Hydraulically controlled stabilizer bar system

Claim 1

In a motor vehicle, a stabilizer bar system comprising: (a) a stabilizer bar having a first end located at a first side of the vehicle and a second end located at a second side of the vehicle; (b) a first hydraulic actuator having a first reciprocating piston rod connected to the first end of the stabilizer bar and a first closed working cylinder connected to a first lower suspension member, the first closed working cylinder including a first piston dividing a first interior volume of the first working cylinder into first upper and first lower fluid chambers; (c) a hydraulic pump having an intake connected to a fluid reservoir; (d) a first hydraulic line connected to an outlet of the hydraulic pump; (e) first and second check valves connected to the first hydraulic line; (f) a first pressure control line connected to the first check valve, the first upper fluid chamber and a first controllable pressure control valve; (g) a second pressure control line connected tot he second check valve, the first lower fluid chamber and a second controllable pressure control valve; (h) a second hydraulic line connected to the first pressure control valve and the reservoir; (i) a third hydraulic line connected to the second pressure control valve and the reservoir, wherein pressure in the first pressure control lien regulates pressure in the first upper fluid chamber and is responsive to the first controllable pressure control valve and wherein pressure in the second pressure control line regulates pressure in the first lower fluid chamber and is responsive to the second controllable pressure control valve.