Supports – Stand – Tilting support surface
Patent
1988-07-11
1989-10-03
Foss, J. Franklin
Supports
Stand
Tilting support surface
248394, 297325, A45D 1904
Patent
active
048711373
ABSTRACT:
A seat lifting apparatus comprises a seat lifting device disposed between a base frame and a seat frame attached onto a seat side, and independently moving up or down the front and rear sides of the seat frame; front and rear shafts disposed in the seat lifting device and respectively disposed on the front and rear sides of the seat to support the seat; front and rear engaging devices respectively disposed in the front and rear shafts; and a resilient device connected between the front and rear engaging device and balancing the lifting operation of the seat on the front and rear sides thereof.
A seat lifting apparatus also comprises a seat lifting device disposed between a lower frame and an upper frame disposed above the lower frame and attached onto a seat side, and moving the upper frame up or down; a gear rotatably supported by the lower frame; a plate rotatable in association with the rotation of the gear and detachably attached to the gear; and a shaft disposed in the seat lifting device and fixed to the plate, the shaft being rotated by the rotation of the plate to move the upper frame up or down.
REFERENCES:
patent: 4159095 (1979-06-01), Pallant
patent: 4422611 (1983-12-01), Kitsuda
patent: 4438895 (1984-03-01), Rees
patent: 4445661 (1984-05-01), Langmesser
patent: 4643383 (1987-02-01), Fukuta
patent: 4648578 (1987-03-01), Sakamoto
patent: 4720070 (1988-01-01), Nishino
Foss J. Franklin
Fujikiko Kabushiki Kaisha
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