US3254292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamic capacitor type d. c.-a. c. converter
Assignee: Yokogawa Electric Corp
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Filing: 1962-04-18
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Granted: 1966-05-31
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Expires: 1982-04-18
Abstract
No abstract record available.
Inventors
- 👤 Ohata Shuiti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:08
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/54
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
A DYNAMIC CAPACITOR TYPE D.C.-A.C. CONVERTER COMPRISING A DYNAMIC CAPACITOR AT LEAST ONE ELECTRODE OF WHICH IS CONSTRUCTED SO AS TO BE MECHANICALLY VIBRATED, MEANS FOR EXTABLISHING THE VIBRATION OF SAID DYNAMIC CAPACITOR, A SERIES RESONANCE CIRCUIT INLCUDING SAID DYNAMIC CAPACITOR, A COUPLING CAPACITOR AND A PRIMARY WINDING OF A STEP DOWN TRANSFORMER ALL CONNECTED IN SERIES WITH ONE ANOTHER, THE RESONANT FREQUENCY OF SAID SERIES RESONANCE CIRCUIT BEING UNEQUAL TO BUT NEARLY COINCIDING WITH SAID DRIVING VIBRATION FREQUENCY OF SAID DYNAMIC CAPACITOR, AND A LOAD CONNECTED TO THE SECONDARY WINDING OF SAID TRANSFORMER.
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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |