Emergency alert system for a protected region employing RF and n

Details Emergency alert system for a protected region employing RF and n Emergency alert system for a protected region employing RF and n

1995-03-08

1997-08-26

Horabik, Michael

Communications: electrical

Continuously variable indicating

With meter reading

340531, 340539, 34082536, 34082549, G08B 108

Patent

active

056614713

ABSTRACT:
A signaling network system including a plurality of receivers distributed in a protected region comprising multiple protected enclosures and including RF receivers as well as a plurality of non-RF receivers, located within said multiple protected enclosures, for receiving non-RF signals emanating from within the enclosure within which the receiver is located, said non-RF signals generally not capable of being received by a receiver located outside the enclosure from which they are transmitted and at least one portable emergency indicating signal transmitter which is selectably locatable in an enclosure and which is operative to transmit, when actuated, both RF and non-RF signals.

REFERENCES:
patent: 4225953 (1980-09-01), Simon et al.
patent: 4275385 (1981-06-01), White
patent: 4347501 (1982-08-01), Akerberg
patent: 4611198 (1986-09-01), Levinson et al.
patent: 4630035 (1986-12-01), Stahl et al.
patent: 4837568 (1989-06-01), Snaper
patent: 4904993 (1990-02-01), Sato
patent: 5153584 (1992-10-01), Engira
patent: 5257007 (1993-10-01), Steil et al.
patent: 5365217 (1994-11-01), Toner
patent: 5467074 (1995-11-01), Pedtke
patent: 5528232 (1996-06-01), Verma et al.
Newspaper article, "Nurses Protected". (Aug. 3, 1995).
Pamphlet of Static System Group (Apr. 1994).

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