Patent US3266485A successfully refreshed from Google Patents.
US3266485A
Expired / Lapsed
US
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Recirculating immersion heater
Assignee: CM Kemp Manufacturing Co
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Filing: 1964-04-13
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Granted: 1966-08-16
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Expires: 1984-04-13
Abstract
No abstract record available.
Inventors
- 👤 Girton William Zender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:43
CPC Classifications
F; F23; F23C; F23C3/00; F23C3/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A COMBUSTION-TYPE IMMERSION HEATER FOR MAINTAINING MATERIAL IN A MOLTEN STATE, WHICH COMPRISES A HEATER BODY HAVING AN INNER AND OUTER COUNTERCURRENT FLOW PATH, INSULATING MEANS POSITIONED WITHIN THE UPPER END OF THE OUTER PORTION OF SAID FLOW PATH, BURNER MEANS FOR SUPPLYING HOT PRODUCTS OF COMBUSTION INTO THE ENTRANCE OF THE INNER PORTION OF SAID FLOW PATH, A SPACE IN THE TOP OF SAID HEATER BODY INTERCONNECTING THE ENDS OF SAID FLOW PATH FOR RECIRCULATING A PORTION OF THE PRODUCTS OF COMBUSTION EXITING FROM SAID FLOW PATH, AND EXHAUST PORT MEANS IN THE TOP OF SAID HEATER FOR REMOVING TO THE ATMOSPHERE THE REMATINING PORTION OF THE PRODUCTS OF COMBUSTION EXITING FROM SAID FLOW PATH, SAID INSULATING MEANS PREVENTING HEAT RADIATION FROM THE UPPER PORTION OF SAID HEATER WHEREBY DROSS LINE CORROSION OF SAID HEATER IS REDUCED.
Claim 2
Dependent Claim
138 words
A COMBUSTION-TYPE IMMERSION HEATER FOR MAINTAINING MATERIAL IN A MOLTEN STATE, WHICH COMPRISES A HEATER BODY HAVING AN INNER AND OUTER COUNTERCURRENT FLOW PATH, INSULATING MEANS POSITIONED WITHIN THE UPPER END OF THE OUTER PORTION OF SAID FLOW PATH, BURNER MEANS FOR SUPPLYING HOT PRODUCTS OF COMBUSTION INTO THE ENTRANCE OF THE INNER PORTION OF SAID FLOW PATH, A SPACE IN THE TOP OF SAID HEATER BODY INTERCONNECTING THE ENDS OF SAID FLOW PATH FOR RECIRCULATING A PORTION OF THE PRODUCTS OF COMBUSTION EXITING FROM SAID FLOW PATH, AND EXHAUST PORT MEANS IN THE TOP OF SAID HEATER FOR REMOVING TO THE ATMOSPHERE THE REMATINING PORTION OF THE PRODUCTS OF COMBUSTION EXITING FROM SAID FLOW PATH, SAID INSULATING MEANS PREVENTING HEAT RADIATION FROM THE UPPER PORTION OF SAID HEATER WHEREBY DROSS LINE CORROSION OF SAID HEATER IS REDUCED.
References Cited (Backward Citations)
US1073587A
Cited
US1080113A
Cited
US1730440A
Cited
US2515618A
Cited
US2556984A
Cited
US2530271A
Cited
GB716579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |