Patent US3280882A successfully refreshed from Google Patents.
US3280882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame detector arrangement
Assignee: Babcock and Wilcox Co
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Filing: 1964-04-06
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Granted: 1966-10-25
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Expires: 1984-04-06
Abstract
No abstract record available.
Inventors
- 👤 Fritz L Hemker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:40
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; F23M; F23M11/00; F23M11/04; F23M11/045; F23N5/085; F23N2229/00; F23N2229/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
IN COMBINATION, A FURNACE WALL FORMED WITH A BURNER PORT, MEANS FOR SUPPLYING PULVERIZED COAL AND COMBUSTION AIR TO SAID FURNACE INCLUDING A HORIZONTAL BURNER NOZZLE OF CIRCULAR CROSS-SECTION ADAPTED TO PASS A STREAM OF PULVERIZED COAL AND CARRIER AIR INTO SAID FURNACE AND HAVING ITS DISCHARGE END DISPOSED ADJACENT SAID BURNER PORT, A HORIZONTAL PIPE DISPOSED WITHIN AND COAXIALLY OF SAID BURNER NOZZLE AND HAVING A RADIATION PERVIOUS END, MEANS DISPOSED AT THE DISCHARGE END OF SAID NOZZLE FOR DISPERSING THE FUEL PARTICLES DISCHARGING FROM SAID NOZZLE THROUGH SAID BURNER PORT, MEANS FOR SUPPLYING COMBUSTION AIR TO SAID BURNER PORT FOR ESTABLISHING A FLAME SENSING CENT THE DISCHARGE END OF SAID NOZZLE, AND FLAME SENSING MEANS INCLUDING A DETECTOR TUBE DISPOSED WITHIN SAID PIPE AT A POSITION CONTIGUOUS TO THE DISCHARGE END OF SAID NOZZLE, SAID DETECTOR TUBE BEING SENSITIVE TO ONLY INVISIBLE RADIATION EMITTED BY THE COMBUSTION FLAME AND BEING OPERATIVE TO ESTABLISH AN ELECTRIC OUTPUT SIGNAL INDICATIVE OF THE CONDITION OF SAID FLAME.
Claim 2
Dependent Claim
166 words
IN COMBINATION, A FURNACE WALL FORMED WITH A BURNER PORT, MEANS FOR SUPPLYING PULVERIZED COAL AND COMBUSTION AIR TO SAID FURNACE INCLUDING A HORIZONTAL BURNER NOZZLE OF CIRCULAR CROSS-SECTION ADAPTED TO PASS A STREAM OF PULVERIZED COAL AND CARRIER AIR INTO SAID FURNACE AND HAVING ITS DISCHARGE END DISPOSED ADJACENT SAID BURNER PORT, A HORIZONTAL PIPE DISPOSED WITHIN AND COAXIALLY OF SAID BURNER NOZZLE AND HAVING A RADIATION PERVIOUS END, MEANS DISPOSED AT THE DISCHARGE END OF SAID NOZZLE FOR DISPERSING THE FUEL PARTICLES DISCHARGING FROM SAID NOZZLE THROUGH SAID BURNER PORT, MEANS FOR SUPPLYING COMBUSTION AIR TO SAID BURNER PORT FOR ESTABLISHING A FLAME SENSING CENT THE DISCHARGE END OF SAID NOZZLE, AND FLAME SENSING MEANS INCLUDING A DETECTOR TUBE DISPOSED WITHIN SAID PIPE AT A POSITION CONTIGUOUS TO THE DISCHARGE END OF SAID NOZZLE, SAID DETECTOR TUBE BEING SENSITIVE TO ONLY INVISIBLE RADIATION EMITTED BY THE COMBUSTION FLAME AND BEING OPERATIVE TO ESTABLISH AN ELECTRIC OUTPUT SIGNAL INDICATIVE OF THE CONDITION OF SAID FLAME.
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |