Patent US3297811A successfully refreshed from Google Patents.
US3297811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system
Assignee: Deutsche Edelstahlwerke AG
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Filing: 1964-01-20
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Granted: 1967-01-10
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Expires: 1984-01-20
Abstract
No abstract record available.
Inventors
- 👤 Kugler Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:16
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/16; H05B6/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
IN A TROUGH-TYPE INDUCTION FURNACE HAVING A LINING PROVIDED WITH AN OPENING, WITHIN WHICH OPENING THERE IS ARRANGED AN INDUCTION COIL WHICH ITSELF IS SPACED FROM THE WALL OF THE OPENING THEREBY TO FORM AN INTERSPACE BETWEEN THE INDUCTION COIL AND THE WALL OF THE OPENING, A CONVECTION COOLING SYSTEM ADAPTED FOR USE WITH A GASEOUS COOLANT, SAID SOOLING SYSTEM COMPRISING, IN COMBINATION: MEANS FORMING AN AUXILIARY COOLING SURFACE AND DIVIDING SAID INTERSPACE BETWEEN THE INDUCTION COIL AND THE WALL OF THE OPENING; MEANS FORMING A MAIN COOLING SURFACE SPACED FROM SAID AUXILIARY COOLING SURFACE AND ARRANGED AGAINST THE WALL OF THE OPENING; MEANS FORMING A THIRD COOLING SURFACE ARRANGED BETWEEN SAID MAIN AND AUXILIARY COOLING SURFACES FOR DIVIDING THE SPACE BETWEEN SAID MAIN AND AUXILIARY COOLING SURFACES INTO COOLANT CHANNELING OF REDUCED CROSS SECTION; AND MEANS FOR PERMITTING A GASEOUS COOLANT TO FLOW OVER SAID COOLING SURFACES SO AS TO COOL THE SAME BY CONVECTION.
Claim 2
Dependent Claim
156 words
IN A TROUGH-TYPE INDUCTION FURNACE HAVING A LINING PROVIDED WITH AN OPENING, WITHIN WHICH OPENING THERE IS ARRANGED AN INDUCTION COIL WHICH ITSELF IS SPACED FROM THE WALL OF THE OPENING THEREBY TO FORM AN INTERSPACE BETWEEN THE INDUCTION COIL AND THE WALL OF THE OPENING, A CONVECTION COOLING SYSTEM ADAPTED FOR USE WITH A GASEOUS COOLANT, SAID SOOLING SYSTEM COMPRISING, IN COMBINATION: MEANS FORMING AN AUXILIARY COOLING SURFACE AND DIVIDING SAID INTERSPACE BETWEEN THE INDUCTION COIL AND THE WALL OF THE OPENING; MEANS FORMING A MAIN COOLING SURFACE SPACED FROM SAID AUXILIARY COOLING SURFACE AND ARRANGED AGAINST THE WALL OF THE OPENING; MEANS FORMING A THIRD COOLING SURFACE ARRANGED BETWEEN SAID MAIN AND AUXILIARY COOLING SURFACES FOR DIVIDING THE SPACE BETWEEN SAID MAIN AND AUXILIARY COOLING SURFACES INTO COOLANT CHANNELING OF REDUCED CROSS SECTION; AND MEANS FOR PERMITTING A GASEOUS COOLANT TO FLOW OVER SAID COOLING SURFACES SO AS TO COOL THE SAME BY CONVECTION.
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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |