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A suspension system for an automobile includes a compound torsion bar arrangement. The compound arrangement has a first bar which acts as a sway bar and a second bar which provides an output torque opposite to that of an input torque. The two bars are arranged to operate together and to be attached

A suspension system for an automobile includes a compound torsion bar arrangement. The compound arrangement has a first bar which acts as a sway bar and a second bar which provides an output torque opposite to that of an input torque. The two bars are arranged to operate together and to be attached to the same location of respective wheel support structures. Variation of the torsional characteristics of the two bars of the compound arrangement allows the roll stiffness to be varied while also varying the forces which tend to lift the inside wheel when the automobile is moving in a curved path.

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A suspension system comprising a frame, first wheel support means for supporting a wheel for vertical motion with respect to said frame, second wheel support means for supporting a second wheel for vertical motion with respect to said frame, and compound torsion means for controlling the relative mo

A suspension system comprising a frame, first wheel support means for supporting a wheel for vertical motion with respect to said frame, second wheel support means for supporting a second wheel for vertical motion with respect to said frame, and compound torsion means for controlling the relative movements among said frame and said first and second wheel support means, wherein said compound torsion means comprises first torsion means having opposed ends attached to respective ones of said first and second wheel support means such that movement of one of said wheel support means in a first direction with respect to said frame means causes a force to be applied to the other of said wheel support means in said first direction and second torsion means having opposed ends attached to respective ones of said first and second wheel support means such that movement of one of said wheel support means with respect to said frame means in said first direction causes a force to be applied to the other of said wheel support means in a direction opposite to said first direction wherein said first torsion means comprises a first bar and said second torsion means comprises a second bar coaxial with said first bar.