US3332644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Augmentor wing system for transport aircraft
Assignee: De Havilland Aircraft of Canada Ltd
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Filing: 1966-04-29
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Granted: 1967-07-25
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Expires: 1986-04-29
Abstract
No abstract record available.
Inventors
- 👤 Whittley Donald Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:33
CPC Classifications
B; B64; B64C; B64C23/00; B64C23/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A SUPPLEMENTARY LIFT SYSTEM FOR AIRCRAFT HAVING PORT AND STARBOARD WING ELEMENTS AND ADAPTED AT LESS THAN CRUISING SPEEDS TO DEVELOP A LARGE LIFT COMPONENT WITH SAID ELEMENTS AND HAVING REAR FLAP STRUCTURE FOR SAID WING ELEMENTS COMPRISING: UPPER AND LOWER REAR FLAP MEMBERS AT LEAST ONE OF WHICH IS HINGED TO ITS CORRESPONDING WING ELEMENT AND MEANS FOR MOVING SAME ON SAID HINGE TO CONTROL FLAP ANGLES; MEANS NORMALLY MAINTAINING SAID UPPER AND LOWER FLAPS IN CLOSE ASSEMBLY AND CONTROLLABLE TO MOVE THE UPPER OF SAID FLAPS UPWARDLY AND FORWARDLY RELATIVE TO SAID LOWER FLAP; MEANS FOR PROJECTING THRUST GASES FROM SAID WING ELEMENTS TO A GAP DEFINED BY THE OPENING OF SAID UPPER FLAP RELATIVE TO SAID LOWER FLAP THEREBY TO INDUCT SUBSTANTIAL QUANTITIES OF AIR FROM THE UPPER SURFACES
Claim 2
Dependent Claim
132 words
A SUPPLEMENTARY LIFT SYSTEM FOR AIRCRAFT HAVING PORT AND STARBOARD WING ELEMENTS AND ADAPTED AT LESS THAN CRUISING SPEEDS TO DEVELOP A LARGE LIFT COMPONENT WITH SAID ELEMENTS AND HAVING REAR FLAP STRUCTURE FOR SAID WING ELEMENTS COMPRISING: UPPER AND LOWER REAR FLAP MEMBERS AT LEAST ONE OF WHICH IS HINGED TO ITS CORRESPONDING WING ELEMENT AND MEANS FOR MOVING SAME ON SAID HINGE TO CONTROL FLAP ANGLES; MEANS NORMALLY MAINTAINING SAID UPPER AND LOWER FLAPS IN CLOSE ASSEMBLY AND CONTROLLABLE TO MOVE THE UPPER OF SAID FLAPS UPWARDLY AND FORWARDLY RELATIVE TO SAID LOWER FLAP; MEANS FOR PROJECTING THRUST GASES FROM SAID WING ELEMENTS TO A GAP DEFINED BY THE OPENING OF SAID UPPER FLAP RELATIVE TO SAID LOWER FLAP THEREBY TO INDUCT SUBSTANTIAL QUANTITIES OF AIR FROM THE UPPER SURFACES
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |