Patent US3093577A successfully refreshed from Google Patents.
US3093577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separating system
Assignee: Wilmot Engineering Co
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Filing: 1960-09-30
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Granted: 1963-06-11
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Expires: 1980-09-30
Abstract
No abstract record available.
Inventors
- 👤 George L Wilmot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:13
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/28; B03B5/30; B03B5/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A PROCESS OF SEPARATING COAL FROM RAW COAL CONTAINING COAL AND WASTE, COMPRISING FEEDING WATER AND FINELY DIVIDED MAGNETITE TO A MIXING ZONE TO FORM A COALSEPARATING SLURRY MEDIUM, FEEDING SEPARATING MEDIUM FROM SAID MIXING ZONE INTO A COAL-SEPARATING ZONE, FEEDING RAW COAL TO SAID COAL-SEPARATIG ZONE AND THERE SEPARATING THE COAL FROM THE WASTE BY CAUSING THE COAL TO FLOAT IN THE SEPARATING MEDIUM AND THE WASTE TO SINK THEREIN, SEPARATING A FRACTION OF THE MEDIUM FROM THE COAL AND WASTE BY DRAINING AND RETURNING IT TO SAID MIXING ZONE, SEPARATING ANOTHER FRACTION OF THE MEDIUM FROM ARATING THE COAL FROM THE WASTE BY CAUSING THE COAL TO FROM SAID DILUTE FRACTION AND RETURING THE RECOVERED MAGNETITE TO SAID MIXING ZONE, CONTINUOUSLY MEASURING THE DENSITY OF THE MEDIUM BEING FED TO SAID COAL-SEPARATING ZONE, AND CONTROLLING SAID DENSITY BY ADDING AND SUBTRACTING WATER AND MAGNETITE AUTOMATICALLY IN RESPONSE TO SAID MEASURING.
Claim 2
Dependent Claim
152 words
A PROCESS OF SEPARATING COAL FROM RAW COAL CONTAINING COAL AND WASTE, COMPRISING FEEDING WATER AND FINELY DIVIDED MAGNETITE TO A MIXING ZONE TO FORM A COALSEPARATING SLURRY MEDIUM, FEEDING SEPARATING MEDIUM FROM SAID MIXING ZONE INTO A COAL-SEPARATING ZONE, FEEDING RAW COAL TO SAID COAL-SEPARATIG ZONE AND THERE SEPARATING THE COAL FROM THE WASTE BY CAUSING THE COAL TO FLOAT IN THE SEPARATING MEDIUM AND THE WASTE TO SINK THEREIN, SEPARATING A FRACTION OF THE MEDIUM FROM THE COAL AND WASTE BY DRAINING AND RETURNING IT TO SAID MIXING ZONE, SEPARATING ANOTHER FRACTION OF THE MEDIUM FROM ARATING THE COAL FROM THE WASTE BY CAUSING THE COAL TO FROM SAID DILUTE FRACTION AND RETURING THE RECOVERED MAGNETITE TO SAID MIXING ZONE, CONTINUOUSLY MEASURING THE DENSITY OF THE MEDIUM BEING FED TO SAID COAL-SEPARATING ZONE, AND CONTROLLING SAID DENSITY BY ADDING AND SUBTRACTING WATER AND MAGNETITE AUTOMATICALLY IN RESPONSE TO SAID MEASURING.
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) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |