US3328720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual mode oscillator circuits
Assignee: Westinghouse Electric Corp
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Filing: 1965-07-15
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Granted: 1967-06-27
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Expires: 1985-07-15
Abstract
No abstract record available.
Inventors
- 👤 Arnt P Arntsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:55
CPC Classifications
H; H03; H03J; H03J5/00; H03J5/24; H03J5/242; H03B; H03B5/00; H03B5/08; H03B5/12; H03B5/1203; H03B5/1231; H03B5/1237; H03B5/124; H03B5/1262; H03B5/1268
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
AN OSCILLATOR CIRCUIT OPERATIVE TO OSCILLATE IN AT LEAST TWO MODES AND TUNABLE TO FREQUENCIES WITHIN AT LEAST TWO FREQUENCY BANDS COMPRISING: SIGNAL AMPLIFYING MEANS FOR SUPPLYING OSCILLATORY ENERGY; A RESONANT CIRCUIT OPERATIVE TO RECEIVE ENERGY FROM SAID SIGNAL AMPLIFYING MEANS AND TUNABLE TO FREQUENCIES WITHIN EACH OF SAID FREQUENCY BANDS AND INCLUDING A VARIABLE CAPACITOR FOR TUNING TO FREQUENCIES WITHIN EACH OF SAID FREQUENCY BANDS, A DISTRIBUTED LINE INDUCTOR CONNECTED TO SAID CAPACITOR FOR PROVIDING INDUCTIVE REACTANCE FOR TUNING AT FREQUENCIES WITHIN ONE OF SAID FREQUENCY BANDS BUT PROVIDING SUBSTANTIALLY NO INDUCTIVE REACTANCE FOR TUNING AT FREQUENCIES WITHIN ANOTHER OF SAID FREQUENCY BANDS, A TUNING INDUCTOR OPERATIVELY CONNECTED TO SAID CAPACITOR AND SAID DISTRIBUTED LINE INDUCTOR FOR PROVIDING INDUCTIVE REACTANCE FOR TUNING WITHIN THE OTHER OF SAID BANDS; AND MODE SELECTION MEANS OPERATIVELY CONNECTED BETWEEN SAID SIGNAL AMPLIFYING MEANS AND SAID RESONANT CIRCUIT FOR ESTABLISHING PROPER OSCILLATORY CONDITIONS TO SUSTAIN OSCILLATION AT A DESIRED MODE OF OSCILLATION OF SAID OSCILLATOR CIRCUIT WHILE PROHIBITING OSCILLATION OF SAID OSCILLATOR CIRCUIT AT UNDESIRED MODES.
Claim 2
Dependent Claim
172 words
AN OSCILLATOR CIRCUIT OPERATIVE TO OSCILLATE IN AT LEAST TWO MODES AND TUNABLE TO FREQUENCIES WITHIN AT LEAST TWO FREQUENCY BANDS COMPRISING: SIGNAL AMPLIFYING MEANS FOR SUPPLYING OSCILLATORY ENERGY; A RESONANT CIRCUIT OPERATIVE TO RECEIVE ENERGY FROM SAID SIGNAL AMPLIFYING MEANS AND TUNABLE TO FREQUENCIES WITHIN EACH OF SAID FREQUENCY BANDS AND INCLUDING A VARIABLE CAPACITOR FOR TUNING TO FREQUENCIES WITHIN EACH OF SAID FREQUENCY BANDS, A DISTRIBUTED LINE INDUCTOR CONNECTED TO SAID CAPACITOR FOR PROVIDING INDUCTIVE REACTANCE FOR TUNING AT FREQUENCIES WITHIN ONE OF SAID FREQUENCY BANDS BUT PROVIDING SUBSTANTIALLY NO INDUCTIVE REACTANCE FOR TUNING AT FREQUENCIES WITHIN ANOTHER OF SAID FREQUENCY BANDS, A TUNING INDUCTOR OPERATIVELY CONNECTED TO SAID CAPACITOR AND SAID DISTRIBUTED LINE INDUCTOR FOR PROVIDING INDUCTIVE REACTANCE FOR TUNING WITHIN THE OTHER OF SAID BANDS; AND MODE SELECTION MEANS OPERATIVELY CONNECTED BETWEEN SAID SIGNAL AMPLIFYING MEANS AND SAID RESONANT CIRCUIT FOR ESTABLISHING PROPER OSCILLATORY CONDITIONS TO SUSTAIN OSCILLATION AT A DESIRED MODE OF OSCILLATION OF SAID OSCILLATOR CIRCUIT WHILE PROHIBITING OSCILLATION OF SAID OSCILLATOR CIRCUIT AT UNDESIRED MODES.
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) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |