Patent US2836637A successfully refreshed from Google Patents.
US2836637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for removing liquid metal from furnaces
Assignee: Pechiney SA
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Filing: 1955-06-03
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Granted: 1958-05-27
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Expires: 1975-06-03
Abstract
No abstract record available.
Inventors
- 👤 Spagnoletti Felix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:59
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
APPARATUS FOR REMOVING MOLTEN METAL COMPRISING IN COMBINATION: A VESSEL CONSTITUTING THE CRUCIBLE OF AN ELECTRIC FURNACE AND IN CONTACT WITH THE LIQUID METAL TO BE REMOVED; MEANS FOR GENERATING A ROTATING MAGNETIC FIELD ADJACENT TO BUT OUT OF CONTACT WITH THE METAL TO BE REMOVED; A REFRACTORY CASING DISPOSED BETWEEN THE VESSEL AND SAID GENERATING MEANS; AND A DISCHARGE OPENING FOR THE MOLTEN METAL IN THE UPPER PORTION OF SAID VESSEL.
Claim 2
Dependent Claim
72 words
APPARATUS FOR REMOVING MOLTEN METAL COMPRISING IN COMBINATION: A VESSEL CONSTITUTING THE CRUCIBLE OF AN ELECTRIC FURNACE AND IN CONTACT WITH THE LIQUID METAL TO BE REMOVED; MEANS FOR GENERATING A ROTATING MAGNETIC FIELD ADJACENT TO BUT OUT OF CONTACT WITH THE METAL TO BE REMOVED; A REFRACTORY CASING DISPOSED BETWEEN THE VESSEL AND SAID GENERATING MEANS; AND A DISCHARGE OPENING FOR THE MOLTEN METAL IN THE UPPER PORTION OF SAID VESSEL.
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) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |