Chair lift for stairs

Abstract

Chair Lift for Stairs with a light weight metal chair frame mounted to a pair of metal slidable sled rails, the chair frame supporting a fabric seat and back, a set of wheels mounted to the base of the rails, a thigh retaining sling mounted below the chair frame, an electric winch type mechanism mounted between the sled rails, the winch mechanism having a pulling cable located near the center line of the chair frame, the chair frame also containing a rechargeable battery to be used as a power source for said winch, said chair frame also having a manual pull strap attached to the top cross rail of said chair frame, said chair frame being collapsible for easy transport, and said chair frame also includes a retractable third wheel that can be deployed at the bottom rear center of said chair so that said chair can act as an emergency wheel chair.

Dependencies are inferred from the claim text.