Patent ID: 7234714

Claim:
A roll control system for installation between axially aligned wheels of a motor vehicle, the roll control system comprising a torsion bar; a damper attached to one end of the torsion bar and attachable to one of the wheels; and attachment means attached to the other end of the torsion bar and attachable to the other wheel; wherein the damper comprises an axially extending cylindrical housing; a piston slidably mounted inside the housing; a piston rod connected to the piston, extending out of one end of the housing, and movable in an axial direction relative to the housing; a floating piston slidably mounted in the housing between the piston and the other end of the housing; a compensation chamber between the floating piston and the other end of the housing containing a first pressurised fluid; a compression chamber between the floating piston and the piston containing a second pressurised fluid; a rebound chamber between the piston and the one end of the housing containing the second pressurised fluid; valve means on the piston allowing restricted flow of the second pressurised fluid between the compression chamber and the rebound chamber; a rebound stop positioned in the rebound chamber between the piston and the one end of the housing and providing a spring-effect on the movement of the piston towards the one end of the housing; and a compression stop providing a spring-effect on the movement of the piston towards the floating piston.