Manually operated, motor assisted wheelchair

Details Manually operated, motor assisted wheelchair Manually operated, motor assisted wheelchair

1997-09-24

2000-09-05

Boehler, Anne Marie

Motor vehicles

Steering by driving

Independently operable drive motors

180 652, 180907, 73 109, 7386253, B62D 1104

Patent

active

061128376

ABSTRACT:
A wheelchair having an electric motor power assist controlled by a sensor that senses the manual force applied by a rider to the hand rim. An arrangement is provided for facilitating adjustment of the sensor so as to permit accurate adjustment without requiring special tools or gages. This mechanism includes an LED that outputs a signal when the sensor signal output is zero. In addition, an arrangement is provided for facilitating the adjustment of the spring and also for ensuring that the hand rim is axially located so as to preclude cocking and binding.

REFERENCES:
patent: 4395920 (1983-08-01), Kurton et al.
patent: 5031455 (1991-07-01), Cline
patent: 5234066 (1993-08-01), Ahsing et al.
patent: 5248007 (1993-09-01), Watkins et al.
patent: 5257540 (1993-11-01), Bower et al.
patent: 5648708 (1997-07-01), Littlejohn
patent: 5771988 (1998-06-01), Kikutani et al.
patent: 5818189 (1998-10-01), Uchiyama et al.
European Search Report dated Nov. 2, 1998.

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