Communications: electrical – Condition responsive indicating system – With particular system function
Patent
1996-03-15
1998-08-04
Hofsass, Jeffery
Communications: electrical
Condition responsive indicating system
With particular system function
340514, 340517, 340521, 340541, 340565, 340693, 34028602, 340331, 340332, 340333, 379 33, 379 39, 379 44, 362800, 362812, 345905, G08B 2900
Patent
active
057900191
ABSTRACT:
This invention provides a new and improved emergency alarm system comprising a central control unit which is directly or indirectly connected to every other component of the emergency alarm system. The central control unit triggers and stops a visual alarm generator and an audio alarm generator, either simultaneously or separately, upon receiving signals from other components of the emergency alarm system. A portable control element and a signal-generating detection means are used for starting and stopping the central control unit, which in turn triggers a power supply means to cause a change, through the visual alarm generator, in color of a visible outdoor board and to commence, through the audio alarm generator, an alarm. A hidden sensing circuit can serve as the signal-generating detection means. The present invention also presents a method of application of said emergency alarm system.
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patent: 4993058 (1991-02-01), McMinn et al.
patent: 5065136 (1991-11-01), Frolov et al.
patent: 5521578 (1996-05-01), DelValle
Bani-Jamali Maryam
Hofsass Jeffery
Pope Daryl C.
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