Apparatus for controlling liquid level in a reservoir

Details Apparatus for controlling liquid level in a reservoir Apparatus for controlling liquid level in a reservoir

1976-09-17

1980-06-10

Croyle, Carlton R.

Pumps

Condition responsive control of pump drive motor

Plural pumps having separate drive motors, supply sources,...

417 12, 417 38, 200183, F04B 4106

Patent

active

042070309

ABSTRACT:
A balance beam adjustable for a desired liquid level in a reservoir is under the control of a device responsive to pressure head in a main leading from, and reflecting the liquid level in, the reservoir, the beam being in charge of a pump control for one or more pumps for activating the pumps when required when the liquid level drops in the reservoir, whereby to substantially maintain the liquid level. A timer-operated anti-stagnation or anti-icing control device is provided in association with the beam.

REFERENCES:
patent: 1667056 (1928-04-01), Smith
patent: 2240607 (1941-05-01), Buck
patent: 2377185 (1945-05-01), Russel
patent: 2430775 (1947-11-01), Marchese
patent: 2707440 (1955-05-01), Long et al.
patent: 2775205 (1956-12-01), Gunther
patent: 2780234 (1957-02-01), Russell
patent: 3223041 (1965-12-01), Quinn
patent: 3309474 (1967-03-01), Heinrich
patent: 3413429 (1968-11-01), Yost
patent: 3744932 (1973-07-01), Prevett

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