Patent US3090584A successfully refreshed from Google Patents.
US3090584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft
Assignee: Power Jets Research and Development Ltd
•
Filing: 1959-12-23
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Granted: 1963-05-21
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Expires: 1979-12-23
Abstract
No abstract record available.
Inventors
- 👤 Kuchemann Dietrich
- 👤 Lilley Geoffrey Michael
- 👤 Maskell Eric Cyril
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:24
CPC Classifications
B; B64; B64C; B64C23/00; B64C23/06; B64C2230/00; B64C2230/04; B64C2230/16; Y; Y02; Y02T; Y02T50/00; Y02T50/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
AN AIRCRAFT HAVING AN AERODYNAMIC LIFT MEMBER WITH A LEADING PORTION INCLUDING LEADING AND TIP EDGES WHICH IS SWEPT IN RELATION TO THE NORMAL DIRECTION OF FLIGHT OF THE AIRCRAFT AND FROM WHICH IN A GIVEN REGION AIR FLOWING OVER SAID LEADING PORTION IS SHED THEREFROM AS A VORTEX SHEET IN FORWARD FLIGHT, AND COMPRISING LIPS IN, AND EXTENDING ALONG, AT LEST PART OF ONE OF SAID EDGES TO DEFINE IN SAID REGION SLOT SHAPED FLUID DISCHARGE OUTLET MEANS, AND A COMBINATION OF CO-OPERATING MEMBERS IN-
Claim 2
Dependent Claim
86 words
AN AIRCRAFT HAVING AN AERODYNAMIC LIFT MEMBER WITH A LEADING PORTION INCLUDING LEADING AND TIP EDGES WHICH IS SWEPT IN RELATION TO THE NORMAL DIRECTION OF FLIGHT OF THE AIRCRAFT AND FROM WHICH IN A GIVEN REGION AIR FLOWING OVER SAID LEADING PORTION IS SHED THEREFROM AS A VORTEX SHEET IN FORWARD FLIGHT, AND COMPRISING LIPS IN, AND EXTENDING ALONG, AT LEST PART OF ONE OF SAID EDGES TO DEFINE IN SAID REGION SLOT SHAPED FLUID DISCHARGE OUTLET MEANS, AND A COMBINATION OF CO-OPERATING MEMBERS IN-
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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) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |