Patent US4413091A successfully refreshed from Google Patents.
Patent US3239782A successfully refreshed from Google Patents.
US3239782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inductors capable of having their inductances adjusted
Assignee: Varian Medical Systems Inc
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Filing: 1962-01-02
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Granted: 1966-03-08
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Expires: 1982-01-02
Abstract
No abstract record available.
Inventors
- 👤 Gustave W Henke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:16
CPC Classifications
H; H01; H01F; H01F17/00; H01F17/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
AN INDUCTOR COMPRISING A SUBSTANTIALLY CYLINDRICAL ENCAPSULATING MEANS HAVING OPPOSITE CLOSED ENDS, AT LEAST ONE WINDING LOCATED IN AND EXTENDING AXIALLY OF SAID ENCAPSULATING MEANS, SAID WINDING HAVING TERMINAL LEADS PROJECTING THROUGH AT LEAST ONE SAID CLOSED ENDS OF SAID ENCAPSULATING MEANS, SAID LEADS BEING THE ONLY ELEMENTS WHICH PROJECT FROM THE INTERIOR OF SAID ENCAPSULATING MEANS OUTWARDLY THROUGH AND BEYOND SAID CLOSED ENDS THEREOF, AND AT LEAST ONE METALLIC RING CIRCUMFERENTIALLY SURROUNDING SAID ENCAPSULATING MEANS AND SAID WINDING THEREIN AND BEING AXIALLY MOVABLE ALONG SAID ENCAPSULATNG MEANS BETWEEN SAID ENDS THEREOF, WHEREBY SAID RING WILL ALSO MOVE AXIALLY OF SAID WINDING FOR ADJUSTING THE INDUCTANCE THEREOF, SAID RING CONSTITUTING THE ONLY MEANS BY WHICH SAID INDUCTANCE CAN BE ADJUSTED.
Claim 2
Dependent Claim
120 words
AN INDUCTOR COMPRISING A SUBSTANTIALLY CYLINDRICAL ENCAPSULATING MEANS HAVING OPPOSITE CLOSED ENDS, AT LEAST ONE WINDING LOCATED IN AND EXTENDING AXIALLY OF SAID ENCAPSULATING MEANS, SAID WINDING HAVING TERMINAL LEADS PROJECTING THROUGH AT LEAST ONE SAID CLOSED ENDS OF SAID ENCAPSULATING MEANS, SAID LEADS BEING THE ONLY ELEMENTS WHICH PROJECT FROM THE INTERIOR OF SAID ENCAPSULATING MEANS OUTWARDLY THROUGH AND BEYOND SAID CLOSED ENDS THEREOF, AND AT LEAST ONE METALLIC RING CIRCUMFERENTIALLY SURROUNDING SAID ENCAPSULATING MEANS AND SAID WINDING THEREIN AND BEING AXIALLY MOVABLE ALONG SAID ENCAPSULATNG MEANS BETWEEN SAID ENDS THEREOF, WHEREBY SAID RING WILL ALSO MOVE AXIALLY OF SAID WINDING FOR ADJUSTING THE INDUCTANCE THEREOF, SAID RING CONSTITUTING THE ONLY MEANS BY WHICH SAID INDUCTANCE CAN BE ADJUSTED.
References Cited (Backward Citations)
US2753532A
Cited
US2885643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |