US3159702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smelting device
Assignee: Institut de Recherches de la Siderurgie Francaise IRSID
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Filing: 1960-10-11
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Granted: 1964-12-01
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Expires: 1980-10-11
Abstract
No abstract record available.
Inventors
- 👤 Cordier Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:09
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/12; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/134
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
AN ELECTRIC ARC FURNACE, COMPRISING, IN COMBINATION, A HEARTH SECTION; MEANS FOR MAINTAINING MOLTEN MATERIAL IN SAID HEARTH SECTION AT A PREDETERMINED LEVEL; MEANS FOR PRODUCING AN ELECTRIC ARC IN SAID HEARTH SECTION ABOVE SAID PREDETERMINED LEVEL, SAID ELECTRIC ARC PRODUCING MEANS INCLUDING A PLURALITY OF ELECTRODES, AT LEAST ONE OF SAID ELECTRODES BEING FORMED WITH AN INTERIOR CONDUIT OPENING IN THE AREA OF THE TIP OF SAID ONE ELECTRODE AND ADAPTED FOR THE INJECTION THERETHROUGH OF FLUID HYDROCARBONS INTO SAID HEARTH SECTION IN THE VICINTY OF SAID ELECTRIC ARC; AND A DOWNWARDLY FLARING ELONGATED SHAFT SECTION HAVING UPPER AND LOWER END PORTIONS, SAID LOWER END PORTION BEING LOCATED ABOVE AND COMMUNICATING WITH SAID HEARTH SECTION, WHEREBY THE CHARGE INTRODUCED INTO SAID FURNACE AT THE UPPER END PORTION OF SAID SHAFT SECTION WILL PASS DOWNWARDLY INTO SAID HEARTH SECTION IN COUNTERCURRENT FLOW TO REDUCING GASES ISSUING FROM SAID HEARTH SECTION AND WILL BE SEPARATED BY THE ELECTRIC ARC IN SAID HEARTH SECTION INTO A MOLTEN METAL PORTION AND A SLAG PORTION.
Claim 2
Dependent Claim
171 words
AN ELECTRIC ARC FURNACE, COMPRISING, IN COMBINATION, A HEARTH SECTION; MEANS FOR MAINTAINING MOLTEN MATERIAL IN SAID HEARTH SECTION AT A PREDETERMINED LEVEL; MEANS FOR PRODUCING AN ELECTRIC ARC IN SAID HEARTH SECTION ABOVE SAID PREDETERMINED LEVEL, SAID ELECTRIC ARC PRODUCING MEANS INCLUDING A PLURALITY OF ELECTRODES, AT LEAST ONE OF SAID ELECTRODES BEING FORMED WITH AN INTERIOR CONDUIT OPENING IN THE AREA OF THE TIP OF SAID ONE ELECTRODE AND ADAPTED FOR THE INJECTION THERETHROUGH OF FLUID HYDROCARBONS INTO SAID HEARTH SECTION IN THE VICINTY OF SAID ELECTRIC ARC; AND A DOWNWARDLY FLARING ELONGATED SHAFT SECTION HAVING UPPER AND LOWER END PORTIONS, SAID LOWER END PORTION BEING LOCATED ABOVE AND COMMUNICATING WITH SAID HEARTH SECTION, WHEREBY THE CHARGE INTRODUCED INTO SAID FURNACE AT THE UPPER END PORTION OF SAID SHAFT SECTION WILL PASS DOWNWARDLY INTO SAID HEARTH SECTION IN COUNTERCURRENT FLOW TO REDUCING GASES ISSUING FROM SAID HEARTH SECTION AND WILL BE SEPARATED BY THE ELECTRIC ARC IN SAID HEARTH SECTION INTO A MOLTEN METAL PORTION AND A SLAG PORTION.
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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) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |