Pump device

Details Pump device Pump device

1976-10-22

1978-10-03

Freeh, William L.

Pumps

Condition responsive control of drive transmission or pump...

Disconnectable drive element

192 91A, F16D 2511, F16D 2500, F04B 4900

Patent

active

041181514

ABSTRACT:
A pump device comprises a pump for pumping a liquid from a liquid source, a rotational driving power source operable continuously, transmission means for transmitting rotational driving power from the power source to the pump, detecting means for detecting the pressure of the liquid pumped and delivered by the pump, and clutch means provided in the power transmission path of the transmission means. The liquid pressure detecting means is adapted to operate accordingly when said liquid pressure fluctuates from a predetermined set pressure to controllably vary the rate of power transmission of said clutch means, while causing the operation of said rotational driving power source to continue uninterruptedly, thereby to control the pump delivery pressure at a constant value.

REFERENCES:
patent: 1270794 (1918-07-01), Dawson et al.
patent: 2296385 (1942-09-01), Haynes
patent: 2650677 (1953-01-01), Klein
patent: 2684742 (1954-07-01), Eason
patent: 3502029 (1970-03-01), Halloday
patent: 4009971 (1977-03-01), Krohn

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