Patent US3265904A successfully refreshed from Google Patents.
US3265904A
Expired / Lapsed
US
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Solid state synchro and synchronization means
Assignee: Collins Radio Co
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Filing: 1963-07-17
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Granted: 1966-08-09
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Expires: 1983-07-17
Abstract
No abstract record available.
Inventors
- 👤 Richard B Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:21
CPC Classifications
G; G08; G08C; G08C19/00; G08C19/38; G08C19/46; G08C19/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
MEANS FOR CONVERTING A THREE-WIRE SYNCHRO SIGNAL DEFINING AN ANGULAR POSITION $ BETWEEN THE ROTOR AND STATOR ELEMENTS OF SAID SYNCHRO TO A TWO-WIRE CONTROL SIGNAL DEFINING THE ANGLE $ COMPRISING, MEANS CONVERTING SAID THREE-WIRE SIGNAL TO A PLURALITY OF M SIGNALS HAVING INSTANTANEOUS AMPLITUDES RESPECTIVELY PROPORTIONAL TO SINE ($+N$) WHERE N IS AN INTEGER 0,283... (M-1, AND $=360*/M, MEANS FOR DEMODULATING EACH OF SID PLURALITY OF SIGNALS TO DEVELOP THEREFROM ENVELOPE SIGNALS CORRESPONDING TO THE INSTANTANEOUS AMPLITUDES OF EACH OF SAID SIGNALS, SIGNAL MONITORING MEANS RECEIVING SAID ENVELOPE SIGNALS, SWITCHING MEANS RECEIVING SAID PLURALITY OF SIGNALS AND BEING RESPONSIVE TO AND ACTIVATED BY SAID SIGNAL MONITORING MEANS TO SEQUENTIALLY SWITCH TO A COMMON OUTPUT LINE PREDETERMINED PORTIONS OF EACH OF SAID PLURALITY OF SIGNALS IN A PREDETERMINED CONTINUOUS SEQUENCE.
Claim 2
Dependent Claim
130 words
MEANS FOR CONVERTING A THREE-WIRE SYNCHRO SIGNAL DEFINING AN ANGULAR POSITION $ BETWEEN THE ROTOR AND STATOR ELEMENTS OF SAID SYNCHRO TO A TWO-WIRE CONTROL SIGNAL DEFINING THE ANGLE $ COMPRISING, MEANS CONVERTING SAID THREE-WIRE SIGNAL TO A PLURALITY OF M SIGNALS HAVING INSTANTANEOUS AMPLITUDES RESPECTIVELY PROPORTIONAL TO SINE ($+N$) WHERE N IS AN INTEGER 0,283... (M-1, AND $=360*/M, MEANS FOR DEMODULATING EACH OF SID PLURALITY OF SIGNALS TO DEVELOP THEREFROM ENVELOPE SIGNALS CORRESPONDING TO THE INSTANTANEOUS AMPLITUDES OF EACH OF SAID SIGNALS, SIGNAL MONITORING MEANS RECEIVING SAID ENVELOPE SIGNALS, SWITCHING MEANS RECEIVING SAID PLURALITY OF SIGNALS AND BEING RESPONSIVE TO AND ACTIVATED BY SAID SIGNAL MONITORING MEANS TO SEQUENTIALLY SWITCH TO A COMMON OUTPUT LINE PREDETERMINED PORTIONS OF EACH OF SAID PLURALITY OF SIGNALS IN A PREDETERMINED CONTINUOUS SEQUENCE.
References Cited (Backward Citations)
US3205492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |