US3274580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation detection device circuits for use in flame sensing
Assignee: Electronics Corp of America
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Filing: 1962-08-10
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Granted: 1966-09-20
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Expires: 1982-08-10
Abstract
No abstract record available.
Inventors
- 👤 Elihu C Thomson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:54
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; F23N5/082; G; G08; G08B; G08B17/00; G08B17/12; F23N2229/00; F23N2229/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
134 words
IN COMBINATION, A RADIATION DETECTION DEVICE HAVING AN ENVELOPE TRANSPARENT TO THE RADIATION OF INTEREST, A PAIR OF SPACED ELECTRODES, MOUNTED WITHIN SAID ENVELOPE, A VOLTAGE STEP UP TRANSFORMER HAVING PRIMARY AND SECONDARY WINDINGS INDUCTIVELY COUPLED TOGETHER, SAID SECONDARY WINDING BEING CONNECTED IN SERIES WITH SAID ELECTRODES, MEANS TO SUPPLY MAGNETIZING CURRENT TO SAID PRIMARY WINDING THROUGH A CURRENT CONTROLLING RESISTANCE TO PRODUCE A HIGH VOLTAGE ELECTRIC FIELD BETWEEN SAID ELECTRODES, A CIRCUIT INCLUDING A CAPACITOR CONNECTED TO SAID PRIMARY WINDING FOR AUGMENTING SAID MAGNETIZING CURRENT SUPPLY MEANS WHEN SAID RADIATION SENSING DEVICE BREAKS DOWN IN DISCHARGE ACTION UPON THE SENSING OF RADIATION OF INTEREST, A READOUT IMPEDANCE CONNECTED IN CIRCUIT WITH SAID PRIMARY WINDING, AND MEANS COUPLED TO SAID READOUT IMPEDANCE FOR PROVIDING A SIGNAL INDICATIVE OF THE SENSING OF RADIATION OF INTEREST.
References Cited (Backward Citations)
US3142758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |