rod-side working chamber and the working chamber remote from the piston rod being hydraulically interconnected via the piston housing, a first damping valve inside the piston housing, having a soft damping characteristic, through which the damping liquid may flow in both flow directions, and connectable to a flow path of the damping liquid from one into the other working chamber through the control valve, and a second damping valve connected hydraulically in parallel to the first damping valve, having a hard damping characteristic, through which the damping liquid may flow in both flow directions, and in the interior of the piston housing.