Minimum energy curb negotiating wheelchair

Details Minimum energy curb negotiating wheelchair Minimum energy curb negotiating wheelchair

1989-05-22

1990-10-16

Marmor, Charles A.

Land vehicles

Step or abutment ascending type vehicle

Relatively movable running gear portions

280 53, 2802501, B62B 502

Patent

active

049629425

ABSTRACT:
A wheelchair which can negotiate curbs and other obstructions with a minimum of effort by the wheelchair occupant. The wheelchair has conventional front caster wheels and rear propulsion wheels, with first auxiliary support wheels located between the caster and rear wheels, and second auxiliary wheels being located outboard behind the rear wheels. The castered wheels and the rear wheels are structured to be raised or lowered by the wheelchair occupant. When a curb is encountered, the occupant propels the wheelchair forwardly until the first auxiliary wheels are at the edge of the curb, and the castered wheels are suspended. The castered wheels are then lowered to the bottom of the curb and the wheelchair propelled forward until the second auxiliary wheels are at the curb edge. The large rear wheels are then lowered to curb level, and the wheelchair is propelled by the occupant to the opposite curb, where the curb is ascended by turning the wheelchair 180.degree. and performing the wheel adjusting process in the opposite sequence.

REFERENCES:
patent: 572658 (1896-12-01), Marx
patent: 756419 (1905-04-01), Shoemaker
patent: 2701005 (1955-02-01), Bennett
patent: 3573877 (1971-04-01), Locke
patent: 3580591 (1971-05-01), Coffey
patent: 3592282 (1971-07-01), Soileau
patent: 3889964 (1975-06-01), Pitts
patent: 3905437 (1975-09-01), Kaiho
patent: 4132423 (1979-01-01), Chant
patent: 4455029 (1984-06-01), Taylor
patent: 4618155 (1986-10-01), Jayne
patent: 4747611 (1988-05-01), Daugherty

Affiliated with

Also associated with

Rating

Minimum energy curb negotiating wheelchair does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Minimum energy curb negotiating wheelchair, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Minimum energy curb negotiating wheelchair will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-845478