US3135937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetically sealed variable impedance with stationary coil and axially movable threaded core
Assignee: Cambridge Thermionic Corp
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Filing: 1960-07-08
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Granted: 1964-06-02
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Expires: 1980-07-08
Abstract
No abstract record available.
Inventors
- 👤 Habsburg Dominic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:34
CPC Classifications
H; H01; H01F; H01F17/00; H01F17/04; H01F17/043; H01F21/00; H01F21/02; H01F21/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
IN A VARIABLE IMPEDANCE DEVICE HAVING IN KNOWN MANNER A HOLLOW CASING, TUBE MEANS MOUNTED WITHIN SAID CASING, A FIRST IMPEDANCE MEANS COMPONENT MOUNTED IN FIXED RELATION TO SAID TUBE MEANS, AND A SECOND IMPEDANCE MEANS COMPONENT ADAPTED TO MOVE AXIALLY RELATIVELY TO SAID TUBE MEANS, THE IMPROVEMENT COMPRISING: A THREAD ON THE INSIDE OF SAID CASING; WING MEANS EXTENDING FROM SAID SECOND COMPONENT AND THREADEDLY ENGAGING SAID THREAD ON THE INSIDE OF THE CASING; AND ADJUSTING MEANS EXTENDING ROTATABLY BETWEEN SAID SECOND COMPONENT AND SAID CASING AT EITHER SIDE OF SAID WING MEANS, AND ENGAGING THE WING MEANS FOR AXIALLY SLIDING AND ROTATORY MOVEMENT OF THE SECOND COMPONENT;
Claim 2
Dependent Claim
109 words
IN A VARIABLE IMPEDANCE DEVICE HAVING IN KNOWN MANNER A HOLLOW CASING, TUBE MEANS MOUNTED WITHIN SAID CASING, A FIRST IMPEDANCE MEANS COMPONENT MOUNTED IN FIXED RELATION TO SAID TUBE MEANS, AND A SECOND IMPEDANCE MEANS COMPONENT ADAPTED TO MOVE AXIALLY RELATIVELY TO SAID TUBE MEANS, THE IMPROVEMENT COMPRISING: A THREAD ON THE INSIDE OF SAID CASING; WING MEANS EXTENDING FROM SAID SECOND COMPONENT AND THREADEDLY ENGAGING SAID THREAD ON THE INSIDE OF THE CASING; AND ADJUSTING MEANS EXTENDING ROTATABLY BETWEEN SAID SECOND COMPONENT AND SAID CASING AT EITHER SIDE OF SAID WING MEANS, AND ENGAGING THE WING MEANS FOR AXIALLY SLIDING AND ROTATORY MOVEMENT OF THE SECOND COMPONENT;
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) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |