US5047741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy-impregnated superconductive tape coils
Assignee: General Electric Co
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Filing: 1989-08-17
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Granted: 1991-09-10
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Expires: 2009-08-17
Abstract
Abstract A superconductive foil and a first and second foil of current conducting material. The first and second foil are soldered symmetrically about said superconductive foil forming a superconductive tape. The tape is wound in helical layers forming a coil. Adjacent turns of the tape are electrically insulated from one another. A strip of electrically conductive foil is situated between layers of tape and electrically isolated therefrom. The strip of electrically conductive foil encloses the inner layers of the tape, with the ends of the strip joined together to form an electrically conductive loop. The coil is epoxy resin impregnated.
Inventors
- 👤 Evangelos T. Laskaris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:46
CPC Classifications
H; H01; H01F; H01F6/00; H01F6/06
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
90 words
A superconductive tape coil comprising: a superconductive foil; a first and second foil of current conducting material soldered symmetrically about said superconductive foil forming a superconductive tape, said tape wound in helical layers forming a coil; adjacent turns of tape electrically insulated from one another; a strip of electrically conductive foil situated between layers of tape and electrically insulated therefrom, said strip of conductive foil enclosing the inner layers of tape, the ends of said strip joined together to form an electrically conductive loop; and epoxy resin impregnating said coil.
Claim 2
Dependent Claim
90 words
A superconductive tape coil comprising: a superconductive foil; a first and second foil of current conducting material soldered symmetrically about said superconductive foil forming a superconductive tape, said tape wound in helical layers forming a coil; adjacent turns of tape electrically insulated from one another; a strip of electrically conductive foil situated between layers of tape and electrically insulated therefrom, said strip of conductive foil enclosing the inner layers of tape, the ends of said strip joined together to form an electrically conductive loop; and epoxy resin impregnating said coil.
Claim 3
Dependent Claim
33 words
The superconductive tape coil of claim 1 further comprising a plurality of layers of conductive foil loops surrounding said helically wound layers of tape, said plurality of layers of loops epoxy resin impregnated.
Claim 4
Dependent Claim
17 words
The superconductive coil of claim 2 wherein said electrically conductive foil in said loops comprises hardened copper.
Claim 5
Dependent Claim
37 words
The superconductive coil of claim 3 further comprises a plurality of layers of glass cloth with a layer of glass cloth between each of said plurality of layers of electrically conductive loops surrounding said helically wound tape.
Claim 6
Dependent Claim
14 words
The superconductive tape coil of claim 4 wherein said hardened copper foils are perforated.
Claim 7
Dependent Claim
19 words
The superconductive tape coil of claim 1 wherein said tape is covered with a spiral wrap of filamentary insulation.
Claim 8
Dependent Claim
114 words
A superconductive tape coil for use with refrigeration cooling comprising: a superconductive foil having a width greater than its thickness and the same superconductive properties along its length as across its width; a first and second foil of current conducting material soldered symmetrically about said superconductive foil forming a superconductive tape, said tape wound in helical layers forming a coil, adjacent turns of tape electrically insulated from one another; a strip of electrically conductive foil situated between layers of tape and electrically insulated therefrom, said strip of conductive foil enclosing the inner layers of tape, the ends of said strip joined together to form an electrically conductive loop; and epoxy resin impregnating said coil.
Claim 9
Dependent Claim
114 words
A superconductive tape coil for use with refrigeration cooling comprising: a superconductive foil having a width greater than its thickness and the same superconductive properties along its length as across its width; a first and second foil of current conducting material soldered symmetrically about said superconductive foil forming a superconductive tape, said tape wound in helical layers forming a coil, adjacent turns of tape electrically insulated from one another; a strip of electrically conductive foil situated between layers of tape and electrically insulated therefrom, said strip of conductive foil enclosing the inner layers of tape, the ends of said strip joined together to form an electrically conductive loop; and epoxy resin impregnating said coil.
Claim 10
Dependent Claim
33 words
The superconductive tape coil of claim 7 further comprising a plurality of layers of conductive foil loops surrounding said helically wound layers of tape, said plurality of layers of loops epoxy resin impregnated.
Claim 11
Dependent Claim
17 words
The superconductive coil of claim 8 wherein said electrically conductive foil in said loops comprises hardened cooper.
Claim 12
Dependent Claim
37 words
The superconductive coil of claim 9 further comprises a plurality of layers of glass cloth with a layer of glass cloth between each of said plurality of layers of electrically conductive loops surrounding said helically wound tape.
Claim 13
Dependent Claim
14 words
The superconductive tape coil of claim 10 wherein said hardened copper foils are perforated.
Claim 14
Dependent Claim
19 words
The superconductive tape coil of claim 7 wherein said tape is covered with a spiral wrap of filamentary insulation.
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) | 1994-09-09 | 1995-03-11 | 1995-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-09 | 1999-03-11 | 1999-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-09 | 2003-03-11 | 2003-09-10 | $7700.00 | Window Closed / Lapsed |