Land vehicles – Wheeled – Occupant propelled type
Patent
1996-09-13
2000-05-30
Boehler, Anne Marie
Land vehicles
Wheeled
Occupant propelled type
180 651, 180328, 180907, 297314, 297325, 297330, B60K 100, B60N 210
Patent
active
060682809
ABSTRACT:
A wheelchair provides a seat mounted to a base preferably through use of a universal joint to provide for selective orientation of the seat. A pair of actuators are interposed between the seat and base so that selective extension and retraction of the actuators orients the seat as desired. A level sensing device(s) provides suitable output signals to control the extension and retraction of the actuators, and thus the final orientation of the seat. This allows a wheelchair occupant to remain level while the chair traverses uneven ground or to selectively reposition the seat to relieve pressure points without the assistance of an attendant.
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