Motor vehicles – Power – Electric
Patent
1995-11-01
1998-07-14
Camby, Richard M.
Motor vehicles
Power
Electric
180907, B60K 102
Patent
active
057789967
ABSTRACT:
A combination power wheelchair and power walker provides dual controls that may be used by either a seated user or a user walking behind and partially supported by the mobility aid. A hand control assembly provides a seated user with an on-off switch and forward-off-reverse switches for each motor. A direction controller assembly connects and provides coordinated movement of the left and right switch handles of the hand control assembly. The direction controller assembly allows the user to operate both switches with one hand by means of pushing, pulling or twisting motions, and replaces an expensive joy-stick assembly. A walker control assembly which overrides the hand control assembly, allows a walking user to operate both motors in either a forward or reverse direction, and to easily control walker speed and direction with gentle pushes or pulls on the walker handles. The left and right motors drive rear wheels through a shock absorbing flex coupling that tends to absorb the initial jolt when either motor is turned on.
REFERENCES:
patent: 3708182 (1973-01-01), Markiel
patent: 4506900 (1985-03-01), Kordsue
patent: 5058912 (1991-10-01), Harroun
patent: 5163188 (1992-11-01), Munroe
patent: 5224731 (1993-07-01), Johnson
patent: 5265689 (1993-11-01), Kaufmann
patent: 5366036 (1994-11-01), Perry
patent: 5409074 (1995-04-01), Wilson et al.
patent: 5556121 (1996-09-01), Pillot
patent: 5592997 (1997-01-01), Ball
Harris Susan R.
Prior Ronald E.
Camby Richard M.
Thompson David S.
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