Patent US4275033A successfully refreshed from Google Patents.
Patent US2958655A successfully refreshed from Google Patents.
US2958655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for separating finely divided solids
Assignee: Individual
•
Filing: 1957-07-12
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Granted: 1960-11-01
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Expires: 1977-07-12
Abstract
No abstract record available.
Inventors
- 👤 Brown Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:26
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/5281
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
THE METHOD OF SEPARATING FINELY DIVIDED SOLIDS FROM A LIQUID MEDIUM WHICH INCLUDES, INTRODUCING THE FEED MIXTURE CONSISTING OF THE LIQUID MEDIUM AND THE FINELY DIVIDED SOLIDS INTO A VERTICAL COLUMN, INTRODUCING A FLOCCULATING AGENT INTO SAID COLUMN TO ADMIX WITH THE FEED AND EFFECT A FLOCCULATION OF THE SOLIDS, CAUSING THE FLOCCULATED SOLIDS TO MOVE PROGRESSIVELY DOWNWARDLY THROUGH A SERIES OF SHALLOW COMPARTMENT AREAS WHICH ARE FORMED BY SPACED SCREEN ELEMENTS, SAID SOLIDS BEING RETAINED IN EACH COMPARTMENT ONLY FOR A SUFFICIENT LENGTH OF TIME TO PERMIT A LAYER OF SOLIDS TO SETTLE UPON THE SCREEN ELEMENT DEFINING THE LOWER END OF EACH COMPARTMENT, AND SIMULTANEOUSLY FLOWING A WASH LIQUID UPWARDLY WITHIN THE COLUMN IN A COUNTER-CURRENT DIRECTION TO THE DOWNWARDLY MOVING SOLIDS.
Claim 2
Independent Claim
124 words
THE METHOD OF SEPARATING FINELY DIVIDED SOLIDS FROM A LIQUID MEDIUM WHICH INCLUDES, INTRODUCING THE FEED MIXTURE CONSISTING OF THE LIQUID MEDIUM AND THE FINELY DIVIDED SOLIDS INTO A VERTICAL COLUMN, INTRODUCING A FLOCCULATING AGENT INTO SAID COLUMN TO ADMIX WITH THE FEED AND EFFECT A FLOCCULATION OF THE SOLIDS, CAUSING THE FLOCCULATED SOLIDS TO MOVE PROGRESSIVELY DOWNWARDLY THROUGH A SERIES OF SHALLOW COMPARTMENT AREAS WHICH ARE FORMED BY SPACED SCREEN ELEMENTS, SAID SOLIDS BEING RETAINED IN EACH COMPARTMENT ONLY FOR A SUFFICIENT LENGTH OF TIME TO PERMIT A LAYER OF SOLIDS TO SETTLE UPON THE SCREEN ELEMENT DEFINING THE LOWER END OF EACH COMPARTMENT, AND SIMULTANEOUSLY FLOWING A WASH LIQUID UPWARDLY WITHIN THE COLUMN IN A COUNTER-CURRENT DIRECTION TO THE DOWNWARDLY MOVING SOLIDS.
References Cited (Backward Citations)
US2635949A
Cited
US2742381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |