Patent US3237892A successfully refreshed from Google Patents.
US3237892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft aerodynamic lifting member
Assignee: Power Jets Research and Development Ltd
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Filing: 1963-08-29
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Granted: 1966-03-01
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Expires: 1983-08-29
Abstract
No abstract record available.
Inventors
- 👤 Elliott John Smithurst
- 👤 Lilley Geoffrey Michael
- 👤 Alexander Alan John
- 👤 John J Spillman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:25
CPC Classifications
B; B64; B64C; B64C23/00; B64C23/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
AN AIRCRAFT INCLUDING A WING OF LOW ASPECT RATIO AND HAVING A HIGHLY SWEPT-BACK LEADING EDGE, LIPS DEFINING A SLOT SHAPED DISCHARGE APERTURE EXTENDING ALONG AT LEAST A PART OF THE WING LEADING EDGE, AND AT LEAST ONE JET PROPULSION ENGINE ARRANGED TO DISCHARGE ITS TOTAL EFFLUX AS A PROPULSIVE JET STREAM IN THE FORM OF A SHEET FROM THE SLOT SHAPED DISCHARGE APERTURE, THE SHEET BEING DIRECTED OUTWARDLY WITH RESPECT TO THE DIRECTED OF FLIGHT OF THE AIRCRAFT TO STIMULATE THE SHEDDING OF A VORTEX SHEET AND TO PROVIDE A REARWARD COMPONENT OF THRUST FOR FORWARD PROPULSION OF THE AIRCRAFT.
Claim 2
Dependent Claim
101 words
AN AIRCRAFT INCLUDING A WING OF LOW ASPECT RATIO AND HAVING A HIGHLY SWEPT-BACK LEADING EDGE, LIPS DEFINING A SLOT SHAPED DISCHARGE APERTURE EXTENDING ALONG AT LEAST A PART OF THE WING LEADING EDGE, AND AT LEAST ONE JET PROPULSION ENGINE ARRANGED TO DISCHARGE ITS TOTAL EFFLUX AS A PROPULSIVE JET STREAM IN THE FORM OF A SHEET FROM THE SLOT SHAPED DISCHARGE APERTURE, THE SHEET BEING DIRECTED OUTWARDLY WITH RESPECT TO THE DIRECTED OF FLIGHT OF THE AIRCRAFT TO STIMULATE THE SHEDDING OF A VORTEX SHEET AND TO PROVIDE A REARWARD COMPONENT OF THRUST FOR FORWARD PROPULSION OF THE AIRCRAFT.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |