Patent US2552524A successfully refreshed from Google Patents.
US2552524A
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US
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Apparatus for extracting liquid to form a concentrate
Assignee: COMMONWEATLTH ENGINEERING Co OF OHIO
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Filing: 1948-07-01
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Granted: 1951-05-15
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Expires: 1968-07-01
Abstract
No abstract record available.
Inventors
- 👤 George L Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:17
CPC Classifications
A; A23; A23L; A23L2/00; A23L2/02; A23L2/08; A23L2/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN COMBINATION IN AN APPARATUS FOR EXTRACTING WATER FROM A SOLUTION OF WATER AND SOLIDS COMPRISING MEANS FOR CONVEYING A SOLUTION; MEANS FOR PROGRESSIVELY DECREASING THE TEMPERATURE OF THE SOLUTION THROUGH A SERIES OF TEMPERATURE CHANGES TO CAUSE FREEZING OF THE WATER IN THE SOLUTION BY STAGES IN SEPARATE BODIES; MEANS OF MOVING ICE CRYSTALS SO FORMED IN A COUNTERFLOW DIRECTION FROM STAGE TO STAGE; MEANS OF SCREENING THE CRYSTALS AS THEY ARE MOVED STEP BY STEP UPSTREAM FROM EACH STAGE OF FREEZING; MEANS OF EXTRACTING THE MOTHER LIQUOR FROM THE CRYSTALS AS THEY ARE DISCHARGED FROM THE UPSTREAM END; AND MEANS OF RETURNING THE LIQUOR FREE OF CRYSTALS TO THE UPSTREAM END.
Claim 2
Dependent Claim
113 words
IN COMBINATION IN AN APPARATUS FOR EXTRACTING WATER FROM A SOLUTION OF WATER AND SOLIDS COMPRISING MEANS FOR CONVEYING A SOLUTION; MEANS FOR PROGRESSIVELY DECREASING THE TEMPERATURE OF THE SOLUTION THROUGH A SERIES OF TEMPERATURE CHANGES TO CAUSE FREEZING OF THE WATER IN THE SOLUTION BY STAGES IN SEPARATE BODIES; MEANS OF MOVING ICE CRYSTALS SO FORMED IN A COUNTERFLOW DIRECTION FROM STAGE TO STAGE; MEANS OF SCREENING THE CRYSTALS AS THEY ARE MOVED STEP BY STEP UPSTREAM FROM EACH STAGE OF FREEZING; MEANS OF EXTRACTING THE MOTHER LIQUOR FROM THE CRYSTALS AS THEY ARE DISCHARGED FROM THE UPSTREAM END; AND MEANS OF RETURNING THE LIQUOR FREE OF CRYSTALS TO THE UPSTREAM END.
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) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |