USRE28359E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closed loop ferroresohant regulator
Assignee: —
•
Filing: 1971-12-06
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Granted: 1975-03-04
•
Expires: 1991-12-06
Abstract
Abstract 15. A FERRORESONANT TRANSFORMER INCLUDING A MAGNETIC CORE STRUCTURE, A PRIMARY WINDING AND A SECONDARY WINDING WHEREIN THE CORE STRUCTURE WITH THE SECONDARY WINDING INCLUDES TWO SEPARATE SECTIONS PROVIDING PARALLEL MAGNETIC PATHS FOR THE SECONDARY AND RESONANT FLUX, A CONTROL WINDING ON ONE OF SAID SECTIONS, AND SWITCH MEANS FOR OPENING AND CLOSING A CIRCUIT ACROSS SAID CONTROL WINDING, WITH NO CURRENT SOURCE CONNECTED TO SAID CONTROL WINDING WHEREBY THE ONLY CURRENT IN SAID CONTROL WINDING IS SELF INDUCED CURRENT RESULTING FROM FLUX IN SAID ONE SECTION.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:58
CPC Classifications
G; G05; G05F; G05F3/00; G05F3/02; G05F3/04; G05F3/06; G05F1/00; G05F1/10; G05F1/12; G05F1/13
Claims Analysis
Total Claims: 0
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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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |