Pumps – Condition responsive control of pump drive motor – By controlling drive motor motive fluid
Patent
1987-11-23
1989-05-30
Smith, Leonard E.
Pumps
Condition responsive control of pump drive motor
By controlling drive motor motive fluid
417404, F04B 912
Patent
active
048346187
ABSTRACT:
An oil cable pumping plant including at least one oil tank and at least one air/gas driven piston type oil pump connected to the oil tank, at least one air/gas source connected to the air/gas inlet of the pump via a pressure control. An exit for the air/gas as well as an oil exit are connected to at least one oil filled cable, and an oil flow indicator. The pump in its normal operating condition provides a predetermined oil pressure at its outlet. An oil flow control is interconnected between the oil flow indicator and the air/gas pressure control for controlling the oil.
REFERENCES:
patent: 54247 (1866-04-01), Dennisson
patent: 411263 (1889-09-01), Sherman
patent: 742471 (1903-10-01), Morrice et al.
patent: 4070107 (1978-03-01), Ferrentino
patent: 4419056 (1983-12-01), Ege
patent: 4544328 (1985-10-01), Credle, Jr.
patent: 4666374 (1987-05-01), Nelson
Aasbo Anders T.
Ege Sigmund
Heigh Freddy
Smith Leonard E.
Standard Telefon og Kabelfabrik A/S
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