Audio and visual alarm device

Details Audio and visual alarm device Audio and visual alarm device

1986-03-03

1988-05-03

Orsino, Joseph A.

Communications: electrical

Systems

Plural

34081522, G08B 700

Patent

active

047423285

ABSTRACT:
An alarm device capable of producing an audible as well as a visual alarm is disclosed. The alarm device comprises a gong, a DC motor of a commutator type and a hammer operatively connected to an output shaft of the motor for striking the gong. The alarm device further comprises a high-voltage generating circuit connected to the motor, a flash tube and an exciter circuit for the tube. When a DC power is supplied to the motor to strike the gong by the hammer, the high-voltage circuit generates a high voltage in accordance with a square-wave current which flows through the motor. The exciter circuit is energized by the high voltage and excites the flash tube to thereby produce flashes of light.

REFERENCES:
patent: 1032102 (1912-07-01), Anderson
patent: 1038206 (1912-09-01), Salisbury
patent: 1474936 (1923-11-01), Lawrence
patent: 1596216 (1926-08-01), Pangburn
patent: 2109184 (1938-02-01), Sereda
patent: 3016478 (1962-01-01), Kadell
patent: 3781877 (1973-12-01), Berns
patent: 4101880 (1978-07-01), Haus
patent: 4241332 (1980-12-01), Farque
patent: 4274084 (1981-06-01), Haus

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