US3392379A
Expired / Lapsed
US
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Static logic annunciator
Assignee: Monsanto Co
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Filing: 1964-10-05
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Granted: 1968-07-09
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Expires: 1984-10-05
Abstract
No abstract record available.
Inventors
- 👤 Edward M Thomason
- 👤 Mauro G Togneri
- 👤 Charles J Baltzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:20
CPC Classifications
G; G08; G08B; G08B25/00; G08B25/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
AN ANNUNCIATOR SYSTEM FOR PROVIDING A PLURALITY OF OBSERVABLE INDICATIONS OF THE OCCURRENCES OF ALARM CONDITIONS OF EACH OF A PLURALITY OF VARIABLES, SAID ANNUNCIATOR SYSTEM COMPRISING A PLURALITY OF READILY INTERCHANGEABLE ALARM CIRCUITS, THE NUMBER OF SAID ALARM CIRCUITS BEING EQUAL TO THE NUMBER OF VARIABLES MONITORED, EACH OF SAID ALARM CIRCUITS COMPRISING, IN COMBINATION, A FIRST ALARM MEANS CONNECTED ACROSS A POWER SOURCE, A TRANSISTOR OPERATING IN THE SWITCHING MODE IN SERIES WITH SAID FIRST ALARM MEANS FOR SWITCHING SAID FIRST ALARM MEANS ON AND OFF, A SECOND ALARM MEANS CONNECTED ACROSS SAID POWER SOURCE, A SOLID STATE CONTROLLED RECTIFIER IN SERIES CIRCUIT WITH SAID A SECOND ALARM MEANS FOR SWITCHING SAID SECOND ALARM MEANS, ON, A VOLTAGE-DROPPING RESISTOR CONNECTED BETWEEN THE GATE CONTROL OF SAID POWER SOURCE AND THE BASE ELECTRODE OF SAID TRANSISTOR, A COUPLING MEANS CONNECTED BETWEEN THE GATE CONTROL ELEMENT OF SAID SOLID STATE CONTROLLED RECTIFIER AND A SIGNAL DRIVING POINT INTERMEDIATE THE CONNECTION BETWEEN SAID VOLTAGE-DROPPING RESISTOR AND THE BASE ELECTRODE OF SAID TRANSISTOR,
Claim 2
Dependent Claim
171 words
AN ANNUNCIATOR SYSTEM FOR PROVIDING A PLURALITY OF OBSERVABLE INDICATIONS OF THE OCCURRENCES OF ALARM CONDITIONS OF EACH OF A PLURALITY OF VARIABLES, SAID ANNUNCIATOR SYSTEM COMPRISING A PLURALITY OF READILY INTERCHANGEABLE ALARM CIRCUITS, THE NUMBER OF SAID ALARM CIRCUITS BEING EQUAL TO THE NUMBER OF VARIABLES MONITORED, EACH OF SAID ALARM CIRCUITS COMPRISING, IN COMBINATION, A FIRST ALARM MEANS CONNECTED ACROSS A POWER SOURCE, A TRANSISTOR OPERATING IN THE SWITCHING MODE IN SERIES WITH SAID FIRST ALARM MEANS FOR SWITCHING SAID FIRST ALARM MEANS ON AND OFF, A SECOND ALARM MEANS CONNECTED ACROSS SAID POWER SOURCE, A SOLID STATE CONTROLLED RECTIFIER IN SERIES CIRCUIT WITH SAID A SECOND ALARM MEANS FOR SWITCHING SAID SECOND ALARM MEANS, ON, A VOLTAGE-DROPPING RESISTOR CONNECTED BETWEEN THE GATE CONTROL OF SAID POWER SOURCE AND THE BASE ELECTRODE OF SAID TRANSISTOR, A COUPLING MEANS CONNECTED BETWEEN THE GATE CONTROL ELEMENT OF SAID SOLID STATE CONTROLLED RECTIFIER AND A SIGNAL DRIVING POINT INTERMEDIATE THE CONNECTION BETWEEN SAID VOLTAGE-DROPPING RESISTOR AND THE BASE ELECTRODE OF SAID TRANSISTOR,
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) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |