US3246335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double slotted flap
Assignee: Individual
•
Filing: 1964-01-15
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Granted: 1966-04-12
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Expires: 1984-01-15
Abstract
No abstract record available.
Inventors
- 👤 Alvarez-Calderon Alberto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:31
CPC Classifications
B; B64; B64C; B64C9/00; B64C9/14; B64C9/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A PRIMARY AIRFOIL HAVING A SPANWISE UPSTREAM EDGE PORTION, MEANS DEFINING A FIRST HIGH LIFT SLOT ADJACENT AND TO THE REAR OF SAID UPSTREAM EDGE PORTION WITH SAID FIRST SLOT HAVING A SLOT INTAKE MOUTH; AN AUXILIARY AIRFOIL MOUNTED ON SAID PRIMARY AIRFOIL FOR MOVEMENT BETWEEN A HIGH SPEED POSITION IN WHICH SAID AUXILIARY AIRFOIL HAS SURFACES COVERING SAID SLOT INTAKE MOUTH AND A SLOW SPEED HIGH LIFT POSITION IN WHICH SAID AUXILIARY AIRFOIL IS MOVED DOWNWARDLY AND FORWARDLY FROM SAID HIGH SPEED POSITION UNCOVERING SAID INTAKE MOUTH, TO A CAMBER INCREASING DISPOSITION IN WHICH SAID AUXILIARY AIRFOIL IS UPSTREAM OF SAID INTAKE MOUTH AND UPSTREAM OF SAID SPANWISE EDGE PORTION, WITH THE SURFACES OF SAID AUXILIARY AIRFOIL IN SAID HIGH LIFT POSITION ADJACENT TO SAID SPANWISE EDGE PORTION TOGETHER WITH A SURFACE PORTION OF SAID SPANWISE EDGE
Claim 2
Dependent Claim
138 words
A PRIMARY AIRFOIL HAVING A SPANWISE UPSTREAM EDGE PORTION, MEANS DEFINING A FIRST HIGH LIFT SLOT ADJACENT AND TO THE REAR OF SAID UPSTREAM EDGE PORTION WITH SAID FIRST SLOT HAVING A SLOT INTAKE MOUTH; AN AUXILIARY AIRFOIL MOUNTED ON SAID PRIMARY AIRFOIL FOR MOVEMENT BETWEEN A HIGH SPEED POSITION IN WHICH SAID AUXILIARY AIRFOIL HAS SURFACES COVERING SAID SLOT INTAKE MOUTH AND A SLOW SPEED HIGH LIFT POSITION IN WHICH SAID AUXILIARY AIRFOIL IS MOVED DOWNWARDLY AND FORWARDLY FROM SAID HIGH SPEED POSITION UNCOVERING SAID INTAKE MOUTH, TO A CAMBER INCREASING DISPOSITION IN WHICH SAID AUXILIARY AIRFOIL IS UPSTREAM OF SAID INTAKE MOUTH AND UPSTREAM OF SAID SPANWISE EDGE PORTION, WITH THE SURFACES OF SAID AUXILIARY AIRFOIL IN SAID HIGH LIFT POSITION ADJACENT TO SAID SPANWISE EDGE PORTION TOGETHER WITH A SURFACE PORTION OF SAID SPANWISE EDGE
References Cited (Backward Citations)
FR543995A
Cited
US2276522A
Cited
FR61015E
Cited
US3041014A
Cited
US2938680A
Cited
US2990140A
Cited
US3089666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |