US3899764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Four-strand interleaved-turn transformer winding
Assignee: ABB Inc USA
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Filing: 1974-09-16
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Granted: 1975-08-12
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Expires: 1994-09-16
Abstract
Abstract An interleaved-turn winding for electrical inductive apparatus. Four conduction paths through the windings are provided by interconnections between the coil disks of the winding. Two of the conduction paths begin at an upper coil disk and spiral inwardly toward the center of the winding. These paths are directed to the adjacent and lower coil disk by interconnecting leads and then progress outwardly through the adjacent coil disk. The other two conduction paths begin at the adjacent coil disk and spiral outwardly therethrough and then inwardly through the upper coil disk. High series capacitance is obtained by positioning a conduction path from one pair of conduction paths between the conduction paths of the other pair.
Inventors
- 👤 Nice Robert I Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:25
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/34; H01F27/343
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
243 words
An interleaved winding for electrical inductive apparatus, comprising: at least first and second coil disks disposed axially adjacent to each other, with each coil disk containing a plurality of conductors spirally disposed around a common axis to form at least inner and outer turns of the conductors; start-start and finish-finish connections located between the coil disks to provide at least first, second, third and fourth conduction paths through the coil disks, said conduction paths being directed in a first radial direction when progressing towards said axis and in a second radial direction when progressing away from said axis; said first and second conduction paths beginning at the outer turn of the first coil disk and progressing in the first direction through the first coil disk and then in the second direction through the second coil disk; said third and fourth conduction paths beginning at the inner turn of the second coil disk and progressing in the second direction through the second coil disk and then in the first direction through the first coil disk; with said third conduction path being radially positioned, in the coil disks, between the first and second conduction paths; said first disk being connected to a third coil disk in the winding by a start-start connection which is positioned under the inner turn of the second coil disk, said third coil disk being axially located in the winding with two coil disks between the first and third coil disks.
Claim 2
Dependent Claim
243 words
An interleaved winding for electrical inductive apparatus, comprising: at least first and second coil disks disposed axially adjacent to each other, with each coil disk containing a plurality of conductors spirally disposed around a common axis to form at least inner and outer turns of the conductors; start-start and finish-finish connections located between the coil disks to provide at least first, second, third and fourth conduction paths through the coil disks, said conduction paths being directed in a first radial direction when progressing towards said axis and in a second radial direction when progressing away from said axis; said first and second conduction paths beginning at the outer turn of the first coil disk and progressing in the first direction through the first coil disk and then in the second direction through the second coil disk; said third and fourth conduction paths beginning at the inner turn of the second coil disk and progressing in the second direction through the second coil disk and then in the first direction through the first coil disk; with said third conduction path being radially positioned, in the coil disks, between the first and second conduction paths; said first disk being connected to a third coil disk in the winding by a start-start connection which is positioned under the inner turn of the second coil disk, said third coil disk being axially located in the winding with two coil disks between the first and third coil disks.
Claim 3
Dependent Claim
22 words
The interleaved winding of claim 1 wherein the first conduction path begins at the outermost conductor location in the first coil disk.
Claim 4
Dependent Claim
22 words
The interleaved winding of claim 1 wherein the fourth conduction path begins at the innermost conductor location in the second coil disk.
References Cited (Backward Citations)
FR1147282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |