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US4079187A
Expired / Lapsed
US
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Superconductor
Assignee: BBC Brown Boveri AG Switzerland
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Filing: 1976-12-15
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Granted: 1978-03-14
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Expires: 1996-12-15
Abstract
Abstract A plurality of superconductive wires form a cable. In each wire a number of filaments of superconductive material are embedded in a matrix of normal electrically conductive material. The individual wires are connected by a thermally conductive joining medium whose melting point lies below that of the matrix and whose tensile and/or shear strength at the operating temperature of the superconductor is substantially equal to or greater than that of the matrix.
Inventors
- 👤 Harald Fillunger
- 👤 Alfred Koch
- 👤 Reinhard Kurt Maix
- 👤 Gundolf Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:02
CPC Classifications
H; H01; H01B; H01B12/00; H01B12/02; H01F; H01F27/00; H01F27/28; H01F27/2804; H01F27/2819; H01F6/00; H01F6/06; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/884; Y10S505/887
Claims Analysis
Total Claims: 48
Claim 1
Independent Claim
104 words
A superconductor, comprising a plurality of superconductive wires forming a cable, each of said wires having a plurality of superconductive filaments and a matrix of normal electrically conductive material, the plurality of filaments in each of said wires being imbedded in the matrix of each of the wires, supporting means for supporting and strengthing the cable, said supporting means for supporting and strengthening cables including a thermally conductive joining medium connecting the individual wires and having a melting point below that of the matrix and a shear and/or tensile strength at the superconductor operating temperature substantially equal or greater than that of the matrix.
Claim 2
Dependent Claim
104 words
A superconductor, comprising a plurality of superconductive wires forming a cable, each of said wires having a plurality of superconductive filaments and a matrix of normal electrically conductive material, the plurality of filaments in each of said wires being imbedded in the matrix of each of the wires, supporting means for supporting and strengthing the cable, said supporting means for supporting and strengthening cables including a thermally conductive joining medium connecting the individual wires and having a melting point below that of the matrix and a shear and/or tensile strength at the superconductor operating temperature substantially equal or greater than that of the matrix.
Claim 3
Dependent Claim
28 words
A superconductor as in claim 1, wherein the joining medium is a hard solder or spelter with a melting point in the range of 550° to 780° C.
Claim 4
Dependent Claim
15 words
A superconductor as in claim 2, wherein the joining medium is a copper-silver hard solder.
Claim 5
Dependent Claim
39 words
A superconductor as in claim 1, wherein the joining medium exhibits a melting point and a processing time for the uniting of the wires of the cable within a range to maintain the superconductive characteristics of the superconductive filaments.
Claim 6
Dependent Claim
39 words
A superconductor as in claim 2, wherein, the joining medium exhibits a melting point and a processing time for the uniting of the wires of the cable within a range to maintain the superconductive characteristics of the superconductive filaments.
Claim 7
Dependent Claim
39 words
A superconductor as in claim 3, wherein, the joining medium exhibits a melting point and a processing time for the uniting of the wires of the cable within a range to maintain the superconductive characteristics of the superconductive filaments.
Claim 8
Dependent Claim
35 words
A superconductor as in claim 1, wherein said support means includes a cooling tube extending along the cable formed by the wires and in thermally conductive connection with the wires for conducting a cooling medium.
Claim 9
Dependent Claim
35 words
A superconductor as in claim 2, wherein, said support means includes a cooling tube extending along the cable formed by the wires and in thermally conductive connection with the wires for conducting a cooling medium.
Claim 10
Dependent Claim
35 words
A superconductor as in claim 3, wherein said support means includes a cooling tube extending along the cable formed by the wires and in thermally conductive connection with the wires for conducting a cooling medium.
Claim 11
Dependent Claim
35 words
A superconductor as in claim 4, wherein, said support means includes a cooling tube extending along the cable formed by the wires and in thermally conductive connection with the wires for conducting a cooling medium.
Claim 12
Dependent Claim
13 words
A superconductor as in claim 7, wherein the cable encloses the cooling tube.
Claim 13
Dependent Claim
13 words
A superconductor as in claim 4, wherein the cable encloses the cooling tube.
Claim 14
Dependent Claim
32 words
A superconductor as in claim 1, wherein said supporting means includes stabilizing means for electrically stabilizing the cable and including electrically highly conductive material extending along the cable containing the superconductive wires.
Claim 15
Dependent Claim
32 words
A superconductor as in claim 4, wherein, said supporting means includes stabilizing means for electrically stabilizing the cable and including electrically highly conductive material extending along the cable containing the superconductive wires.
Claim 16
Dependent Claim
41 words
A superconductor as in claim 1, wherein said supporting means includes reinforcing means extending along the cable for increasing the tensile strength of the superconductor, said supporting means having a tensile strength at least 50% higher than that of the matrix.
Claim 17
Dependent Claim
41 words
A superconductor as in claim 4, wherein said supporting means includes reinforcing means extending along the cable for increasing the tensile strength of the superconductor, said supporting means having a tensile strength at least 50% higher than that of the matrix.
Claim 18
Dependent Claim
40 words
A superconductor as in claim 7, wherein, said supporting means includes reinforcing means extending the cable for increasing the tensile strength of the superconductor, said supporting means having a tensile strength at least 50% higher than that of the matrix.
Claim 19
Dependent Claim
40 words
A superconductor as in claim 11, wherein said supporting means includes reinforcing means extending the cable for increasing the tensile strength of the superconductor, said supporting means having a tensile strength at least 50% higher than that of the matrix.
