US3377565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable high-frequency transformer
Assignee: Patelhold Patenverwertungs and Elektro-Holding AG
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Filing: 1966-12-23
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Granted: 1968-04-09
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Expires: 1986-12-23
Abstract
No abstract record available.
Inventors
- 👤 Denner Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:30
CPC Classifications
H; H01; H01F; H01F21/00; H01F21/02; H01F21/04; H03; H03B; H03B5/00; H03B5/18; H03B5/1817; H03B5/1835; H03H; H03H2/00; H03H2/005; H03H2/006; H05; H05B; H05B6/00; H05B6/02; H05B6/04; H05B6/46; H05B6/48
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
A VARIABLE HIGH FREQUENCY POWER TRANSFORMER COMPRISING IN COMBINATION: (1) A FIRST CYLINDRICAL STATIONARY WINDING, (2) A SECOND CYLINDRICAL MOVABLE WINDING CONCENTRIC WITH SAID FIRST WINDING, (3) CONNECTING TERMINAL MEANS FOR SAID SECOND WINDING CONSTITUTED BY A PAIR OF STATIONARY SPACED AND ELECTRICALLY CONDUCTING ELONGATED MEMBERS PARALLEL TO THE AXIS OF SAID WINDINGS, (4) A PAIR OF CONDUCTING SUPPORTING MEMBERS EACH RIGIDLY CONNECTED TO AN END OF SAID SECOND WINDING, AND (5) MEANS TO SLIDABLY AND ADJUSTABLY MOUNT SAID MEMBERS EACH IN MECHANICAL AND ELECTRICAL CONTACT ENGAGEMENT WITH ONE OF SAID RAILS.
References Cited (Backward Citations)
US2662162A
Cited
US2681438A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |