Automatic actuator for variable speed pump

Details Automatic actuator for variable speed pump Automatic actuator for variable speed pump

1980-03-04

1982-05-18

Croyle, Carlton R.

Pumps

Condition responsive control of pump drive motor

Single motor control element responsive to means sensing...

417 34, 417 45, F04B 4900

Patent

active

043302386

ABSTRACT:
An automatic speed-control actuator for variable speed pumps. A rotary or near actuator changes the pump speed to prevent unacceptably low pressures on the pump inlet or unacceptably high pressures on the pump outlet; pressure switches at these locations control the actuator to produce maximum flow rates through the pump.

REFERENCES:
patent: 1633786 (1927-06-01), Horter
patent: 2224295 (1940-12-01), Hofer
patent: 2439239 (1948-04-01), Crever
patent: 2440981 (1948-05-01), Smith
patent: 2634681 (1953-04-01), Rowell
patent: 2651995 (1953-09-01), Blackburn
patent: 2989000 (1961-06-01), Alcaro
patent: 3072058 (1963-01-01), Christopher et al.
patent: 4139332 (1979-02-01), Cantrell et al.

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