US5134040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Melt formed superconducting joint between superconducting tapes
Assignee: General Electric Co
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Filing: 1991-07-19
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Granted: 1992-07-28
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Expires: 2011-07-19
Abstract
Abstract Superconducting tapes have an inner laminate comprised of a parent-metal layer selected from the group niobium, tantalum, technetium, and vanadium, a superconductive intermetallic compound layer on the parent-metal layer, and a reactive-metal layer that is capable of combining with the parent-metal and forming the superconductive intermetallic compound. A superconducting joint between contiguous tapes comprises, a continuous precipitate of the superconductive intermetallic compound fused to the tapes forming a continuous superconducting path between the tapes.
Inventors
- 👤 Mark G. Benz
- 👤 Bruce A. Knudsen
- 👤 Lee E. Rumaner
- 👤 Robert J. Zabala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:57
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/80; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/93; Y10S505/00; Y10S505/825; Y10S505/917; Y10S505/927; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12708; Y10T428/12771; Y10T428/12806; Y10T428/12819
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
74 words
A superconducting joint between contiguous superconducting tapes having an inner laminate comprised of a parent-metal layer selected from the group niobium, tantalum, technetium, and vanadium, a superconductive intermetallic compound layer on the parent-metal layer, a reactive-metal layer that is capable of combining with the parent-metal and forming the superconductive intermetallic compound, the joint comprising: a continuous precipitate of the superconductive intermetallic compound fused to the tapes forming a continuous superconducting path between the tapes.
Claim 2
Dependent Claim
74 words
A superconducting joint between contiguous superconducting tapes having an inner laminate comprised of a parent-metal layer selected from the group niobium, tantalum, technetium, and vanadium, a superconductive intermetallic compound layer on the parent-metal layer, a reactive-metal layer that is capable of combining with the parent-metal and forming the superconductive intermetallic compound, the joint comprising: a continuous precipitate of the superconductive intermetallic compound fused to the tapes forming a continuous superconducting path between the tapes.
Claim 3
Dependent Claim
21 words
The superconducting joint of claim 1 further comprised of an outer laminate of a non-superconductive metal bonded to cover the joint.
Claim 4
Dependent Claim
33 words
The superconducting joint of claim 1 wherein the tapes are overlapping and symmetrically aligned in the width dimension, and the precipitate is fused at an edge in the width dimension of the tapes.
Claim 5
Dependent Claim
28 words
The superconducting joint of claim 1 wherein the tapes are coplanar and aligned to form a butt joint, and the precipitate is fused where the tapes are contiguous.
Claim 6
Dependent Claim
54 words
A superconducting joint between contiguous superconducting tapes having an inner laminate comprised of a niobium layer, a superconductive triniobium tin layer on the niobium layer, and a tin layer on the triniobium tin layer, comprising: a continuous precipitate of the triniobium tin fused to the tapes forming a continuous superconducting path between the tapes.
Claim 7
Dependent Claim
54 words
A superconducting joint between contiguous superconducting tapes having an inner laminate comprised of a niobium layer, a superconductive triniobium tin layer on the niobium layer, and a tin layer on the triniobium tin layer, comprising: a continuous precipitate of the triniobium tin fused to the tapes forming a continuous superconducting path between the tapes.
Claim 8
Dependent Claim
21 words
The superconducting joint of claim 5 further comprised of an outer laminate of a non-superconductive metal bonded to cover the joint.
Claim 9
Dependent Claim
33 words
The superconducting joint of claim 5 wherein the tapes are overlapping and symmetrically aligned in the width dimension, and the precipitate is fused at an edge in the width dimension of the tapes.
Claim 10
Dependent Claim
28 words
The superconducting joint of claim 5 wherein the tapes are coplanar and aligned to form a butt joint, and the precipitate is fused where the tapes are contiguous.
Claim 11
Dependent Claim
49 words
The superconducting joint of claim 5 wherein the parent-metal layer is comprised of up to about 5 atomic percent zirconium, up to about 10 atomic percent oxygen, and the balance niobium, and the reactive-metal layer is comprised of up to about 40 atomic percent copper and the balance tin.
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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) | 1995-07-28 | 1996-01-27 | 1996-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-28 | 2000-01-27 | 2000-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-28 | 2004-01-27 | 2004-07-28 | $7700.00 | Window Closed / Lapsed |