Patent US3138792A successfully refreshed from Google Patents.
US3138792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supervisory system
Assignee: Honeywell Inc
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Filing: 1960-05-26
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Granted: 1964-06-23
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Expires: 1980-05-26
Abstract
No abstract record available.
Inventors
- 👤 Felton S Jenkins
- 👤 Arlon D Kompelien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:13
CPC Classifications
G; G08; G08B; G08B29/00; G08B29/02; G08B29/06; G08B29/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
106 words
IN SECURITY APPARATUS, A DETECTOR CIRCUIT INCLUDING A PAIR OF WIRES AND A FIRST TERMINATION IMPEDANCE, A SECOND CIRCUIT INCLUDING A PAIR OF WIRES AND A SECOND TERMINATION IMPEDANCE OF EQUAL VALUE TO SAID FIRST TERMINATION IMPEDANCE, A SUPERVISORY STATION, MEANS INCLUDING A PAIR OF SWITCHES OPERATED BY MOTOR DRIVEN CAMS FOR ALTERNATELY CONNECTING SAID DETECTOR CIRCUIT AND SAID SECOND CIRCUIT TO SAID SUPERVISORY STATION, A SOURCE OF POWER, MEANS CONNECTING SAID SOURCE TO SAID SUPERVISORY STATION TO PROVIDE A CONSTANT LEVEL OF CURRENT FLOW THROUGH SAID STATION AND THROUGH EITHER SAID DETECTOR CIRCUIT OR SAID SECOND CIRCUIT, ALARM MEANS CONNECTED IN SERIES WITH SAID STATION,
References Cited (Backward Citations)
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Cited
US791961A
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US2679635A
Cited
US2707275A
Cited
US2713157A
Cited
US2655646A
Cited
US2819410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |