US2866743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the current supply to the cathodic layer in three-layer aluminium refining cells
Assignee: Aluminium Industrie AG
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Filing: 1956-12-27
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Granted: 1958-12-30
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Expires: 1976-12-27
Abstract
No abstract record available.
Inventors
- 👤 Schmitt Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:35
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/06; C25C3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
AN ELECTROLYTIC DEVICE FOR REFINING ALUMINUM ACCORDING TO THE THREE-LAYER PROCESSING WHICH A LAYER OF MOLTEN METAL FLOATS ON THE ELECTROLYTE TO SERVE AS AN ELECTRODE, COMPRISING A CELL, A CHANNEL EXTENDING FROM SAID CELL AT THE INNER END OF SAID CHANNEL WHERE SAID CHANNEL COMMUNICATES WITH SAID CELL AND ADAPTED TO RECEIVE A PORTION OF SAID LAYER OF MOLTEN METAL TO FORM A METAL VEIN THEREIN, CONDUCTIVE MEANS EXTENDING INTO THE OUTER END OF SAID CHANNEL, SAID CHANNEL BEING OF SUCH SIZE THAT THE CROSS-SECTIONAL AREA OF THE METAL VEIN THEREIN IS AT LEAST AS GREAT AS THE CRITICAL CROSS-SECTIONAL AREA AT WHICH CONTRACTION THROUGH PINCHING EFFECT TAKES PLACE, THIS CRITICAL CROSS-SECTIONAL AREA BEING CALCULATED AS FOLLOWS:
Claim 2
Dependent Claim
118 words
AN ELECTROLYTIC DEVICE FOR REFINING ALUMINUM ACCORDING TO THE THREE-LAYER PROCESSING WHICH A LAYER OF MOLTEN METAL FLOATS ON THE ELECTROLYTE TO SERVE AS AN ELECTRODE, COMPRISING A CELL, A CHANNEL EXTENDING FROM SAID CELL AT THE INNER END OF SAID CHANNEL WHERE SAID CHANNEL COMMUNICATES WITH SAID CELL AND ADAPTED TO RECEIVE A PORTION OF SAID LAYER OF MOLTEN METAL TO FORM A METAL VEIN THEREIN, CONDUCTIVE MEANS EXTENDING INTO THE OUTER END OF SAID CHANNEL, SAID CHANNEL BEING OF SUCH SIZE THAT THE CROSS-SECTIONAL AREA OF THE METAL VEIN THEREIN IS AT LEAST AS GREAT AS THE CRITICAL CROSS-SECTIONAL AREA AT WHICH CONTRACTION THROUGH PINCHING EFFECT TAKES PLACE, THIS CRITICAL CROSS-SECTIONAL AREA BEING CALCULATED AS FOLLOWS:
References Cited (Backward Citations)
US2584565A
Cited
US2685566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |