Well pump control

Details Well pump control Well pump control

1984-03-08

1988-06-07

Ro, Bentso

Electricity: motive power systems

Automatic and/or with time-delay means

Level of fluid or granular material

318484, 417 12, 417 44, F04B 4906

Patent

active

047499257

ABSTRACT:
A device to control an electric well pump motor to pump continuously so long as there is liquid available to be pumped from the well. Whenever there is insufficient liquid to be pumped, the device causes shut-off of the electric pump motor. When liquid again becomes sufficiently available, the device causes pumping operations to resume. Liquid availability conditions are examined by the device at periodic intervals. The device comprises an adjustable variable-area-orifice restricted section in a liquid passage conduit, a pressure switch, a timer, an electric motor, and a motor control switch.

REFERENCES:
patent: 2456456 (1948-12-01), Smith
patent: 2707440 (1955-03-01), Long et al.
patent: 2895024 (1959-07-01), Brown et al.
patent: 2981195 (1961-04-01), Payne et al.
patent: 3789338 (1974-01-01), Szeverenyi et al.
patent: 3963374 (1976-06-01), Sullivan
patent: 3963375 (1976-06-01), Curtis
patent: 4180374 (1979-12-01), Bristow
patent: 4329120 (1982-05-01), Walters
patent: 4443671 (1984-04-01), Hinds

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