US3876823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical conductor made up of individual superconducting conductors
Assignee: Siemens AG
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Filing: 1974-02-11
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Granted: 1975-04-08
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Expires: 1994-02-11
Abstract
Abstract An electrical conductor which is particularly useful in the transmission of three-phase current, and which comprises an inner conductor made up of a plurality of individual super-conducting conductors arranged in several layers and an outer conductor also made up of a plurality of individual superconducting conductors, surrounding the inner conductor concentrically and spaced therefrom, in which at least the individual conductors of the inner conductor are of an elliptical cross section with their major axes perpendicular to radials of the inner conductor to result in a conductor having a-c losses which are relatively small.
Inventors
- 👤 Peter Penczynski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:00
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/30; H01B12/00; H01B12/02; H01B12/08; H10; H10N; H10N60/00; H10N60/20; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/884; Y10S505/887
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
76 words
An electrical conductor which is particularly suited for the transmission of three phase current and is of the type comprising an inner conductor made up of individual superconducting conductors arranged in a plurality of layers and an outer conductor of individual superconducting conductors surrounding said inner conductor concentrically, wherein the improvement comprises: a. individual conductors of the inner conductor being of an elliptical cross section with their major axes perpendicular to radials of the inner conductor.
Claim 2
Dependent Claim
76 words
An electrical conductor which is particularly suited for the transmission of three phase current and is of the type comprising an inner conductor made up of individual superconducting conductors arranged in a plurality of layers and an outer conductor of individual superconducting conductors surrounding said inner conductor concentrically, wherein the improvement comprises: a. individual conductors of the inner conductor being of an elliptical cross section with their major axes perpendicular to radials of the inner conductor.
Claim 3
Dependent Claim
32 words
An electrical conductor according to claim 1 wherein the ratio of the major to the minor axes of the elliptical cross section of the individual conductors is at least equal to three.
Claim 4
Dependent Claim
52 words
An electrical conductor according to claim 2 wherein for a given radius R.sub.I of the inner conductor, a given eccentricity, sin .alpha. of the individual conductors, and for a given number m of individual conductors, the major half-axis of the cross section of each individual conductor designated a fulfills the following equation:
Claim 5
Dependent Claim
24 words
An electrical conductor according to claim 1 wherein the individual conductors each comprise a core of high purity aluminum with a coating of niobium.
Claim 6
Dependent Claim
24 words
An electrical conductor according to claim 2 wherein the individual conductors each comprise a core of high purity aluminum with a coating of niobium.
Claim 7
Dependent Claim
24 words
An electrical conductor according to claim 3 wherein the individual conductors each comprise a core of high purity aluminum with a coating of niobium.
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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |