Patent ID: 8636120

Claim:
A ride control system comprising: a shock absorber having a movable piston that divides the shock absorber into a lower volume and an upper volume; a center check valve that allows fluid to flow from the upper volume to the lower volume of the shock absorber; a back pressure actuator in fluid communication with the lower volume of the shock absorber, the back pressure actuator providing a selectable back pressure; an active control two-way valve having a first and second ports, the first port being in fluid communication with a shock absorber fluid reservoir; a refill check bypass two-way valve having a third and fourth ports, the third port being in fluid communication with the upper volume of the shock absorber; a back pressure two-way valve having a fifth and sixth ports, the fifth port being in fluid communication with the back pressure actuator and the sixth port being in fluid communication with the second port of the active control two-way valve and with the fourth port of the refill check bypass two-way valve; and a refill check valve that allows fluid to flow to the upper volume to the second port of the active control two-way valve from the fourth port of the refill check bypass two-way valve.