US2724503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocyclone apparatus
Assignee: Stamicarbon BV
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Filing: 1952-12-30
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Granted: 1955-11-22
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Expires: 1972-12-30
Abstract
No abstract record available.
Inventors
- 👤 Freerk J Fontein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:35
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/12; B04C5/08; B04C5/081; B04C5/14; B04C5/24; B04C5/26; B22; B22F; B22F3/00; B22F3/12; B22F3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
224 words
A HYDROCYCLONE APPARATUS FOR SEPARATING SUSPENDED SOLIDS OF DIVERSE SIZE AND SPECIFIC GRAVITY ACCORDING TO SPECIFIC GRAVITY, COMPRISING A FIRST HYDROCYCLONE AND A SECOND HYDROCYCLONE, EACH OF SAID HYDROCYCLONES INCLUDING A CIRCULAR CHAMBER OF DIMINISHING DIAMETER SUCH THAT THE TAPERED PORTION THEREOF DEFINES AN INCLUDED ANGLE WITHIN THE RANGE OF FROM 50* TO 90*, AN AXIAL DISCHARGE APERTURE AT EACH END OF SAID CHAMBER, A VORTEX FINDER EXTENDING FROM THE WIDE END OF SAID CHAMBER THEREINTO, AND A TANGENTIAL FEED DUCT COMMUNICATING WITH THE WIDE END OF SAID CHAMBER, THE FIRST HYDROCYCLONE INCLUDING A SECOND VORTEX FINDER COAXIALLY ARRANGED WITH THE FIRST VORTEX FINDER OF SAID FIRST HYDROCYCLONE, THE DIAMETER OF SAID SECOND VORTEX FINDER BEING WITHIN THE RANGE OF FROM 50% TO 80% OF THE DIAMETER OF SAID FIRST VORTEX FINDER, THE DIAMETER OF THE APEX APERTURE OF SAID FIRST HYDROCYCLONE NOT EXCEEDING 60% OF THE DIAMETER OF SAID FIRST VORTEX FINDER THEREOF, THE DIAMETER OF THE APEX APERTURE OF SAID SECOND HYDROCYCLONE NOT EXCEEDING 70% OF THE DIAMETER OF THE VORTEX FINDER THEREOF, MEANS FOR SUPPLYING SUSPENSION UNDER PRESSURE TO THE FEED DUCT OF SAID FIRST HYDROCYCLONE, A CLOSED COMMUNICATION DUCT BETWEEN THE FIRST VORTEX FINDER OF SAID FIRST HYDROCYCLONE AND THE FEED DUCT OF SAID SECOND HYDROCYCLONE, AND DISTINCT COMMUNICATION MEANS LEADING FROM THE SECOND VORTEX FINDER OF SAID FIRST HYDROCYCLONE.
Claim 2
Dependent Claim
224 words
A HYDROCYCLONE APPARATUS FOR SEPARATING SUSPENDED SOLIDS OF DIVERSE SIZE AND SPECIFIC GRAVITY ACCORDING TO SPECIFIC GRAVITY, COMPRISING A FIRST HYDROCYCLONE AND A SECOND HYDROCYCLONE, EACH OF SAID HYDROCYCLONES INCLUDING A CIRCULAR CHAMBER OF DIMINISHING DIAMETER SUCH THAT THE TAPERED PORTION THEREOF DEFINES AN INCLUDED ANGLE WITHIN THE RANGE OF FROM 50* TO 90*, AN AXIAL DISCHARGE APERTURE AT EACH END OF SAID CHAMBER, A VORTEX FINDER EXTENDING FROM THE WIDE END OF SAID CHAMBER THEREINTO, AND A TANGENTIAL FEED DUCT COMMUNICATING WITH THE WIDE END OF SAID CHAMBER, THE FIRST HYDROCYCLONE INCLUDING A SECOND VORTEX FINDER COAXIALLY ARRANGED WITH THE FIRST VORTEX FINDER OF SAID FIRST HYDROCYCLONE, THE DIAMETER OF SAID SECOND VORTEX FINDER BEING WITHIN THE RANGE OF FROM 50% TO 80% OF THE DIAMETER OF SAID FIRST VORTEX FINDER, THE DIAMETER OF THE APEX APERTURE OF SAID FIRST HYDROCYCLONE NOT EXCEEDING 60% OF THE DIAMETER OF SAID FIRST VORTEX FINDER THEREOF, THE DIAMETER OF THE APEX APERTURE OF SAID SECOND HYDROCYCLONE NOT EXCEEDING 70% OF THE DIAMETER OF THE VORTEX FINDER THEREOF, MEANS FOR SUPPLYING SUSPENSION UNDER PRESSURE TO THE FEED DUCT OF SAID FIRST HYDROCYCLONE, A CLOSED COMMUNICATION DUCT BETWEEN THE FIRST VORTEX FINDER OF SAID FIRST HYDROCYCLONE AND THE FEED DUCT OF SAID SECOND HYDROCYCLONE, AND DISTINCT COMMUNICATION MEANS LEADING FROM THE SECOND VORTEX FINDER OF SAID FIRST HYDROCYCLONE.
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) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |