US3276727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compensating boundary layer control nozzle
Assignee: Individual
•
Filing: 1965-04-26
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Granted: 1966-10-04
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Expires: 1985-04-26
Abstract
No abstract record available.
Inventors
- 👤 Clark Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:07
CPC Classifications
B; B64; B64C; B64C21/00; B64C21/02; B64C21/04; B64C2230/00; B64C2230/04; B64C2230/06; Y; Y02; Y02T; Y02T50/00; Y02T50/10; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7737
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A POWERED AIRFOIL, ADAPTED TO BE PRESENTED TO A FLOW OF AIR, INCLUDING UPPER AND LOWER SURFACES MERGING INTO A LEADING EDGE AND A TRAILING EDGE, BOUNDARY LAYER CONTROL MEANS COMPRISING A VARIABLE-AREA JET NOZZLE DISPOSED IN THE LEADING EDGE PORTION OF THE UPPERMOST ONE OF SAID SURFACE IN A MANNER TO DIRECT A BLOWING JET REARWARDLY OVER SAID SURFACE, DUCT MEANS FOR COMMUNICATING AIR AT A RELATIVELY HIGH PRESSURE FROM AN AIRCRAFT ENGINE TO SAID NOZZLE FOR DISCHARGING SAID BLOWING JET THEREFROM INTO THE CIRCULATORY FLOW ABOUT SAID AIRFOIL, THE AREA OF SAID JET NOZZLE BEING VARIED AUTOMATICALLY IN CORRELATION WITH CHANGES IN ENGINE POWER OUTPUT, AND
Claim 2
Dependent Claim
108 words
A POWERED AIRFOIL, ADAPTED TO BE PRESENTED TO A FLOW OF AIR, INCLUDING UPPER AND LOWER SURFACES MERGING INTO A LEADING EDGE AND A TRAILING EDGE, BOUNDARY LAYER CONTROL MEANS COMPRISING A VARIABLE-AREA JET NOZZLE DISPOSED IN THE LEADING EDGE PORTION OF THE UPPERMOST ONE OF SAID SURFACE IN A MANNER TO DIRECT A BLOWING JET REARWARDLY OVER SAID SURFACE, DUCT MEANS FOR COMMUNICATING AIR AT A RELATIVELY HIGH PRESSURE FROM AN AIRCRAFT ENGINE TO SAID NOZZLE FOR DISCHARGING SAID BLOWING JET THEREFROM INTO THE CIRCULATORY FLOW ABOUT SAID AIRFOIL, THE AREA OF SAID JET NOZZLE BEING VARIED AUTOMATICALLY IN CORRELATION WITH CHANGES IN ENGINE POWER OUTPUT, AND
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |