Flow sensing and control apparatus

Details Flow sensing and control apparatus Flow sensing and control apparatus

1975-06-06

1976-04-27

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Apparatus having means responsive to or ameliorating the...

60405, 60429, 60430, 60486, 180141, F15B 1309

Patent

active

039525104

ABSTRACT:
Flow sensing and control apparatus is provided to selectively combine the fluid output of an auxiliary pump with a hydraulic system. The apparatus includes a valve body having a primary pump passage therein through which fluid from one of a pair of primary pumps is conducted to its respective inlet of a control valve, an auxiliary pump passage interconnected between the auxiliary pump and the primary pump passage and a fluid receiving passage which is connected to the auxiliary pump passage. A pilot operated valve is disposed within the fluid receiving passage and operative in response to fluid flow through the primary pump passage for selectively controlling fluid to the fluid receiving passage so as to permit the combining of any available fluid from the auxiliary pump with that of the primary pump up to a predetermined minimum flow rate through the primary pump passage and for diverting any excess fluid from the auxiliary pump to the receiving passage above that necessary to maintain the minimum flow rate.

REFERENCES:
patent: 2614644 (1952-10-01), Gustafson
patent: 2846848 (1958-08-01), Coker
patent: 3154921 (1964-11-01), Junck et al.
patent: 3547559 (1970-12-01), Tittmann
patent: 3613818 (1971-10-01), Schubert
patent: 3631937 (1972-01-01), Joyce
patent: 3730288 (1973-05-01), Dean
patent: 3747725 (1973-07-01), Feustel et al.

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