A bed that is convertible to a chair. The bed has a retracting frame mounted on a fixed frame. A patient support is formed by serially-connected head, seat, thigh, calf and foot panels, with the seat panel being fixed to the retracting frame. Movement of the retracting frame toward the foot end of the...http://www.google.ca/patents/US4862529?utm_source=gb-gplus-sharePatent US4862529 - Hospital bed convertible to chair
