Stabilized hydraulic elevator

Details Stabilized hydraulic elevator Stabilized hydraulic elevator

1977-08-16

1979-05-22

Reeves, Robert B.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

B66B 1104

Patent

active

041554256

ABSTRACT:
A hydraulically operable elevator having a vertically reciprocable cab suspended from an overhead structure by differential hydraulic piston systems which are responsive to introduction of hydraulic fluid to decrease the overall length of the differential pistons causing the cab to ascend, and which are responsive to withdrawal of hydraulic fluid from the piston assemblies to increase the overall length of the differential pistons, allowing the cab to descend. Only one differential piston assembly is required on each side of the transverse axis of the cab to increase its stability and to provide maximum cross-sectional area for the interior of the cab.

REFERENCES:
patent: 186455 (1877-01-01), Bragaldi
patent: 438913 (1890-10-01), Deblieux
patent: 3399887 (1968-09-01), Altier
patent: 3650356 (1972-03-01), Brown
patent: 4062269 (1977-12-01), Chichester et al.

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