US3131018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Autoamtic carrier controlled approach system
Assignee: United States Naval Research Laboratory
•
Filing: 1951-11-30
•
Granted: 1964-04-28
•
Expires: 1971-11-30
Abstract
No abstract record available.
Inventors
- 👤 Brodzinsky Albert
- 👤 Jr Joseph B Reynolds
- 👤 Irving M Saffitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:31
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/04; G05D1/06; G05D1/0607; G05D1/0653; G05D1/0676; G05D1/0684; G01; G01S; G01S13/00; G01S13/88; G01S13/91; G01S13/913; G06; G06G; G06G7/00; G06G7/48; G06G7/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A SYSTEM FOR DIRECTING AN AIRCRAFT TO A SELECTED LANDING AREA ALONG A DESIRED FLIGHT PATH, COMPRISING AIRCRAFT DETECTION MEANS FOR FOLLOWING THE AIRCRAFT IN FLIGHT AND FOR MEASURING THE POSITION IN SPACE THEREOF RELATIVE TO SAID LANDING AREA, SAID DETECTION MEANS INCLUDING MEANS PRODUCING AN ELECTRICAL ANALOG SIGNAL OF RANGE AND OF AT LEAST ONE OTHER FLIGHT PATH CRITERIA RELATIVE TO SAID LANDING AREA INCLUDING AZIMUTH; FLIGHT PATH DERIVER MEANS FOR PRODUCING ELECTRICAL ANALOG SIGNALS OF SAID CRITERIA RELATIVE TO SAID LANDING AREA FOR POINTS ALONG A SUBSTANTIALLY SEMICIRCULAR FLIGHT PATH IN THE AZIMUTH SENSE AS A FUNCTION OF RANGE; MEANS CONNECTING THE OUTPUT OF SAID DETECTION MEANS TO THE INPUT OF SAID FLIGHT PATH DERIVER SUCH THAT THE OUTPUT OF SAID FLIGHT PATH DERIVER IS RESPONSIVE TO THE RANGE SIGNAL OUTPUT OF SAID DETECTION MEANS; ELECTRICAL SIGNAL COMPARATOR MEANS CONNECTED TO THE OUTPUTS OF SAID DETECTION MEANS AND SAID FLIGHT PATH DERIVER
Claim 2
Independent Claim
154 words
A SYSTEM FOR DIRECTING AN AIRCRAFT TO A SELECTED LANDING AREA ALONG A DESIRED FLIGHT PATH, COMPRISING AIRCRAFT DETECTION MEANS FOR FOLLOWING THE AIRCRAFT IN FLIGHT AND FOR MEASURING THE POSITION IN SPACE THEREOF RELATIVE TO SAID LANDING AREA, SAID DETECTION MEANS INCLUDING MEANS PRODUCING AN ELECTRICAL ANALOG SIGNAL OF RANGE AND OF AT LEAST ONE OTHER FLIGHT PATH CRITERIA RELATIVE TO SAID LANDING AREA INCLUDING AZIMUTH; FLIGHT PATH DERIVER MEANS FOR PRODUCING ELECTRICAL ANALOG SIGNALS OF SAID CRITERIA RELATIVE TO SAID LANDING AREA FOR POINTS ALONG A SUBSTANTIALLY SEMICIRCULAR FLIGHT PATH IN THE AZIMUTH SENSE AS A FUNCTION OF RANGE; MEANS CONNECTING THE OUTPUT OF SAID DETECTION MEANS TO THE INPUT OF SAID FLIGHT PATH DERIVER SUCH THAT THE OUTPUT OF SAID FLIGHT PATH DERIVER IS RESPONSIVE TO THE RANGE SIGNAL OUTPUT OF SAID DETECTION MEANS; ELECTRICAL SIGNAL COMPARATOR MEANS CONNECTED TO THE OUTPUTS OF SAID DETECTION MEANS AND SAID FLIGHT PATH DERIVER
References Cited (Backward Citations)
US2436846A
Cited
US2555101A
Cited
US2459482A
Cited
US2599889A
Cited
US2539616A
Cited
US2782411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |