Earthquake alarm system

Details Earthquake alarm system Earthquake alarm system

2005-03-21

2008-12-09

Mullen, Thomas J (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S539260, C340S691300, C340S691400

Reexamination Certificate

active

07463162

ABSTRACT:
An earthquake alarm system (10) that produces an earthquake alert signal (17) that gives a person a few seconds to take cover or to assist others before the earthquake arrives. The system (10) consists of a plurality of earthquake detecting device (12) that when activated by an earthquake, produce a seismic event signal (11). The seismic event signal (11) is applied sequentially to a microcontroller (26), an auto dialer (30), a telephone line receptacle (34), a telephone company (36) and an R.F. transmitter (38) that produces an R.F. signal (23) that is applied via an R.F. antenna (40) into free space. The R.F. signal (23) is applied to and activates a plurality of remotely-located pagers (44). The pagers (44) include a visual and/or an audio alarm that indicates to a person that an earthquake is imminent.

REFERENCES:
patent: 4300135 (1981-11-01), Korn et al.
patent: 4628299 (1986-12-01), Tate et al.
patent: 5625348 (1997-04-01), Farnsworth et al.
patent: 5910763 (1999-06-01), Flanagan
patent: 6392538 (2002-05-01), Shere
patent: 6704659 (2004-03-01), Lee et al.
patent: 7005993 (2006-02-01), Webb et al.

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