US3289057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable capacitor with moving dielectric
Assignee: Cambridge Thermionic Corp
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Filing: 1965-06-09
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Granted: 1966-11-29
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Expires: 1985-06-09
Abstract
No abstract record available.
Inventors
- 👤 William A Melanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:35
CPC Classifications
H; H01; H01G; H01G5/00; H01G5/04; H01G5/12; H01G5/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A VARIABLE CAPACITOR COMPRISING: A HOLLOW ELECTRODE; A GUIDING SLEEVE; TUBULAR SUPPORT MEANS FOR CARRYING SAID HOLLOW ELECTRODE AT ONE END AND SAID GUIDING SLEEVE AT THE OTHER END, AND HAVING THE SAME CROSS SECTIONAL INNER CONFIGURATION AS SAID HOLLOW ELECTRODE; A SECOND ELECTRODE; AN ADJUSTMENT STUD ENGAGING AT ONE END SAID SLEEVE AND CARRYING AT THE OTHER END SAID SECOND ELECTRODE; AND A TUBULAR DIELECTRIC BODY SURROUNDING, AND PERMANENTLY FIXED TO, SAID SECOND ELECTRODE AND SLIDABLE WITHIN SAID HOLLOW ELECTRODE AND SAID SUPPORT MEANS WHICH TOGETHER PROVIDE A CONTINUOUSLY SMOOTH GUIDE FOR THE DIELECTRIC BODY THROUGH ITS ENTIRE PATH OF SLIDING ADJUSTMENT.
Claim 2
Dependent Claim
103 words
A VARIABLE CAPACITOR COMPRISING: A HOLLOW ELECTRODE; A GUIDING SLEEVE; TUBULAR SUPPORT MEANS FOR CARRYING SAID HOLLOW ELECTRODE AT ONE END AND SAID GUIDING SLEEVE AT THE OTHER END, AND HAVING THE SAME CROSS SECTIONAL INNER CONFIGURATION AS SAID HOLLOW ELECTRODE; A SECOND ELECTRODE; AN ADJUSTMENT STUD ENGAGING AT ONE END SAID SLEEVE AND CARRYING AT THE OTHER END SAID SECOND ELECTRODE; AND A TUBULAR DIELECTRIC BODY SURROUNDING, AND PERMANENTLY FIXED TO, SAID SECOND ELECTRODE AND SLIDABLE WITHIN SAID HOLLOW ELECTRODE AND SAID SUPPORT MEANS WHICH TOGETHER PROVIDE A CONTINUOUSLY SMOOTH GUIDE FOR THE DIELECTRIC BODY THROUGH ITS ENTIRE PATH OF SLIDING ADJUSTMENT.
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |