Patent ID: 7909342

Claim:
An electromechanical semi-active anti-roll device for adjusting a stiffness of a suspension of a vehicle having a body and a set of wheels comprising: a torsion bar having a torsion stiffness and extending through a U-shape to present a central portion for mounting to the body of the vehicle and a first lateral arm and a second lateral arm, said first lateral arm being disposed at one end of said central portion and extending outwardly therefrom to engage one of the wheels of the vehicle and said second lateral arm being disposed at the other end of said central portion and extending outwardly therefrom to engage another of the wheels of the vehicle, said central portion of said torsion bar defining a first half-bar and a second-half bar and a coupling mechanism disposed between and mechanically connecting said first and second half-bars, said coupling mechanism including at least one elongated element of an elastically deformable material for elastically deforming in a first direction in response to rotation between said first and second half-bars, said at least one elongated element having a cross-section being non-circular for presenting a first flexion stiffness in one direction and for presenting a different second flexion stiffness in another direction, and a controller in electrical communication with said coupling mechanism for rotating said at least one elongated element from a first state having said first flexion stiffness in said first direction when deforming in response to rotation between said first and second half-bars to a second state having said second flexion stiffness in said first direction when elastically deforming in response to rotation between said first and second half-bars to change said torsion stiffness of said torsion bar.