US3286153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Converter system for eliminating common mode induction voltage
Assignee: Hitachi Ltd
•
Filing: 1963-10-09
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Granted: 1966-11-15
•
Expires: 1983-10-09
Abstract
No abstract record available.
Inventors
- 👤 Inose Fumiyuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:37
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/38; H03F3/387; H01; H01F; H01F27/00; H01F27/34; H01F27/36; H01F27/363; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/06; H02M7/068; H03F1/00; H03F1/30; H03F1/303
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
AN EXCITATION SYSTEM OPERATIVE FREE FROM COMMON MODE INDUCTION VOLTAGE COMPRISING A D.-C. TO A.-C. CONVERTER CIRCUIT DESIGNED FOR OPERATING AT SUB-RADIO FREQUENCIES, SAID CONVERTER CIRCUIT INCLUDING AN OUTPUT TRANSFORMER HAVING A TOROIDAL IRON CORE AND INPUT AND OUTPUT WINDINGS WOUND THEREON AND INDUCTIVELY INTERCOUPLED, SAID INPUT WINDING BEING FORMED OF A CONVENTIONAL SINGLE CONDUCTOR INSULATED WIRE AND SAID OUTPUT WINDING BEING FORMED OF A CONVENTIONAL COAXIAL SHIELDED WIRE SO ARRANGED THAT A VOLTAGE IS ELECTROMAGNETICALLY INDUCED IN THE CORE CONDUCTOR OF SAID SHIELDED WIRE BY THE INPUT WINDING, AND A POINT ON THE OUTER SHIELDING CONDUCTOR OF SAID OUTPUT SHIELDED WIRE IS LED TO A POINT OF COMMON GROUND POTENTIAL.
Claim 2
Dependent Claim
111 words
AN EXCITATION SYSTEM OPERATIVE FREE FROM COMMON MODE INDUCTION VOLTAGE COMPRISING A D.-C. TO A.-C. CONVERTER CIRCUIT DESIGNED FOR OPERATING AT SUB-RADIO FREQUENCIES, SAID CONVERTER CIRCUIT INCLUDING AN OUTPUT TRANSFORMER HAVING A TOROIDAL IRON CORE AND INPUT AND OUTPUT WINDINGS WOUND THEREON AND INDUCTIVELY INTERCOUPLED, SAID INPUT WINDING BEING FORMED OF A CONVENTIONAL SINGLE CONDUCTOR INSULATED WIRE AND SAID OUTPUT WINDING BEING FORMED OF A CONVENTIONAL COAXIAL SHIELDED WIRE SO ARRANGED THAT A VOLTAGE IS ELECTROMAGNETICALLY INDUCED IN THE CORE CONDUCTOR OF SAID SHIELDED WIRE BY THE INPUT WINDING, AND A POINT ON THE OUTER SHIELDING CONDUCTOR OF SAID OUTPUT SHIELDED WIRE IS LED TO A POINT OF COMMON GROUND POTENTIAL.
References Cited (Backward Citations)
US1474382A
Cited
US2553324A
Cited
US3066266A
Cited
US3065431A
Cited
US3149296A
Cited
US3197723A
Cited
US3244960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |