Patent ID: 6318737
Filing Date: 2001-11-20
Classification: B60G,F15B

Abstract:
A roll control actuator for installation between first and second axially aligned parts of a torsion bar comprises a first cylindrical housing connectable at one end to the first part of the torsion bar and having a cylindrical wall with an inner surface; a second cylindrical housing connectable at one end to the second part of the torsion bar and having a cylindrical wall with an inner surface; the cylindrical wall of the first housing being coaxial with, rotatable relative to, and axially fixed relative to, the cylindrical wall of the second housing; a shaft positioned inside the first and second housings and being capable of moving in the axial direction relative to the first and second housings; a first tripot joint mounted on the shaft and having rollers positioned in helically extending grooves formed in the inner surface of the cylindrical wall of the first housing; a second tripot joint mounted on the shaft and having rollers positioned in helically extending grooves formed in the inner surface of the cylindrical wall of the second housing; the grooves in the inner surface of the cylindrical wall of the firs t housing having an opposite rotational direction about the axis to the grooves in the inner surface of the cylindrical wall of the second housing; and control means associated with the shaft and the first and second housings to control the relative rotational movement therebetween.