US3293576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3 to 8 megahertz miniature tuner
Assignee: Individual
•
Filing: 1965-01-12
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Granted: 1966-12-20
•
Expires: 1985-01-12
Abstract
No abstract record available.
Inventors
- 👤 Harold T Lyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:52
CPC Classifications
H; H01; H01F; H01F21/00; H01F21/02; H01F21/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A VARIABLE INDUCTANCE TUNER COMPRISING: AN INDUCTANCE COIL HAVING A FIRST END AND A SECOND END; A THIN FERRITE SHEEL SURROUNDING SAID COIL AND EXTENDING BEYOND BOTH ENDS THEREOF; A FIRST FERRITE RING ABUTTING THE FIRST END OF SAID COIL, A PORTION OF SAID FIRST RING EXTENDING WITHIN SAID FERRITE SHELL; AN INNER MOVABLE TUNING CORE; MOVING MEANS CONNECTED TO ONE END OF SAID CORE FOR MOVING SAID MOVABLE CORE WITHIN SAID COIL FROM THE SECOND END THEREOF; AND A SECOND FERRITE RING BEING MOUNTED ON THE END OF SAID MOVABLE CORE WHICH EXTENDS FROM SAID COIL, THE MAGNETIC CIRCUIT BEING NEARLY COMPLETED BY SAID MOVABLE CORE, SAID FIRST AND SECOND FERRITE RINGS AND SAID FERRITE SHELL AT THE LOWEST TUNED FREQUENCY.
Claim 2
Dependent Claim
122 words
A VARIABLE INDUCTANCE TUNER COMPRISING: AN INDUCTANCE COIL HAVING A FIRST END AND A SECOND END; A THIN FERRITE SHEEL SURROUNDING SAID COIL AND EXTENDING BEYOND BOTH ENDS THEREOF; A FIRST FERRITE RING ABUTTING THE FIRST END OF SAID COIL, A PORTION OF SAID FIRST RING EXTENDING WITHIN SAID FERRITE SHELL; AN INNER MOVABLE TUNING CORE; MOVING MEANS CONNECTED TO ONE END OF SAID CORE FOR MOVING SAID MOVABLE CORE WITHIN SAID COIL FROM THE SECOND END THEREOF; AND A SECOND FERRITE RING BEING MOUNTED ON THE END OF SAID MOVABLE CORE WHICH EXTENDS FROM SAID COIL, THE MAGNETIC CIRCUIT BEING NEARLY COMPLETED BY SAID MOVABLE CORE, SAID FIRST AND SECOND FERRITE RINGS AND SAID FERRITE SHELL AT THE LOWEST TUNED FREQUENCY.
References Cited (Backward Citations)
US2717984A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |