US3644786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical windings
Assignee: Westinghouse Electric Corp
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Filing: 1970-08-26
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Granted: 1972-02-22
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Expires: 1990-08-26
Abstract
Abstract An electrical winding structure having first and second tapped winding portions, and a switching device which selects and interconnects taps on the two winding portions. A capacitor is electrically connected between the two winding portions at the coil break, i.e., between the ends of the two winding sections which are ''''floating'''' when the switching device is not in the maximum turn position, to reduce the magnitude of surge stresses across the coil break.
Inventors
- 👤 Dean A Yannucci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:54
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/34; H01F27/343; H01F29/00; H01F29/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
146 words
A winding assembly for electrical inductive apparatus, comprising: first and second winding portions each having first and second ends and each having a plurality of conductor turns connected between their ends, a plurality of taps connected to predetermined conductor turns of said first and second winding portions, switching means electrically interconnecting said first and second winding portions, said switching means being operaBle to select a tap on each of said first and second winding portions and provide at least one series path between the first and second ends of said first and second winding portions, respectively, having a preselectable number of turns therein, and a capacitor electrically connected between said first and second winding portions, said capacitor being directly connected to the second and first ends of said first and second winding portions, respectively, to reduce the magnitude of surge voltage oscillations between their adjacent ends.
Claim 2
Dependent Claim
146 words
A winding assembly for electrical inductive apparatus, comprising: first and second winding portions each having first and second ends and each having a plurality of conductor turns connected between their ends, a plurality of taps connected to predetermined conductor turns of said first and second winding portions, switching means electrically interconnecting said first and second winding portions, said switching means being operaBle to select a tap on each of said first and second winding portions and provide at least one series path between the first and second ends of said first and second winding portions, respectively, having a preselectable number of turns therein, and a capacitor electrically connected between said first and second winding portions, said capacitor being directly connected to the second and first ends of said first and second winding portions, respectively, to reduce the magnitude of surge voltage oscillations between their adjacent ends.
Claim 3
Dependent Claim
19 words
The winding of claim 1 wherein each winding portion includes at least one pancake coil of the continuous type.
Claim 4
Dependent Claim
22 words
The winding of claim 1 wherein each winding portion includes at least one pancake coil of the interleaved turn, high-series capacitance type.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |