US3133015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for separating magnetic susceptible particles
Assignee: Research Cottrell Inc
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Filing: 1961-02-13
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Granted: 1964-05-12
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Expires: 1981-02-13
Abstract
No abstract record available.
Inventors
- 👤 Patrick E Cavanagh
- 👤 Carl W Hedberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:23
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A MAGNETIC SEPARATOR FOR AIR SUSPENDED PARTICLES COMPRISING A FIRST CYLINDRICAL DRUM, MEANS AXIALLY MOUNTING SAID DRUM FOR ROTATION IN A GENERALLY HORIZONTAL PLANE, MEANS FOR ROTATING SAID DRUM ABOUT THE AXIAL MOUNTING, A SECOND CYLINDRICAL DRUM HAVING A DIAMETER LESS THAN THE DIAMETER OF THE SAID FIRST DRUM, A PLURALITY OF PERMANENT MAGNETS SECURED TO THE OUTER SURFACE OF SAID SECOND CYLINDRICAL DRUM IN ADJACENT RIGHT AND LEFT HAND ARRAYS OF HELLICAL SEGMENTS, MEANS FOR MOUNTING SAID SECOND CYLINDRICAL DRUM FOR ROTATION WITHIN SAID FIRST CYLINDRICAL DRUM, MEANS FOR ROTATING SAID SECOND CYLINDRICAL DRUM TO PROVIDE A DIFFERENTIAL SPEED BETWEEN THE FIRST AND SECOND DRUMS, MEANS FOR DIRECTING AIR SUSPENDED PARTICULATE MATERIAL INCLUDING MAGNETIC SUSCEPTIBLE PARTICLES TO THE OUTER SURFACE OF SAID FIRST CYLINDRICAL DRUM, MEANS FOR COLLECTING MAGNETIC SUSCEPTIBLE PARTICLES ADJACNT THE EDGES OF SAID FIRST CYLINDRICAL DRUM WHERE THE ATTRACTIVE FORCE OF THE MAGNETIC FIELD IS REDUCED, AND MEANS ADJACENT SAID COLLECTION ZONE FOR DIRECTING A STREAM OF PRESSURE FLUID IN A DIRECTION OPPOSITE THE DIRECTION OF TRAVEL OF THE MAGNETIC SUSCEPTIBLE PARTICLES.
Claim 2
Dependent Claim
176 words
A MAGNETIC SEPARATOR FOR AIR SUSPENDED PARTICLES COMPRISING A FIRST CYLINDRICAL DRUM, MEANS AXIALLY MOUNTING SAID DRUM FOR ROTATION IN A GENERALLY HORIZONTAL PLANE, MEANS FOR ROTATING SAID DRUM ABOUT THE AXIAL MOUNTING, A SECOND CYLINDRICAL DRUM HAVING A DIAMETER LESS THAN THE DIAMETER OF THE SAID FIRST DRUM, A PLURALITY OF PERMANENT MAGNETS SECURED TO THE OUTER SURFACE OF SAID SECOND CYLINDRICAL DRUM IN ADJACENT RIGHT AND LEFT HAND ARRAYS OF HELLICAL SEGMENTS, MEANS FOR MOUNTING SAID SECOND CYLINDRICAL DRUM FOR ROTATION WITHIN SAID FIRST CYLINDRICAL DRUM, MEANS FOR ROTATING SAID SECOND CYLINDRICAL DRUM TO PROVIDE A DIFFERENTIAL SPEED BETWEEN THE FIRST AND SECOND DRUMS, MEANS FOR DIRECTING AIR SUSPENDED PARTICULATE MATERIAL INCLUDING MAGNETIC SUSCEPTIBLE PARTICLES TO THE OUTER SURFACE OF SAID FIRST CYLINDRICAL DRUM, MEANS FOR COLLECTING MAGNETIC SUSCEPTIBLE PARTICLES ADJACNT THE EDGES OF SAID FIRST CYLINDRICAL DRUM WHERE THE ATTRACTIVE FORCE OF THE MAGNETIC FIELD IS REDUCED, AND MEANS ADJACENT SAID COLLECTION ZONE FOR DIRECTING A STREAM OF PRESSURE FLUID IN A DIRECTION OPPOSITE THE DIRECTION OF TRAVEL OF THE MAGNETIC SUSCEPTIBLE PARTICLES.
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) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |