US2748941A
Expired / Lapsed
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⏱️ 0.0 years remaining
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Assignee: Stamicarbon BV
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Filing: 1954-12-14
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Granted: 1956-06-05
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Expires: 1974-12-14
Abstract
No abstract record available.
Inventors
- 👤 Freerk J Fontein
- 👤 Albert T Basten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:02
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/60; B07; B07B; B07B1/00; B07B1/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
APPARATUS FOR WET SCREENING COMPRISING A NON-CONTINUOUS CYLINDRICALLY CURVED SCREENING DECK, MEANS FOR FEEDING LIQUID AND A MIXTURE OF PARTICLES TO BE SEPARATED ALONG A TANGENTIAL PATH TO THE CONCAVE SIDE OF SAID SCREENING DECK, MEANS DISPOSED ON THE CONVEX SIDE OF SAID SCREENING DECK FOR COLLECTING AN UNDERSIZE FRACTION OF SAID PARTICLES, AND MEANS FOR COLLECTING AN OVERSIZE FRACTION ISSUING TANGENTIALLY FROM THE DISCHARGE END OF SAID SCREENING DECK, SAID SCREEING DECK BEING MOUNTED FOR MOVEMENT BETWEEN A FIRST POSITION WHEREIN ONE END THEREOF SERVES AS A FEED END AND A SECOND POSITION WHEREIN THE OPPOSITE END SERVES AS A FED END, SAID OVERFLOW FRACTION COLLECTING MEANS INCLUDING PORTIONS SPACED ON OPPOSITE SIDES OF THE PLANE OF PATH OF TANGENTIAL FEED TO THE SCREENING DECK, EACH OF SAID PORTIONS BEING ARRANGED TO RECEIVE THE OVERFLOW FRACTION ISSUING FROM SAID SCREENING DECK IN ONE OF SAID POSITIONS.
Claim 2
Dependent Claim
147 words
APPARATUS FOR WET SCREENING COMPRISING A NON-CONTINUOUS CYLINDRICALLY CURVED SCREENING DECK, MEANS FOR FEEDING LIQUID AND A MIXTURE OF PARTICLES TO BE SEPARATED ALONG A TANGENTIAL PATH TO THE CONCAVE SIDE OF SAID SCREENING DECK, MEANS DISPOSED ON THE CONVEX SIDE OF SAID SCREENING DECK FOR COLLECTING AN UNDERSIZE FRACTION OF SAID PARTICLES, AND MEANS FOR COLLECTING AN OVERSIZE FRACTION ISSUING TANGENTIALLY FROM THE DISCHARGE END OF SAID SCREENING DECK, SAID SCREEING DECK BEING MOUNTED FOR MOVEMENT BETWEEN A FIRST POSITION WHEREIN ONE END THEREOF SERVES AS A FEED END AND A SECOND POSITION WHEREIN THE OPPOSITE END SERVES AS A FED END, SAID OVERFLOW FRACTION COLLECTING MEANS INCLUDING PORTIONS SPACED ON OPPOSITE SIDES OF THE PLANE OF PATH OF TANGENTIAL FEED TO THE SCREENING DECK, EACH OF SAID PORTIONS BEING ARRANGED TO RECEIVE THE OVERFLOW FRACTION ISSUING FROM SAID SCREENING DECK IN ONE OF SAID POSITIONS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |