Land vehicles – Wheeled – Coasters
Reexamination Certificate
2007-07-19
2008-11-04
Restifo, Jeffrey J (Department: 3618)
Land vehicles
Wheeled
Coasters
C135S067000
Reexamination Certificate
active
07445217
ABSTRACT:
A walk aiding apparatus. An electric gear motor is attachable to a frame of a wheeled walker device and includes a first sprocket rotatably coupled to the gear motor. A rotatable cam shaft is stabilized by a pair of bearings, the cam shaft having a second sprocket coupled thereto. A set of cams are adjustably mounted to the cam shaft. A belt extends between the first and second sprockets. A battery is selectably coupled to the electric gear motor through an electrical switch, the electric gear motor being energized when the electrical switch is actuated. 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.
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Eley James R.
Eley Law Firm Co.
Forhan Michael A.
Restifo Jeffrey J
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