Patent US3249832A successfully refreshed from Google Patents.
US3249832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable capacitor
Assignee: Individual
•
Filing: 1964-05-26
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Granted: 1966-05-03
•
Expires: 1984-05-26
Abstract
No abstract record available.
Inventors
- 👤 Inoue Kiyoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:36
CPC Classifications
H; H01; H01G; H01G5/00; H01G5/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A VARIABLE CAPACITOR, COMPRISING AN ASSEMBLY OF STACKED PAIRS OF SPACEDLY JUXTAPOSED CONDENSER PLATES, AT LEAST ONE OF THE PLATES OF EACH PAIR BEING OF GENERALLY WAVY CONFIGURATION WITH AT LEAST ONE COMPLETE UNDULATION HAVING A PEAK AND A TROUGH AND APPROACHING THE OTHER PLATE OF EACH PAIR AT SPACED-APART LOCATIONS; RESPECTIVE GENERALLY COLPANAR SPACER MEMBERS INTERPOSED BETWEEN THE PLATES OF EACH PAIR AT EACH OF SAID LOCATIONS FOR MAINTAINING SAID PLATES IN SPACED RELATIONSHIP, SAID SPACER MEMBERS OF EACH PAIR BEING DISPLACEABLE REALTIVE TO ONE ANOTHER IN THEIR COMMON PLANE; AND CAPACITANCE-CONTROL MEANS FOR SELECTIVELY COMPRESSING AND DISTENDING SAID ASSEMBLY GENERALLY TRANSVERSELY TO SAID PLANES, SAID CAPACITANCE-CONTROL MEANS INCLUDING AT LEAST ONE PRESSURE MEMBER ENGAGEABLE WITH ONE OF SAID PLATES OF WAVY CONFIGURATION AT AN END OF SAID ASSEMBLY AND EXTENDING OVER A PLURALITY OF PEAKS THEREOF, AND MEANS FOR DISPLACING SAID PRESSURE MEMBER PERPENDICULAR TO SAID PLANES.
Claim 2
Dependent Claim
149 words
A VARIABLE CAPACITOR, COMPRISING AN ASSEMBLY OF STACKED PAIRS OF SPACEDLY JUXTAPOSED CONDENSER PLATES, AT LEAST ONE OF THE PLATES OF EACH PAIR BEING OF GENERALLY WAVY CONFIGURATION WITH AT LEAST ONE COMPLETE UNDULATION HAVING A PEAK AND A TROUGH AND APPROACHING THE OTHER PLATE OF EACH PAIR AT SPACED-APART LOCATIONS; RESPECTIVE GENERALLY COLPANAR SPACER MEMBERS INTERPOSED BETWEEN THE PLATES OF EACH PAIR AT EACH OF SAID LOCATIONS FOR MAINTAINING SAID PLATES IN SPACED RELATIONSHIP, SAID SPACER MEMBERS OF EACH PAIR BEING DISPLACEABLE REALTIVE TO ONE ANOTHER IN THEIR COMMON PLANE; AND CAPACITANCE-CONTROL MEANS FOR SELECTIVELY COMPRESSING AND DISTENDING SAID ASSEMBLY GENERALLY TRANSVERSELY TO SAID PLANES, SAID CAPACITANCE-CONTROL MEANS INCLUDING AT LEAST ONE PRESSURE MEMBER ENGAGEABLE WITH ONE OF SAID PLATES OF WAVY CONFIGURATION AT AN END OF SAID ASSEMBLY AND EXTENDING OVER A PLURALITY OF PEAKS THEREOF, AND MEANS FOR DISPLACING SAID PRESSURE MEMBER PERPENDICULAR TO SAID PLANES.
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Cited
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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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |