Control apparatus for a plurality of simultaneously actuatable f

Details Control apparatus for a plurality of simultaneously actuatable f Control apparatus for a plurality of simultaneously actuatable f

1978-03-27

1979-08-28

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

60486, 91461, 91532, 414699, F15B 1306, F15B 1309

Patent

active

041656130

ABSTRACT:
A control apparatus is disclosed for permitting simultaneous actuation of a plurality of fluid motors whose combined flow capacity exceeds the available flow rate. The plurality of fluid motors are actuated by a corresponding plurality of open center, pressure-compensated, pneumatically actuated control valves which are connected in series flow arrangement with a fluid supply having a fixed minimum flow output and a maximum flow rate output. A device is provided to sense the rate of flow for hydraulic fluid exhausting from the series of control valves. The rate of flow sensing device controls a pneumatic pressure regulator that provides a corresponding pressure change in the pneumatic supply pressure provided to a plurality of control valves.

REFERENCES:
patent: 3606049 (1971-09-01), Gordon
patent: 3863448 (1975-02-01), Purdy
patent: 3987622 (1976-10-01), Johnson

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