US3109494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerofoil systems
Assignee: Power Jets Research and Development Ltd
•
Filing: 1962-04-02
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Granted: 1963-11-05
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Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 Davidson Ivor Macaulay
- 👤 Cheeseman Ian Clifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:29
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/22; B64C27/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
AN AEROFOIL SYSTEM COMPRISING AN AEROFOIL BODY OF SUBSTANTIALLY CIRCULAR CROSS-SECTION AND FORMED IN ITS SURFACE WITH AT LEAST TWO SPANWISE-EXTENDING DISCHARGE APERTURES, MEANS CONNECTED TO SUPPLY FLUID TO SAID APERTURES, SAID APERTURES BEING SHAPED AND ARRANGED TO DISCHARGE STREAMS OF THE FLUID AS THIN LAYERS UPWARDLY AND DOWNWARDLY TOWARDS ONE ANOTHER OVER THE REARWARD PART OF THE AEROFOIL BODY SURFACE, AND MEANS FOR VARYING THE RELATIVE MOMENTUM OF THE TWO STREAMS.
Claim 2
Dependent Claim
72 words
AN AEROFOIL SYSTEM COMPRISING AN AEROFOIL BODY OF SUBSTANTIALLY CIRCULAR CROSS-SECTION AND FORMED IN ITS SURFACE WITH AT LEAST TWO SPANWISE-EXTENDING DISCHARGE APERTURES, MEANS CONNECTED TO SUPPLY FLUID TO SAID APERTURES, SAID APERTURES BEING SHAPED AND ARRANGED TO DISCHARGE STREAMS OF THE FLUID AS THIN LAYERS UPWARDLY AND DOWNWARDLY TOWARDS ONE ANOTHER OVER THE REARWARD PART OF THE AEROFOIL BODY SURFACE, AND MEANS FOR VARYING THE RELATIVE MOMENTUM OF THE TWO STREAMS.
References Cited (Backward Citations)
GB222845A
Cited
FR597674A
Cited
FR596884A
Cited
FR954413A
Cited
US2792189A
Cited
US2885160A
Cited
US2925129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |