Control system for hydraulic presses comprising a plurality of p

Details Control system for hydraulic presses comprising a plurality of p Control system for hydraulic presses comprising a plurality of p

1975-03-24

1976-03-23

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Cyclically operable reciprocating or oscillating motor or...

60484, 60416, 91170R, 91304, 91411R, F15B 300, F15B 1116

Patent

active

039452069

ABSTRACT:
A control system for hydraulic presses comprising a plurality of press rams, an intensifier having a primary chamber which is connected by a supply conduit to a pump, and a valve which is associated with the primary chamber and when open permits the liquid under pressure to return through a return conduit into a reservoir, the primary chamber being constantly supplied by the pump with high-pressure liquid at a constant rate, and the valve associated with the primary chamber being controlled to move in synchronism with the reciprocating motion of the press rams so that it is closed during the forward stroke and open during the return stroke of the press rams.

REFERENCES:
patent: 1953454 (1934-04-01), Wollaeger
patent: 2329709 (1943-09-01), Fischer
patent: 2803110 (1957-08-01), Chittenden

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