Portable smoke alarm

Details Portable smoke alarm Portable smoke alarm

1982-08-23

1985-06-25

Rowland, James L.

Communications: electrical

Condition responsive indicating system

Specific condition

116307, 200308, 248214, 340546, G08B 1710

Patent

active

045257035

ABSTRACT:
A portable alarm is provided with a smoke detecting mechanism and circuit connected to an audible signal activated on the presence of smoke and all contained in a compact housing. To this conventional combination the invention interposes a connector means in the circuit between the detector and alarm which connector means includes a highly visible elongated external hanging electrical lead that is plugged into an opening in the housing to complete the circuit through the electrical lead thus, at all times, conspicuously indicating the armed/unarmed condition of the alarm.

REFERENCES:
patent: 324591 (1885-08-01), Price et al.
patent: 1968546 (1934-07-01), Van Dyck
patent: 2146577 (1939-02-01), Hermann
patent: 2424966 (1947-08-01), Buchanan et al.
patent: 2855257 (1958-10-01), Barker et al.
patent: 2908899 (1959-10-01), Crafts
patent: 3430220 (1969-02-01), Deuth
patent: 3710365 (1973-01-01), Barnes
patent: 4258359 (1981-03-01), McLamb

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