Patent US3766502A successfully refreshed from Google Patents.
US3766502A
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US
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Cooling device for superconducting coils
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1971-05-17
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Granted: 1973-10-16
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Expires: 1991-05-17
Abstract
Abstract A cooling device for a superconducting element which is wound in continuous turns to form a coil. The device comprises an assembly of thin metallic filaments which is mounted between the different turns of the coil. The filaments are electrically insulated from each other and in thermal contact with the turns of the winding and with a bath of liquefied gas.
Inventors
- 👤 G Bronca
- 👤 C Lefrancois
- 👤 I Hlasnik
- 👤 J Poullange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:08
CPC Classifications
H; H01; H01F; H01F6/00; H01F6/02; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/884; Y10S505/885
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
63 words
A cooling device for a superconducting coil constituted by a winding of continuous turns of a superconducting element, wherein said device comprises an assembly of thin metallic filaments which is Mounted between the different turns of the coil, said filaments being electrically insulated from each other and in thermal contact with the turns of the winding and with a bath of liquefied gas.
Claim 2
Dependent Claim
63 words
A cooling device for a superconducting coil constituted by a winding of continuous turns of a superconducting element, wherein said device comprises an assembly of thin metallic filaments which is Mounted between the different turns of the coil, said filaments being electrically insulated from each other and in thermal contact with the turns of the winding and with a bath of liquefied gas.
Claim 3
Dependent Claim
46 words
A device according to claim 1, wherein the surface which provides heat transfer between the metallic filaments and the bath of liquefied gas is defined by metallic beads in which the ends of said filaments are embedded after said ends have previously been stripped of insulation.
Claim 4
Dependent Claim
27 words
A device according to claim 2, wherein the ends of the metallic filaments which have been stripped of insulation are immersed in the bath of liquefied gas.
Claim 5
Dependent Claim
32 words
A device according to claim 2, wherein the ends of the metallic filaments are in thermal contact with the bath of liquefied gas by means of the transverse section of said filaments.
Claim 6
Dependent Claim
27 words
A device according to claim 1, wherein the thermal contact between the filaments and the liquefied gas is established within ducts for the circulation of said gas.
Claim 7
Dependent Claim
35 words
A device according to claim 1, wherein the thermal contact between the turns of the coil and the filaments is established by impregnating the turns with electric insulating material which is filled with heat-conducting powders.
Claim 8
Dependent Claim
32 words
A device according to claim 1, wherein the metallic filaments are a metal having high purity selected from the group consisting of silver, aluminum and copper annealed after fabrication of said filaments.
References Cited (Backward Citations)
US3444307A
Cited
US3363207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |