Liquid level reservoir control

Details Liquid level reservoir control Liquid level reservoir control

1974-12-27

1976-05-04

Freeh, William L.

Pumps

Condition responsive control of pump drive motor

Responsive to accumulation of pumped liquid in receiver

137413, 222146HE, F04B 4900

Patent

active

039543510

ABSTRACT:
A device for sensing and controlling liquid level in a reservoir container. The device includes a sensing element in the form of a displacer which enters the liquid through the surface and displaces a predetermined volume. The displacer is located in a surge tank into which the liquid is initially fed and from which it is supplied to the reservoir. The displacer is mounted on an arm of a lever, the displacer being counterbalanced to respond to a liquid level in the surge tank. The lever carries a switch actuating mechanism which is moved in response to a change in the liquid level in the surge tank and which controls actuation of a single acting piston pump air motor to supply liquid to the surge tank.

REFERENCES:
patent: 2570694 (1951-10-01), Langenbahn
patent: 2698710 (1955-01-01), Pedroia
patent: 3364861 (1968-01-01), Nilsson
patent: 3601146 (1971-08-01), Reighard
patent: 3758003 (1973-09-01), Kautz

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