Patent US3275913A successfully refreshed from Google Patents.
US3275913A
Expired / Lapsed
US
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Variable capacitor
Assignee: LRC Electronics Inc
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Filing: 1964-11-20
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Granted: 1966-09-27
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Expires: 1984-11-20
Abstract
No abstract record available.
Inventors
- 👤 Clayton H Blanchard
- 👤 Keith S Mciutosh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:02
CPC Classifications
H; H01; H01G; H01G5/00; H01G5/04; H01G5/12; H01G5/01; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18752
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A TRIMMER CAPACITOR COMPRISING A HOLLOW CONDUCTIVE TUBULAR MEMBER TERMINATED AT ONE END BY A FLAT THREADED TRANSVERSE PORTION, THE OTHER END OF SAID MEMBER BEING OPEN, A PLATE IN A SPACED RELATIONSHIP WITH SAID TRANSVERSE PORTION ALONG THE LONGITUDINAL AXIS THEREOF INTEGRALLY CONNECTED THERETO BY MEANS OF A POST AT ONE EDGE OF SAID PLATE AND TRANSVERSE PORTION, SAID PLATE HAVING THREADS IN REGISTER WITH THE THREADS IN SAID TRANSVERSE PORTION, AN AXIALLY MOVABLE CORE CLOSELY SURROUNDING SAID TUBULAR MEMBER, MEANS DISPOSED BETWEEN SAID TRANSVERSE PORTION AND SAID PLATE FOR EXERTING A FORCE ON SAID PLATE TO CAUSE IT TO FLEX ABOUT SAID POST, A SCREW THREADED THROUGH SAID TRANSVERSE PORTION AND SAID PLATE FIXEDLY CONNECTED TO SAID CORE, A TUBE OF DIELECTRIC MATERIAL CLOSELY SURROUNDING SAID CORE ATTACHED TO SAID TUBULAR MEMBER AT SAID OTHER END THEREOF, AND A CONDUCTIVE COATING ON THE OUTER SURFACE OF SAID TUBE FOR A PORTION OF ITS LENGTH.
Claim 2
Dependent Claim
156 words
A TRIMMER CAPACITOR COMPRISING A HOLLOW CONDUCTIVE TUBULAR MEMBER TERMINATED AT ONE END BY A FLAT THREADED TRANSVERSE PORTION, THE OTHER END OF SAID MEMBER BEING OPEN, A PLATE IN A SPACED RELATIONSHIP WITH SAID TRANSVERSE PORTION ALONG THE LONGITUDINAL AXIS THEREOF INTEGRALLY CONNECTED THERETO BY MEANS OF A POST AT ONE EDGE OF SAID PLATE AND TRANSVERSE PORTION, SAID PLATE HAVING THREADS IN REGISTER WITH THE THREADS IN SAID TRANSVERSE PORTION, AN AXIALLY MOVABLE CORE CLOSELY SURROUNDING SAID TUBULAR MEMBER, MEANS DISPOSED BETWEEN SAID TRANSVERSE PORTION AND SAID PLATE FOR EXERTING A FORCE ON SAID PLATE TO CAUSE IT TO FLEX ABOUT SAID POST, A SCREW THREADED THROUGH SAID TRANSVERSE PORTION AND SAID PLATE FIXEDLY CONNECTED TO SAID CORE, A TUBE OF DIELECTRIC MATERIAL CLOSELY SURROUNDING SAID CORE ATTACHED TO SAID TUBULAR MEMBER AT SAID OTHER END THEREOF, AND A CONDUCTIVE COATING ON THE OUTER SURFACE OF SAID TUBE FOR A PORTION OF ITS LENGTH.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |