Patent US3968408A successfully refreshed from Google Patents.
US3968408A
Expired / Lapsed
US
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Neutralizing transformer
Assignee: Individual
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Filing: 1974-10-02
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Granted: 1976-07-06
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Expires: 1994-10-02
Abstract
Abstract A neutralizing transformer comprising a flat ribbon-like conductor cable having a plurality of flexible conductors, either flat or round, encapsulated in insulation with a flexible conductor shield or ground plane coextensive with the width of the cable, said transformer being formed by coiling such flexible ribbon-like conductor cable and utilizing the shield as the transformer primary with the flexible conductors as the secondaries. The secondaries may be connected in various ways to reduce the mutual capacitance between the conductors while at the same time maintaining a high dielectric withstand capability between the conductors.
Inventors
- 👤 Gordon Y. R. Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:56
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/34; H01F27/36; H01F27/363
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
84 words
A neutralizing transformer comprising: a plurality of conductors embedded in a dielectric and forming a flat ribbon-like cable, a flexible conductor shield coextensive with the width and length of said cable, said cable and shield being wound around a core to form a transformer, said shield forming the primary winding and the plurality of conductors forming the secondary windings, and said primary winding coupled between two spaced-apart grounds whereas said secondary windings are individually coupled to a plurality of frequency sources and frequency receivers.
Claim 2
Dependent Claim
84 words
A neutralizing transformer comprising: a plurality of conductors embedded in a dielectric and forming a flat ribbon-like cable, a flexible conductor shield coextensive with the width and length of said cable, said cable and shield being wound around a core to form a transformer, said shield forming the primary winding and the plurality of conductors forming the secondary windings, and said primary winding coupled between two spaced-apart grounds whereas said secondary windings are individually coupled to a plurality of frequency sources and frequency receivers.
Claim 3
Dependent Claim
23 words
The neutralizing transformer as claimed in claim 1 wherein said conductors are selectively coupled to the shield to reduce capacitance between these conductors.
Claim 4
Dependent Claim
43 words
The neutralizing transformer as claimed in claim 1 wherein said secondary conductors are connected in pairs to pairs of input conductors from a frequency source and wherein said pairs are separated by a conductor connected to said shield to magnetically separate adjacent pairs.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-06 | 1980-01-05 | 1980-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-06 | 1984-01-05 | 1984-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-06 | 1988-01-05 | 1988-07-06 | $7700.00 | Window Closed / Lapsed |