Patent US3361862A successfully refreshed from Google Patents.
US3361862A
Expired / Lapsed
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System for supplying power to an electric arc metallurgical furnace
Assignee: Union Carbide Corp
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Filing: 1964-06-15
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Granted: 1968-01-02
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Expires: 1984-06-15
Abstract
No abstract record available.
Inventors
- 👤 William R Sturrock
- 👤 Allen J Baker
- 👤 Henry W Mcrobbie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:31
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/32; H05H1/34; H05H1/36; H05B; H05B7/00; H05B7/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
AN ELECTRIC ARC METALLURGICAL FURNACE CONTAINING A CHARGE OF RAW MATERIAL ELECTRICALLY CONDUCTIVE AT LEAST IN THE MOLTEN STATE INCLUDING A DEVICE FOR PRODUCING A DIRECTIONALLY STABLE ARC HAVING AN ELECTRODE AND A NOZZLE SURROUNDING AND RADIALLY SPACED FROM SAID ELECTRODE SO AS TO PROVIDE A PASSAGE FOR ARC GAS TO FLOW BETWEEN SAID ELECTRODE AND NOZZLE IN COMBINATION WITH AN ELECTRICAL CIRCUIT COMPRISING AN A.C. POWER SOURCE, AT LEAST ONE RECTIFYING ELEMENT CONNECTED BETWEEN SAID POWER SOURCE AND SAID NOZZLE SO THAT SAID NOZZLE WILL COLLECT ELECTRONS WHEN SAID NOZZLE IS ELECTRICALLY POSITIVE WITH RESPECT TO SAID MOLTEN BATH.
Claim 2
Dependent Claim
100 words
AN ELECTRIC ARC METALLURGICAL FURNACE CONTAINING A CHARGE OF RAW MATERIAL ELECTRICALLY CONDUCTIVE AT LEAST IN THE MOLTEN STATE INCLUDING A DEVICE FOR PRODUCING A DIRECTIONALLY STABLE ARC HAVING AN ELECTRODE AND A NOZZLE SURROUNDING AND RADIALLY SPACED FROM SAID ELECTRODE SO AS TO PROVIDE A PASSAGE FOR ARC GAS TO FLOW BETWEEN SAID ELECTRODE AND NOZZLE IN COMBINATION WITH AN ELECTRICAL CIRCUIT COMPRISING AN A.C. POWER SOURCE, AT LEAST ONE RECTIFYING ELEMENT CONNECTED BETWEEN SAID POWER SOURCE AND SAID NOZZLE SO THAT SAID NOZZLE WILL COLLECT ELECTRONS WHEN SAID NOZZLE IS ELECTRICALLY POSITIVE WITH RESPECT TO SAID MOLTEN BATH.
References Cited (Backward Citations)
US2907807A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |