US3138150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submerged hot gas heat exchanger
Assignee: Thermal Research and Engineering Corp
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Filing: 1962-09-11
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Granted: 1964-06-23
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Expires: 1982-09-11
Abstract
No abstract record available.
Inventors
- 👤 James P Hyer
- 👤 Joseph J Santoleri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:27
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/22; F24H1/24; F24H1/26; F24H1/28; F17; F17C; F17C9/00; F17C9/02; F22; F22B; F22B1/00; F22B1/22; F22B1/26; F22B1/265; F23; F23C; F23C3/00; F23C3/004; F25; F25J; F25J5/00; F25J5/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
SUBMERGED HOT GAS HEAT EXCHANGE APPARATUS, COMPRISING IN COMBINATION, A TANK HOLDING A BODY OF HEAT EXCHANGE LIQUID THEREIN, A FUEL BURNER HAVING A NOZZLE ABOVE THE TANK, A BARE DOWNCOMER TUBE SURROUNDING AND EXTENDING DOWNWARDLY FROM SAID BURNER NOZZLE AND HAVING ITS LOWER END SUBMERGED IN THE LIQUID, A COIL FOR SUBJECT LIQUID TO BE HEATED SURROUNDING SAID DOWNCOMER TUBE, SAID DOWNCOMER TUBE PROVIDING AN OPENING AT ITS LOWER END FOR THE ESCAPE OF COMBUSTION GASES THEREFROM INTO THE LIQUID AROUND SAID COIL, MEANS FOR BAFFLING THE DOWNFLOW OF HOT GASES FROM SAID DOWNCOMER TUBE, AND A WEIR SURROUNDING SAID COIL AND SPACED FROM SAID DOWNCOMER TUBE AND THE SIDES OF SAID TANK TO PROVIDE AN INTERIOR ANNULAR SPACE FOR ASCENDING HOT GASES AND LIQUID OVER SAID COIL AND AN OUTER ANNULAR SPACE FOR THE DOWNFLOW OF LIQUID, SAID WEIR HAVING AN OPENING AT THE TOP ABOVE THE OPERATING LIQUID LEVEL IN SAID TANK FOR THE OUTFLOW OF GAS AND LIQUID.
Claim 2
Dependent Claim
162 words
SUBMERGED HOT GAS HEAT EXCHANGE APPARATUS, COMPRISING IN COMBINATION, A TANK HOLDING A BODY OF HEAT EXCHANGE LIQUID THEREIN, A FUEL BURNER HAVING A NOZZLE ABOVE THE TANK, A BARE DOWNCOMER TUBE SURROUNDING AND EXTENDING DOWNWARDLY FROM SAID BURNER NOZZLE AND HAVING ITS LOWER END SUBMERGED IN THE LIQUID, A COIL FOR SUBJECT LIQUID TO BE HEATED SURROUNDING SAID DOWNCOMER TUBE, SAID DOWNCOMER TUBE PROVIDING AN OPENING AT ITS LOWER END FOR THE ESCAPE OF COMBUSTION GASES THEREFROM INTO THE LIQUID AROUND SAID COIL, MEANS FOR BAFFLING THE DOWNFLOW OF HOT GASES FROM SAID DOWNCOMER TUBE, AND A WEIR SURROUNDING SAID COIL AND SPACED FROM SAID DOWNCOMER TUBE AND THE SIDES OF SAID TANK TO PROVIDE AN INTERIOR ANNULAR SPACE FOR ASCENDING HOT GASES AND LIQUID OVER SAID COIL AND AN OUTER ANNULAR SPACE FOR THE DOWNFLOW OF LIQUID, SAID WEIR HAVING AN OPENING AT THE TOP ABOVE THE OPERATING LIQUID LEVEL IN SAID TANK FOR THE OUTFLOW OF GAS AND LIQUID.
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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |