US3159738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft ground run predictors
Assignee: S Smith and Sons Ltd
•
Filing: 1961-05-12
•
Granted: 1964-12-01
•
Expires: 1981-05-12
Abstract
No abstract record available.
Inventors
- 👤 James Frederick David
- 👤 Rush Derek Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:12
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/0083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A GROUND RUN PREDICTOR FOR AN AIRCRAFT, COMPRISING MEANS FOR GENERATING SIGNALS DEFINING SUCCESSIVE INTERVALS OF TIME DURING WHICH THE AIRCRAFT TRAVELS THE SAME PREDETERMINED DISTANCE ALONG THE GROUND, MEANS CONTROLLED BY SAID SIGNALS FOR GENERATING FURTHER SIGNALS REPRESENTATIVE OF THE DURATIONS OF THE SAID INTERVALS AND MEANS FOR STORING THE SAID FURTHER SIGNALS PERTAINING TO THE LAST N INTERVALS OF TIME (WHERE N IS AT LEAST THREE) , A DIGITAL COMPUTER, AN INDUCATOR COUPLED TO SAID COMPUTER AND MEANS FOR SETTING INTO SAID COMPUTER A PREDETERMINED CRITICAL DISTANCE S, SAID COMPUTER BEING RESPONSIVE TO THE STORED N FURTHER SIGNALS AND TO SIGNALS REPRESENTING THE DISTANCE TRAVELLED BY THE AIRCRAFT TO COMPUTE THE VELOCITY AND ACCELERATION OF THE AIRCRAFT AND TO DERIVE THEREFROM AND APPLY TO THE INDICATOR A SIGNAL REPRESENTING THE MARGIN BETWEEN THE CRITICAL DISTANCE AND THE DISTANCE AT WHICH TAKE-OFF IS CALCULATED TO OCCUR.
Claim 2
Dependent Claim
147 words
A GROUND RUN PREDICTOR FOR AN AIRCRAFT, COMPRISING MEANS FOR GENERATING SIGNALS DEFINING SUCCESSIVE INTERVALS OF TIME DURING WHICH THE AIRCRAFT TRAVELS THE SAME PREDETERMINED DISTANCE ALONG THE GROUND, MEANS CONTROLLED BY SAID SIGNALS FOR GENERATING FURTHER SIGNALS REPRESENTATIVE OF THE DURATIONS OF THE SAID INTERVALS AND MEANS FOR STORING THE SAID FURTHER SIGNALS PERTAINING TO THE LAST N INTERVALS OF TIME (WHERE N IS AT LEAST THREE) , A DIGITAL COMPUTER, AN INDUCATOR COUPLED TO SAID COMPUTER AND MEANS FOR SETTING INTO SAID COMPUTER A PREDETERMINED CRITICAL DISTANCE S, SAID COMPUTER BEING RESPONSIVE TO THE STORED N FURTHER SIGNALS AND TO SIGNALS REPRESENTING THE DISTANCE TRAVELLED BY THE AIRCRAFT TO COMPUTE THE VELOCITY AND ACCELERATION OF THE AIRCRAFT AND TO DERIVE THEREFROM AND APPLY TO THE INDICATOR A SIGNAL REPRESENTING THE MARGIN BETWEEN THE CRITICAL DISTANCE AND THE DISTANCE AT WHICH TAKE-OFF IS CALCULATED TO OCCUR.
References Cited (Backward Citations)
US2831182A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |