Alarm buzzer device

Details Alarm buzzer device Alarm buzzer device

1974-09-09

1976-01-13

Caldwell, John W.

Communications: electrical

Audible indication

Ultrasonic pest control

340402, 200333, 200293, 200 6144, 174 52R, G08B 300

Patent

active

039328686

ABSTRACT:
An alarm buzzer device for a bicycle, emergency call or the like, incorporates an electric power source, for instance, a dry cell therein. The device comprises a housing accomodating various elements, such as a buzzer element, stationary and movable contacts, and a lid for covering an open end of the housing and arranged floatingly relative to the housing by the movable contact, so that the device can be actuated by pressing any portion of the upper surface of the lid.

REFERENCES:
patent: 685614 (1901-10-01), Keil
patent: 3036183 (1962-05-01), Felten

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