US3192491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tuneable double-tuned circuits with variable coupling
Assignee: General Dynamics Corp
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Filing: 1962-12-06
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Granted: 1965-06-29
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Expires: 1982-12-06
Abstract
No abstract record available.
Inventors
- 👤 Robert J Hesselberth
- 👤 Floyd A Koontz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:00
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/0153; H03H7/0161
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN A DOUBLE-TUNED BAND-PASS FILTER, A TUNEABLE PRIMARY CIRCUIT INCLUDING A FIRST CONDENSER, A TUNEABLE SECONDARY CIRCUIT INCLUDING A SECOND CONDENSER, THE Q OF SAID CIRCUITS BEING SUBSTANTAILLY EQUAL, MEANS FOR VARYING THE CAPACITY OF SAID FIRST AND SECOND CONDENSERS AS A FUNCTION OF FREQUENCY IN UNISON FOR TUNING SAID CURCURCUITS, A THIRD CONDENSER CONNECTED IN COMMON WITH SAID PRIMARY AND SECONDARY CIRCUITS FOR COUPLING SAID CIRCUITS, AND MEANS FOR VARYING THE CAPACITY OF SAID THIRD CONDENSER AS A NON-LINEAR FUNCTION OF FREQUENCY DIFFERENT FROM SAID FIRSTNAMED FUNCTION WHEREBY TO VARY COEFFICIENT OF COUPLING,
Claim 2
Dependent Claim
94 words
IN A DOUBLE-TUNED BAND-PASS FILTER, A TUNEABLE PRIMARY CIRCUIT INCLUDING A FIRST CONDENSER, A TUNEABLE SECONDARY CIRCUIT INCLUDING A SECOND CONDENSER, THE Q OF SAID CIRCUITS BEING SUBSTANTAILLY EQUAL, MEANS FOR VARYING THE CAPACITY OF SAID FIRST AND SECOND CONDENSERS AS A FUNCTION OF FREQUENCY IN UNISON FOR TUNING SAID CURCURCUITS, A THIRD CONDENSER CONNECTED IN COMMON WITH SAID PRIMARY AND SECONDARY CIRCUITS FOR COUPLING SAID CIRCUITS, AND MEANS FOR VARYING THE CAPACITY OF SAID THIRD CONDENSER AS A NON-LINEAR FUNCTION OF FREQUENCY DIFFERENT FROM SAID FIRSTNAMED FUNCTION WHEREBY TO VARY COEFFICIENT OF COUPLING,
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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) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |