Patent US3309641A successfully refreshed from Google Patents.
US3309641A
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Magnetic core structures for electrical inductive apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1966-06-28
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Granted: 1967-03-14
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Expires: 1986-06-28
Abstract
No abstract record available.
Inventors
- 👤 Charles E Burkhardt
- 👤 Belvin B Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:59
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/0206; H01F27/00; H01F27/24; H01F27/245; H01F27/2455; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49075; Y10T29/49078
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A MAGNETIC CORE COMPRISING A PLURALITY OF SUPERIMPOSED TURNS OF METALLIC LAMINATIONS, SAID SUPERIMPOSED TURNS OF METALLIC LAMINATIONS PROVIDING A LAMINATED CORE STRUCTURE IN WHICH THE OUTER TURN DEFINES A PLURALITY OF MAJOR OUTER SIDES SEPARATED BY OUTER CORNERS AND THE INNER TURN DEFINES AN OPENING IN THE STRUCTURE, AT LEAST THE OUTER CORNERS OF SAID CORE STRUCTURE EACH HAVING A PLURALITY OF DISCRETE BENDS WHICH PROVIDE A PLURALITY OF ADDITIONAL OUTER SIDES, SAID DISCRETE BENDS AT EACH OF SAID OUTER CORNERS EXTENDING THROUGH ALL OF THE SUPERIMPOSED TURNS OF THE METALLIC LAMINATIONS, FROM THE OUTER LAMINATION TURN TO THE INNER LAMINATION TURN, EACH OF SAID ADDITIONAL OUTER SIDES BEING BENT INWARDLY A PREDETERMINED AMOUNT TO INSURE THAT THE DISCRETE BENDS ARE SHARPLY DEFINED IN EACH OF THE LAMINATION TURNS.
Claim 2
Dependent Claim
130 words
A MAGNETIC CORE COMPRISING A PLURALITY OF SUPERIMPOSED TURNS OF METALLIC LAMINATIONS, SAID SUPERIMPOSED TURNS OF METALLIC LAMINATIONS PROVIDING A LAMINATED CORE STRUCTURE IN WHICH THE OUTER TURN DEFINES A PLURALITY OF MAJOR OUTER SIDES SEPARATED BY OUTER CORNERS AND THE INNER TURN DEFINES AN OPENING IN THE STRUCTURE, AT LEAST THE OUTER CORNERS OF SAID CORE STRUCTURE EACH HAVING A PLURALITY OF DISCRETE BENDS WHICH PROVIDE A PLURALITY OF ADDITIONAL OUTER SIDES, SAID DISCRETE BENDS AT EACH OF SAID OUTER CORNERS EXTENDING THROUGH ALL OF THE SUPERIMPOSED TURNS OF THE METALLIC LAMINATIONS, FROM THE OUTER LAMINATION TURN TO THE INNER LAMINATION TURN, EACH OF SAID ADDITIONAL OUTER SIDES BEING BENT INWARDLY A PREDETERMINED AMOUNT TO INSURE THAT THE DISCRETE BENDS ARE SHARPLY DEFINED IN EACH OF THE LAMINATION TURNS.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |