Patent US5138326A successfully refreshed from Google Patents.
US5138326A
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Magnetic field generating assembly and method
Assignee: Oxford Instruments Superconductivity Ltd
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Filing: 1989-09-19
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Granted: 1992-08-11
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Expires: 2009-09-19
Abstract
Abstract A magnetic field generating assembly including self-contained modules formed from relatively high temperature superconducting material. A magnetic flux guide, such as a yoke, is positioned relative to the modules so that magnetic flux generated by the modules is coupled into the flux guide.
Inventors
- 👤 Donald Edwards
- 👤 Raymond Tietz
- 👤 Dennis J. Kountz
- 👤 Jeffrey D. Cohen
- 👤 Che-Hsiung Hsu
- 👤 Alan G. A. M. Armstrong
- 👤 Ian L. McDougall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:21
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/28; G01R33/38; G01R33/3806; G01R33/381; G01R33/3815; G01R33/383
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
133 words
A magnetic field generating assembly, comprising: at least one array of magnetic field generating modules of relatively high temperature superconducting material, wherein each of the modules comprises an inner cylinder made of conductive material, an annular cylinder made of conductive material, said annular cylinder substantially surrounding said inner cylinder, and a coil made of relatively high temperature superconducting material and being spirally wound around said inner cylinder between said inner cylinder and said annular cylinder, one end of said coil being electrically connected to said inner cylinder and another end of said coil being electrically connected to said annular cylinder; and a magnetic flux guide positioned relative to the modules so that magnetic flux generated by the modules is coupled into the guide and conveyed to a working volume remote from the modules.
Claim 2
Dependent Claim
133 words
A magnetic field generating assembly, comprising: at least one array of magnetic field generating modules of relatively high temperature superconducting material, wherein each of the modules comprises an inner cylinder made of conductive material, an annular cylinder made of conductive material, said annular cylinder substantially surrounding said inner cylinder, and a coil made of relatively high temperature superconducting material and being spirally wound around said inner cylinder between said inner cylinder and said annular cylinder, one end of said coil being electrically connected to said inner cylinder and another end of said coil being electrically connected to said annular cylinder; and a magnetic flux guide positioned relative to the modules so that magnetic flux generated by the modules is coupled into the guide and conveyed to a working volume remote from the modules.
Claim 3
Dependent Claim
131 words
A magnetic field generating assembly, comprising: an array of magnetic field generating modules, each of said magnetic field generating modules includes a core made of copper, a coil made of a relatively high temperature superconducting material and being wound around said core, and an annular cylinder made of copper, said annular cylinder substantially surrounding said core and said coil, one end of said coil being electrically connected to said core and another end of said coil being electrically connected to said annular cylinder; and a magnetic flux guide positioned relative to said array of said magnetic field generating modules so that magnetic flux generated by said magnetic field generating modules is coupled into said magnetic flux guide and conveyed to a position remote from said array of magnetic field generating modules.
Claim 4
Dependent Claim
131 words
A magnetic field generating assembly, comprising: an array of magnetic field generating modules, each of said magnetic field generating modules includes a core made of copper, a coil made of a relatively high temperature superconducting material and being wound around said core, and an annular cylinder made of copper, said annular cylinder substantially surrounding said core and said coil, one end of said coil being electrically connected to said core and another end of said coil being electrically connected to said annular cylinder; and a magnetic flux guide positioned relative to said array of said magnetic field generating modules so that magnetic flux generated by said magnetic field generating modules is coupled into said magnetic flux guide and conveyed to a position remote from said array of magnetic field generating modules.
Claim 5
Dependent Claim
18 words
An assembly according to claim 1, wherein the magnetic field generated in the working volume is substantially uniform.
Claim 6
Dependent Claim
13 words
An assembly according to claim 1, wherein the assembly comprises a C-shaped magnet.
Claim 7
Dependent Claim
13 words
An assembly according to claim 1, wherein the assembly comprises a pincer magnet.
Claim 8
Dependent Claim
28 words
An assembly according to claim 1, wherein the modules are positioned to enable at least a part of the human body to be positioned within the working volume.
Claim 9
Dependent Claim
16 words
An assembly according to claim 1, wherein the relatively high temperature superconducting material is a ceramic.
Claim 10
Dependent Claim
18 words
An assembly according to claim 2, wherein the magnetic field generated in the working volume is substantially uniform.
Claim 11
Dependent Claim
13 words
An assembly according to claim 2, wherein the assembly comprises a C-shaped magnet.
Claim 12
Dependent Claim
13 words
An assembly according to claim 2, wherein the assembly comprises a pincer magnet.
Claim 13
Dependent Claim
28 words
An assembly according to claim 2, wherein the modules are positioned to enable at least a part of a human body to be positioned within the working volume.
Claim 14
Dependent Claim
16 words
An assembly according to claim 2, wherein the relatively high temperature superconducting material is a ceramic.
References Cited (Backward Citations)
US4190817A
Cited
US4176291A
Cited
US4656447A
Cited
US4694269A
Cited
US4641119A
Cited
US4717437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-11 | 1996-02-10 | 1996-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-11 | 2000-02-10 | 2000-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-11 | 2004-02-10 | 2004-08-11 | $7700.00 | Window Closed / Lapsed |