US3373959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus
Assignee: Honeywell Inc
•
Filing: 1965-10-21
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Granted: 1968-03-19
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Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 John F Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:47
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/16; G06G7/161; G06G7/48; G06G7/70
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
108 words
COMPUTING MEANS COMPRISING IN COMBINATION: A D-C AMPLIFIER, HAVING INPUT AND OUTPUT TERMINALS; MEANS CONNECTED TO THE AMPLIFIER INPUT TERMINAL, CAUSING A CURRENT DIRECTLY PROPORTIONAL TO A FIRST SIGNAL TO FLOW THEREINTO; A NETWORK CONNECTED BETWEEN THE AMPLIFIER OUTPUT AND INPUT TERMINALS, COMPRISING A CAPACITOR AND TAPPED RESISTOR, IN PARALLEL; A PULSE WIDTH MODULATOR, PROVIDING A TRAIN OF PERIODIC PULSES, THE WIDTH OF THE PULSES LINEARLY DECREASING AND INCREASING AS A SECOND SIGNAL INCREASES AND DECREASES RESPECTIVELY; AND, SWITCHING MEANS CONNECTED TO THE RESISTOR TAP, RESPONSIVE TO THE PULSES AND INTERRUPTING RESISTIVE CURRENT FLOW, IN SAID NETWORK, BETWEEN AMPLIFIER INPUT AND OUTPUT TERMINALS IN COINCIDENCE WITH THE PULSES.
Claim 2
Dependent Claim
108 words
COMPUTING MEANS COMPRISING IN COMBINATION: A D-C AMPLIFIER, HAVING INPUT AND OUTPUT TERMINALS; MEANS CONNECTED TO THE AMPLIFIER INPUT TERMINAL, CAUSING A CURRENT DIRECTLY PROPORTIONAL TO A FIRST SIGNAL TO FLOW THEREINTO; A NETWORK CONNECTED BETWEEN THE AMPLIFIER OUTPUT AND INPUT TERMINALS, COMPRISING A CAPACITOR AND TAPPED RESISTOR, IN PARALLEL; A PULSE WIDTH MODULATOR, PROVIDING A TRAIN OF PERIODIC PULSES, THE WIDTH OF THE PULSES LINEARLY DECREASING AND INCREASING AS A SECOND SIGNAL INCREASES AND DECREASES RESPECTIVELY; AND, SWITCHING MEANS CONNECTED TO THE RESISTOR TAP, RESPONSIVE TO THE PULSES AND INTERRUPTING RESISTIVE CURRENT FLOW, IN SAID NETWORK, BETWEEN AMPLIFIER INPUT AND OUTPUT TERMINALS IN COINCIDENCE WITH THE PULSES.
Claim 3
Dependent Claim
180 words
IN AIRCRAFT ATTITUDE CONTROL APPARATUS, A COMPUTING MEANS COMPRISING IN COMBINATION: A D-C AMPLIFIER, HAVING INPUT AND OUTPUT TERMINALS; MEANS CONNECTED TO THE AMPLIFIER INPUT TERMINAL CAUSING A CURRENT WHICH IS A FUNCTION OF THE VERTICAL ACCELERATION OF THE AIRCRAFT FLOW THEREINTO; A NETWORK CONNECTED BETWEEN THE AMPLIFIER OUTPUT AND INPUT TERMINALS, COMPRISING A CAPACITOR AND TAPPED RESISTOR, IN PARALLEL; A PULSE WIDTH MODULATOR, PROVIDING A TRAIN OF PERIODIC PULSES, THE WIDTH OF THE PULSES LINEARLY DECREASING AND INCREASING AS COSINE $, WHERE $ IS THE ANGLE OF BANK OF THE AIRCRAFT, INCREASES AND DECREASES RESPECTIVELY; SWITCHING MEANS CONNECTED TO THE RESISTOR TAP, RESPONSIVE TO THE PULSES AND INTERRUPTING RESISTIVE CURRENT FLOW, IN SAID NETWORK, BETWEEN AMPLIFIER INPUT AND OUTPUT TERMINALS, IN COINCIDENCE WITH THE PULSES; SECOND SWITCHING MEANS, RESPONSIVE TO THE PULSES AND INTERRUPTING THE CURRENT THAT IS A FUNCTION OF THE VERTICAL ACCELERATION OF THE AIRCRAFT, IN COINCIDENCE WITH THE PULSES; AND, SERVO MEANS CONNECTED TO THE OUTPUT OF THE AMPLIFIER, OPERATING THE AIRCRAFT ELEVATOR SURFACE TO PREVENT LOSS OF ALTITUDE OF THE CRAFT IN A BLANKED TURN.
Claim 4
Dependent Claim
180 words
IN AIRCRAFT ATTITUDE CONTROL APPARATUS, A COMPUTING MEANS COMPRISING IN COMBINATION: A D-C AMPLIFIER, HAVING INPUT AND OUTPUT TERMINALS; MEANS CONNECTED TO THE AMPLIFIER INPUT TERMINAL CAUSING A CURRENT WHICH IS A FUNCTION OF THE VERTICAL ACCELERATION OF THE AIRCRAFT FLOW THEREINTO; A NETWORK CONNECTED BETWEEN THE AMPLIFIER OUTPUT AND INPUT TERMINALS, COMPRISING A CAPACITOR AND TAPPED RESISTOR, IN PARALLEL; A PULSE WIDTH MODULATOR, PROVIDING A TRAIN OF PERIODIC PULSES, THE WIDTH OF THE PULSES LINEARLY DECREASING AND INCREASING AS COSINE $, WHERE $ IS THE ANGLE OF BANK OF THE AIRCRAFT, INCREASES AND DECREASES RESPECTIVELY; SWITCHING MEANS CONNECTED TO THE RESISTOR TAP, RESPONSIVE TO THE PULSES AND INTERRUPTING RESISTIVE CURRENT FLOW, IN SAID NETWORK, BETWEEN AMPLIFIER INPUT AND OUTPUT TERMINALS, IN COINCIDENCE WITH THE PULSES; SECOND SWITCHING MEANS, RESPONSIVE TO THE PULSES AND INTERRUPTING THE CURRENT THAT IS A FUNCTION OF THE VERTICAL ACCELERATION OF THE AIRCRAFT, IN COINCIDENCE WITH THE PULSES; AND, SERVO MEANS CONNECTED TO THE OUTPUT OF THE AMPLIFIER, OPERATING THE AIRCRAFT ELEVATOR SURFACE TO PREVENT LOSS OF ALTITUDE OF THE CRAFT IN A BLANKED TURN.
References Cited (Backward Citations)
US3215824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |