US3240447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle control system
Assignee: North American Aviation Corp
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Filing: 1965-03-30
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Granted: 1966-03-15
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Expires: 1985-03-30
Abstract
No abstract record available.
Inventors
- 👤 Olshausen Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:03
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/04; G05D1/06; G05D1/0607; G05D1/0615; G05D1/0623
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN A LONGITUDINAL FLIGHT CONTROL SYSTEM FOR AN AIRCRAFT HAVING A MAIN CONTROL CHANNEL AND AN AUXILIARY CONTROL CHANNEL, INPUT SIGNAL MEANS INCLUDING SIGNAL COMPARISON MEANS FOR APPLYING A CONTROL SIGNAL TO ONE OF SAID CHANNELS; GUST COMPUTING MEANS COMPRISING A HIGH FREQUENCY INTEGRATOR RESPONSIVE TO A PITCH RATE SIGNAL, AND SUMMING MEANS RESPONSIVE TO A NORMAL ACCELERATION SIGNAL AND RESPONSIVELY CONNECTED TO SAID INTEGRATOR; SAID CHANNELS BEING RESPONSIVELY CONNECTED TO SAID COMPUTING MEANS; A PITCHING MOMENT EQUALIZER INTERPOSED BETWEEN THE OTHER OF SAID CHANNELS AND SAID GUST COMPUTING MEANS, SAID EQUALIZER BEING COMPRISED OF A VARIABLE GAIN ELEMENT, AN INTEGRATING DRIVE MEANS RESPONSIVELY CONNECTED TO A SIGNAL MULTIPLIER FOR VARYING THE GAIN OF SAID VARIABLE GAIN ELEMENT, SAID MULTIPLIER BEING RESPONSIVE TO A SIGNAL INDICATIVE OF THE PITCH ACCELERATION OF SAID AIRCRAFT AND TO SAID OUTPUT OF SAID COMPUTING MEANS.
Claim 2
Dependent Claim
141 words
IN A LONGITUDINAL FLIGHT CONTROL SYSTEM FOR AN AIRCRAFT HAVING A MAIN CONTROL CHANNEL AND AN AUXILIARY CONTROL CHANNEL, INPUT SIGNAL MEANS INCLUDING SIGNAL COMPARISON MEANS FOR APPLYING A CONTROL SIGNAL TO ONE OF SAID CHANNELS; GUST COMPUTING MEANS COMPRISING A HIGH FREQUENCY INTEGRATOR RESPONSIVE TO A PITCH RATE SIGNAL, AND SUMMING MEANS RESPONSIVE TO A NORMAL ACCELERATION SIGNAL AND RESPONSIVELY CONNECTED TO SAID INTEGRATOR; SAID CHANNELS BEING RESPONSIVELY CONNECTED TO SAID COMPUTING MEANS; A PITCHING MOMENT EQUALIZER INTERPOSED BETWEEN THE OTHER OF SAID CHANNELS AND SAID GUST COMPUTING MEANS, SAID EQUALIZER BEING COMPRISED OF A VARIABLE GAIN ELEMENT, AN INTEGRATING DRIVE MEANS RESPONSIVELY CONNECTED TO A SIGNAL MULTIPLIER FOR VARYING THE GAIN OF SAID VARIABLE GAIN ELEMENT, SAID MULTIPLIER BEING RESPONSIVE TO A SIGNAL INDICATIVE OF THE PITCH ACCELERATION OF SAID AIRCRAFT AND TO SAID OUTPUT OF SAID COMPUTING MEANS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |