Hydraulic apparatus for the operation of an elevator

Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support

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Details

74501R, 92137, B66B 1104

Patent

active

043175058

ABSTRACT:
A hydraulic apparatus for the operation of an elevator comprises a linearly extending hydraulic cylinder and a piston slidable therein. The piston has on its downstream side a plurality of pivotally interconnected thrust members the last one of which has a slide member which is provided with a support arm with which the slide member passes through a longitudinal slot in the jacket of a linear cylinder extending in a direction parallel to the path of motion of a load receiving device and to which the load receiving device is attached. The linearly extending hydraulic cylinder and the linear cylinder are open at the lower ends and the thrust members depend downwardly at the two cylinders. The thrust members have a continuous toothing and a gear supported rotatably between the two cylinders passes through longitudinal slots in the jackets of the two cylinders and engages with the toothing.

REFERENCES:
patent: 2384742 (1945-09-01), Hewitt
patent: 2943514 (1960-07-01), Golde
patent: 2986954 (1961-06-01), Werner
patent: 3204480 (1965-09-01), Bradbury
patent: 3965802 (1976-06-01), Jacobs

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