Excess temperature and starting safety device in pumps having pe

Details Excess temperature and starting safety device in pumps having pe Excess temperature and starting safety device in pumps having pe

1994-02-08

1996-01-16

Gluck, Richard E.

Pumps

Condition responsive control of pump drive motor

Responsive to pump or pump fluid temperature

417 63, 417420, H02H 504, H02H 1100

Patent

active

054842654

ABSTRACT:
An excess temperature and starting safety device for a magnetic centrifugal pump, having a rotor which delivers the medium and whose shaft terminates at a gap dish, where it bears permanent magnets driven by oppositely disposed permanent magnets which are connected to the shaft of the driving motor, while attached to the inner or outer surface of the gap dish is a conductor, more particularly a piece of wire of a thermocouple whose other conductor, closing the conductor circuit, is formed by the gap dish.

REFERENCES:
patent: 2940395 (1966-06-01), Hill
patent: 4838763 (1989-06-01), Kramer et al.
patent: 4854823 (1989-08-01), Hatting
patent: 5066200 (1991-11-01), Ooka
patent: 5297940 (1994-03-01), Buse
patent: 5302091 (1994-04-01), Horiuchi
patent: 5334004 (1994-08-01), Lefevre et al.

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