Patent US3210763A successfully refreshed from Google Patents.
US3210763A
Expired / Lapsed
US
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Flight control system
Assignee: Unisys Corp
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Filing: 1962-03-19
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Granted: 1965-10-05
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Expires: 1982-03-19
Abstract
No abstract record available.
Inventors
- 👤 Harry C Thomson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:35
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/04; G05D1/06; G05D1/0607; G05D1/0653; G05D1/0676; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
APPARATUS FOR CONTROLLING THE FLIGHT OF AN AIRCRAFT DURING A LANDING MANEUVER COMPRISING FIRST RADIO MEANS FOR PRODUCING A SIGNAL PROPORTIONAL TO THE DEPARTURE OF SAID CRAFT FROM A FIRST STRAIGHT LINE GLIDE SLOPE, SECOND MEANS FOR PRODUCING A SIGNAL PROPORTIONAL TO THE DEPARTURE OF SAID CRAFT FROM A SECOND STRAIGHT LINE GLIDE SLOPE LESS STEEP THAN SAID FIRST GLIDE SLOPE, AND CONTROL MEANS RESPONSIVE TO SAID FIRST RADIO MEANS OUTPUT SIGNAL ABOVE A CERTAIN ALTITUDE AND RESPONSIVE TO SAID SECOND RADIO MEANS OUTPUT SIGNAL BELOW THAT ALTITUDE, WHEREBY THE CRAFT EXECUTES A LANDING MANEUVER BY BEING FLOWN TO CANCEL CONTINUALLY THE SIGNAL TO WHICH SAID CONTROL MEANS RESPONDS.
Claim 2
Dependent Claim
109 words
APPARATUS FOR CONTROLLING THE FLIGHT OF AN AIRCRAFT DURING A LANDING MANEUVER COMPRISING FIRST RADIO MEANS FOR PRODUCING A SIGNAL PROPORTIONAL TO THE DEPARTURE OF SAID CRAFT FROM A FIRST STRAIGHT LINE GLIDE SLOPE, SECOND MEANS FOR PRODUCING A SIGNAL PROPORTIONAL TO THE DEPARTURE OF SAID CRAFT FROM A SECOND STRAIGHT LINE GLIDE SLOPE LESS STEEP THAN SAID FIRST GLIDE SLOPE, AND CONTROL MEANS RESPONSIVE TO SAID FIRST RADIO MEANS OUTPUT SIGNAL ABOVE A CERTAIN ALTITUDE AND RESPONSIVE TO SAID SECOND RADIO MEANS OUTPUT SIGNAL BELOW THAT ALTITUDE, WHEREBY THE CRAFT EXECUTES A LANDING MANEUVER BY BEING FLOWN TO CANCEL CONTINUALLY THE SIGNAL TO WHICH SAID CONTROL MEANS RESPONDS.
References Cited (Backward Citations)
FR1260282A
Cited
US3052427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |