US3608314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thrust reverser
Assignee: Rolls Royce PLC
•
Filing: 1969-08-25
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Granted: 1971-09-28
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Expires: 1989-08-25
Abstract
Abstract A THRUST REVERSER FOR A GAS TURBINE ENGINE COMPRISES AN ANNULAR DUCT ADAPTED TO HAVE GASES FROM THE ENGINE PASS THERETHROUGH AND DEFINED BY RADIALLY INNER AND RADIALLY OUTER WALLS, THE RADIALLY OUTER WALL HAVING A CIRCUMFERENTIALLY EXTENDING OPENING, A PLURALITY OF ANGULARLY SPACED APART FLAPS MOVABLE BETWEEN A FIRST POSITION IN WHICH THEY CLOSE THE SAID OPENING AND A SECOND POSITION IN WHICH THEY EXTEND ACROSS AND AT LEAST PARTIALLY CLOSE THE ANNULAR DUCT TO THE REAR OF THE OPENING, EACH FLAP COMPRISING FRONT AND REAR FLAP PORTIONS, THE FRONT FLAP PORTION BEING FOLDED IN FRONT OF THE REAR PORTION IN THE ANNULAR DUCT WHEN THE FLAPS ARE IN THE SECOND POSITION.
Inventors
- 👤 Rowan Herbert Colley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:59
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/54; F02K1/64; F02K1/70; F02K1/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |