US3206641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronizing arrangement for airplane engines and the like
Assignee: Woodward Inc
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Filing: 1962-01-22
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Granted: 1965-09-14
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Expires: 1982-01-22
Abstract
No abstract record available.
Inventors
- 👤 Jr James L Leeson
- 👤 James R Voss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:31
CPC Classifications
B; B64; B64D; B64D35/00; B64C; B64C11/00; B64C11/46; B64C11/50; H; H02; H02P; H02P5/00; H02P5/46; H02P5/52; H02P5/56; Y; Y10; Y10S; Y10S292/00; Y10S292/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
IN APPATUS FOR CONTROLLING AN ENGINE TO SYNCHRONIZE ITS ACTUAL SPEED WITH A DESIRED SPEED, THE COMBINATION COMPRISING FIRST MEANS FOR GENERATING MASTER RECURRING SIGNALS AT A REPETITION RATE SUBSTANTIALLY PROPORTIONAL TO THE DESIRED SPEED, SECOND MEANS FOR GENERATING SLAVE RECURRING SIGNALS AT A REPETITION RATE SUBSTANTIALLY PROPORTIONAL TO THE ACTUAL SPEED OF SAID ENGINE, THIRD MEANS CONNECTED TO RECEIVE AND RESPONSIVE TO SAID MASTER AND SLAVE SIGNALS FOR PRODUCING A CORRECTION SIGNAL EACH TIME THAT THE PHASE OF THE MASTER SIGNAL LAPS THE SLAVE SIGNAL BY 360* IN PHASE, MEANS RESPONSIVE TO THE CORRECTION SIGNALS FOR CHANGING THE ACTUAL SPEED OF SAID ENGINE TO BRING IN INTO AGREEMENT WITH SAID DESIRED SPEED, A VARIABLE TIME DELAY DEVICE INTERPOSED BETWEEN ONE OF SAID GENERATING MEANS AND SAID THIRD MEANS, AND MEANS FOR VARYING THE DELAY INTERVAL OF SAID DEVICE ACCORDING TO THE PHASE ANGLE BETWEEN SAID MASTER AND SLAVE RECURRING SIGNALS.
Claim 2
Dependent Claim
151 words
IN APPATUS FOR CONTROLLING AN ENGINE TO SYNCHRONIZE ITS ACTUAL SPEED WITH A DESIRED SPEED, THE COMBINATION COMPRISING FIRST MEANS FOR GENERATING MASTER RECURRING SIGNALS AT A REPETITION RATE SUBSTANTIALLY PROPORTIONAL TO THE DESIRED SPEED, SECOND MEANS FOR GENERATING SLAVE RECURRING SIGNALS AT A REPETITION RATE SUBSTANTIALLY PROPORTIONAL TO THE ACTUAL SPEED OF SAID ENGINE, THIRD MEANS CONNECTED TO RECEIVE AND RESPONSIVE TO SAID MASTER AND SLAVE SIGNALS FOR PRODUCING A CORRECTION SIGNAL EACH TIME THAT THE PHASE OF THE MASTER SIGNAL LAPS THE SLAVE SIGNAL BY 360* IN PHASE, MEANS RESPONSIVE TO THE CORRECTION SIGNALS FOR CHANGING THE ACTUAL SPEED OF SAID ENGINE TO BRING IN INTO AGREEMENT WITH SAID DESIRED SPEED, A VARIABLE TIME DELAY DEVICE INTERPOSED BETWEEN ONE OF SAID GENERATING MEANS AND SAID THIRD MEANS, AND MEANS FOR VARYING THE DELAY INTERVAL OF SAID DEVICE ACCORDING TO THE PHASE ANGLE BETWEEN SAID MASTER AND SLAVE RECURRING SIGNALS.
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |