Wheelchair having apparatus for climbing stairs

Details Wheelchair having apparatus for climbing stairs Wheelchair having apparatus for climbing stairs

1994-06-27

1995-06-13

Johnson, Brian L.

Land vehicles

Wheeled

Occupant propelled type

280 522, 280DIG10, B62D 114

Patent

active

054235634

ABSTRACT:
A wheelchair having apparatus mounted thereon which, when placed in stair-climbing position, enables an occupant of the wheelchair to turn the large wheels of the wheelchair in a reverse direction, thereby causing a plurality of sprockets and chains mounted thereon to climb a stairway. The occupant places the apparatus in stair-climbing position by utilizing a hand air or other fluid pump mounted on the frame of the wheelchair to pump fluid into actuating fluid cylinders, thereby causing the pistons and associated piston rods of the fluid cylinders to extend and to place the apparatus in the climbing position. In this position the occupant may also cause the wheelchair to descend a stairway. By reversing a valve, the occupant may pump fluid into the cylinders to place the climbing apparatus in the stowed-away position, in which position the wheelchair may be used as a normal wheelchair.

REFERENCES:
patent: 3231290 (1966-01-01), Weyer
patent: 3241848 (1966-03-01), Flory
patent: 4061129 (1977-12-01), Last
patent: 4200161 (1980-04-01), Pennington, Jr.
patent: 4512588 (1985-04-01), Cox
patent: 5158309 (1992-10-01), Quigg
patent: 5308098 (1994-05-01), Shea

Affiliated with

Also associated with

Rating

Wheelchair having apparatus for climbing stairs does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wheelchair having apparatus for climbing stairs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wheelchair having apparatus for climbing stairs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1304870