US3175787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft having multiple lift engines
Assignee: Safran Aircraft Engines SAS
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Filing: 1963-07-31
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Granted: 1965-03-30
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Expires: 1983-07-31
Abstract
No abstract record available.
Inventors
- 👤 Boue Pierre Germain Rene
- 👤 Ernst Adolphe Otton Gontier
- 👤 Jardinier Jean Paul Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:51
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0041; B64C29/0058; B64C29/0091
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
IN AN AIRCRAFT HAVING A PLURALITH OF LIFT ENGINES OR GROUPS OF LIFT ENGINES ARRANGED ON EACH SIDE OF ITS CENTER OF GRAVITY IN SUCH A MANNER AS TO GENERATE NORMALLY, BY THEIR OPERATION, THRUST WHOSE MOMENTS ARE BALANCED IN RELATION TO THE CENTER OF GRAVITY AND HAVING MEANS TO CONTROL SAID THRUST, A SAFETY DEVICE COMPRISING, IN COMBINATION, DETECTION MEANS ASSOCIATED WITH EACH ENGINE AND DELIVERING A SIGNAL WHICH IS A FUNCTION OF THE THRUST OF SAID ENGINE AND COMPARISON MEANS ASSOCIATED WITH AT LEAST TWO ENGINES, THE MOMENTS OF WHOSE THRUST ARE BALANCED IN RELATION TO THE CENTRE OF GRAVITY OF THE AIRCRAFT, THE COMPARISON MEANS BEING ADAPTED TO RECEIVE SIGNALS FROM THE DETECTION MEANS ASSOCIATED WITH SAID TWO ENGINES AND BEING CONNECTED TO THE THRUST CONTROL MEANS, SO AS TO ENSRUE SIMULTANEOUS REDUCTION IN THE THRUST OF THE SAID TWO ENGINES WHOSE MOMENTS ARE BALANCED IN RELATIONSHIP TO THE CENTER OF GRAVITY OF THE AIRCRAFT, IF EITHER ONE OF SAID TWO ENGINES SHOULD FAIL.
Claim 2
Dependent Claim
167 words
IN AN AIRCRAFT HAVING A PLURALITH OF LIFT ENGINES OR GROUPS OF LIFT ENGINES ARRANGED ON EACH SIDE OF ITS CENTER OF GRAVITY IN SUCH A MANNER AS TO GENERATE NORMALLY, BY THEIR OPERATION, THRUST WHOSE MOMENTS ARE BALANCED IN RELATION TO THE CENTER OF GRAVITY AND HAVING MEANS TO CONTROL SAID THRUST, A SAFETY DEVICE COMPRISING, IN COMBINATION, DETECTION MEANS ASSOCIATED WITH EACH ENGINE AND DELIVERING A SIGNAL WHICH IS A FUNCTION OF THE THRUST OF SAID ENGINE AND COMPARISON MEANS ASSOCIATED WITH AT LEAST TWO ENGINES, THE MOMENTS OF WHOSE THRUST ARE BALANCED IN RELATION TO THE CENTRE OF GRAVITY OF THE AIRCRAFT, THE COMPARISON MEANS BEING ADAPTED TO RECEIVE SIGNALS FROM THE DETECTION MEANS ASSOCIATED WITH SAID TWO ENGINES AND BEING CONNECTED TO THE THRUST CONTROL MEANS, SO AS TO ENSRUE SIMULTANEOUS REDUCTION IN THE THRUST OF THE SAID TWO ENGINES WHOSE MOMENTS ARE BALANCED IN RELATIONSHIP TO THE CENTER OF GRAVITY OF THE AIRCRAFT, IF EITHER ONE OF SAID TWO ENGINES SHOULD FAIL.
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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |