US3343074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toroidal variable reactance transformer having two saturable cores
Assignee: HUNTERDON TRANSFORMER Co
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Filing: 1964-07-07
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Granted: 1967-09-19
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Expires: 1984-07-07
Abstract
No abstract record available.
Inventors
- 👤 Elwood M Brock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:03
CPC Classifications
H; H01; H01F; H01F29/00; H01F29/14; H01F29/143
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
113 words
IN A HIGH-POWER VARIABLE REACTANCE TRANSFORMER, AN ANNULAR MAIN CORE HAVING AN AXIS AND A PAIR OF ANNULAR AUXILIARY CORES COAXIAL WITH SAID MAIN CORE AND ADJACENT THERETO, A CONTROL WINDING SURROUNDING EACH OF SAID AUXILIARY CORES AND CONNECTED IN SERIES OPPOSITION, A SECONDARY WINDING SURROUNDING ONLY SAID MAIN CORE FOR ISOLATION FROM SAID CONTROL WINDINGS, AND A UNITARY PRIMARY WINDING SURROUNDING ALL OF SAID CORES, A VARIABLE SOURCE OF DIRECT CURRENT CONNECTED ACROSS THE SERIES ARRANGEMENT OF SAID CONTROL WINDINGS TO DRIVE THE AUXILIARY CORES BETWEEN A SATURATED AND AN UNSATURATED CONDITION, SAID TRANSFORMER HAVING A LOW REACTANCE IN SAID SATURATED CONDITION AND A HIGH REACTANCE IN SAID UNSATURATED CONDITION, AND AN
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |