US3309613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuously adjustable vhf/uhf television tuner
Assignee: Zenith Electronics LLC
•
Filing: 1966-07-29
•
Granted: 1967-03-14
•
Expires: 1986-07-29
Abstract
No abstract record available.
Inventors
- 👤 John F Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:58
CPC Classifications
H; H03; H03J; H03J5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A SYSTEM FOR SELECTIVELY TUNING A TELEVISION RECEIVER TO ANY CHANNEL WITHIN THE VHF AND UHF FREQUENCY BANDS COMPRISING: A SHIELD HOUSING HAVING PARTITIONS WHICH DEFINE RADIO FREQUENCY, OSCILLATOR AND MIXER COMPARTMENTS; ADJUSTABLE TUNING ARRANGEMENTS IN EACH OF SAID COMPARTMENTS INDIVIDUALLY COMPRISNG A ROTATABLE TUNING SHAFT THAT IS COMMON TO ALL SAID COMPARTMENTS, A UHF TUNER CONTINUOUSLY ADJUSTABLE OVER THE ENTIRE UHF BAND HAVING A ROTOR SUPPORTED ON SAID SHAFT AND HAVING A STATOR POSITIONED WITHIN SAID COMPARTMENT TO HAVE EFFECTIVE COUPLING WITH SAID UHF ROTOR OVER A FIRST RANGE OF ANGULAR DISPLACEMENTS OF SAID SHAFT, A VHF TUNER CONTINUOUSLY ADJUSTABLE OVER TWO BAND SEGMENTS WHICH COLLECTIVELY DEFINE THE VHF BAND AND INCLUDING A COMMON ROTOR SUPPORTED ON SAID SHAFT AND A PAIR OF STATORS ANGULARLY DISPLACED FROM ONE ANOTHER ALONG THE PATH OF MOVEMENT OF SAID VHF ROTOR AND POSITIONED WITHIN SAID COMPARTMENT TO HAVE EFFECTIVE COUPLING WITH SAID VHF ROTOR OVER A SECOND AND A THIRD RANGE OF ANGULAR DISPLACE-
Claim 2
Independent Claim
162 words
A SYSTEM FOR SELECTIVELY TUNING A TELEVISION RECEIVER TO ANY CHANNEL WITHIN THE VHF AND UHF FREQUENCY BANDS COMPRISING: A SHIELD HOUSING HAVING PARTITIONS WHICH DEFINE RADIO FREQUENCY, OSCILLATOR AND MIXER COMPARTMENTS; ADJUSTABLE TUNING ARRANGEMENTS IN EACH OF SAID COMPARTMENTS INDIVIDUALLY COMPRISNG A ROTATABLE TUNING SHAFT THAT IS COMMON TO ALL SAID COMPARTMENTS, A UHF TUNER CONTINUOUSLY ADJUSTABLE OVER THE ENTIRE UHF BAND HAVING A ROTOR SUPPORTED ON SAID SHAFT AND HAVING A STATOR POSITIONED WITHIN SAID COMPARTMENT TO HAVE EFFECTIVE COUPLING WITH SAID UHF ROTOR OVER A FIRST RANGE OF ANGULAR DISPLACEMENTS OF SAID SHAFT, A VHF TUNER CONTINUOUSLY ADJUSTABLE OVER TWO BAND SEGMENTS WHICH COLLECTIVELY DEFINE THE VHF BAND AND INCLUDING A COMMON ROTOR SUPPORTED ON SAID SHAFT AND A PAIR OF STATORS ANGULARLY DISPLACED FROM ONE ANOTHER ALONG THE PATH OF MOVEMENT OF SAID VHF ROTOR AND POSITIONED WITHIN SAID COMPARTMENT TO HAVE EFFECTIVE COUPLING WITH SAID VHF ROTOR OVER A SECOND AND A THIRD RANGE OF ANGULAR DISPLACE-
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |