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US3671029A
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Furnace for non-ferrous metals
Assignee: ABB Norden Holding AB
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Filing: 1970-06-08
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Granted: 1972-06-20
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Expires: 1990-06-08
Abstract
Abstract A furnace for non-ferrous metals or alloys is provided with a base supporting the furnace. Under the bottom, but supported by the base are arranged at least one electromagnetic stirrer of multiphase type.
Inventors
- 👤 Karl Gosta Karlsson
- 👤 Jan Olof Gustaf Bostedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:57
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/34; C; C22; C22B; C22B4/00; H05B2213/00; H05B2213/02; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
57 words
Furnace for non-ferrous metals or alloys with a base supporting said furnace, below the bottom of the furnace there being arranged at least one flat electromagnetic stirrer of multiphase type comprising coils and an embedding mass surrounding the same, said stirrer supporting the furnace and being supported by the base by the embedding masses of the stirrer.
Claim 2
Dependent Claim
57 words
Furnace for non-ferrous metals or alloys with a base supporting said furnace, below the bottom of the furnace there being arranged at least one flat electromagnetic stirrer of multiphase type comprising coils and an embedding mass surrounding the same, said stirrer supporting the furnace and being supported by the base by the embedding masses of the stirrer.
Claim 3
Dependent Claim
36 words
Furnace according to claim 1, characterized in that the magnetic iron part of the stirrer windings is provided with poles shoes or projections between the windings and that these projections support the bottom of the furnace.
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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |