US3756806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Of with lighter materials process and apparatus for separating molten metal from mixtures there
Assignee: Individual
•
Filing: 1971-07-19
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Granted: 1973-09-04
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Expires: 1991-07-19
Abstract
Abstract METHOD AND APPARATUS FOR SEPARATING MOLTEN METAL FROM A MIXTURE THEREOF WITH LIGHTER MATERIALS WHEREIN MIXTURE IS INTRODUCED INTO THE UPPER END OF AN INCLINED ROTATING CHAMBER. THE CHAMBER IS ROTATED AT A SPEED AND AT AN INCLINED ANGLE TO SEPARATE MOLTEN METAL FROM LIGHTER MATERIALS WITH OUTER SURFACE OF THE MIXTURE CONFORMING TO INNER SURFACE OF CHAMBER AND INNER SURFACE OF MIXTURE FORMING A CONE. UPON A PREDETERMINED INCREASE IN MIXTURE LEVEL, MOLTEN METAL IS REMOVED FROM OUTER PORTION OF MIXTURE, ADJACENT LOWER END OF THE CHAMBER AND LIGHTER MATERIALS ARE REMOVED FROM INNER PORTION OF MIXTURE ADJACENT LOWER END OF THE CHAMBER.
Inventors
- 👤 R Hathorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:44
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/02; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |