US2570612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for removing the crusts of the cooling elements of a continuously operating crystallizer
Assignee: Werkspoor NV
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Filing: 1948-06-01
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Granted: 1951-10-09
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Expires: 1968-06-01
Abstract
No abstract record available.
Inventors
- 👤 Vahl Laszlo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:57
CPC Classifications
B; B01; B01D; B01D9/00; B01D9/0004; B01D9/0013; B01D9/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A CONTINUOUSLY OPERABLE CRYSTALLIZATION APPARATUS COMPRISING A CONTAINER FOR CRYSTALLIZING LIQUID, A PLURALITY OF HOLLOW DISC-LIKE COOLING ELEMENTS JOURNALLED IN SAID CONTAINER ON A SUBSTANTIALLY HORIZONTAL AXIS FOR ROTATIVE MOVEMENT THROUGH THE LIQUID AND WITH THEIR UPPER PORTIONS ABOVE THE NORMAL LEVEL OF THE CRYSTALLIZING MASS, AND A PLURALITY OF SCRAPER MEMBERS RESPECTIVELY COOPERATIVE WITH SAID COOLING ELEMENTS AND MOUNTED ON SAID CONTAINER ADJACENT THE UPPER PORTIONS OF SAID COOLING ELEMENTS AND FOR MOVEMENT BETWEEN INOPERATIVE POSITIONS BEYOND SAID COOLING ELEMENTS AND OPERATIVE POSITIONS ADJA-
Claim 2
Dependent Claim
85 words
A CONTINUOUSLY OPERABLE CRYSTALLIZATION APPARATUS COMPRISING A CONTAINER FOR CRYSTALLIZING LIQUID, A PLURALITY OF HOLLOW DISC-LIKE COOLING ELEMENTS JOURNALLED IN SAID CONTAINER ON A SUBSTANTIALLY HORIZONTAL AXIS FOR ROTATIVE MOVEMENT THROUGH THE LIQUID AND WITH THEIR UPPER PORTIONS ABOVE THE NORMAL LEVEL OF THE CRYSTALLIZING MASS, AND A PLURALITY OF SCRAPER MEMBERS RESPECTIVELY COOPERATIVE WITH SAID COOLING ELEMENTS AND MOUNTED ON SAID CONTAINER ADJACENT THE UPPER PORTIONS OF SAID COOLING ELEMENTS AND FOR MOVEMENT BETWEEN INOPERATIVE POSITIONS BEYOND SAID COOLING ELEMENTS AND OPERATIVE POSITIONS ADJA-
References Cited (Backward Citations)
US1790544A
Cited
US1430900A
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Cited
US1868406A
Cited
US1755059A
Cited
US2255393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-08 | 1955-04-09 | 1955-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-08 | 1959-04-09 | 1959-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-08 | 1963-04-09 | 1963-10-09 | $7700.00 | Window Closed / Lapsed |