US3358284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio-frequency source for simulating vor signals
Assignee: AC Cossor Ltd
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Filing: 1965-12-16
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Granted: 1967-12-12
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Expires: 1985-12-16
Abstract
No abstract record available.
Inventors
- 👤 Millar Robert Mathieso Gemmell
- 👤 Trim Richard Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:38
CPC Classifications
H; H03; H03H; H03H11/00; H03H11/02; H03H11/16; H03H11/20; G; G01; G01S; G01S1/00; G01S1/02; G01S1/022; G01S1/026; G01S1/028; H03C; H03C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A RADIO-FREQUENCY SOURCE FOR SIMULATING VOR SIGNALS, COMPRISING, IN COMBINATION: A PHASE-SHIFT CIRCUIT HAVING INPUT TERMINALS AND A PLURALITY OF PHASE-SHIFT STAGES CONNECTED TO SHIFT THE PHASE OF AN INPUT SIGNAL APPLIED TO SAID INPUT TERMINALS CUMULATIVELY, EACH OF SAID PHASE-SHIFT STAGES HAVING A PAIR OF STAGE-INPUT TERMINALS AND A PAIR OF STAGE-OUTPUT TERMINALS, AND CHANGING THE PHASE OF AN INPUT SIGNAL, BETWEEN SAID PAIRS OF STAGE-INPUT AND STAGE-OUTPUT TERMINALS, BY A PREDETERMINED AMOUNT WHICH IS THE SAME FOR ALL SAID STAGES; SELECTION MEANS FOR SELECTING ANY PAIR OF SAID STAGEOUTPUT TERMINALS TO PROVIDE A SIGNAL WHOSE PHASE IS VARIABLE IN STEPS; A SYNCHRO HAVING AT LEAST TWO STATOR WINDINGS AND A ROTOR WINDING;
Claim 2
Dependent Claim
114 words
A RADIO-FREQUENCY SOURCE FOR SIMULATING VOR SIGNALS, COMPRISING, IN COMBINATION: A PHASE-SHIFT CIRCUIT HAVING INPUT TERMINALS AND A PLURALITY OF PHASE-SHIFT STAGES CONNECTED TO SHIFT THE PHASE OF AN INPUT SIGNAL APPLIED TO SAID INPUT TERMINALS CUMULATIVELY, EACH OF SAID PHASE-SHIFT STAGES HAVING A PAIR OF STAGE-INPUT TERMINALS AND A PAIR OF STAGE-OUTPUT TERMINALS, AND CHANGING THE PHASE OF AN INPUT SIGNAL, BETWEEN SAID PAIRS OF STAGE-INPUT AND STAGE-OUTPUT TERMINALS, BY A PREDETERMINED AMOUNT WHICH IS THE SAME FOR ALL SAID STAGES; SELECTION MEANS FOR SELECTING ANY PAIR OF SAID STAGEOUTPUT TERMINALS TO PROVIDE A SIGNAL WHOSE PHASE IS VARIABLE IN STEPS; A SYNCHRO HAVING AT LEAST TWO STATOR WINDINGS AND A ROTOR WINDING;
References Cited (Backward Citations)
GB650137A
Cited
US2791744A
Cited
US2924891A
Cited
US2829346A
Cited
US2912688A
Cited
US3265904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |