Wheelchair direction control means

Details Wheelchair direction control means Wheelchair direction control means

1984-10-12

1985-10-29

Wayner, William E.

Motor vehicles

Steering by driving

Combined with manual steering

180 65, 318587, B62D 1100

Patent

active

045496242

ABSTRACT:
A third caster wheel is mounted between the main wheels of a power wheelchair to engage the terrain over which the wheelchair travels. Turning of the wheelchair from a straight line course as a result of uneven terrain is immediately corrected by initially sensing the turning with the third caster wheel. A signal responsive to turning of the caster wheel stem is fed to the left and right wheelchair drive motors to increase the speed of one and decrease the speed of the other so as to return the wheelchair to its straight line course. The caster wheel sensing and feedback system is disabled when an intentional turning of the wheelchair is carried out with the conventional joy stick.

REFERENCES:
patent: 2905878 (1959-09-01), Olson
patent: 3756335 (1973-09-01), Elsele et al.
patent: 3814199 (1974-06-01), Jones

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