US3242400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Miniature variable capacitors
Assignee: Toko Inc
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Filing: 1964-08-26
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Granted: 1966-03-22
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Expires: 1984-08-26
Abstract
No abstract record available.
Inventors
- 👤 Miwa Kazumasa
- 👤 Uchida Shozo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:15
CPC Classifications
H; H01; H01G; H01G5/00; H01G5/01; H01G5/013; H01G5/0134; H01G5/0138
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A VARIABLE CAPACITOR COMPRISING A STATIONARY CERAMIC PLATE FUNCTIONING AS DIELECTRIC MATERIAL, A METAL ELECTRODE SECURED ON ONE SIDE OF SAID CERAMIC PLATE, A ROTOR ASSEMBLY COOPERATING WITH SAID CERAMIC PLATE AND INCLUDING A SUBSTANTIALLY SEMICIRCULAR ELECTRODE METAL PLATE, A SUBSTANTIALLY SEMICIRCULAR INSULATOR PLATE, AND MEANS TO RESILIENTLY INTERCONNECT SAID METAL ELECTRODE AND INSULATOR PLATE SO AS TO PERMIT THEM TO MOVE INDEPENDENTLY OF EACH OTHER RELATIVE TO THEIR COMMON AXIS; MEANS TO RESILIENTLY URGE SAID ROTOR ASSEMBLY AGAINST THE OPPOSITE SIDE OF SAID CERAMIC PLATE, AND A SHAFT CONNECTED TO SAID ROTOR ASSEMBLY TO SLIDABLY ROTATE IT WITH RESPECT TO SAID CERAMIC PLATE.
Claim 2
Dependent Claim
104 words
A VARIABLE CAPACITOR COMPRISING A STATIONARY CERAMIC PLATE FUNCTIONING AS DIELECTRIC MATERIAL, A METAL ELECTRODE SECURED ON ONE SIDE OF SAID CERAMIC PLATE, A ROTOR ASSEMBLY COOPERATING WITH SAID CERAMIC PLATE AND INCLUDING A SUBSTANTIALLY SEMICIRCULAR ELECTRODE METAL PLATE, A SUBSTANTIALLY SEMICIRCULAR INSULATOR PLATE, AND MEANS TO RESILIENTLY INTERCONNECT SAID METAL ELECTRODE AND INSULATOR PLATE SO AS TO PERMIT THEM TO MOVE INDEPENDENTLY OF EACH OTHER RELATIVE TO THEIR COMMON AXIS; MEANS TO RESILIENTLY URGE SAID ROTOR ASSEMBLY AGAINST THE OPPOSITE SIDE OF SAID CERAMIC PLATE, AND A SHAFT CONNECTED TO SAID ROTOR ASSEMBLY TO SLIDABLY ROTATE IT WITH RESPECT TO SAID CERAMIC PLATE.
References Cited (Backward Citations)
US3175134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |