Wheelchair direction control means

B - Operations – Transporting – 62 – D

Patent

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Details

342/32, 180/4, 1

B62D 11/00 (2006.01) A61G 5/00 (2006.01) A61G 5/04 (2006.01) B60L 15/20 (2006.01) B62D 11/04 (2006.01)

Patent

CA 1231886

WHEELCHAIR DIRECTION CONTROL MEANS Abstract of the Disclosure 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 wheel- chair 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.

492866

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