Automatic pressure control system

Details Automatic pressure control system Automatic pressure control system

1975-04-11

1976-03-02

Freeh, William L.

Pumps

Condition responsive control of pump drive motor

By controlling drive motor motive fluid

417206, 417403, 60428, F04B 4900, F04B 2312

Patent

active

039415082

ABSTRACT:
This gas pressure control system is intended primarily for testing gauges by providing an accurate static gas pressure over a wide range, preferably from zero to 10,000 pounds per square inch. The system is equipped with a pressure intensifier that operates automatically to raise the delivery pressure above the supply pressure when necessary. The supply may be a bottle of nitrogen under pressure of two thousand two hundred pounds per square inch, and the pressure intensifier is preferably a cylinder-and-piston motor-pump combination with a displacement ratio such as 70 to 1.

REFERENCES:
patent: 660239 (1900-10-01), Aneshaensel
patent: 1015464 (1912-01-01), Wilkins
patent: 2881749 (1959-04-01), Pringham

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