Lift device

Details Lift device Lift device

1980-04-03

1982-06-22

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

744248R, 187 25, B66B 906

Patent

active

043358055

ABSTRACT:
A lift device comprising a driving device, a displaceable load-receiving device in the form of a platform or seat driven by the driving device, guide device for guiding the load-receiving device up or down a flight of steps, the load-receiving device being journalled for displacement and a drive spindle for effecting the displacement, the drive spindle being provided on the load-receiving device so as to be displaceable therewith, support rails secured alongside the flight of steps for guiding the spindle, the spindle having a thread and the support rails including a guide device having a thread co-operating with the spindle thread, the co-operation of the threads determining the path of travel of the load-receiving device.

REFERENCES:
patent: 1473813 (1923-11-01), Crispen
patent: 1838204 (1931-12-01), Wood
patent: 2270735 (1942-01-01), Knudsen
patent: 2824623 (1958-02-01), Nord et al.
patent: 2950948 (1960-08-01), Hardigan et al.
patent: 4174023 (1979-11-01), Dooley

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