Patent US3743986A successfully refreshed from Google Patents.
US3743986A
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Improved resistive envelope for a multifilament superconductor wire
Assignee: United States Atomic Energy Commission
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Filing: 1972-02-08
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Granted: 1973-07-03
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Expires: 1992-02-08
Abstract
Abstract Improved method for making superconductors and/or improving their superconducting characteristics in which an insulating or resistive envelope forming a sheath having a resistance higher than the superconductors is formed around a multifilamentary matrix stabilized superconductor wire. In one example, a tinbronze layer is formed around multi-filamentary, matrix stabilized superconductor wires, and the tinbronze layer is converted, at least in part, into an insulator. Also, an indiumthalium heat sink is provided. Additionally, multifilamentary superconductor wires are provided having a copper matrix into which titanium is diffused to leave a more resistive matrix around the Nb-Ti filaments.
Inventors
- 👤 A Mcinturff
- 👤 F Abbatiello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:19
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/01; H10N60/0156; H01; H01B; H01B12/00; H01B12/02; H01B12/10; H01F; H01F27/00; H01F27/28; H01F27/2804; H01F27/2819; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/884; Y10S505/887; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
11 words
The superconductor of claim 1, having an insulator around said envelope.
Claim 2
Dependent Claim
13 words
The superconductor of claim 2, having an indium-thallium heat sink around said insulator.
Claim 3
Dependent Claim
44 words
The superconductor of claim 3 which is assembled into a multifilamentary matrix stabilized superconductor having a diameter of about 8 mils and superconducting filaments of about 50 percent Nb and about 50 percent titanium about 3 mils in diameter in a copper containing matrix.
Claim 4
Dependent Claim
16 words
The superconductor of claim 4 in which said superconducting filaments contain titanium diffused from said matrix.
Claim 5
Dependent Claim
34 words
The superconductor of claim 3 in which said superconductor is assembled into a braid forming foraminae having indium-thallium heat sink material, comprising 10 percent thallium at least partially filling the foraminae of said braid.
Claim 6
Dependent Claim
19 words
The superconductor of claim 1 in which said tin-bronze envelope contains tin diffused into a portion of said matrix.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |