Patent US1901491A successfully refreshed from Google Patents.
Patent US3145953A successfully refreshed from Google Patents.
US3145953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft
Assignee: Bristol Siddeley Engines Ltd
•
Filing: 1962-06-29
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Granted: 1964-08-25
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Expires: 1982-06-29
Abstract
No abstract record available.
Inventors
- 👤 Denning Ralph Murch
- 👤 Lewis Alan Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:00
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0041; B64C29/0066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
AN AIRCRAFT INCLUDING PROPULSION MEANS, A WING FOR GENERATING LIFT IN RESPONSE TO FORWARD MOTION OF THE AIRCRAFT, JET MEANS FOR EXERTING A THRUST HAVING A LIFT COMPONENT, MEANS FOR INCREASING LIFT FOR TAKE-OFF AFTER A SHORT GROUND RUN BY MODIFICATION OF THE ACTION OF AT LEAST ONE OF THE WING AND THE JET MEANS, FIRST DETECTING MEANS RESPONSIVE TO THE AIR SPEED OF THE AIRCRAFT, SECOND DETECTING MEANS RESPONSIVE TO THE THRUST OF THE JET MEANS, AND OUTPUT MEANS FOR DISTINGUISHING, PRIOR TO THE SAID MODIFICATION OF ACTION, BETWEEN SAFE AND UNSAFE CONDITIONS FOR INITIATING THE MODIFICATION, BY RECEIVING SIGNALS FROM THE DETECTING MEANS, WEIGHTING THOSE SIGNALS BY PREDETERMINED QUANTITIES AND DERIVING FROM THE WEIGHTED SIGNALS AN INDICATION OF THE SUM OF THE POTENTIAL LIFT OF THE WING AND OF THE JET MEANS CORRESPONDING TO THE SAID MODIFICATION, AND COMPARING THAT INDICATION WITH A PREDETERMINED DATUM INDICATION OF THE LIFT NECESSARY FOR SAFE TAKE-OFF OF THE AIRCRAFT.
Claim 2
Dependent Claim
158 words
AN AIRCRAFT INCLUDING PROPULSION MEANS, A WING FOR GENERATING LIFT IN RESPONSE TO FORWARD MOTION OF THE AIRCRAFT, JET MEANS FOR EXERTING A THRUST HAVING A LIFT COMPONENT, MEANS FOR INCREASING LIFT FOR TAKE-OFF AFTER A SHORT GROUND RUN BY MODIFICATION OF THE ACTION OF AT LEAST ONE OF THE WING AND THE JET MEANS, FIRST DETECTING MEANS RESPONSIVE TO THE AIR SPEED OF THE AIRCRAFT, SECOND DETECTING MEANS RESPONSIVE TO THE THRUST OF THE JET MEANS, AND OUTPUT MEANS FOR DISTINGUISHING, PRIOR TO THE SAID MODIFICATION OF ACTION, BETWEEN SAFE AND UNSAFE CONDITIONS FOR INITIATING THE MODIFICATION, BY RECEIVING SIGNALS FROM THE DETECTING MEANS, WEIGHTING THOSE SIGNALS BY PREDETERMINED QUANTITIES AND DERIVING FROM THE WEIGHTED SIGNALS AN INDICATION OF THE SUM OF THE POTENTIAL LIFT OF THE WING AND OF THE JET MEANS CORRESPONDING TO THE SAID MODIFICATION, AND COMPARING THAT INDICATION WITH A PREDETERMINED DATUM INDICATION OF THE LIFT NECESSARY FOR SAFE TAKE-OFF OF THE AIRCRAFT.
References Cited (Backward Citations)
US2191250A
Cited
US2737015A
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US2930544A
Cited
US2941399A
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US3056258A
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US3060684A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |