Electrohydraulic press drive system

Details Electrohydraulic press drive system Electrohydraulic press drive system

1975-11-17

1977-05-31

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

With control means for structure storing work driving energy

60414, 60419, F15B 102

Patent

active

040261077

ABSTRACT:
An electrohydraulic press drive system comprising a pressure transformer h variable ratio of displacement volume connected in series in a drive hydraulic circuit between a gas-hydraulic accumulator and a press cylinder. The pressure transformer consists of a hydraulic motor, which is connected mechanically with a hydraulic pump, the source of drive power of the pressure transformer being the gas-hydraulic accumulator.

REFERENCES:
patent: 2554381 (1951-05-01), Patterson
patent: 2576359 (1951-11-01), Putnam
patent: 2827763 (1958-03-01), Govan et al.
patent: 2984985 (1961-05-01), MacMillin
patent: 3779017 (1973-12-01), Fujisawa et al.
patent: 3871714 (1975-03-01), Behrend
patent: 3874173 (1975-04-01), Wilkins
patent: 3903696 (1975-09-01), Carman

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