Patent ID: 6651788
Filing Date: 2003-11-25
Classification: B60G,F16F

Abstract:
A bottom valve for a motor-vehicle double-tube shock absorber, said valve comprising a main damping valve (8), a bypass control borehole (5), and a prestressed bypass valve (10);said bypass valve, associated with said bypass control borehole (5), acting as a pressure relief valve of which the action can be adjusted from outside the shock absorber, said bypass valve comprising a valve head, a valve stem connected to the valve head, and a prestressing spring (15); wherein a spacing between the valve head of said bypass valve (10) and said bypass control borehole (5) is adjustable by means of an adjustment bolt (13) accessible from outside the shock absorber, whereby said bypass valve (10) can be adjusted at a defined setpoint of prestressing by said adjustment bolt (13); the bypass valve (10) is displaceably received by said valve stem in a receiving borehole of the adjustment bolt (13); and the prestressing spring (15) rests at one end against the valve head opposite the bypass control borehole (5) and at the other end against a disk (11), said disk being displaceably mounted on the valve stem and retained by the prestressing spring (15) against a shoulder at the valve stem.