Wheelchair stair climbing control system

Details Wheelchair stair climbing control system Wheelchair stair climbing control system

1989-11-21

1992-06-23

Marmor, Charles A.

Motor vehicles

Special driving device

Portable track

180907, 280 522, 280DIG10, 36442405, A61G 506

Patent

active

051234955

ABSTRACT:
The present invention provides a sensor for detecting the angle of an incline, such as a staircase, before it is reached by the wheelchair. A control signal is provided to a motor for tilting the seat to cause the seat to be tilted to a predetermined minimum safe angle before the wheelchair reaches the staircase. The minimum safe angle is an angle of tilt at which the wheelchair will not roll over if the tilting mechanism should fail to completely rotate the seat to a horizontal position and as the stairs are descended. The minimum safe angle is determined by the position of the center of gravity of the wheelchair which is affected by the users weight. If the seat does not achieve this minimum tilt, the wheelchair is prevented from going over the stairs.

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