Land vehicles – Wheeled – Occupant propelled type
Patent
1992-10-07
1994-04-19
Hill, Mitchell J.
Land vehicles
Wheeled
Occupant propelled type
280244, 280253, 2802501, A61G 502, B62M 116
Patent
active
053039459
ABSTRACT:
An attachment is provided which may be mounted on a conventional wheelchair to enable the conventional wheelchair to traverse a regular terrain. The attachment comprises a pair of wheel drive assemblies which are mounted to the rear wheels of the wheelchair. Each of the wheel drive assemblies comprises inner and outer plates which embrace the inner and outer surfaces of the wheel and which are interconnected by means of bolts. The nut or bolt head is positioned outwardly of the outer surface of the outer plate and has a ratchet wrench mounted thereon. A hollow pipe embraces the upper end of the ratchet wrench and extends upwardly therefrom. An inverted U-shaped member has its opposite ends rotatably received by the upper ends of the hollow pipes.
REFERENCES:
patent: 4358126 (1982-11-01), Mitchell et al.
patent: 5020818 (1991-06-01), Oxford
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