US3279724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Landing control equipment
Assignee: Unisys Corp
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Filing: 1964-10-12
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Granted: 1966-10-18
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Expires: 1984-10-12
Abstract
No abstract record available.
Inventors
- 👤 Miller Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:32
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
LANDING CONTROL APPARATUS FOR AIRCRAFT HAVING AUTOMATIC FLIGHT CONTROL APPARATUS, COMPRISING FIRST MEANS FOR USE IN CONTROLLING AN AIRCRAFT TO A DEFINED GLIDE SLOPE COURSE, SECOND MEANS FOR USE IN CONTROLLING SAID AIRCRAFT TO A FLARE-OUT COURSE THAT IS LESS STEEP THAN THE INTERSECTS WITH THE DEFINED GLIDE SLOPE COURSE, SWITCH MEANS FOR NORMALLY CONNECTING SAID FIRST MEANS TO SAID FLIGHT CONTROL APPARATUS AND ON ACTUATION THEREOF CONNECTING SAID SECOND MEANS TO THAT APPARATUS, AND MEANS FOR ACTUATING SAID SWITCH MEANS AT A PREDETERMINED ALTITUDE BELOW THE ALTITUDE AT WHICH SAID COURSES INTERSECT.
Claim 2
Dependent Claim
93 words
LANDING CONTROL APPARATUS FOR AIRCRAFT HAVING AUTOMATIC FLIGHT CONTROL APPARATUS, COMPRISING FIRST MEANS FOR USE IN CONTROLLING AN AIRCRAFT TO A DEFINED GLIDE SLOPE COURSE, SECOND MEANS FOR USE IN CONTROLLING SAID AIRCRAFT TO A FLARE-OUT COURSE THAT IS LESS STEEP THAN THE INTERSECTS WITH THE DEFINED GLIDE SLOPE COURSE, SWITCH MEANS FOR NORMALLY CONNECTING SAID FIRST MEANS TO SAID FLIGHT CONTROL APPARATUS AND ON ACTUATION THEREOF CONNECTING SAID SECOND MEANS TO THAT APPARATUS, AND MEANS FOR ACTUATING SAID SWITCH MEANS AT A PREDETERMINED ALTITUDE BELOW THE ALTITUDE AT WHICH SAID COURSES INTERSECT.
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |