Patent US3277406A successfully refreshed from Google Patents.
US3277406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tuner with particularly located coupling between half-wavelength tank circuit and another circuit
Assignee: Telefunken Patentverwertungs GmbH
•
Filing: 1964-07-13
•
Granted: 1966-10-04
•
Expires: 1984-07-13
Abstract
No abstract record available.
Inventors
- 👤 Ocker Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:21
CPC Classifications
H; H03; H03J; H03J3/00; H03J3/20; H01; H01P; H01P7/00; H01P7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
IN A TUNER COMPRISING AT LEAST ONE HALF-WAVELENGTH TANK CIRCUIT WHICH IS GEOMETRICALLY SHORTED BY THE TUBE OF CIRCUIT CAPACITANCE AND BY THE TUNING CAPACITOR AND IN WHICH RESPECTIVE TRIMMER CAPACITORS ARE CONNECTED AT THOSE POINTS OF THE INNER CONDUCTOR AT WHICH THE VOLTAGE NODES ARE FORMED AT THE LOWEST AND HIGHEST TUNED FREQUENCY, THE IMPROVEMENT THAT THE COUPLING ELEMENT NEEDED FOR COUPLING SAID TANK CIRCUIT TO ANOTHER CIRCUIT IS ARRANGED BETWEEN ONE OF THE TRIMMER CAPACITORS AND THAT END OF THE INNER CONDUCTOR WHICH IS NEAREST THAT TRIMMER CAPACITOR.
Claim 2
Dependent Claim
90 words
IN A TUNER COMPRISING AT LEAST ONE HALF-WAVELENGTH TANK CIRCUIT WHICH IS GEOMETRICALLY SHORTED BY THE TUBE OF CIRCUIT CAPACITANCE AND BY THE TUNING CAPACITOR AND IN WHICH RESPECTIVE TRIMMER CAPACITORS ARE CONNECTED AT THOSE POINTS OF THE INNER CONDUCTOR AT WHICH THE VOLTAGE NODES ARE FORMED AT THE LOWEST AND HIGHEST TUNED FREQUENCY, THE IMPROVEMENT THAT THE COUPLING ELEMENT NEEDED FOR COUPLING SAID TANK CIRCUIT TO ANOTHER CIRCUIT IS ARRANGED BETWEEN ONE OF THE TRIMMER CAPACITORS AND THAT END OF THE INNER CONDUCTOR WHICH IS NEAREST THAT TRIMMER CAPACITOR.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |