Patent US3244281A successfully refreshed from Google Patents.
US3244281A
Expired / Lapsed
US
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Process for separating solids from suspensions
Assignee: Wacker Chemie AG
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Filing: 1961-10-17
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Granted: 1966-04-05
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Expires: 1981-10-17
Abstract
No abstract record available.
Inventors
- 👤 Kurz Eduard
- 👤 Reinecke Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:23
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/44; B01D33/46; B01D33/466; B01D33/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN A PROCESS FOR SEPARATING SOLIDS OF VERY SMALL PARTICLE SIZE FROM A SUSPENSION THEREOF IN A LIQUID BY USING A DRUM FILTER MOUNTED FOR ROTATION IN A TROUG CONTAINING SUCH SUSPENSION, THE STEPS OF ROTATING SUCH DRUM FILTER WHILE APPLYING SUCTION TO THE INTERIOR OF THE FILTER WHEREBY A THIN FILTER CAKE ACCUMULATES ON THE OUTER PERIPHERY OF SAID FILTER DRUM, ALLOWING SAID FILTER CAKE TO BUILD UP TO A THICKNESS OF 0.1-5 MM., LOOSENING SAID BUILT-UP FILTER CAKE BY APPLYING FROM THE INSIDE OF SAID FILTER DRUM COMTHE OUTER SURFACE OF THE LOOSENED CAKE BY COMPRESSED AIR DIRECTED TOWARD THE OUTSIDE OF SAID FILTER DRUM
Claim 2
Dependent Claim
107 words
IN A PROCESS FOR SEPARATING SOLIDS OF VERY SMALL PARTICLE SIZE FROM A SUSPENSION THEREOF IN A LIQUID BY USING A DRUM FILTER MOUNTED FOR ROTATION IN A TROUG CONTAINING SUCH SUSPENSION, THE STEPS OF ROTATING SUCH DRUM FILTER WHILE APPLYING SUCTION TO THE INTERIOR OF THE FILTER WHEREBY A THIN FILTER CAKE ACCUMULATES ON THE OUTER PERIPHERY OF SAID FILTER DRUM, ALLOWING SAID FILTER CAKE TO BUILD UP TO A THICKNESS OF 0.1-5 MM., LOOSENING SAID BUILT-UP FILTER CAKE BY APPLYING FROM THE INSIDE OF SAID FILTER DRUM COMTHE OUTER SURFACE OF THE LOOSENED CAKE BY COMPRESSED AIR DIRECTED TOWARD THE OUTSIDE OF SAID FILTER DRUM
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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |