Patent ID: 9695900
Date: 2017-07-04
CPC Classifications: B60G,F16F

Claim:
1. A shock absorber comprising: an intermediate tube; a pressure tube disposed within the intermediate tube and forming a working chamber within the pressure tube; a piston rod disposed within the pressure tube for axial movement within the working chamber; a piston assembly secured to the piston rod and moveable slidably within the pressure tube, the piston assembly dividing the working chamber into an upper working chamber and a lower working chamber; an intermediate chamber formed between the intermediate tube and the pressure tube, the intermediate chamber being in communication with the working chamber; a reserve tube disposed about at least a portion of the intermediate tube to form a reservoir chamber between the reserve tube and the intermediate tube; a base valve assembly disposed adjacent to the lower working chamber and controlling a flow of working fluid between the lower working chamber and the reservoir chamber; and the base valve assembly including a digital valve assembly in communication with the intermediate chamber and including a valve element moveable between a first position and a second position to control a flow of the working fluid from the intermediate chamber into the reservoir chamber, to help control damping provided by the shock absorber, wherein the base valve assembly includes a plurality of digital valve assemblies each in communication with the intermediate chamber and the reservoir chamber.