US2793748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of separation employing truncated cyclone
Assignee: Stamicarbon BV
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Filing: 1951-04-24
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Granted: 1957-05-28
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Expires: 1971-04-24
Abstract
No abstract record available.
Inventors
- 👤 Herkenhoff Earl Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:23
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/14; B04C5/16; B04C5/08; B04C5/081
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A CONTINUOUS METHOD OF SEPARATING SOLID PARTICLES OF DIFFERENT SPECIFIC GRAVITIES COMPRISING FEEDING UNDER PRESSURE TANGENTIALLY INTO ONE PORTION OF A CONFINED CIRCULAR SPACE INCLUDING A TRUNCATED CONICAL PORTION, A SUSPENSION IN A LIQUID OF A MASS OF SUCH PARTICLES WHEREBY THE SUSPENSION IS CAUSED TO MOVE IN A CYCLONIC VORTEX WITHIN THE CIRCULAR SPACE OF A VELOCITY PRODUCING CENTRIFULGAL FORCES SUBSTANTIALLY IN EXCESS OF GRAVITY, SAID SUSPENSION INCLUDING PARTICLES OF SUBSTANTIALLY FINER SIZE THAN THE REMAINDER OF THE PARTICLES AND OF A SPECIFIC GRAVITY HIGHER THAN A PREDETERMINED SPECIFIC GRAVITY OF SEPARATION, DISCHARGING THE HEAVIER PARTICLES FROM THE TRUNCATED END OF THE CONICAL SPACE OPPOSITE THE POINT OF INFEED THROUGH A CENTRAL ORIFICE IN A TRANSVERSE FLAT SURFACE AT THE SMALL END OF THE TRUNCATED CONICAL SPACE, DISCHARGING THE LIGHT PARTICLES FROM THE CIRCULAR SPACE THROUGH A SECOND OUTLET ADJACENT THE POINT OF INFEED, THE RELATIVE DIMENSIONS OF THE TRUNCATED CONICAL SPACE BEING WITHIN THE FOLLOWING RATIOS:
Claim 2
Dependent Claim
158 words
A CONTINUOUS METHOD OF SEPARATING SOLID PARTICLES OF DIFFERENT SPECIFIC GRAVITIES COMPRISING FEEDING UNDER PRESSURE TANGENTIALLY INTO ONE PORTION OF A CONFINED CIRCULAR SPACE INCLUDING A TRUNCATED CONICAL PORTION, A SUSPENSION IN A LIQUID OF A MASS OF SUCH PARTICLES WHEREBY THE SUSPENSION IS CAUSED TO MOVE IN A CYCLONIC VORTEX WITHIN THE CIRCULAR SPACE OF A VELOCITY PRODUCING CENTRIFULGAL FORCES SUBSTANTIALLY IN EXCESS OF GRAVITY, SAID SUSPENSION INCLUDING PARTICLES OF SUBSTANTIALLY FINER SIZE THAN THE REMAINDER OF THE PARTICLES AND OF A SPECIFIC GRAVITY HIGHER THAN A PREDETERMINED SPECIFIC GRAVITY OF SEPARATION, DISCHARGING THE HEAVIER PARTICLES FROM THE TRUNCATED END OF THE CONICAL SPACE OPPOSITE THE POINT OF INFEED THROUGH A CENTRAL ORIFICE IN A TRANSVERSE FLAT SURFACE AT THE SMALL END OF THE TRUNCATED CONICAL SPACE, DISCHARGING THE LIGHT PARTICLES FROM THE CIRCULAR SPACE THROUGH A SECOND OUTLET ADJACENT THE POINT OF INFEED, THE RELATIVE DIMENSIONS OF THE TRUNCATED CONICAL SPACE BEING WITHIN THE FOLLOWING RATIOS:
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) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |