US3078595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Simulated rpm system for propellertype aircraft
Assignee: Curtiss Wright Corp
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Filing: 1961-04-24
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Granted: 1963-02-26
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Expires: 1981-04-24
Abstract
No abstract record available.
Inventors
- 👤 Jr William H Dawson
- 👤 Duncan W Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:29
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/16; G09B9/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
ELECTRICAL SIMULATING APPARATUS FOR REPRESENTING THE PERFORMANCE OF AIRCRAFT HAVING A TURBINE-PROPELLER COMBINATION INCLUDING THE INDICATION OF PROPELLER SHAFT RPM, COMPRISING A SIMULATED CONDITION LEVER AND A SIMULATED POWER DEMAND LEVER, A SOURCE OF SIGNALS REPRESENTING SIMULATED AERODYNAMIC AND AMBIENT FLIGHT FACTORS, A CLOSED-LOOP ANALOG SERVO SYSTEM COMPRISING A FIRST SERVO SYSTEM POSITIONED TO REPRESENT PROPELLER SHAFT RPM, MEANS PRIMARILY RESPONSIVE TO POSITIONING OF THE POWER DEMAND LEVER FOR PRODUCING A SIGNAL REPRESENTING ENGINE FUEL FLOW, A SECOND SERVO SYSTEM POSITIONED TO REPRESENT PROPELLER BLADE ANGLE AND RESPONSIVE JOINTLY TO POSITIONING OF THE CONDITION LEVER AND THE RPM SYSTEM, A THIRD SERVO SYSTEM POSITIONED TO REPRESENT A TURBINE TEMPERATURE THAT IS A MANIFESTATION OF TURBINE POWER, SAID THIRD SYSTEM BEING RESPONSIVE JOINTLY TO SIGNALS PRODUCED BY
Claim 2
Dependent Claim
126 words
ELECTRICAL SIMULATING APPARATUS FOR REPRESENTING THE PERFORMANCE OF AIRCRAFT HAVING A TURBINE-PROPELLER COMBINATION INCLUDING THE INDICATION OF PROPELLER SHAFT RPM, COMPRISING A SIMULATED CONDITION LEVER AND A SIMULATED POWER DEMAND LEVER, A SOURCE OF SIGNALS REPRESENTING SIMULATED AERODYNAMIC AND AMBIENT FLIGHT FACTORS, A CLOSED-LOOP ANALOG SERVO SYSTEM COMPRISING A FIRST SERVO SYSTEM POSITIONED TO REPRESENT PROPELLER SHAFT RPM, MEANS PRIMARILY RESPONSIVE TO POSITIONING OF THE POWER DEMAND LEVER FOR PRODUCING A SIGNAL REPRESENTING ENGINE FUEL FLOW, A SECOND SERVO SYSTEM POSITIONED TO REPRESENT PROPELLER BLADE ANGLE AND RESPONSIVE JOINTLY TO POSITIONING OF THE CONDITION LEVER AND THE RPM SYSTEM, A THIRD SERVO SYSTEM POSITIONED TO REPRESENT A TURBINE TEMPERATURE THAT IS A MANIFESTATION OF TURBINE POWER, SAID THIRD SYSTEM BEING RESPONSIVE JOINTLY TO SIGNALS PRODUCED BY
References Cited (Backward Citations)
US2940181A
Cited
US2979833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |