Patent ID: 7445217
Filing Date: 2008-11-04
Classification: A61H

Abstract:
1. A walk aiding apparatus, comprising: an electric gear motor attachable to a frame of a four-wheeled walker device; a first sprocket rotatably coupled to the gear motor and driven thereby; a rotatable cam shaft stabilized by a pair of bearings, the cam shaft having a second sprocket coupled thereto; a plurality of cams mounted to the cam shaft, the cams being adjustably arranged between a pair of nuts and secured thereby; a belt extending between the first and second sprockets; and a battery selectably coupled to the electric gear motor through an electrical switch, the electric gear motor being energized when the electrical switch is actuated, wherein the electric gear motor, when energized, rotates the cam shaft and, in turn, the cams, such that the cams periodically contact a surface to effect movement of the wheels of the walker device with respect to the surface.