Claim 20
Dependent Claim
41 words
A superconductor as in claim 13, wherein said supporting means includes reinforcing means extending along the cable for increasing the tensile strength of the superconductor, said supporting means having a tensile strength at least 50% higher than that of the matrix.
Claim 21
Dependent Claim
16 words
A superconductor as in claim 1, wherein the matrix of the superconductive wires includes reinforcing material.
Claim 22
Dependent Claim
16 words
A superconductor as in claim 1, wherein said matrix of the superconductive wires includes stabilizing material.
Claim 23
Dependent Claim
15 words
A superconductor as in claim 21, wherein the reinforcing material is embedded in the matrix.
Claim 24
Dependent Claim
16 words
A superconductor as in claim 22, wherein the reinforcing material is metallurgically bonded to the matrix.
Claim 25
Dependent Claim
29 words
A superconductor as in claim 1, wherein the cable further includes at least one of a stabilizing and reinforcing wire extending parallel with the longitudinal axis of the cable.
Claim 26
Dependent Claim
29 words
A superconductor as in claim 4, wherein the cable further includes at least one of a stabilizing and reinforcing wire extending parallel with the longitudinal axis of the cable.
Claim 27
Dependent Claim
29 words
A superconductor as in claim 7, wherein the cable further includes at least one of a stabilizing and reinforcing wire extending parallel with the longitudinal axis of the cable.
Claim 28
Dependent Claim
29 words
A superconductor as in claim 13, wherein the cable further includes at least one of a stabilizing and reinforcing wire extending parallel with the longitudinal axis of the cable.
Claim 29
Dependent Claim
29 words
A superconductor as in claim 15, wherein the cable further includes at least one of a stabilizing and reinforcing wire extending parallel with the longitudinal axis of the cable.
Claim 30
Dependent Claim
24 words
A superconductor as in claim 1, wherein the wires forming the cable are juxtapositioned in one of a cabled, stranded, braided, and/or transposed relationship.
Claim 31
Dependent Claim
24 words
A superconductor as in claim 19, wherein the wires forming the cable are juxtapositioned in one of a cabled, stranded, braided, and/or transposed relationship.
Claim 32
Dependent Claim
24 words
A superconductor as in claim 24, wherein the wires forming the cable are juxtapositioned in one of a cabled, stranded, braided, and/or transposed relationship.
Claim 33
Dependent Claim
27 words
A superconductor as in accordance with claim 1, wherein said support means includes a support structure and is hard-soldered to the adjacent parts of the supporting structure.
Claim 34
Dependent Claim
23 words
A superconductor as in claim 1, wherein the melting temperature of the bonding material is higher than the temperature of the reaction heating.
Claim 35
Dependent Claim
16 words
A superconductor as in claim 1, wherein said cable includes a high-resistance layer surrounding superconductive wires.
Claim 36
Dependent Claim
17 words
A superconductor as in claim 1, wherein said cable includes a high resistance layer surrounding the filaments.
Claim 37
Dependent Claim
21 words
A superconductor as in claim 11, wherein the stabilizing material includes a plurality of wires separated by a high resistance layer.
Claim 38
Dependent Claim
15 words
A superconductor as in claim 34, wherein the high resistance layer is a copper-nickel alloy.
Claim 39
Dependent Claim
15 words
A superconductor as in claim 36, wherein the high resistance layer is a copper-nickel alloy.
Claim 40
Dependent Claim
16 words
A superconductor as in claim 1, wherein the superconductive material consists of an intermetallic A15 compound.
Claim 41
Dependent Claim
23 words
A superconductor as in claim 39, wherein the compound consists of one of Nb c Sn, V 3 Ga or V 3 Si.
Claim 42
Dependent Claim
27 words
A superconductor as in claim 15, wherein the reinforcing material consists of alloy steel, or an alloy based upon or consisting of copper-aluminum, copper-gallium, copper-tin or copper-nickel.
Claim 43
Dependent Claim
23 words
A superconductor as in claim 15, wherein the reinforcing material includes an alloy having a compound consisting of copper-aluminum, copper-gallium, copper-tin or copper-nickel.
Claim 44
Dependent Claim
17 words
A superconductor as in claim 15, wherein the reinforcing material consists of copper-aluminum, copper-gallium, copper-tin or copper-nickel.
Claim 45
Dependent Claim
27 words
A superconductor as in claim 1, wherein the superconductor includes a neutral surface and the cable is concentric about the neutral surface of the superconductor when bent.
Claim 46
Dependent Claim
41 words
A superconductor as in claim 1, wherein the cross section and the nature of the reinforcing material are such that during the construction, processing and operation of the superconductor the superconductive filaments are subjected to an extension of 0.2% or less.
Claim 47
Dependent Claim
32 words
A superconductor as in claim 7, wherein said supporting means includes stabilizing means for electrically stabilizing the cable and including electrically highly conductive material extending along the cable containing the superconductive wires.
Claim 48
Dependent Claim
32 words
A superconductor as in claim 11, wherein said supporting means includes stabilizing means for electrically stabilizing the cable and including electrically highly conductive material extending along the cable containing the superconductive wires.
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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) | 1981-03-13 | 1981-09-12 | 1982-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-13 | 1985-09-12 | 1986-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-13 | 1989-09-12 | 1990-03-14 | $7700.00 | Window Closed / Lapsed |