Patent US3559136A successfully refreshed from Google Patents.
US3559136A
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Magnetic core structure
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 A MAGNETIC CORE STRUCTURE OF THE STACKED TYPE HAVING A PLURALITY OF LAYERS OF METALLIC LAMINATIONS. EACH LAYER INCLUDES OUTER LEG LAMINATIONS, AT LEAST ONE INNER LEG LAMINATION, AND YOKE LAMINATIONS. EACH OF THE ENDS OF EACH INNER LEG LAMINATION HAVE THE CONFIGURATION OF A TRUNCATED ISOSCELES TRIANGLE, WITH THE ENDS OF THE INNER LEG LAMINATIONS BEING OFFSET FROM LAYER TO LAYER IN A PREDETERMINED STEPPED-LAP PATTERN.
Inventors
- 👤 Theodore R Specht
- 👤 Angelo A De Laurentis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:50
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/24; H01F27/245; H01F27/33; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49075; Y10T29/49078
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 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 |