Hydraulic elevator power assembly

Details Hydraulic elevator power assembly Hydraulic elevator power assembly

1977-09-30

1979-04-17

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Ram driven by fluid pumped from reservoir

60DIG2, 60DIG10, 60469, 187 28, F15B 106, F15B 1518

Patent

active

041493826

ABSTRACT:
A power assembly for supplying power to a hydraulic piston and cylinder unit for raising and lowering an elevator car. The power assembly may comprise: a hydraulic fluid reservoir; a hydraulic pump assembly, the intake of which is connected to the reservoir and the outlet of which is connected to the piston and cylinder unit; and a control valve disposed above the hydraulic reservoir for controlling the flow of fluid to and from the piston and cylinder unit.

REFERENCES:
patent: 1165653 (1915-12-01), Dunn
patent: 3530958 (1970-09-01), Brannon et al.
patent: 3708977 (1973-01-01), Raymond
patent: 3723027 (1973-03-01), Montelius
patent: 3993094 (1976-11-01), Spooner

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