US2914386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular furnace
Assignee: Hercules Powder Co
•
Filing: 1954-12-20
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Granted: 1959-11-24
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Expires: 1974-12-20
Abstract
No abstract record available.
Inventors
- 👤 James H Shapleigh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:59
CPC Classifications
F; F23; F23C; F23C3/00; F23C3/006; C; C10; C10G; C10G9/00; C10G9/14; C10G9/18; C10G9/20; F22; F22B; F22B31/00; F23M; F23M5/00; F23M2700/00; F23M2700/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A TUBULAR REACTION FURNACE COMPRISING IN COMBINATION A SHELL COMPRISING AN ELONGATED REFRACTORY WALLED HEATING CHAMBER HAVING SPACED WALL PORTIONS OF GREATER THICKNESS THAN THE INTERMEDIATE PORTIONS; METALLIC REACTION TUBES PASSING CENTRALLY THROUGH THE SAID HEATING CHAMBER ND SPACED FROM THE SAID CHAMBER WALLS; FLUID HYDROCARBON BURNERS TO FURNISH HOT COMBUSTION GAS TO THE HEATING CHAMBER, SUPPORTED SO AS TO MAINTAIN BURNER NOZZLES THEREOF MOUNTED SUBSTANTIALY COAXIALLY IN ELONGATED CONDUIT TYPE TUNNELS FORMED IN THE THICKER PORTIONS OF THE CHAMBER WALLS; SAID TUNNELS BEING POSITIONED BY A PLURALITY OF DIFFERENT LEVELS ABOUT THE PERIPHERY OF SAID CHAMBER AND DIRECTED AWAY FROM SAID TUBES TOWARD A POINT INTERMEDIATE SAID TUBES AND A WALL PORTION OF SAID CHAMBER, AND EACH SAID TUNNEL BEING SO DISPOSED THAT A STRAIGHT LINE DRAWN THEREIN FROM THE BURNER NOZZLE TO A POINT AT THE END OF THE TUNNEL WAL CLOSET TO SAID NOZZLE, WILL PASS, WHEN EXTENDED, WITHOUT INTERSECTING ANY OF THE TUBE SURFACES.
Claim 2
Dependent Claim
158 words
A TUBULAR REACTION FURNACE COMPRISING IN COMBINATION A SHELL COMPRISING AN ELONGATED REFRACTORY WALLED HEATING CHAMBER HAVING SPACED WALL PORTIONS OF GREATER THICKNESS THAN THE INTERMEDIATE PORTIONS; METALLIC REACTION TUBES PASSING CENTRALLY THROUGH THE SAID HEATING CHAMBER ND SPACED FROM THE SAID CHAMBER WALLS; FLUID HYDROCARBON BURNERS TO FURNISH HOT COMBUSTION GAS TO THE HEATING CHAMBER, SUPPORTED SO AS TO MAINTAIN BURNER NOZZLES THEREOF MOUNTED SUBSTANTIALY COAXIALLY IN ELONGATED CONDUIT TYPE TUNNELS FORMED IN THE THICKER PORTIONS OF THE CHAMBER WALLS; SAID TUNNELS BEING POSITIONED BY A PLURALITY OF DIFFERENT LEVELS ABOUT THE PERIPHERY OF SAID CHAMBER AND DIRECTED AWAY FROM SAID TUBES TOWARD A POINT INTERMEDIATE SAID TUBES AND A WALL PORTION OF SAID CHAMBER, AND EACH SAID TUNNEL BEING SO DISPOSED THAT A STRAIGHT LINE DRAWN THEREIN FROM THE BURNER NOZZLE TO A POINT AT THE END OF THE TUNNEL WAL CLOSET TO SAID NOZZLE, WILL PASS, WHEN EXTENDED, WITHOUT INTERSECTING ANY OF THE TUBE SURFACES.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |