US3213399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flyback transformers
Assignee: RCA Corp
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Filing: 1962-07-17
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Granted: 1965-10-19
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Expires: 1982-07-17
Abstract
No abstract record available.
Inventors
- 👤 Robert E Hurley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:31
CPC Classifications
H; H01; H01F; H01F30/00; H01F30/02; H01F38/00; H01F38/42; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
148 words
A FLYBACK TRANSFORMER COMPRISING IN COMBINATION: A BI-PART MAGNETIC CORE INCLUDING A PAIR OF SUBSTANTIALLY C-SHAPED FERRITE CORE SECTIONS JUXTAPOSED TO FORM A COMPOSITE CORE HAVING A PLURALITY OF LEGS AND EXHIBITING A SUBSTANTIALLY RECTANGULAR OUTER PERIPHERY; SAID CORE SECTIONS MOLDED TO FORM THEREBETWEEN A WINDOW HAVING A PAIR OF SUBSTANTIALLY SQUARE CORNERS AND A PAIR OF ARCUATE CORNERS; A LOW VOLTAGE COIL WOUND AROUND THE LEG OF SAID COMPOSITE CORE DEFINED BY SAID SQUARE CORNERS; AND A HIGH VOLTAGE COIL HAVING A PLURALITY OF TURNS AND OVERWOUND IN A MULTILAYERED DISC CONFIGURATION AROUND SAID LOW VOLTAGE COIL, THE RADIAL DISTANCE FROM THE OUTERMOST TURN OF SAID HIGH VOLTAGE COIL TO THE ARCUATE CORNERS OF SAID WINDOW BEING THE LEAST SPACING BETWEEN SAID COMPOSITE CORE AND SAID OUTERMOST TURN AND SELECTED TO ESTABLISH A PREDETERMINED POTENTIAL GRADIENT LESS THAN THE BREAKDOWN POTENTIAL GRADIENT OF THE AIR SPACE THEREBETWEEN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |