Chairs and seats – Movable bottom – Tiltable
Patent
1993-03-19
1994-12-27
Brown, Peter R.
Chairs and seats
Movable bottom
Tiltable
297310, 297DIG4, 297DIG10, A61G 500
Patent
active
053759133
ABSTRACT:
A power lifting device to attach to a conventional wheelchair (12) includes a lift seat (10) positioned on seat rails of the wheelchair and a tray attached to the runners of the wheelchair below the wheelchair seat rails and stabilized by a stabilizing wheel (6) to hold a power source (15) and (16) and a hydraulic cylinder (17). A hinge (9) on each side of the lift seat enables the back of the lift seat (10) to be raised by a piston of the hydraulic cylinder (17) activated by the power source when a switch (13) is engaged. The power lifting device moves an occupant from a seated position to a substantially upright position enabling the occupant to be moved by a second person with a minimum of lifting by the second person.
REFERENCES:
patent: 2869623 (1959-01-01), Poulin
patent: 3023048 (1962-02-01), Barton
patent: 3964786 (1976-06-01), Mashuda
patent: 4249774 (1981-02-01), Andreasson
patent: 4390076 (1983-06-01), Wier et al.
patent: 4456086 (1984-06-01), Wier et al.
patent: 4773494 (1988-09-01), Anderson
patent: 5203610 (1993-04-01), Miller
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