Curb ascending and descending wheelchair

Details Curb ascending and descending wheelchair Curb ascending and descending wheelchair

1987-07-31

1988-05-31

Love, John J.

Land vehicles

Wheeled

Occupant propelled type

280 52, 280298, 280DIG10, B62B 502

Patent

active

047476117

ABSTRACT:
Selectively operable spiral cam wheels are positioned adjacent and rotate on a common axis with the drive wheels and are attachable to the drive wheels for progressively raising the wheelchair in response to rotation of the drive wheels in one direction and for progressively lowering the wheelchair in response to rotation of the drive wheels in the opposite direction. The spiral cam wheels are also attachable to the wheelchair frame so that the drive wheels are free to be rotated in the normal manner. A lifting arm is pivotally supported at one end on each side of the frame of the wheelchair and the other end is moved by the spiral cam wheels to progressively lift the casters of the wheelchair as the wheelchair is moved toward a curb to be traversed. Embodiments of the wheelchair are disclosed in which the wheelchair is raised as it is moved in a forward direction toward the curb, and in which the wheelchair is raised as it is moved in a rearward direction toward the curb.

REFERENCES:
patent: 3226129 (1965-12-01), McKinley
patent: 3499501 (1970-03-01), Fitzgerald et al.
patent: 4674757 (1987-06-01), Martin

Affiliated with

Also associated with

Rating

Curb ascending and descending 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 Curb ascending and descending wheelchair, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Curb ascending and descending wheelchair will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1869992