US3136835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for equalizing the heat balance within an electric furnace
Assignee: Northwestern Steel and Wire Co
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Filing: 1961-08-03
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Granted: 1964-06-09
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Expires: 1981-08-03
Abstract
No abstract record available.
Inventors
- 👤 Paul W Dillon
- 👤 Charles G Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:22
CPC Classifications
F; F27; F27B; F27B3/00; F27B3/08; F27D; F27D11/00; F27D11/08; H; H05; H05B; H05B7/00; H05B7/18; H05B7/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
THE METHOD OF MELTING METALS WHICH COMPRISES THE STEPS OF ESTABLISHING A SERIES OF EQUALLY SPACED ARC ZONES IN AN ELECTRIC FURNACE BY GENERATING A SERIES OF ARCS BETWEEN THE ELECTRODES AND THE CHARGE WITHIN THE FURNACE, AND CONTROLLING THE HEAT BALANCE WITHIN THE FURNACE BY THE PROJECTION OF ADDITIONAL HIGH VELOCITY RAPIDLY EXPANDING B.T.U. ENERGY IN THE FORM OF PLASMA FLAMES DIRECTED RADIALLY TOWARDS THE CENTER OF THE FURNACE INTO THE COLD AREAS OF THE FURNACE INDEPENDENTLY OF THE ARCS FORMED BY THE ELECTRODES, BY IONIZING LOW DENSITY IONIZABLE GASES BY HEATING TGRUBULENTLY FLOWING GASES BY ELECTRIC ARCS AND PASSING THE GASES THROUGH THE ARCS INTO THE FURNACE RADIALLY TOWARD THE CENTER THEREOF, AT LOCATIONS SPACED BETWEEN THE ARCS FORMED BY THE ELECTRODES.
Claim 2
Independent Claim
124 words
THE METHOD OF MELTING METALS WHICH COMPRISES THE STEPS OF ESTABLISHING A SERIES OF EQUALLY SPACED ARC ZONES IN AN ELECTRIC FURNACE BY GENERATING A SERIES OF ARCS BETWEEN THE ELECTRODES AND THE CHARGE WITHIN THE FURNACE, AND CONTROLLING THE HEAT BALANCE WITHIN THE FURNACE BY THE PROJECTION OF ADDITIONAL HIGH VELOCITY RAPIDLY EXPANDING B.T.U. ENERGY IN THE FORM OF PLASMA FLAMES DIRECTED RADIALLY TOWARDS THE CENTER OF THE FURNACE INTO THE COLD AREAS OF THE FURNACE INDEPENDENTLY OF THE ARCS FORMED BY THE ELECTRODES, BY IONIZING LOW DENSITY IONIZABLE GASES BY HEATING TGRUBULENTLY FLOWING GASES BY ELECTRIC ARCS AND PASSING THE GASES THROUGH THE ARCS INTO THE FURNACE RADIALLY TOWARD THE CENTER THEREOF, AT LOCATIONS SPACED BETWEEN THE ARCS FORMED BY THE ELECTRODES.
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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |