Chairs and seats – Movable bottom – Interconnected with back for relative concurrent movement
Patent
1975-06-23
1976-10-12
Mitchell, James C.
Chairs and seats
Movable bottom
Interconnected with back for relative concurrent movement
254 86R, 254 93VA, 297DIG4, A47C 102
Patent
active
039853896
ABSTRACT:
Elevating means for use with a wheelchair said means being adapted to be secured to the side frames of the wheelchair and having hydraulically actuated lifting means which when operated extend downwardly to engage the ground and lift the side frames of the chair upwardly.
REFERENCES:
patent: 2238445 (1941-04-01), Kilstrom
patent: 2676643 (1954-04-01), Miller et al.
patent: 3123400 (1964-03-01), Paulson
patent: 3352461 (1967-11-01), Dascanio
Bardic Engineering Limited
Mitchell James C.
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