Patent US3278878A successfully refreshed from Google Patents.
US3278878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leakage reactance transformer
Assignee: GTE Sylvania Inc
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Filing: 1964-01-27
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Granted: 1966-10-11
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Expires: 1984-01-27
Abstract
No abstract record available.
Inventors
- 👤 Anthony R Collucci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:14
CPC Classifications
H; H01; H01F; H01F38/00; H01F38/08; H01F38/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A TRANSFORMER HAVING A FOUR-LEGGED MAIN MAGNETIC CORE, THE LEGS ARRANGED TO FORM A RECTANGLE HAVING A WINDOW, TWO OF THE LEGS BEING LONG AND TWO SHORT, A PRIMARY COIL AND A SECONDARY COIL ON EACH LONG LEG, THE SECONDARY COILS BEING CONNECTED IN SERIES AIDING THE PRIMARY AND SECONDARY COILS ON EACH LEG BEING SPACED APART, A MAGNETIC LEAKAGE SHUNT EXTENDING FROM ONE LONG LEG TO THE OTHER IN THE SPACE BETWEEN COILS, AND A PARTIALLY BRIDGED GAP IN THE PORTION OF EACH LONG LEG INSIDE A SECONDARY COIL, THE GAP BEING FORMED BY LAMINATIONS WHOSE ENDS ARE SPACED APART FROM EACH OTHER AND BRIDGED BY LAMINATIONS WHICH EXTEND ACROSS THE GAP TO MEET CORRESPONDING LAMINATIONS IN A BUTT JOINT BEYOND THE AIR GAP AND INTERLEAVED WITH THE OTHER LAMINATIONS.
Claim 2
Dependent Claim
131 words
A TRANSFORMER HAVING A FOUR-LEGGED MAIN MAGNETIC CORE, THE LEGS ARRANGED TO FORM A RECTANGLE HAVING A WINDOW, TWO OF THE LEGS BEING LONG AND TWO SHORT, A PRIMARY COIL AND A SECONDARY COIL ON EACH LONG LEG, THE SECONDARY COILS BEING CONNECTED IN SERIES AIDING THE PRIMARY AND SECONDARY COILS ON EACH LEG BEING SPACED APART, A MAGNETIC LEAKAGE SHUNT EXTENDING FROM ONE LONG LEG TO THE OTHER IN THE SPACE BETWEEN COILS, AND A PARTIALLY BRIDGED GAP IN THE PORTION OF EACH LONG LEG INSIDE A SECONDARY COIL, THE GAP BEING FORMED BY LAMINATIONS WHOSE ENDS ARE SPACED APART FROM EACH OTHER AND BRIDGED BY LAMINATIONS WHICH EXTEND ACROSS THE GAP TO MEET CORRESPONDING LAMINATIONS IN A BUTT JOINT BEYOND THE AIR GAP AND INTERLEAVED WITH THE OTHER LAMINATIONS.
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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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |