Abstract: A wheelchair having a lifting device wherein the seat and the footrest are independent from each other and are mounted on the top ends of two deformable quadrilaterals extending upwards from the chassis and sharing a common moving portion, and wherein the raising and lowering control devices comprise a drive member interposed between the chassis and one of the moving members of one of the quadrilaterals, and suitable for controlling the displacement of said quadrilaterals between a stable folded state and a stable unfolded state.

Abstract: A motorized assistance device for use on an elevator wheelchair for handicapped persons includes a supporting cradle intended to be fitted on the chassis of the wheelchair; a motorization unit mounted on the cradle and including a mobile member, with reversible displacement, operatively connected to a transmission; at least one articulated system actuated by the transmission and including a first set of levers intended to act on articulated structure of the wheelchair, and a second set of levers actuated by the first set of levers and intended to act on a maneuvering assembly; and a unit for controlling operation of the motorization unit. The device is particularly applicable to manually controlled wheelchairs.

Abstract: The invention is concerned with assistance to handicapped persons. The device according to the invention is in the form of an articulated structure comprising two symmetrical lateral systems each comprising a first deformable quadrilateral, a second deformable quadrilateral, a trilateral, an elastic member and a manoeuvring assembly. The invention is applicable to wheelchairs for handicapped persons or invalids.