US3559133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shielding arrangements for electrical windings
Assignee: Westinghouse Electric Corp
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Filing: 1969-06-20
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Granted: 1971-01-26
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Expires: 1989-06-20
Abstract
Abstract SHIELDING ARRANGEMENTS FOR INCREASING THE SERIES CAPACITANCE OF ELECTRICAL WINDINGS OF THE TYPE HAVING A PLURALITY OF CONTINUOUS PANCAKE TYPE COILS ARRANGED IN A STACK. EACH PANCAKE COIL HAS FIRST AND SECOND INTERLEAVED SECTIONS, WITH THE TURNS OF ONE OF THE SECTIONS BEING PART OF THE POWER CIRCUIT OF THE WINDING, AND THE TURNS OF THE OTHER SECTION BEING A SHIELDING ARRANGEMENT. THE SECTIONS OF THE PANCAKE COILS ARE INTERCONNECTED IN A PREDETERMINED MANNER TO FORM THE POWER CIRCUIT THROUGH THE WINDING, DEPENDING UPON THE SHIELDING ARRANGEMENT USED, TO REDUCE THE MAGNITUDE OF VOLTAGE OSCILLATORS PRODUCED WHEN A SURGE POTENTIAL IS APPLIED TO THE WINDING.
Inventors
- 👤 Robert I Van Nice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:47
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/34; H01F27/343; H01F27/345
Claims Analysis
Total Claims: 0
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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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |