Oil well control circuit

Details Oil well control circuit Oil well control circuit

1980-03-17

1982-02-23

Croyle, Carlton R.

Pumps

Condition responsive control of pump drive motor

Having timer or delay means

F04B 4900

Patent

active

043167020

ABSTRACT:
An improved oil well pump timer including means for detecting periods of power outage and providing a pumping period following the outage of sufficient length to maintain an essentially constant duty cycle. Clock controlled timers determine preselected on and off cycle periods. Power failure detecting circuitry inhibits on timer operation and counts the number of off time cycles occurring during the outage. Upon reestablishment of power, control circuitry inhibits the off timer and provides a number of on time cycles equal to the number of off cycles during the outage.

REFERENCES:
patent: 2596330 (1952-05-01), Everard
patent: 2707440 (1955-05-01), Long et al.
patent: 3936231 (1976-02-01), Douglas
patent: 3953777 (1976-04-01), McKeo

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