Security system
OwnerGeorge Andrew Ellsoninventor
Life of this patent
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Abstract
A system for automatic detection of the presence of intrusion by an intruder and/or the phenomenon of combustion manifested in light, flame, and heat, and having delay before activating alarm means for preventing non-genuine detection is provided using digital, solid-state circuitry modules thereby facilitating installation, maintenance, and expansion of the system. An electronic combination lock coupled to the system controls the system to enable the detection of intrusion to be amended by the proprietor of an enclosure protected by the system. Separate alarm means having unique alarm sounds for intrusion and the phenomenon as well as optional telephone dialing of appropriate responding agencies is provided.
Claims14
A system for the automatic detection of the presence of intrusion or fire within a security area, comprising:
- means for sensing a fire alarm condition and including means for generating a first distinguishable signal in response to said fire alarm condition;
- means for sensing an intrusion alarm condition and including means for generating a second distinguishable signal in response to said intrusion alarm condition, said means for generating including:
- verification means operatively coupled to said means for sensing an intrusion alarm condition for verifying the intrusion;
- first alarm means responsive to the verification of the intrusion for providing a pre-alarm signal;
- second alarm means operably associated with said first alarm means for providing said second distinguishable signal, said second alarm means including means for selectively delaying the generation of said second distinguishable signal a selected period of time after said pre-alarm signal;
- and
- means responsive to said first and said second distinguishable signals for automatically signaling the presense of fire or intrusion.
Dependencies are inferred from the claim text.