US4384168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductor for a fluid-cooled winding
Assignee: United States Department of Energy
•
Filing: 1981-05-12
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Granted: 1983-05-17
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Expires: 2001-05-12
Abstract
Abstract A conductor and method of making the conductor are provided for use in winding electrical coils which are cooled by a fluid communicating with the conductor. The conductor is cold worked through twisting and reshaping steps to form a generally rectangular cross section conductor having a plurality of helical cooling grooves extending axially of the conductor. The conductor configuration makes it suitable for a wide variety of winding applications and permits the use of simple strip insulation between turns and perforated sheet insulation between layers of the winding.
Inventors
- 👤 Walter J. Kenney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:53
CPC Classifications
H; H01; H01F; H01F6/00; H01F6/06; H01F41/00; H01F41/02; H01F41/04; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/884; Y10S505/887; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
65 words
An electrical conductor for an electrical winding whose temperature is controlled by a fluid communicating with said conductor, comprising: a generally rectangular cross section superconducting member having a plurality of helical grooves formed in the periphery of said member by twisting an elongated, rectangular cross section, composite superconductor about its longitudinal axis and subsequently reshaping the previously twisted superconductor into said generally rectangular cross section.
Claim 2
Dependent Claim
65 words
An electrical conductor for an electrical winding whose temperature is controlled by a fluid communicating with said conductor, comprising: a generally rectangular cross section superconducting member having a plurality of helical grooves formed in the periphery of said member by twisting an elongated, rectangular cross section, composite superconductor about its longitudinal axis and subsequently reshaping the previously twisted superconductor into said generally rectangular cross section.
Claim 3
Dependent Claim
30 words
The conductor as set forth in claim 1 wherein said composite superconductor wire comprises a matrix of normally conducting material containing a plurality of longitudinally extending strands of superconducting material.
Claim 4
Dependent Claim
15 words
The conductor as set forth in claim 2 wherein said normally conducting material is copper.
Claim 5
Dependent Claim
33 words
The conductor as set forth in claim 1 wherein said elongated rectangular cross section composite superconductor comprises an oblong cross section superconductor which yields essentially two similar helical grooves in said conducting member.
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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) | 1986-05-16 | 1986-11-15 | 1987-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-16 | 1990-11-15 | 1991-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-16 | 1994-11-15 | 1995-05-17 | $7700.00 | Window Closed / Lapsed |