Abstract: A wheel chair, including a frame, with the rear wheels mounted independently, each on an elongated arm, which extends rearward from a torsion bar. The center of the torsion bar is normally gripped against rotation to prevent transmittal of torsion from one end of the bar to the other, but the torsion bar may be turned through an arc to raise and lower the rear wheels, so as to maintain the chair level when going up or down a grade. A leg support panel is mounted on a linkage to enable it to pivot about an axis corresponding to the knee axis of the patient and the back support pivots between upright and horizontal position generally about the hip axis of the person. A padded support extends upward when the back support is lowered from its erect position in order to maintain continued support of the head.

Abstract: A shock absorber utilizing two separating members hingedly attached at their first ends and an arm connected to one of the members to dampen impact shock normally transmitted to a body connected to the other member.