Sleeper's smoke-alarm clock

Details Sleeper's smoke-alarm clock Sleeper's smoke-alarm clock

1978-02-09

1980-01-29

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

58152B, 250573, 340630, G04B 4700, G08B 1710

Patent

active

041863895

ABSTRACT:
An alarm device functioning both as a time alarm and a smoke and fire alarm, which includes an electric clock with an alarm-setting device, an electrically-activated alarm, cooperating contacts on the clock and alarm, a switch coupling the contacts to the alarm to permit switching the time alarm on and off, an electronic smoke detector and an amplifier to amplify the output of the smoke detector as a second input to the alarm.

REFERENCES:
patent: 1521600 (1925-01-01), Crowe
patent: 3555532 (1971-01-01), White et al.
patent: 3824789 (1974-07-01), Muller et al.
patent: 3846773 (1974-11-01), Lintelmann et al.

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