US4057798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Security system
Assignee: Individual
•
Filing: 1976-03-03
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Granted: 1977-11-08
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Expires: 1996-03-03
Abstract
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.
Inventors
- 👤 George Andrew Ellson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:57
CPC Classifications
G; G08; G08B; G08B19/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
162 words
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.
Claim 2
Independent Claim
162 words
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.
Claim 3
Dependent Claim
84 words
The system according to claim 1, further comprising: primary power source means for providing a potential source to energize the system; secondary power source means for providing a standby potential source to energize the system, said secondary power source energizing the system only when the potential of the primary source means is below the potential of said secondary power source means; and logic means disposed between both said source means for sensing the potentials thereof and coupling the highest potential to energize the system.
Claim 4
Dependent Claim
62 words
The system according to claim 2, further comprising: means coupled to said primary source means for signaling a warning to indicate when said primary source means is below a minimum potential to energize the system; and means coupled to said secondary means for signaling a warning to indicate when said secondary source means is below a minimum potential to energize the system.
Claim 5
Dependent Claim
35 words
The system according to claim 1 further comprising control means operable associated with both said means for sensing a fire alarm condition and said means for sensing an intrusion alarm condition for controlling the system.
Claim 6
Dependent Claim
17 words
The system according to claim 4 wherein said control means defines a key operated lock switch means.
Claim 7
Dependent Claim
19 words
The system according to claim 4 wherein said control means defines a keyboard operated electronically programmed combination lock means.
Claim 8
Dependent Claim
51 words
The system according to claim 1 wherein said means for sensing an intrusion alarm condition further comprises means to detect the tampering of said means for sensing an intrusion alarm condition coupled directly to said first and said second alarm means for cuasing said second distinguishable signal to be generated immediately.
Claim 9
Dependent Claim
40 words
The system according to claim 1 wherein said means for sensing an intrusion alarm condition further comprises a panic means coupled directly to said first and said second alarm means for causing said second distinguishable signal to be generated immediately.
Claim 10
Dependent Claim
34 words
The system according to claim 8 wherein said panic means includes activated circuit means requiring a plurality of sequential activations before activating said first and second alarm means for providing said second distinguishable signal.
Claim 11
Dependent Claim
67 words
The system according to claim 1 wherein said means responsive to said first and second distinguishable signals, further comprises: a tone generator; means for gating said tone generator in accordance with said first and second distinguishable signals to provide a first tone signal and a second tone signal; and means responsive to said first and second tone signals to distinguishably signal the violation within the security area.
Claim 12
Dependent Claim
56 words
The system in accordance with claim 10 wherein said means responsive to said first and second tone signals further comprises: amplifier means for amplifying said first and second tone signals; and audio speaker means responsive to the amplified first and second tone signals for providing audio indications thereof to signal the violation within the security area.
Claim 13
Dependent Claim
24 words
The system in accordance with claim 11 wherein said amplifier means is inhibited except when said first or said second distinguishable signals are present.
Claim 14
Dependent Claim
32 words
The system according to claim 1 wherein said means responsive to said first and second distinguishable signals further includes means for signaling the violation within the security area to appropriate responding agencies.
Claim 15
Dependent Claim
35 words
The system according to claim 13 wherein said means for signaling the violation within the security area to appropriate responding agencies defines a telephone dialing apparatus for dialing law enforcement agencies or fire prevention agencies.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-07 | 1981-05-09 | 1981-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-07 | 1985-05-09 | 1985-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-07 | 1989-05-09 | 1989-11-08 | $7700.00 | Window Closed / Lapsed |