Power recovery system and method for elevator apparatus

Details Power recovery system and method for elevator apparatus Power recovery system and method for elevator apparatus

1983-07-22

1984-12-25

Truhe, J. V.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

290 54, F03B 1300

Patent

active

044898126

ABSTRACT:
Disclosed is a system and method for recovering energy from elevator apparatus and utilizing the recovered energy for useful purposes. This is accomplished by selectively coupling a hydraulic pump to the elevator drive when surplus energy is available thereby to pump and store pressurized fluid in accumulator devices. Such fluid, when above a predetermined pressure, is utilized to deactivate electrically driven units and drive the same by hydraulic motors supplied with fluid from the accumulator devices. Additional energy is recovered from heat present in the hydraulic fluid downstream from the hydraulic pump and utilized beneficially.

REFERENCES:
patent: 1298032 (1919-03-01), Furlow
patent: 2669098 (1954-02-01), Buell
patent: 3675112 (1972-07-01), Smith
patent: 3952723 (1976-04-01), Browning
patent: 4305003 (1981-12-01), Basurto et al.
patent: 4351415 (1982-09-01), Kita

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