Patent US3699647A successfully refreshed from Google Patents.
US3699647A
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Method of manufacturing long length composite superconductors
Assignee: Compagnie Francaise Thomson Houston SA
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Filing: 1970-07-15
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Granted: 1972-10-24
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Expires: 1990-07-15
Abstract
Abstract Elongated elements of superconductive material are applied to an elongated, heated base support at a temperature permitting retention of the superconductive qualities in the material, and in a controlled atmosphere, the application step being carried out while twisting the superconductive element with respect to the base support so that the major axes of the superconductive elements will be inclined with respect to the major axis of the base support; composite elements can be made by applying composites of the resulting superconductive material and elongated base supports on additional supports, or forming them in tubular or other form, joined together, at temperatures below the temperatures at which the superconductive properties of the superconductive elements are affected.
Inventors
- 👤 Michel Bidault
- 👤 Jean Dosdat
- 👤 Roland Lelay
- 👤 Jean Claude Parouty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:12
CPC Classifications
H; H01; H01B; H01B12/00; H01B12/02; H01B12/10; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/917; Y10S505/918; Y10S505/919; Y10S505/921; Y10S505/928; Y10S505/93; Y10S72/00; Y10S72/70; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
120 words
Method of manufacturing composite superconductors capable of being made in long lengths and having substantial thermal and electrical stability comprising applying elongated composite superconductor wires having superconductive filaments embedded in a support, unto the surface of an elongated base support, said application step comprising heating the base support to a temperature permitting retention of superconductive qualities in the superconductor filaments and being within about 400* C to 800* C, spirally applying said superconductor elements while at ambient room temperature to said heated base support with their major axes inclined with respect to the major axis of said base support; and merging said ambient temperature superconductor wires with the heated base support by mechanical conjoint extrusion while in a controlled atmosphere.
Claim 2
Dependent Claim
120 words
Method of manufacturing composite superconductors capable of being made in long lengths and having substantial thermal and electrical stability comprising applying elongated composite superconductor wires having superconductive filaments embedded in a support, unto the surface of an elongated base support, said application step comprising heating the base support to a temperature permitting retention of superconductive qualities in the superconductor filaments and being within about 400* C to 800* C, spirally applying said superconductor elements while at ambient room temperature to said heated base support with their major axes inclined with respect to the major axis of said base support; and merging said ambient temperature superconductor wires with the heated base support by mechanical conjoint extrusion while in a controlled atmosphere.
Claim 3
Dependent Claim
20 words
Method according to claim 1, wherein the elongated heated base support comprises a rod, a bar, a band, or tube.
Claim 4
Dependent Claim
32 words
Method according to claim 1, wherein the superconductors comprise a plurality of superconductive filaments embedded in a stabilizing material, the outline of said stabilizing material with said embedded filaments being substantially round.
Claim 5
Dependent Claim
18 words
Method according to claim 1, wherein the superconductors comprise a mono-filamentary superconductive filament embedded in a stabilizing cover.
Claim 6
Dependent Claim
19 words
Method according to claim 1, wherein the superconductor comprises multifilamentary superconductive filaments embedded in a ribbon of stabilizing material.
Claim 7
Dependent Claim
25 words
Method according to claim 1, wherein the superconductors comprise a superconductor filament having a major axis extending essentially parallel to the axis of the stabilizer.
Claim 8
Dependent Claim
34 words
Method according to claim 1, wherein the superconductor comprises superconductive filaments having their major axes extending at an inclination with respect to the axis of the stabilizer, whereby the superconductive filaments will be transposed.
Claim 9
Dependent Claim
19 words
Method according to claim 1, wherein the superconductive filaments have an individual filamentary thickness of 200 Mu or less.
Claim 10
Dependent Claim
13 words
Method according to claim 1 wherein the controlled atmosphere is a reducing atmosphere.
Claim 11
Dependent Claim
112 words
Apparatus to make composite superconductors having an elongated base support and composite superconductor wires with superconductive filaments therein applied to the base, comprising a heating means to heat said base support; supply means applying said superconductor wires with said superconductive filaments therein about said base support to spirally apply said superconductor wires about the heated base support; a housing, and means providing a protective atmosphere within said housing; a drawing die located in said housing and receiving said heated base support with said superconductor wires spirally applied to the surface thereof, said drawing die merging together said superconductor wires to the surface of said heated base support while in the protective atmosphere.
Claim 12
Dependent Claim
112 words
Apparatus to make composite superconductors having an elongated base support and composite superconductor wires with superconductive filaments therein applied to the base, comprising a heating means to heat said base support; supply means applying said superconductor wires with said superconductive filaments therein about said base support to spirally apply said superconductor wires about the heated base support; a housing, and means providing a protective atmosphere within said housing; a drawing die located in said housing and receiving said heated base support with said superconductor wires spirally applied to the surface thereof, said drawing die merging together said superconductor wires to the surface of said heated base support while in the protective atmosphere.
Claim 13
Dependent Claim
69 words
Method according to claim 1, wherein said superconductors comprise fine wires of niobium and tin, or of niobium and an aluminum-germanium alloy, closely adjacently located within a metallic jacket; and the step of application of said superconductor elements to said base support is followed by a heating step at a temperature in which the niobium and tin, or niobium and aluminum-germanium alloy transforms into Nb3Sn, or Nb3 (AlGe), respectively.
Claim 14
Dependent Claim
47 words
Method according to claim 1, wherein said base support comprises a flattened tube; and said method includes the additional step of expanding said tube after application of said superconductors thereon, under pressure, to embed said superconductors, with said superconductive filament therein, in the material of said tube.
Claim 15
Dependent Claim
47 words
Method according to claim 1, including the step of inserting, after application of said superconductors to said base support, the composite of superconductors and base support, under pressure, in a matrix of good heat-conductive and electricity-conductive material and distention, under pressure, to form a hollow composite superconductor.
Claim 16
Dependent Claim
52 words
Method according to claim 13, wherein the superconductors are applied to said base support under heat, said base supporT comprising a flattened tube (FIG. 10); and said flattened tube is inserted into a matrix of material of good electrical and heat conductivity and distended, under pressure, to form a hollow composite superconductor.
Claim 17
Dependent Claim
23 words
Method according to claim 1, including the step of preliminarily securing said superconductors to said base support in advance of said application step.
Claim 18
Dependent Claim
24 words
Method according to claim 15, wherein said securing step includes the step of brazing the terminal ends of the superconductors to the base support.
Claim 19
Dependent Claim
49 words
Method according to claim 1, wherein the step of applying said superconductors to said elongated heated base support includes the step of spiralling said superconductors about said elongated, heated base support; and drawing together, through a die, said superconductors, with said superconductive filaments therein, and said elongated base support.
Claim 20
Dependent Claim
36 words
Method according to claim 17, wherein the drawing step includes the step of drawing said superconductors with said superconductive filaments therein, and said base support, over a drawing core; and reducing the diameter of the composite.
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |