US3304472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable capacitor
Assignee: Globe Union Inc
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Filing: 1965-04-28
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Granted: 1967-02-14
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Expires: 1985-04-28
Abstract
No abstract record available.
Inventors
- 👤 Sperry Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:38
CPC Classifications
H; H01; H01G; H01G5/00; H01G5/04; H01G5/12; H01G5/01; H01G5/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A VARIABLE CAPACITOR COMPRISING A HOUSING, A FIXED CAPACITOR PLATE DISPOSED WITHIN SAID HOUSING, AN INSULATING DIELECTRIC SUPPORT MEMBER OF UNIFORM PREDETERMINED THICKNESS ROTATABLY MOUNTED WITHIN SAID HOUSING AND SUBSTANTIALLY COMPLETELY ENCLOSED THEREBY, A SECOND CAPACITOR PLATE CARRIED BY SAID SUPPORT MEMBER, SAID FIXED CAPACITOR PLATE AND SAID SECOND CAPACITOR PLATE WITH SAID SUPPORT MEMBER DISPOSED THEREBETWEEN COMPRISING A VARIABLE CAPACITOR, RESILIENT MEANS DISPOSED IN SAID HOUSING AND URGING SAID SUPPORT MEMBER INTO INTIMATE ENGAGEMENT WITH SAID FIXED CAPACITOR PLATE, AND DRIVE MEANS MOUNTED IN SAID HOUSING, OPERATIVELY CONNECTED TO SAID SUPPORT MEMBER TO EFFECT ROTATION THEREOF, AND HAVING AN ENGAGEABLE PORTION EXTERNALLY DISPOSED IN SAID HOUSING.
Claim 2
Dependent Claim
107 words
A VARIABLE CAPACITOR COMPRISING A HOUSING, A FIXED CAPACITOR PLATE DISPOSED WITHIN SAID HOUSING, AN INSULATING DIELECTRIC SUPPORT MEMBER OF UNIFORM PREDETERMINED THICKNESS ROTATABLY MOUNTED WITHIN SAID HOUSING AND SUBSTANTIALLY COMPLETELY ENCLOSED THEREBY, A SECOND CAPACITOR PLATE CARRIED BY SAID SUPPORT MEMBER, SAID FIXED CAPACITOR PLATE AND SAID SECOND CAPACITOR PLATE WITH SAID SUPPORT MEMBER DISPOSED THEREBETWEEN COMPRISING A VARIABLE CAPACITOR, RESILIENT MEANS DISPOSED IN SAID HOUSING AND URGING SAID SUPPORT MEMBER INTO INTIMATE ENGAGEMENT WITH SAID FIXED CAPACITOR PLATE, AND DRIVE MEANS MOUNTED IN SAID HOUSING, OPERATIVELY CONNECTED TO SAID SUPPORT MEMBER TO EFFECT ROTATION THEREOF, AND HAVING AN ENGAGEABLE PORTION EXTERNALLY DISPOSED IN SAID HOUSING.
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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |