US3213340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor driven hermetically sealed variable capacitor
Assignee: Jennings Radio Manufacturing Corp
•
Filing: 1962-10-03
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Granted: 1965-10-19
•
Expires: 1982-10-03
Abstract
No abstract record available.
Inventors
- 👤 David D Robertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:31
CPC Classifications
H; H01; H01G; H01G5/00; H01G5/01; H01G5/013
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A MOTOR DRIVEN CAPACITOR COMPRISING: (A) AN HERMETICALLY SELATED ENVELOPE INCLUDING (1) A TUBULAR DIELECTRIC PORTION AND (2) METALLIC END CAPS CLOSING OPPOSITE ENDS OF THE TUBULAR DIELECTRIC PORTION, (B) A SET OF CONCENTRICALLY ARRANGED FIXED CONDENSER PLATES FIXED TO ONE OF THE END CAPS, (C) A SET OF CONCENTRICALLY ARRNAGED MOBILE CONDENSER PLATES CONNECTED TO THE OTHER END CAP, (D) MEANS WITHIN THE EVELOPE OPERATIVE TO EFFECT AXIAL DISPLACEMENT OF THE MOBILE CONDENCSER PLATES AND INCLUDING (1) A SHAFT HAVING OPPOSITE ENDS JOURNALED FOR ROTATION ON OPPOSITE END CAPS AND HELD CAPTIVE AGAINST AXIAL DISPLACEMENT, AND (2) THRUST MEANS OPERATIVELY INTERPOSED BETWEEN THE SHAFT AND MOBILE CONDENSER PLATES TO EFFECT
Claim 2
Dependent Claim
111 words
A MOTOR DRIVEN CAPACITOR COMPRISING: (A) AN HERMETICALLY SELATED ENVELOPE INCLUDING (1) A TUBULAR DIELECTRIC PORTION AND (2) METALLIC END CAPS CLOSING OPPOSITE ENDS OF THE TUBULAR DIELECTRIC PORTION, (B) A SET OF CONCENTRICALLY ARRANGED FIXED CONDENSER PLATES FIXED TO ONE OF THE END CAPS, (C) A SET OF CONCENTRICALLY ARRNAGED MOBILE CONDENSER PLATES CONNECTED TO THE OTHER END CAP, (D) MEANS WITHIN THE EVELOPE OPERATIVE TO EFFECT AXIAL DISPLACEMENT OF THE MOBILE CONDENCSER PLATES AND INCLUDING (1) A SHAFT HAVING OPPOSITE ENDS JOURNALED FOR ROTATION ON OPPOSITE END CAPS AND HELD CAPTIVE AGAINST AXIAL DISPLACEMENT, AND (2) THRUST MEANS OPERATIVELY INTERPOSED BETWEEN THE SHAFT AND MOBILE CONDENSER PLATES TO EFFECT
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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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |