US5268670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alert condition system usable for personnel monitoring
Assignee: SENIOR TECHNOLOGIES Inc A Corp OF
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Filing: 1991-10-04
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Granted: 1993-12-07
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Expires: 2011-10-04
Abstract
Abstract To generate an alert signal indicating that an unauthorized subject is in a first region within seven feet of a passageway, a radio transmitter is worn by the subject and received by a receiver at the passageway. A second signal is generated upon satisfaction of a second condition, such as an open door at the passageway, which second signal indicates the likelihood of the subject passing through the passageway. A first display indicates if the first signal is present and a second signal if the second condition occurs.
Inventors
- 👤 John J. Brasch
- 👤 Alan W. Cross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:10
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/02; G08B13/08; G07; G07C; G07C9/00; G07C9/20; G07C9/28
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
91 words
A method of generating an alert signal comprising the steps of: generating a first signal when an unauthorized subject is in a first region within seven feet of a monitored passageway; generating a second signal upon satisfaction of a second condition that indicates the likelihood of the subject passing through the passageway; displaying a first indication if the first signal is present and a second indication if the second condition occurs; the step of generating a first signal including the step of transmitting a signal from the subject to a receiver.
Claim 2
Independent Claim
91 words
A method of generating an alert signal comprising the steps of: generating a first signal when an unauthorized subject is in a first region within seven feet of a monitored passageway; generating a second signal upon satisfaction of a second condition that indicates the likelihood of the subject passing through the passageway; displaying a first indication if the first signal is present and a second indication if the second condition occurs; the step of generating a first signal including the step of transmitting a signal from the subject to a receiver.
Claim 3
Dependent Claim
32 words
A method in accordance with claim 1 in which the step of generating the second signal includes the step of generating a second signal whenever a door to the passageway is open.
Claim 4
Dependent Claim
34 words
A method in accordance with claim 1 in which the step of generating the second signal includes the step of generating a second signal whenever an infrared detector senses a person at the passageway.
Claim 5
Dependent Claim
41 words
A method in accordance with claim 1 in which the step of generating second signal includes the step of generating the second signal whenever a person is sensed by a pressure pad in a first locality in front of the passageway.
Claim 6
Dependent Claim
30 words
A method in accordance with claim 1 in which the step of generating a first signal includes the step of transmitting a signal from a location adjacent to the passageway.
Claim 7
Dependent Claim
93 words
A security system comprising: first means for generating a first signal when an unauthorized subject is within seven feet of a passageway; second means for generating a second signal upon satisfaction of a second condition that indicates the likelihood of the subject passing through the passageway; and third means for displaying a first indication if the first signal is generated and for displaying a second indication upon the generation of the second signal; said first means for generating a first signal including means for transmitting a signal from the subject to a receiver.
Claim 8
Dependent Claim
93 words
A security system comprising: first means for generating a first signal when an unauthorized subject is within seven feet of a passageway; second means for generating a second signal upon satisfaction of a second condition that indicates the likelihood of the subject passing through the passageway; and third means for displaying a first indication if the first signal is generated and for displaying a second indication upon the generation of the second signal; said first means for generating a first signal including means for transmitting a signal from the subject to a receiver.
Claim 9
Dependent Claim
33 words
A security system in accordance with claim 6 in which the second means for generating a second signal includes means for generating a second signal whenever a door to the passageway is open.
Claim 10
Dependent Claim
30 words
A security system in accordance with claim 6 in which the second means comprises means for generating a second signal whenever an infrared detector senses a person at the passageway.
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) | 1996-12-06 | 1997-06-07 | 1997-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-06 | 2001-06-07 | 2001-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-06 | 2005-06-07 | 2005-12-07 | $7700.00 | Window Closed / Lapsed |