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US3790106A Expired / Lapsed US ⏱️ 0.0 years remaining

Flap system

Assignee: Individual
•
Filing: 1973-01-24
•
Granted: 1974-02-05
•
Expires: 1993-01-24
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Abstract

Abstract A flap system for improving the lifting capabilities of aircraft wings and for alleviating the effects of wind gusts acting upon aircraft including flaps pivotally mounted near the trailing edges of the aircraft''s wings, which each have a separate and distinctive leading edge portion and a trailing portion which are pivotally connected. Locking apparatus are provided which can be actuated to lock the leading edge portion and the trailing edge portion of each flap together, and to maintain the leading edge portion of each flap in a stationary position relative to the wing when the trailing flap portion is disengaged from the leading edge flap portion. When the leading edge flap portion and the trailing edge flap portion are locked together, the flap serves as a high lift flap and when the leading edge flap portion is held in a stationary position with respect to the wing and the trailing edge flap portion is disengaged from the leading edge flap portion, the trailing edge flap portion is freely floating and acts as a gust alleviation flap.

Inventors

  • 👤 T Sweeney
  • 👤 W Schweizer
  • 👤 J Morris

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 22:23
CPC Classifications
B; B64; B64C; B64C17/00

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 102 words
An aircraft flap system for winged aircraft comprising flap means located near the trailing edge of each wing of said aircraft for increasing the effective lift of said wings, said flap means including means for alleviating the effects of wing gusts acting upon said aircraft and means operatively connected to said gust alleviating means for alternatively placing said gust alleviating means in a lift increasing mode when said flap means are used to increase the effective lift of said wings and in a gust alleviating mode when it is desired to eliminate or reduce the effects of wing gusts upon said aircraft.
Claim 2
Dependent Claim 102 words
An aircraft flap system for winged aircraft comprising flap means located near the trailing edge of each wing of said aircraft for increasing the effective lift of said wings, said flap means including means for alleviating the effects of wing gusts acting upon said aircraft and means operatively connected to said gust alleviating means for alternatively placing said gust alleviating means in a lift increasing mode when said flap means are used to increase the effective lift of said wings and in a gust alleviating mode when it is desired to eliminate or reduce the effects of wing gusts upon said aircraft.
Claim 3
Dependent Claim 27 words
The aircraft flap system of claim 1 wherein said gust alleviating means comprises at least one flap which is to at least a limited degree freely floating.
Claim 4
Dependent Claim 30 words
The aircraft flap system of claim 2 further comprising means associated with said freely floating flap for varying the amount of possible free floating movement of said freely floating flap.
Claim 5
Dependent Claim 44 words
The aircraft flap system oF claim 1 further comprising means associated with said flap means for locking at least a portion of said flap means to the adjacent wing of said aircraft when said gust alleviating means is placed in the gust alleviating mode.
Claim 6
Dependent Claim 41 words
The aircraft flap system of claim 1 further comprising means associated with said gust alleviating means for locking said guist alleviating means to an adjacent portion of said flap means when said gust alleviating means is in the lift increasing mode.
Claim 7
Dependent Claim 33 words
The aircraft flap system of claim 1 wherein said flap means includes a trailing edge portion and said gust alleviating means comprises a trailing edge portion pivotally connected to said leading edge portion.
Claim 8
Dependent Claim 51 words
The aircraft flap system of claim 6 wherein said mode placing means includes means for locking said trailing edge portion to said leading edge portion to prevent relative pivotal movement between said trailing edge portion and said leading edge portion when said trailing edge portion is in the lift increasing mode.
Claim 9
Dependent Claim 45 words
The aircraft flap system of claim 6 wherein said mode placing means includes means for locking said leading edge portion of said flap means to an adjacent portion of a wing of said aircraft when said trailing edge portion is in the gust alleviating mode.
Claim 10
Dependent Claim 24 words
The aircraft flap system of claim 8 wherein said trailing edge portion is freely floating within limits when placed in the gust alleviating mode.
Claim 11
Dependent Claim 23 words
The aircraft flap system of claim 9 further comprising means for varying the limits in which said trailing edge portion is freely floating.

References Cited (Backward Citations)

US2734704A Cited
US2655326A Cited
US2742245A Cited
US2908454A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-02-04 1977-08-06 1978-02-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-02-04 1981-08-06 1982-02-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-02-04 1985-08-06 1986-02-05 $7700.00 Window Closed / Lapsed

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