Pump control system, level sensor switch and switch housing

Details Pump control system, level sensor switch and switch housing Pump control system, level sensor switch and switch housing

1989-02-07

1990-07-24

Croyle, Carlton R.

Pumps

Condition responsive control of pump drive motor

Having timer or delay means

417 40, 417 44, 200 84C, F04B 4900

Patent

active

049432109

ABSTRACT:
A control system for a pump includes a level sensor switch that is positioned along a production string in an oil well shaft. The level sensor switch is protected from damage by inner and outer housings. A control circuit responsive to the level sensor switch is also provided. The control circuit includes an adjustable timer that is located at ground level remote from the harsh environment of the oil well shaft. The timer controls the operation time of the pump during each pumping cycle.

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patent: 4081639 (1978-03-01), Tice
patent: 4318674 (1982-03-01), Godbey et al.
patent: 4441860 (1984-04-01), Tsujimoto

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