Patent US4679020A successfully refreshed from Google Patents.
US4679020A
Expired / Lapsed
US
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Superconducting solenoid and method of making same
Assignee: Mitsubishi Electric Corp
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Filing: 1986-05-27
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Granted: 1987-07-07
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Expires: 2006-05-27
Abstract
Abstract A superconducting solenoid and a method of making the same in which the density of the current flowing through the windings can be made a sufficiently high level, and in which the size and the production cost of the solenoid can be reduced as much as possible. The superconducting solenoid comprises: a plurality of coil elements each in the form of a pancake laminated one over another in concentric relation with each other; a plurality of spacers formed of an electrically insulating material and interposed between adjacent coil elements for providing electrical insulation and conduits for a cooling medium; and means for assembling together the laminated coil elements and the spacers. Each of the coil elements includes a winding frame in the form of a cylinder, and filamentary conductors wound around the winding frame and then heat treated, and a supporting structure formed of a resinous material impregnated in between the wound filamentary conductors.
Inventors
- 👤 Toshimi Kawamura
- 👤 Takashi Satow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:21
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/048; H01F6/00; H01F6/06; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/88; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
105 words
A superconducting solenoid comprising: a plurality of coil elements each in the form of a pancake laminated one over another in concentric relation with each other, each of said coil elements including a winding frame in the form of a cylinder, and filamentary conductors wound around said winding frame and then heat treated, and a supporting structure formed of a resinous material impregnated in between said wound filamentary conductors; spacer means formed of an electrically insulating material and interposed between adjacent coil elements for providing electrical insulation and conduits for a cooling medium; and means for assembling together said laminated coil elements and said spacers.
Claim 2
Dependent Claim
105 words
A superconducting solenoid comprising: a plurality of coil elements each in the form of a pancake laminated one over another in concentric relation with each other, each of said coil elements including a winding frame in the form of a cylinder, and filamentary conductors wound around said winding frame and then heat treated, and a supporting structure formed of a resinous material impregnated in between said wound filamentary conductors; spacer means formed of an electrically insulating material and interposed between adjacent coil elements for providing electrical insulation and conduits for a cooling medium; and means for assembling together said laminated coil elements and said spacers.
Claim 3
Dependent Claim
26 words
A superconducting solenoid as claimed in claim 1, wherein heat treatment of said filamentary conductors is effected with said filamentary conductors separated from said winding frame.
Claim 4
Dependent Claim
26 words
A superconducting solenoid as claimed in claim 1, wherein heat treatment of said filamentary conductors is effected with said filamentary conductors mounted on said winding frame.
Claim 5
Dependent Claim
28 words
A superconducting solenoid as claimed in claim 1, wherein each of said coil elements is provided at their opposite ends with a pair of flat and smooth surfaces.
Claim 6
Dependent Claim
24 words
A superconducting solenoid as claimed in claim 1, wherein impregnation of said resinous materials is effected by the use of a vacuum-forced impregnation process.
Claim 7
Dependent Claim
85 words
A superconducting solenoid as claimed in claim 1, wherein said means for assembling together said laminated coil elements and said spacer means comprises a pair of end plates disposed on the opposite ends of said laminated coil elements, a plurality of rods each being threaded at its opposite ends and extending through said end plates, and nuts adapted to be threaded on the threaded ends of each of said rods, whereby said laminated coil elements and said spacer means are clamped by said end plates.
Claim 8
Independent Claim
109 words
A method of making a superconducting solenoid comprising the steps of: forming a plurality of coil elements each in the form of a pancake by winding unreacted filamentary conductors around a winding frame in the form of a cylinder, heat-treating the filamentary conductors thus wound, and impregnating a resinous material in between the windings of said filamentary conductors to provide a supporting structure; laminating said coil elements one over another with spacer means of an electrically insulating material interposed between adjacent coil elements for providing electrical insulation and conduits for a cooling medium; and assembling together said laminated coil elements and said spacer means to provide a superconducting solenoid.
Claim 9
Independent Claim
109 words
A method of making a superconducting solenoid comprising the steps of: forming a plurality of coil elements each in the form of a pancake by winding unreacted filamentary conductors around a winding frame in the form of a cylinder, heat-treating the filamentary conductors thus wound, and impregnating a resinous material in between the windings of said filamentary conductors to provide a supporting structure; laminating said coil elements one over another with spacer means of an electrically insulating material interposed between adjacent coil elements for providing electrical insulation and conduits for a cooling medium; and assembling together said laminated coil elements and said spacer means to provide a superconducting solenoid.
Claim 10
Dependent Claim
31 words
A method of making a superconducting solenoid as claimed in claim 7, wherein heat treatment of said wound filamentary conductors is effected with said filamentary conductors separated from said winding frame.
Claim 11
Dependent Claim
31 words
A method of making a superconducting solenoid as claimed in claim 7, wherein heat treatment of said wound filamentary conductors is effected with said filamentary conductors mounted on said winding frame.
Claim 12
Dependent Claim
24 words
A method of making a superconducting solenoid as claimed in claim 7, wherein impregnation of said resinous material is effected by a vacuum-forced impregnation.
References Cited (Backward Citations)
US3227930A
Cited
US3281737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-06 | 1991-01-05 | 1991-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-06 | 1995-01-05 | 1995-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-06 | 1999-01-05 | 1999-07-07 | $7700.00 | Window Closed / Lapsed |