US3222664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detection apparatus
Assignee: Honeywell Inc
•
Filing: 1962-12-03
•
Granted: 1965-12-07
•
Expires: 1982-12-03
Abstract
No abstract record available.
Inventors
- 👤 Premack Joshua
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:09
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN AN INTRUDER DETECTION SYSTEM, A PAIR OF OSCILLATORS WHICH ARE SET TO OSCILLATE AT SUBSTANTIALLY IDENTICAL FREQUENCIES; IMPEDANCE MEANS INTERCOUPLING SAID OSCILLATORS AND EFFECTIVE TO MAINTAIN SAID OSCILLATORS IN FREQUENCY SYNCHRONISM THROUGHOUT THE RANGE OF OPERATION OF THE SYSTEM, THE OSCILLATIONS OF SAID OSCILLATORS BEING SUBJECT TO A DISPLACEMENT IN PHASE ANGLE ONE FROM THE OTHER EVEN THOUGH REMAINING IN FREQUENCY SYNCHRONIZATION; INTRUDER SENSING ENERGY TRANSMITTING MEANS COUPLED TO ONE OF SAID OSCILLATORS AND RESPONSIVE TO THE INGRESS OF AN INTRUDER TO VARY THE MAGNITUDE OF SAID PHASE DISPLACEMENT; MEANS CONNECTED BETWEEN SAID OSCILLATORS FOR DERIVING SIGNALS WHICH VARY AS A FUNCTION OF THE CHANGE IN PHASE ANGLE RESULTING FROM THE INGRESS OF SAID INTRUDER; AND MEANS RESPONSIVE TO SAID DERIVED SIGNALS DUE TO THE INGRESS OF AN INTRUDER FOR OPERATING AN ALARM.
Claim 2
Dependent Claim
134 words
IN AN INTRUDER DETECTION SYSTEM, A PAIR OF OSCILLATORS WHICH ARE SET TO OSCILLATE AT SUBSTANTIALLY IDENTICAL FREQUENCIES; IMPEDANCE MEANS INTERCOUPLING SAID OSCILLATORS AND EFFECTIVE TO MAINTAIN SAID OSCILLATORS IN FREQUENCY SYNCHRONISM THROUGHOUT THE RANGE OF OPERATION OF THE SYSTEM, THE OSCILLATIONS OF SAID OSCILLATORS BEING SUBJECT TO A DISPLACEMENT IN PHASE ANGLE ONE FROM THE OTHER EVEN THOUGH REMAINING IN FREQUENCY SYNCHRONIZATION; INTRUDER SENSING ENERGY TRANSMITTING MEANS COUPLED TO ONE OF SAID OSCILLATORS AND RESPONSIVE TO THE INGRESS OF AN INTRUDER TO VARY THE MAGNITUDE OF SAID PHASE DISPLACEMENT; MEANS CONNECTED BETWEEN SAID OSCILLATORS FOR DERIVING SIGNALS WHICH VARY AS A FUNCTION OF THE CHANGE IN PHASE ANGLE RESULTING FROM THE INGRESS OF SAID INTRUDER; AND MEANS RESPONSIVE TO SAID DERIVED SIGNALS DUE TO THE INGRESS OF AN INTRUDER FOR OPERATING AN ALARM.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |