Audible alarm for a synchronous motor

Details Audible alarm for a synchronous motor Audible alarm for a synchronous motor

1974-07-22

1976-06-01

Caldwell, John W.

Communications: electrical

Audible indication

Pneumatic-type sound producer

340392, 335261, 310 15, G01K 108, H01F 708

Patent

active

039613275

ABSTRACT:
A buzzer arm is attached to a synchronous motor to provide an audible alarm in response to energization of a winding of the motor and the relative position of the buzzer arm to a buzzer anvil extending from the motor.

REFERENCES:
patent: 3223861 (1965-12-01), Steiner
patent: 3262110 (1966-07-01), Gardes
patent: 3350589 (1967-10-01), Suarnias
patent: 3601973 (1971-08-01), Bassett et al.
patent: 3694591 (1972-09-01), Bassett et al.

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