Patent ID: 6213263
Filing Date: 2001-04-10
Classification: F16F

Abstract:
An oil shock absorber system for a vehicle comprising:a cylinder;a piston in said cylinder for driving oil between said piston and a bottom of said cylinder toward a reservoir, said reservoir having a deformable reserve chamber for receiving the oil and a pressurized chamber for deforming the chamber, said reservoir having an intermediate chamber and at least three different orifices wherein a flow path for the oil extends through said intermediate chamber and said orifices into said reserve chamber, one of said orifices being blocked by a first adjustable non-return valve constituting an adjustable hydraulic brake enabling the oil to evacuate said intermediate chamber into the reserve chamber only when pressure exerted by said piston on said oil exceeds a predetermined pressure, and a second adjustable non-return valve blocking a second orifice of said three orifices and disposed between said intermediate chamber and said reserve chamber, said second adjustable non-return valve being adjustable for a range of piston displacement speeds that lies between a first low speed and hydraulic brake speeds.