US2615706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation of metals
Assignee: Broken Hill Associated Smelters Pty Ltd
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Filing: 1950-07-17
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Granted: 1952-10-28
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Expires: 1970-07-17
Abstract
No abstract record available.
Inventors
- 👤 Thomas R A Davey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:30
CPC Classifications
C; C22; C22B; C22B19/00; C22B19/04; C22B19/16; C22B19/18; C22B5/00; C22B5/02; C22B5/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
APPARATUS FOR SEPARATING AND RECOVERING A RELATIVELY VOLATILE CONSTITUENT FROM A MOLTEN METAL COMPLEX COMPRISING A VACUUM CHAMBER, A SUNSTANTIALLY VERTICAL CONDENSER DISPOSED APPROXIMATELY CENTRALLY WITHIN THE CHAMBER AND PENDENT FROM THE TOP THEREOF, SAID CONDENSER HAVING ITS LOWER END DISPOSED ABOVE BUT ADJACENT TO THE BOTTOM OF THE CHAMBER AND HAVING THEREIN A SUBSTANTIALLY CENTRAL PASSAGE WHICH EXTENDS UPWARDLY FROM ITS LOWER END, MEANS FORMING A VACUUM PASSAGE WHICH COMMUNICATES DIRECTLY WITH SAID CENTRAL PASSAGE IN THE CONDENSER WHEREBY THE INTERIOR OF SAID CHAMBER IS MAINTAINED UNDER VACUUM BY THE WITHDRAWAL OF GASES THEREFROM THROUGH SAID PASSAGE IN THE CONDENSER, MEANS FORMING A VERTICALLY EXTENDING EVAPORATING ZONE AROUND AND SPACED FROM THE CONDENSER, MEANS FOR SUPPLYING MOLTEN METAL TO BE TREATED TO THE UPPER END PORTION OF SAID EVAPORATING ZONE AND MEANS FOR DISCHARGING MOLTEN METAL LOW IN SAID VOLATILE CONSTITUENT FROM THE LOWER END PORTION OF SAID CHAMBER.
Claim 2
Dependent Claim
150 words
APPARATUS FOR SEPARATING AND RECOVERING A RELATIVELY VOLATILE CONSTITUENT FROM A MOLTEN METAL COMPLEX COMPRISING A VACUUM CHAMBER, A SUNSTANTIALLY VERTICAL CONDENSER DISPOSED APPROXIMATELY CENTRALLY WITHIN THE CHAMBER AND PENDENT FROM THE TOP THEREOF, SAID CONDENSER HAVING ITS LOWER END DISPOSED ABOVE BUT ADJACENT TO THE BOTTOM OF THE CHAMBER AND HAVING THEREIN A SUBSTANTIALLY CENTRAL PASSAGE WHICH EXTENDS UPWARDLY FROM ITS LOWER END, MEANS FORMING A VACUUM PASSAGE WHICH COMMUNICATES DIRECTLY WITH SAID CENTRAL PASSAGE IN THE CONDENSER WHEREBY THE INTERIOR OF SAID CHAMBER IS MAINTAINED UNDER VACUUM BY THE WITHDRAWAL OF GASES THEREFROM THROUGH SAID PASSAGE IN THE CONDENSER, MEANS FORMING A VERTICALLY EXTENDING EVAPORATING ZONE AROUND AND SPACED FROM THE CONDENSER, MEANS FOR SUPPLYING MOLTEN METAL TO BE TREATED TO THE UPPER END PORTION OF SAID EVAPORATING ZONE AND MEANS FOR DISCHARGING MOLTEN METAL LOW IN SAID VOLATILE CONSTITUENT FROM THE LOWER END PORTION OF SAID CHAMBER.
References Cited (Backward Citations)
US2239370A
Cited
US2239371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |