| 摘要 |
A wheelchair (A) provides a seat (B) mounted to a base (C) preferably through use of a universal joint (50) to provide for selective orientation of the seat. A pair of actuators (52, 54) are interposed between the seat (B) and the base (C) so that selective extension and retraction of the actuators (52, 54) orients the seat (B) as desired. A level sensing device can provide suitable output signals to control the extension and retraction of the actuators (52, 54), and thus the final orientation of the seat (B). This allows a wheelchair occupant to remain level while the chair (A) traverses uneven ground or to selectively reposition the seat (B) to relieve pressure points without the assistance of an attendant. <IMAGE> |
