Invalid hoist

Details Invalid hoist Invalid hoist

1985-02-11

1987-01-06

Murtagh, John E.

Beds

With means for relocating an invalid

With a hoisting, lifting, elevating, or raising device

5 81B, 187 9R, 414921, A61G 710

Patent

active

046335382

ABSTRACT:
An invalid hoist comprises a base having a column support socket, an upstanding column detachably mounted in said socket and a lifting arm extending from the column. Said arm is movable along the column by a screw-and-nut lifting mechanism within the column, with the nut of said mechanism being coupled to the arm. A reversible electric motor unit and battery for energization of the motor are mounted on said base with an output shaft of a reduction gear box of the motor unit aligned with and directly coupled to the lower end of the screw of said lifting mechanism to provide a drive from the motor to the screw, through the socket. The drive between said output shaft and said screw is provided by a coupling which can readily be broken to enable the column to be detached from the base without disturbing the motor.

REFERENCES:
patent: 1472782 (1923-11-01), Barber
patent: 2846091 (1958-08-01), Heffner
patent: 2899808 (1959-08-01), Berens
patent: 2962730 (1960-12-01), Carnes et al.
patent: 3396556 (1968-08-01), Giegrich
patent: 3798984 (1974-03-01), McMinn
patent: 3940808 (1976-03-01), Petrini
patent: 3981484 (1976-09-01), James
patent: 3998284 (1976-12-01), James
patent: 4172369 (1979-10-01), Hayes
patent: 4232412 (1980-11-01), Petrini
patent: 4324317 (1982-04-01), Winkelblech
patent: 4353436 (1982-10-01), Rice et al.

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