Multi-function electric wheel-chair

Details Multi-function electric wheel-chair Multi-function electric wheel-chair

1994-06-30

1995-10-17

Hill, Mitchell J.

Land vehicles

Wheeled

Occupant propelled type

180 65, 180907, 2803041, 297DIG10, A61G 514, B62M 114

Patent

active

054583497

ABSTRACT:
A multi-fumction electric wheel-chair is disclosed which comprises: a main frame foundation having two rollers, a front portion, a back portion; a chair-like sitting block placed above the main frame foundation, the sitting block comprising a backing plate, a sitting plate and two arm-rest plates; a drive-gear is placed under a rear part of the sitting block; two pedal-rods placed in front of the sitting block which are symmetrically hinged to a front part of the sitting plate. The multi-function wheel-chair is characterized in that: two L-shaped supporting rod, each having an upper part which curved upwards; the chair-like sitting block is hinged to the backing plate, the backing plate has a back part which is hinged to the upper parts of the two L-shaped supporting rod which curve upwards; the L-shaped supporting rod is placed under the sitting plate and parallels to the sitting plate; the front end of the L-shaped supporting rod is hinged to a vertical rod of a beam column on the frame foundation; an extended supporting rod, which extends downwardly on the front of two symmetric sides of the sitting plate, is hinged to an upper flank of the front portion of the main frame foundation; a transverse worm of a drive-gear which is placed in a bearing pedestal placed on the back portion of the main frame foundation, the transverse worm is driven by a motor; a worm-gear which is placed in a gear-box of two extended parts which are extended from the transverse worm; two inclined screw control racks with spiral thread are placed inside an inner hole of the worm-gear, each of the screw control racks has an upper end which is hinged to a middle of a side rod, which is joined into a flank of the sitting plate.

REFERENCES:
patent: 5096008 (1992-03-01), Mankowski
patent: 5346280 (1994-09-01), Deumite

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