US3611078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized ac superconductor
Assignee: Siemens AG
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Filing: 1969-04-01
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Granted: 1971-10-05
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Expires: 1989-04-01
Abstract
Abstract Described is an AC superconductor, comprised of a superconducting layer of type I or II intended for the load current, which is placed with a minimum contact resistance upon a metallic stabilizing layer which during overloading absorbs the current at least partially and temporarily. The stabilizing layer is comprised of a superconducting material of type III.
Inventors
- 👤 Ernst Massar
- 👤 Claus-Peter Parsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:25
CPC Classifications
H; H01; H01B; H01B12/00; H01B12/02; H01B12/04; H10; H10N; H10N60/00; H10N60/20; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/85
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
68 words
An AC superconductor, comprised of a superconducting layer of type I intended for the load current, which is placed with a minimum contact resistance upon a metallic stabilizing layer of a superconducting material of type III, which during overloading absorbs the current, at least partially and temporarily, said superconductor of type I encloses said superconductor of type III provided for stabilizing purposes in the form of a tube.
Claim 2
Dependent Claim
68 words
An AC superconductor, comprised of a superconducting layer of type I intended for the load current, which is placed with a minimum contact resistance upon a metallic stabilizing layer of a superconducting material of type III, which during overloading absorbs the current, at least partially and temporarily, said superconductor of type I encloses said superconductor of type III provided for stabilizing purposes in the form of a tube.
Claim 3
Dependent Claim
14 words
The superconductor of claim 1 wherein the superconducting layer of type I is lead.
Claim 4
Dependent Claim
11 words
The superconductor of claim 1, wherein the superconductors are concentric tubes.
Claim 5
Dependent Claim
50 words
The superconductor of claim 3, wherein at least two mutually contacting layers of superconducting material of type III, provided for stabilization, are present which have higher critical field strengths for the alternating current the further they are from the superconductor of type I, which is provided for the current load.
Claim 6
Dependent Claim
45 words
The superconductor of claim 1, wherein the superconductor consists of a core which has normal electrical conductivity at low temperatures, with at least two layers of superconducting material placed thereon and having a critical field strength for the alternating current which declines toward the outside.
Claim 7
Dependent Claim
14 words
The superconductor of claim 5, wherein the core is selected from copper and aluminum.
Claim 8
Dependent Claim
20 words
The superconductor of claim 5, wherein the core is a tube upon whose outer wall the superconductor layers are placed.
Claim 9
Dependent Claim
20 words
The superconductor of claim 5, wherein the thickness of the respective superconducting layer is between 1 and 10 Mu .
Claim 10
Dependent Claim
68 words
An AC superconductor, comprised of a superconducting layer of type II intended for the load current, which is placed with a minimum contact resistance upon a metallic stabilizing layer of a superconducting material of type III, which during overloading absorbs the current at least partially and temporarily, said superconductor of type II encloses the superconductor of type III provided for stabilizing purposes, in the form of a tube.
Claim 11
Dependent Claim
68 words
An AC superconductor, comprised of a superconducting layer of type II intended for the load current, which is placed with a minimum contact resistance upon a metallic stabilizing layer of a superconducting material of type III, which during overloading absorbs the current at least partially and temporarily, said superconductor of type II encloses the superconductor of type III provided for stabilizing purposes, in the form of a tube.
Claim 12
Dependent Claim
11 words
The superconductor of claim 9 wherein the superconductors are concentric tubes.
Claim 13
Dependent Claim
50 words
The superconductor of claim 10 wherein at least two mutually contacting layers of superconducting material of type III, provided for stabilization, are present which have higher critical field strengths for the alternating current the further they are from the superconductor of type II which is provided for the current load.
Claim 14
Dependent Claim
14 words
The superconductor of claim 9 wherein the superconducting layer of type II is niobium.
References Cited (Backward Citations)
US3201765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |