Patent ID: 7395907
Filing Date: 2008-07-08
Classification: F16F,Y10T

Abstract:
1. Shock absorber, comprising: a cylinder section and a piston section that can be moved therein, the piston section and cylinder section each being provided with fixings for connection with parts that can be moved with respect to one another and said piston section being sealed with respect to said cylinder section in order to delimit first and second chambers on either side thereof, said first chamber being close to the fixing of said piston section and said second chamber being close to the fixing of said cylinder section, a connecting channel being arranged between said first and second chambers for connecting said first and second chambers, said connecting channel containing a valve assembly for influencing a fluid stream through said connecting channel, said valve assembly comprising a valve seat, a movable part that can move with respect to the valve seat under liquid pressure, and a closing plate to seal on said valve seat, said movable part forming a boundary wall of an auxiliary chamber, said auxiliary chamber being provided with an inlet which, viewed in the direction of the movement of the fluid, opens upstream of said valve assembly, wherein said auxiliary chamber is provided with an outlet opening downstream of said valve assembly, and wherein the volume of said auxiliary chamber can be increased with respect to initial or rest volume under the influence of liquid issuing through said inlet, resulting in further pressing of the closing plate to said valve seat, and wherein an effective surface area of said movable part that is exposed to pressure in the auxiliary chamber decreases as the volume of said auxiliary chamber increases.