Submersible thrust limit switch

Details Submersible thrust limit switch Submersible thrust limit switch

1976-04-12

1977-11-08

Freeh, William L.

Pumps

Condition responsive control of pump drive motor

By control of electric or magnetic drive motor

308 1A, 417 13, 417 63, F04B 4906

Patent

active

040573656

ABSTRACT:
A submersible thrust limit switch is mounted between the motor and the pump, thus detecting any predetermined drop in the shaft. Means is provided to shut down the motor and signal upon the opening of the contacts in the switch.

REFERENCES:
patent: 2209466 (1940-07-01), Miller
patent: 2577559 (1951-12-01), Armstrong et al.
patent: 3220244 (1965-11-01), Donnelly
patent: 3853087 (1974-12-01), Aldag

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