Alarm light

Details Alarm light Alarm light

1979-04-27

1981-01-27

Caldwell, Sr., John W.

Communications: electrical

Systems

Portable self-contained

116 70, 222 39, 340326, 340388, 340404, 362 96, G08B 2300, G08B 700, F21V 3300

Patent

active

042478448

ABSTRACT:
An alarm light includes a lamp, an alarm, and an actuator moveable for actuating the lamp and alarm. The alarm is powered by pressurized gas for vibrating a chamber-sealing disk to emit a shrieking sound. The actuator is located adjacent to the tank and the bulb and includes a passage leading from the outlet to a disk located in the actuator. The outlet is in communication with the passage and gas is capable of flowing through the outlet, the passage, and an entrance to the chamber containing the disk when the valve is open. The disk is caused to vibrate thereby and emit a piercing sound.

REFERENCES:
patent: 2778330 (1957-01-01), Jacoby
patent: 2855497 (1958-10-01), Bacon
patent: 2884892 (1959-05-01), Swanson
patent: 3638836 (1972-02-01), Vickers
patent: 3716170 (1973-02-01), Mangels
patent: 3776429 (1973-12-01), De Lucia

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