US3560773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superconducting dynamoelectric machine
Assignee: NAT RES DEV
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Filing: 1967-06-14
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Granted: 1971-02-02
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Expires: 1987-06-14
Abstract
Abstract Disclosed are method and apparatus for generating a current in a superconducting circuit in the form of a loop by moving a bundle of magnetic flux in such a manner that it threads the superconducting loop while being moved in regions containing no magnetically, irreversible material, with the superconducting properties of the loop being maintained throughout.
Inventors
- 👤 Ian Duncan Mcfarlane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:28
CPC Classifications
H; H02; H02K; H02K55/00; Y; Y02; Y02E; Y02E40/00; Y02E40/60
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
120 words
Apparatus for generating a current in a superconducting circuit comprising: a superconducting loop, a tubular body formed from a conducting material and adapted to form part of said superconducting loop; means for rotating said tubular body about an axis passing through a bore therethrough in such a manner that said body maintains the circuit of said superconducting loop while being rotated; means defining at least one hole through the wall of said body; and means for producing a bundle of magnetic flux which passes through said hole whereby when said body is rotated said magnetic flux threads said superconducting loop once for each rotation of said body while yet permitting all of said superconducting loop to maintain its superconducting properties.
Claim 2
Dependent Claim
120 words
Apparatus for generating a current in a superconducting circuit comprising: a superconducting loop, a tubular body formed from a conducting material and adapted to form part of said superconducting loop; means for rotating said tubular body about an axis passing through a bore therethrough in such a manner that said body maintains the circuit of said superconducting loop while being rotated; means defining at least one hole through the wall of said body; and means for producing a bundle of magnetic flux which passes through said hole whereby when said body is rotated said magnetic flux threads said superconducting loop once for each rotation of said body while yet permitting all of said superconducting loop to maintain its superconducting properties.
Claim 3
Dependent Claim
16 words
Apparatus according to claim 1 wherein said tubular body is comprised by a hollow cylindrical member.
Claim 4
Dependent Claim
40 words
Apparatus according to claim 2 further including annular conducting supports wherein said hollow cylindrical body is disposed between said annular conducting supports, and electrically conducting bearings being disposed between said supports and the end faces of said hollow cylindrical body.
Claim 5
Dependent Claim
20 words
Apparatus according to claim 3 wherein said two supports are connected with leads which form part of said superconducting loop.
Claim 6
Dependent Claim
36 words
Apparatus according to claim 1 wherein each said hole in the wall of said hollow body forms a housing for a permanent magnet, which constitutes said means for providing a bundle of magnetic fluxes passing therethrough.
Claim 7
Dependent Claim
36 words
Apparatus according to claim 1 wherein each said hole has a permanent current flowing around the periphery thereof on the surface of the superconducting material bounding the hole whereby the hole behaves as a permanent magnet.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |