Wheelchair

Details Wheelchair Wheelchair

1996-07-30

1999-07-27

Boehler, Anne Marie

Motor vehicles

Steered by walking attendant

Handle movement controls vehicle drive

180 65, 180 651, 180907, B62D 5104

Patent

active

059274140

ABSTRACT:
A less heavy and small-sized assisted wheelchair that does not require so much manual labor of an assistant's handle operation. The wheelchair D comprises a frame assembly 1, casters 2 and 3, driving wheels 4 and 5, handrims 6 and 7, and a battery portion 11. In the inside of the casing 14 which covers the hub shaft 13 of the driving wheel 4, there are disposed a driving force detector 40 for detecting the human driving force applied to the handrim 6, a motor 21 for auxiliarily driving the driving wheel 4, and a controller 20 for controlling the motor 21 based on the result of the detection by the driving force detector 40. Also, on the upper rear portion of the frame assembly 1, there is disposed a driving force detector 50 for detecting the human driving force applied to the handles 8 and 9 by the assistant. The controller 20 controls and drives the motor 21 in accordance with the amount of human driving force of the assistant detected by the driving force detector 50.

REFERENCES:
patent: 3802524 (1974-04-01), Seidel
patent: 3893529 (1975-07-01), Karchak
patent: 5125468 (1992-06-01), Coker
patent: 5161634 (1992-11-01), Ichihara et al.
patent: 5497056 (1996-03-01), Kurland
patent: 5648708 (1997-07-01), Littlejohn
patent: 5732786 (1998-03-01), Fujigaki
Abel et al., An Evaluation of Different Designs of Providing Powered Propulsion for Attendant Propelled Wheelchairs, Oct. 31, 1991, pp. 1863-1864.

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