Elevator device

Details Elevator device Elevator device

1980-01-28

1982-04-13

Spar, Robert J.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187 9R, 280163, B66B 1104

Patent

active

043243177

ABSTRACT:
This invention is an electrically powered elevator comprised of a hollow support member through which a screw passes. A reversible electric motor rotates the screw. A support nut attached to a platform engages the screw and an electrical control system attached to the platform allows a person standing on the platform to be raised or lowered by the rotation of the screw.

REFERENCES:
patent: 2884225 (1959-04-01), Ford
patent: 3392959 (1968-07-01), Lewis
patent: 3981484 (1976-09-01), James
patent: 4026387 (1977-05-01), Abreu
patent: 4133437 (1979-01-01), Gates
patent: 4145066 (1979-03-01), Shearin

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