Patent US3112439A successfully refreshed from Google Patents.
US3112439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flux oscillator transformer with variable shunt
Assignee: Forbro Design Inc
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Filing: 1961-09-19
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Granted: 1963-11-26
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Expires: 1981-09-19
Abstract
No abstract record available.
Inventors
- 👤 Rosin Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:59
CPC Classifications
H; H01; H01F; H01F29/00; H01F29/08; H01F29/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
IN A VOLTAGE REGULATING TRANSFORMER, THE COMBINATION OF, A MAGNETIC CORE STRUCTURE, AN INPUT WINDING COUPLED TO SAID CORE FOR CONNECTING TO A SOURCE OF UNREGULATED ALTERNATING CURRENT, AN OUTPUT WINDING COUPLED TO SAID CORE FOR PROVIDING A REGULATED OUTPUT VOLTAGE, A CAPACITOR IN SHUNT WITH SAID OUTPUT WINDING FOR PROVIDING AN OSCILLATING FLUX IN SAID OUTPUT WINDING IN THE PRESENCE OF A PREDETERMINED FREQUENCY OF ALTERNATION IN SAID SOURCE, AND A MAGNETIC SHUNT ADAPTED TO PROVIDE A WEDGE SHAPED AIR GAP WITH SAID CORE FOR PROVIDING A MAGNETIC SHUNT BETWEEN SAID INPUT WINDING AND SAID OUTPUT WINDING.
Claim 2
Dependent Claim
98 words
IN A VOLTAGE REGULATING TRANSFORMER, THE COMBINATION OF, A MAGNETIC CORE STRUCTURE, AN INPUT WINDING COUPLED TO SAID CORE FOR CONNECTING TO A SOURCE OF UNREGULATED ALTERNATING CURRENT, AN OUTPUT WINDING COUPLED TO SAID CORE FOR PROVIDING A REGULATED OUTPUT VOLTAGE, A CAPACITOR IN SHUNT WITH SAID OUTPUT WINDING FOR PROVIDING AN OSCILLATING FLUX IN SAID OUTPUT WINDING IN THE PRESENCE OF A PREDETERMINED FREQUENCY OF ALTERNATION IN SAID SOURCE, AND A MAGNETIC SHUNT ADAPTED TO PROVIDE A WEDGE SHAPED AIR GAP WITH SAID CORE FOR PROVIDING A MAGNETIC SHUNT BETWEEN SAID INPUT WINDING AND SAID OUTPUT WINDING.
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) | 1966-11-25 | 1967-05-27 | 1967-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-25 | 1971-05-27 | 1971-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-25 | 1975-05-27 | 1975-11-26 | $7700.00 | Window Closed / Lapsed |