Patent US1183882A successfully refreshed from Google Patents.
US3095169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flight path control system
Assignee: Unisys Corp
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Filing: 1960-06-23
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Granted: 1963-06-25
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Expires: 1980-06-23
Abstract
No abstract record available.
Inventors
- 👤 Stephen S Osder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:32
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/0055; G05D1/0066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
IN AN AIRCRAFT PITCH ATTITUDE CONTROLLING SYSTEM OF THE CHARACTER DESCRIBED, AN ANGLE OF ATTACK SENSOR PROVIDING AN OUTPUT, A GATE FOR BLOCKING THE OUTPUT OF THE ANGLE OF ATTACK SENSOR BELOW A PREDETERMINED LIMIT; AN AIR SPEED SENSOR PROVIDING AN OUTPUT, A SPEED REFERENCE FOR THE SENSOR INCLUDING A PICK-OFF CONNECTED TO THE OUTPUT OF THE SPEED SENSOR HAVING STATOR AND ROTOR PARTS, MEANS FOR ROTATING THE ROTOR PART OF THE PICK-OFF, A NORMALLY CLOSED CIRCUIT CONNECTING THE ROTATING MEANS AND PICK-OFF IN FOLLOW-UP RELATION TO NULL THE OUTPUT OF THE PICK-OFF AND RENDER THE REFERENCE INEFFECTIVE, A CIRCUIT CONNECTING THE ROTATING MEANS TO THE ANGLE OF ATTACK GATE; MEANS RESPONSIVE TO THE OUTPUT OF THE ANGLE OF ATTACK SENSOR ABOVE THE PREDETERMINED GATE LIMIT OPERABLE TO OPEN THE NORMALLY CLOSED CIRCUIT, AND MEANS RESPONSIVE TO THE OUTPUT OF THE PICK-OFF FOR CHANGING THE ATTITUDE OF THE CRAFT ABOUT ITS PITCH AXIS TO PREVENT THE OCCURRENCE OF A STALL CONDITION.
Claim 2
Dependent Claim
161 words
IN AN AIRCRAFT PITCH ATTITUDE CONTROLLING SYSTEM OF THE CHARACTER DESCRIBED, AN ANGLE OF ATTACK SENSOR PROVIDING AN OUTPUT, A GATE FOR BLOCKING THE OUTPUT OF THE ANGLE OF ATTACK SENSOR BELOW A PREDETERMINED LIMIT; AN AIR SPEED SENSOR PROVIDING AN OUTPUT, A SPEED REFERENCE FOR THE SENSOR INCLUDING A PICK-OFF CONNECTED TO THE OUTPUT OF THE SPEED SENSOR HAVING STATOR AND ROTOR PARTS, MEANS FOR ROTATING THE ROTOR PART OF THE PICK-OFF, A NORMALLY CLOSED CIRCUIT CONNECTING THE ROTATING MEANS AND PICK-OFF IN FOLLOW-UP RELATION TO NULL THE OUTPUT OF THE PICK-OFF AND RENDER THE REFERENCE INEFFECTIVE, A CIRCUIT CONNECTING THE ROTATING MEANS TO THE ANGLE OF ATTACK GATE; MEANS RESPONSIVE TO THE OUTPUT OF THE ANGLE OF ATTACK SENSOR ABOVE THE PREDETERMINED GATE LIMIT OPERABLE TO OPEN THE NORMALLY CLOSED CIRCUIT, AND MEANS RESPONSIVE TO THE OUTPUT OF THE PICK-OFF FOR CHANGING THE ATTITUDE OF THE CRAFT ABOUT ITS PITCH AXIS TO PREVENT THE OCCURRENCE OF A STALL CONDITION.
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) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |