US3873448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic separator
Assignee: Tenneco Chemicals Inc
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Filing: 1973-05-09
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Granted: 1975-03-25
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Expires: 1993-05-09
Abstract
Abstract A magnetic separator is disclosed having particular utility in separating ferromagnetic materials with sizes on the order of microns from viscous fluids having viscosities measured in poises. The separator utilizes a ferromagnetic filter preferably in the form of a bed of ferromagnetic particles through which the fluid is passed and a magnetic field established in the bed transversely to the direction of fluid flow.
Inventors
- 👤 Reuben Albert Isberg
- 👤 Hermas Nelson Beaudet
- 👤 Jr William Harold Avery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:53
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/06; B03; B03C; B03C1/00; B03C1/02; B03C1/025; B03C1/031; B03C1/033; B03C1/0335
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
192 words
A magnetic separator including means defining a chamber having fluid inlet means to said chamber and fluid outlet means from said chamber, a ferromagnetic filter disposed across said chamber between said fluid inlet means and said fluid outlet means, an annular electromagnet having a gap surrounding said chamber adjacent the location of said filter and extending across said chamber transverse to the direction of flow through said filter between said fluid inlet means and said fluid outlet means, a pair of lengthwise radial slots in the inner surface of said electromagnet disposed about one side of said gap, a pair of lengthwise radial slots in the inner surface of said electromagnet disposed on the other side of said gap, and an electromagnetic coil including a winding disposed between said first named pair of radial slots on one side of said electromagnet and a winding disposed between said second named pair of slots on the opposite side of said electromagnet, said windings being connected in opposing polarity whereby when said coil is energized a magnetic field is established across said gap in said filter transverse to said direction of flow through said filter.
Claim 2
Dependent Claim
192 words
A magnetic separator including means defining a chamber having fluid inlet means to said chamber and fluid outlet means from said chamber, a ferromagnetic filter disposed across said chamber between said fluid inlet means and said fluid outlet means, an annular electromagnet having a gap surrounding said chamber adjacent the location of said filter and extending across said chamber transverse to the direction of flow through said filter between said fluid inlet means and said fluid outlet means, a pair of lengthwise radial slots in the inner surface of said electromagnet disposed about one side of said gap, a pair of lengthwise radial slots in the inner surface of said electromagnet disposed on the other side of said gap, and an electromagnetic coil including a winding disposed between said first named pair of radial slots on one side of said electromagnet and a winding disposed between said second named pair of slots on the opposite side of said electromagnet, said windings being connected in opposing polarity whereby when said coil is energized a magnetic field is established across said gap in said filter transverse to said direction of flow through said filter.
Claim 3
Dependent Claim
19 words
A magnetic separator according to claim 1 which further includes means for applying a DC potential across said coil.
Claim 4
Dependent Claim
19 words
A magnetic separator according to claim 1 which further includes means for applying an AC potential across said coil.
Claim 5
Dependent Claim
17 words
A magnetic separator according to claim 1 in which said filter is a bed of ferromagnetic particles.
Claim 6
Dependent Claim
14 words
A magnetic separator according to claim 4 in which saId particles are steel shot.
Claim 7
Dependent Claim
189 words
A magnetic separator including means defining a chamber having fluid inlet means to said chamber and fluid outlet means from said chamber, a ferromagnetic filter disposed across said chamber between said fluid inlet means and said fluid outlet means, an annular electromagnet having a gap surrounding said chamber adjacent the location of said filter and extending across said chamber transverse to the direction of flow through said filter between said fluid inlet means and said fluid outlet means, a plurality of annular laminae, each said lamina including a plurality of radial slots in the inner surface thereof at arcuate intervals thereabout, said laminae being stacked together with said radial slots in registry to define slots extending through said electromagnet, and an electromagnetic coil including a winding disposed between a pair of lengthwise slots on one side of said electromagnet and a winding disposed between a pair of lengthwise slots on the opposite side of said electromagnet, said windings being connected in opposing polarity whereby when said coil is energized a magnetic field is established across said gap in said filter transverse to said direction of flow through said filter.
Claim 8
Dependent Claim
189 words
A magnetic separator including means defining a chamber having fluid inlet means to said chamber and fluid outlet means from said chamber, a ferromagnetic filter disposed across said chamber between said fluid inlet means and said fluid outlet means, an annular electromagnet having a gap surrounding said chamber adjacent the location of said filter and extending across said chamber transverse to the direction of flow through said filter between said fluid inlet means and said fluid outlet means, a plurality of annular laminae, each said lamina including a plurality of radial slots in the inner surface thereof at arcuate intervals thereabout, said laminae being stacked together with said radial slots in registry to define slots extending through said electromagnet, and an electromagnetic coil including a winding disposed between a pair of lengthwise slots on one side of said electromagnet and a winding disposed between a pair of lengthwise slots on the opposite side of said electromagnet, said windings being connected in opposing polarity whereby when said coil is energized a magnetic field is established across said gap in said filter transverse to said direction of flow through said filter.
Claim 9
Dependent Claim
127 words
A magnetic separator according to claim 6 in which said electromagnet includes at least eight said radial slots extending lengthwise through said electromagnet in the inner surface thereof at arcuate intervals thereabout, and in which said coil includes at least two different windings each disposed between a pair of non-adjacent slots on one side of said electromagnet such that said windings overlap, and at least two other windings each disposed between a different pair of non-adjacent slots on the other side of said electromagnets such that said other windings overlap, said windings on said one side being connected to have a common polarity and said other windings on said other side being connected to have a common polarity opposite that of said windings on said one side.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |