US3201675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Maximum command limiter device for an automatic flight control system
Assignee: Bendix Corp
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Filing: 1962-11-01
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Granted: 1965-08-17
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Expires: 1982-11-01
Abstract
No abstract record available.
Inventors
- 👤 Peter F Curran
- 👤 William W Medlinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:18
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/0055; G05D1/0066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
284 words
A CONTROL APPARATUS FOR AN AIRCRAFT HAVING ATTITUDE CHANGING MEANS, COMPRISING AN ATTITUDE COMMAND SIGNAL DEVICE HAVING A SIGNAL OUTPUT, A FIRST HIGH GAIN AMPLIFIER HAVING A SIGNAL INPUT OPERATIVELY CONNECTED TO THE SIGNAL OUTPUT OF THE ATTITUDE COMMAND SIGNAL DEVICE, SAID FIRST HIGH GAIN AMPLIFIER HAVING A SIGNAL OUTPUT, A DEMODULATOR HAVING A SIGNAL INPUT OPERATIVELY CONNECTED TO THE SIGNAL OUTPUT OF THE FIRST HIGH GAIN AMPLIFIER, SAID DEMODULATOR HAVING A SIGNAL OUTPUT, A LIMITER HAVING AN INPUT OPERATIVELY CONNECTED TO THE SIGNAL OUTPU OF THE DEMODULATOR, SAID LIMITER HAVING A SIGNAL OUTPUT AND BEING SO ARRANGED AS TO APPLY THERETO A PREDETERMINED MAXIMUM OUTPUT SIGNAL, THE LIMITER BEING SO ARRANGED THAT UPON THE SIGNAL APPLIED TO THE INPUT THEREOF BEING LESS THAN SAID PREDETERMINED MAXIMUM THE LIMITER HAS NEGLIGIBLE EFFECT ON SAID SIGNAL APPLIED THERETO AND THERETHROUGH TO THE OUTPUT OF THE LIMITER, A RESISTANCE-CAPACITANCE LAG NETWORK HAVING A SIGNAL INPUT OPERATIVELY CONNECTED TO THE SIGNAL OUTPUT OF SAID LIMITER, SAID NETWORK HAVING A SIGNAL OUTPUT, A MODULATOR HAVING A SIGNAL INPUT OPERATIVELY CONNECTED TO THE SIGNAL OUTPUT OF SAID NETWORK, SAID MODULATOR HAVING A SIGNAL OUTPUT, A SECOND AMPLIFIER HAVING A SIGNAL INPUT OPERATIVELY CONNECTED TO THE SIGNAL OUTPUT OF SAID MODULATOR, SAID SECOND AMPLIFIER HAVING A SIGNAL OUTPUT AND BEING SO ARRANGED AS TO VARY THE SIGNAL APPLIED TO THE OUTPUT OF SAID AMPLIFIER WITH THE VARIANCE IN THE AMPLITUDE OF THE SIGNAL APPLIED TO THE INPUT OF THE SECOND AMPLIFIER SO THAT THE GAIN PROCIDED BY THE SECOND AMPLIFIER EFFECTS A PREDETERMINED OUTPUT SIGNAL EFFECTING A CURVE AT A VARIANCE FROM THAT OF THE CURVE OF THE SIGNAL APPLIED TO THE INPUT OF THE SECOND AMPLIFIER, A SERVOMOTOR TO
Claim 2
Dependent Claim
284 words
A CONTROL APPARATUS FOR AN AIRCRAFT HAVING ATTITUDE CHANGING MEANS, COMPRISING AN ATTITUDE COMMAND SIGNAL DEVICE HAVING A SIGNAL OUTPUT, A FIRST HIGH GAIN AMPLIFIER HAVING A SIGNAL INPUT OPERATIVELY CONNECTED TO THE SIGNAL OUTPUT OF THE ATTITUDE COMMAND SIGNAL DEVICE, SAID FIRST HIGH GAIN AMPLIFIER HAVING A SIGNAL OUTPUT, A DEMODULATOR HAVING A SIGNAL INPUT OPERATIVELY CONNECTED TO THE SIGNAL OUTPUT OF THE FIRST HIGH GAIN AMPLIFIER, SAID DEMODULATOR HAVING A SIGNAL OUTPUT, A LIMITER HAVING AN INPUT OPERATIVELY CONNECTED TO THE SIGNAL OUTPU OF THE DEMODULATOR, SAID LIMITER HAVING A SIGNAL OUTPUT AND BEING SO ARRANGED AS TO APPLY THERETO A PREDETERMINED MAXIMUM OUTPUT SIGNAL, THE LIMITER BEING SO ARRANGED THAT UPON THE SIGNAL APPLIED TO THE INPUT THEREOF BEING LESS THAN SAID PREDETERMINED MAXIMUM THE LIMITER HAS NEGLIGIBLE EFFECT ON SAID SIGNAL APPLIED THERETO AND THERETHROUGH TO THE OUTPUT OF THE LIMITER, A RESISTANCE-CAPACITANCE LAG NETWORK HAVING A SIGNAL INPUT OPERATIVELY CONNECTED TO THE SIGNAL OUTPUT OF SAID LIMITER, SAID NETWORK HAVING A SIGNAL OUTPUT, A MODULATOR HAVING A SIGNAL INPUT OPERATIVELY CONNECTED TO THE SIGNAL OUTPUT OF SAID NETWORK, SAID MODULATOR HAVING A SIGNAL OUTPUT, A SECOND AMPLIFIER HAVING A SIGNAL INPUT OPERATIVELY CONNECTED TO THE SIGNAL OUTPUT OF SAID MODULATOR, SAID SECOND AMPLIFIER HAVING A SIGNAL OUTPUT AND BEING SO ARRANGED AS TO VARY THE SIGNAL APPLIED TO THE OUTPUT OF SAID AMPLIFIER WITH THE VARIANCE IN THE AMPLITUDE OF THE SIGNAL APPLIED TO THE INPUT OF THE SECOND AMPLIFIER SO THAT THE GAIN PROCIDED BY THE SECOND AMPLIFIER EFFECTS A PREDETERMINED OUTPUT SIGNAL EFFECTING A CURVE AT A VARIANCE FROM THAT OF THE CURVE OF THE SIGNAL APPLIED TO THE INPUT OF THE SECOND AMPLIFIER, A SERVOMOTOR TO
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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |