US4687418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for making a fluid having electrical conductivity flow
Assignee: Hitachi Ltd
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Filing: 1985-07-19
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Granted: 1987-08-18
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Expires: 2005-07-19
Abstract
Abstract A device for flowing a fluid having electrical conductivity comprises a plurality of fluid passages annularly arranged such that electric current can flow across the adjacent passages and a magnetic field generating means for generating a magnetic flux crossing the plurality of passages in radial direction. The electric current induced by making the electrically conductive fluid flow in part of the fluid passages is caused to flow in loop through all the fluid passages. The electrically conductive fluid existing in the remaining fluid passages is caused to flow by the induced current and the magnetic flux produced in the magnetic field generating means, in synchronism with the flow of the fluid flowing through said part of the fluid passages.
Inventors
- 👤 Tadashi Gotou
- 👤 Hisashi Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:11
CPC Classifications
H; H02; H02K; H02K44/00; H02K44/02; H02K44/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
83 words
A device for making a fluid having electrical conductivity flow, the device comprising a plurality of fluid passages annularly arranged such that electric current flows across the adjacent passages, and a magnetic field generating means for generating magnetic flux crossing said plurality of fluid passages in a radial direction, a plurality of partitioning plate means are provided for axially dividing an annular fluid passage into said plurality of fluid passages, and wherein each of said partitioning plate means have a corrugated cross section.
Claim 2
Independent Claim
83 words
A device for making a fluid having electrical conductivity flow, the device comprising a plurality of fluid passages annularly arranged such that electric current flows across the adjacent passages, and a magnetic field generating means for generating magnetic flux crossing said plurality of fluid passages in a radial direction, a plurality of partitioning plate means are provided for axially dividing an annular fluid passage into said plurality of fluid passages, and wherein each of said partitioning plate means have a corrugated cross section.
Claim 3
Independent Claim
107 words
A device for making a fluid having electrical conductivity flow, the device comprising a plurality of fluid passages annularly arranged such that electric current flows across adjacent passages, and a magnetic field generating means for generating magnetic flux crossing said plurality of fluid passages in a radial direction, and wherein said magnetic field generating means comprises a magnetic material member disposed at one of a center side and an outer peripheral side of said plurality of fluid passages, and a plurality of magnets disposed at the other side, said plurality of magnets being connected in series such that the polarities of the adjacent magnets are the same.
Claim 4
Independent Claim
107 words
A device for making a fluid having electrical conductivity flow, the device comprising a plurality of fluid passages annularly arranged such that electric current flows across adjacent passages, and a magnetic field generating means for generating magnetic flux crossing said plurality of fluid passages in a radial direction, and wherein said magnetic field generating means comprises a magnetic material member disposed at one of a center side and an outer peripheral side of said plurality of fluid passages, and a plurality of magnets disposed at the other side, said plurality of magnets being connected in series such that the polarities of the adjacent magnets are the same.
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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) | 1990-08-17 | 1991-02-16 | 1991-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-17 | 1995-02-16 | 1995-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-17 | 1999-02-16 | 1999-08-18 | $7700.00 | Window Closed / Lapsed |