US3284069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burners used in open hearth furnaces
Assignee: Cockerill Ougree Providence et Esperance Longdoz
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Filing: 1964-03-06
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Granted: 1966-11-08
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Expires: 1984-03-06
Abstract
No abstract record available.
Inventors
- 👤 Jean M Levaux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:33
CPC Classifications
F; F23; F23C; F23C99/00; F23D; F23D11/00; F23D17/00; F27; F27B; F27B3/00; F27B3/002; F27B3/10; F27B3/20; F23C2700/00; F23C2700/02; F23C2700/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN A FURNACE, A BURNER COMPRISING TWO TUBES PLACED ONE INSIDE THE OTHER SO AS TO DEFINE AN INNER DUCT SURROUNDED BY AND DISCRETE FROM AN OUTER ANNULAR DUCT, A FLAT PLATE WHICH IS OBLIQUE IN RELATION TO THE TUBES AND IS FIXED TO THE TUBES IN SUCH A MANNER THAT EACH OF THE DUCTS COMMUNICATES SEPARATELY WITH AT LEAST ONE HOLE IN THE PLATE, THE AXES OF THESE HOLES BEING APPROXIMATELY PERPENDICULAR OF THE PLATE, THE BURNER PASSING THROUGH AN APERTURE IN THE WALL OF THE FURNACE, THE AXES OF THE HOLES IN THE PLATE EXTENDING INTO THE FURNACE.
Claim 2
Dependent Claim
100 words
IN A FURNACE, A BURNER COMPRISING TWO TUBES PLACED ONE INSIDE THE OTHER SO AS TO DEFINE AN INNER DUCT SURROUNDED BY AND DISCRETE FROM AN OUTER ANNULAR DUCT, A FLAT PLATE WHICH IS OBLIQUE IN RELATION TO THE TUBES AND IS FIXED TO THE TUBES IN SUCH A MANNER THAT EACH OF THE DUCTS COMMUNICATES SEPARATELY WITH AT LEAST ONE HOLE IN THE PLATE, THE AXES OF THESE HOLES BEING APPROXIMATELY PERPENDICULAR OF THE PLATE, THE BURNER PASSING THROUGH AN APERTURE IN THE WALL OF THE FURNACE, THE AXES OF THE HOLES IN THE PLATE EXTENDING INTO THE FURNACE.
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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |