Oil well pump start-up alarm

Details Oil well pump start-up alarm Oil well pump start-up alarm

1991-03-04

1993-02-23

Ng, Jin F.

Communications: electrical

Systems

Timer control

340679, 361 29, G08B 100

Patent

active

051893886

ABSTRACT:
A visual and audible alarm are connected to a control circuit for an oil well pumping unit. The control circuit includes a time clock which controls the intermittent ON-OFF cycle of operation of the pumping unit in the automatic mode, the OFF portion of the cycle allowing the well to recover pressure. The audible and visual alarm operates through a time delay relay connected to the time clock to provide a warning to people in the vicinity of the pump of the imminent start-up of the pump before allowing the pump to start, thereby providing people in the area the opportunity to avoid injury by evacuating the area.

REFERENCES:
patent: 1709517 (1929-04-01), Billingsley
patent: 1790681 (1931-02-01), Smith
patent: 2864049 (1958-12-01), Sheets
patent: 3191114 (1965-06-01), Reed
patent: 3334272 (1967-08-01), Lipnitz
patent: 3631447 (1971-12-01), Sulat et al.
patent: 4110742 (1978-08-01), Hawkins
patent: 4266221 (1981-05-01), Hawkins
patent: 4297678 (1981-10-01), Lee
patent: 4821024 (1989-04-01), Bayha

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