US4395746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for magnetically transporting
Assignee: IHI Corp
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Filing: 1980-04-24
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Granted: 1983-07-26
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Expires: 2000-04-24
Abstract
Abstract A method and device for magnetically transporting finely divided magnetic particles accumulated or deposited at a space. First a DC magnetic field is exerted to the finely divided magnetic particles so as to magnetize and bring them into an easy-to-be-handled state and then revolving alternating fields are exerted to the magnetized, finely divided magnetic particles, thereby magnetically transporting them.
Inventors
- 👤 Hiroto Tanaka
- 👤 Yasumasa Kohno
- 👤 Hideyuki Tanaka
- 👤 Kotaro Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:52
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/24; B; B03; B03C; B03C1/00; B03C1/02; B03C1/23; B03C1/24; B65; B65G; B65G54/00; B65G54/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
97 words
Apparatus for transporting fine particles of which at least a part of magnetizable such as the CRUD particles accumulated in a nuclear reactor, comprising: (a) first magnetic field source means for applying a stationary magnetic field to magnetize the particles prior to transport; and (b) second magnetic field source means comprising a multi-phase generator with a plurality of ring-shapedly formed coils disposed on a cylindrical magnetic core and having a three-quarter full-pitch winding and operative on the particles magnetized by the first magnetic field source means for applying a revolving magnetic field to transport the magnetized particles.
Claim 2
Dependent Claim
97 words
Apparatus for transporting fine particles of which at least a part of magnetizable such as the CRUD particles accumulated in a nuclear reactor, comprising: (a) first magnetic field source means for applying a stationary magnetic field to magnetize the particles prior to transport; and (b) second magnetic field source means comprising a multi-phase generator with a plurality of ring-shapedly formed coils disposed on a cylindrical magnetic core and having a three-quarter full-pitch winding and operative on the particles magnetized by the first magnetic field source means for applying a revolving magnetic field to transport the magnetized particles.
Claim 3
Dependent Claim
32 words
Apparatus according to claim 1 characterized in that the planes of the coils of the multi-phase generator are inclined by an angle of 30° relative to the axis of the cylindrical core.
Claim 4
Dependent Claim
90 words
Apparatus for transporting fine particles of which at least a part of magnetizable such as the CRUD particles accumulated in a nuclear reactor, comprising: (a) a first magnetic field source means comprising a direct current generator having a coil secured to a core rotatable above its axis for applying a stationary magnetic field to magnetize the particles prior to transport; and (b) second magnetic field source means operative on the particles magnetized by the first magnetic field source means for applying a revolving magnetic field to transport the magnetized particles.
Claim 5
Dependent Claim
90 words
Apparatus for transporting fine particles of which at least a part of magnetizable such as the CRUD particles accumulated in a nuclear reactor, comprising: (a) a first magnetic field source means comprising a direct current generator having a coil secured to a core rotatable above its axis for applying a stationary magnetic field to magnetize the particles prior to transport; and (b) second magnetic field source means operative on the particles magnetized by the first magnetic field source means for applying a revolving magnetic field to transport the magnetized particles.
Claim 6
Dependent Claim
22 words
Apparatus according to claim 3 wherein the direct current operator core is rectilinear in axial direction and has an I-shaped cross section.
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) | 1986-07-25 | 1987-01-24 | 1987-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-25 | 1991-01-24 | 1991-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-25 | 1995-01-24 | 1995-07-26 | $7700.00 | Window Closed / Lapsed |