US3167276A
Expired / Lapsed
US
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Control apparatus
Assignee: Honeywell Inc
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Filing: 1961-09-29
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Granted: 1965-01-26
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Expires: 1981-09-29
Abstract
No abstract record available.
Inventors
- 👤 Charles A Moosbrugger
- 👤 Knut M Wefald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:52
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/04; G05D1/06; G05D1/0607; G05D1/0615; G05D1/0623; F; F41; F41G; F41G7/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
119 words
IN CONTROL APPARATUS FOR AN AIRCRAFT HAVING PITCH ATTITUDE CHANGING MEANS, IN COMBINATION: OPERABLE MEANS CONTROLLING SAID ATTITUDE CHANGING MEANS TO ALTER ATTITUDE AND THUS CHANGE ALTITUDE; MEANS PROVIDING A FIRST SIGNAL IN ACCORDANCE WITH THE ERROR BETWEEN THE TOTAL ALTITUDE OF AN AIRCRAFT AND A PRESELECTED ALTITUDE; MEANS PROVIDING A SECOND SIGNAL IN ACCORDANCE WITH THE ALTITUDE RATE OF THE CRAFT; FURTHER MEANS COMBINING SAID FIRST AND SECOND SIGNALS IN OPPOSITION; AND ADDITIONAL MEANS CONTROLLED BY SAID FURTHER MEANS WHEN SAID TWO SIGNALS ARE EQUAL AND OPPOSITE RENDERING THE OPERABLE MEANS INEFFECTIVE AND CONTROLLING OPERATION OF THE ATTITUDE CHANGING MEANS BY SAID TWO SIGNALS THEREBY EFFECTING A ROUNDOUT OR LEVELING OFF OF THE FLIGHT PATH OF THE AIRCRAFT.
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) | 1968-01-26 | 1968-07-27 | 1969-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-26 | 1972-07-27 | 1973-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-26 | 1976-07-27 | 1977-01-26 | $7700.00 | Window Closed / Lapsed |