Communications: electrical – Condition responsive indicating system – With particular system function
Reexamination Certificate
2011-03-15
2011-03-15
Pope, Daryl (Department: 2612)
Communications: electrical
Condition responsive indicating system
With particular system function
C340S506000, C340S003100, C340S870030, C340S870030
Reexamination Certificate
active
07907049
ABSTRACT:
An improved life safety system provides ability to detect a catastrophic failure within a network node of the life safety system, and to subsequently pass a failsafe alarm signal through a network node, and through the life safety system, despite the catastrophic failure, which may be a failed main processor of a main panel, a failed main processor of a loop expander module, a failed main processor of an amplifier, or a failed main processor of a liquid crystal display controller.
REFERENCES:
patent: 3656158 (1972-04-01), Goodwater
patent: 5400246 (1995-03-01), Wilson et al.
patent: 6145102 (2000-11-01), Klein et al.
patent: 2006/0107098 (2006-05-01), Maki et al.
patent: 2006/0112318 (2006-05-01), Yoda
European Search Report for EP08171423; dated Jul. 20, 2010; 7 pages.
Armstrong Teasdale LLP
Pope Daryl
UTC Fire & Security Americas Corporation, Inc.
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