US3220283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety device for aircraft with mechanically coupled propelelrs
Assignee: Ateliers dAviation Louis Breguet SA
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Filing: 1962-05-29
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Granted: 1965-11-30
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Expires: 1982-05-29
Abstract
No abstract record available.
Inventors
- 👤 Armand G Ricard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:55
CPC Classifications
F; F16; F16D; F16D9/00; B; B64; B64D; B64D35/00; B64D35/04; F16H; F16H37/00; F16H2700/00; F16H2700/02; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19014
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN AN AIRCRAFT HAVING A LEAST ONE ENGINE, A PLURALITY OF SHAFTS DRIVEN BY SAID ENGINE, A PLURALITY OF PROPELLERS DRIVEN BY SAID SHAFTS RESPECTIVELY AND MEANS FOR MECHANICALLY COUPLING SAID SHAFTS TO COMPEL THEM TO ROTATE OF THE SAME SPEEK, A SAFETY DEVICE COMPRISINGG IN COMBINATION FREE WHEEL MECHANISMS INTERPOSED BETWEEN SAID ENGINE AND SAID SHAFTS RESPECTIVELY TO PERMIT SAID SHAFTS TO ROTATE AT A SPEED HIGHER THAN THAT T WHICH THEY ARE DRIVEN BY SAID ENGINE; A CLUTCH INTERPOSED BETWEEN EACH OF SAID SHAFTS AND THE CORRESPONDING PROPELLER, MEANS FOR CONTROLLING SAID CLUTCH; AND SAID MEANS FOR MECHANICALLY COUPLING SAID SHAFTS COMPRISING FOR EACH OF SAID SHAFTS A MEMBER ADAPTED TO BREAK WHEN THE TORQUE TRANSMITTED EXCEEDS A PREDETERMINED VALUE.
Claim 2
Dependent Claim
122 words
IN AN AIRCRAFT HAVING A LEAST ONE ENGINE, A PLURALITY OF SHAFTS DRIVEN BY SAID ENGINE, A PLURALITY OF PROPELLERS DRIVEN BY SAID SHAFTS RESPECTIVELY AND MEANS FOR MECHANICALLY COUPLING SAID SHAFTS TO COMPEL THEM TO ROTATE OF THE SAME SPEEK, A SAFETY DEVICE COMPRISINGG IN COMBINATION FREE WHEEL MECHANISMS INTERPOSED BETWEEN SAID ENGINE AND SAID SHAFTS RESPECTIVELY TO PERMIT SAID SHAFTS TO ROTATE AT A SPEED HIGHER THAN THAT T WHICH THEY ARE DRIVEN BY SAID ENGINE; A CLUTCH INTERPOSED BETWEEN EACH OF SAID SHAFTS AND THE CORRESPONDING PROPELLER, MEANS FOR CONTROLLING SAID CLUTCH; AND SAID MEANS FOR MECHANICALLY COUPLING SAID SHAFTS COMPRISING FOR EACH OF SAID SHAFTS A MEMBER ADAPTED TO BREAK WHEN THE TORQUE TRANSMITTED EXCEEDS A PREDETERMINED VALUE.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |