US4564564A
Expired / Lapsed
US
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Superconducting magnet wire
Assignee: United States, ENERGY THE, Secretary of, Department of
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Filing: 1983-08-16
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Granted: 1986-01-14
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Expires: 2003-08-16
Abstract
Abstract A superconducting tape or wire with an improved critical field is formed of alternating layers of a niobium-containing superconductor such as Nb, NbTi, Nb 3 Sn or Nb 3 Ge with a thickness in the range of about 0.5-1.5 times its coherence length, supported and separated by layers of copper with each copper layer having a thickness in the range of about 170-600 Å.
Inventors
- 👤 Ivan K. Schuller
- 👤 John B. Ketterson
- 👤 Indrajit Banerjee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:52
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/20; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9265; Y10S428/93; Y10S505/00; Y10S505/80; Y10S505/801; Y10S505/805; Y10S505/806; Y10S505/812; Y10S505/813; Y10S505/825; Y10S505/879; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12819; Y10T428/12861; Y10T428/12903
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
51 words
A superconducting metallic tape comprising at least 100 alternating layers of a niobium-containing superconductor and copper, with each layer of the superconductor having a thickness in the range of about 0.5-1.5 times the coherence length for the superconducting composition and each copper layer thickness in the range of about 170-600 Å.
Claim 2
Dependent Claim
51 words
A superconducting metallic tape comprising at least 100 alternating layers of a niobium-containing superconductor and copper, with each layer of the superconductor having a thickness in the range of about 0.5-1.5 times the coherence length for the superconducting composition and each copper layer thickness in the range of about 170-600 Å.
Claim 3
Dependent Claim
12 words
The metallic tape of claim 1 wherein the superconducting composition is Nb.
Claim 4
Dependent Claim
13 words
The metallic taper of claim 1 wherein the superconductor is Nb 3 Sn.
Claim 5
Dependent Claim
13 words
The metallic tape of claim 1 wherein the superconductor is Nb 3 Ge.
Claim 6
Dependent Claim
11 words
The metallic tape of claim 1 wherein the superconductor is NbTi.
Claim 7
Dependent Claim
20 words
The metallic tape of claim 1 wherein the superconductor layer is about 0.75-1.25 times the coherence length for the superconductor.
Claim 8
Dependent Claim
14 words
The metallic tape of claim 6 wherein the copper layer is about 300-450 Å.
Claim 9
Dependent Claim
22 words
The metallic tape of claim 7 wherein the tape is self-supporting, ductile and is composed of about 100-500 layers of the superconductor.
Claim 10
Dependent Claim
11 words
The metallic tape of claim 8 wherein the superconductor is Nb.
Claim 11
Dependent Claim
14 words
The metallic tape of claim 8 wherein the superconducting composition is Nb 3 Sn.
Claim 12
Dependent Claim
14 words
The metallic tape of claim 7 wherein the superconducting composition is Nb 3 Ge.
Claim 13
Dependent Claim
12 words
The metallic tape of claim 7 wherein the superconducting composition is NbTi.
Claim 14
Dependent Claim
33 words
A superconducting magnet comprising a magnet core and a superconducting tape wound about the core and formed of a plurality of the alternating layers of the niobium-containing superconductor and copper of claim 1.
Claim 15
Dependent Claim
10 words
The magnet of claim 13 wherein the superconductor is Nb.
Claim 16
Dependent Claim
12 words
The magnet of claim 13 wherein the superconductor is Nb 3 Sn.
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) | 1989-01-13 | 1989-07-15 | 1990-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-13 | 1993-07-15 | 1994-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-13 | 1997-07-15 | 1998-01-14 | $7700.00 | Window Closed / Lapsed |