Patent US3848831A successfully refreshed from Google Patents.
US3848831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuselage flaps for an aircraft
Assignee: Individual
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Filing: 1973-10-23
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Granted: 1974-11-19
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Expires: 1993-10-23
Abstract
Abstract An aircraft includes fuselage flaps which are normally retracted and conform to the configuration of the fuselage and which may be extended outwardly of the fuselage to increase altitude control. The fuselage flaps comprise a first flap positioned rearwardly of the longitudinal center of gravity and hinged on its lower edge about an axis extending upwardly and rearwardly relative to the longitudinal axis of the fuselage. The fuselage flaps also include second and third flaps having their hinge axes aligned with the longitudinal axis of the fuselage and positioned fore and aft of the longitudinal center of gravity of the fuselage. The fuselage flaps further include a fourth and fifth flap aligned with the longitudinal axis of the fuselage at about the longitudinal center of gravity and the fifth flap being hinged to the rear portion of the fourth flap.
Inventors
- 👤 M Geary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:22
CPC Classifications
B; B64; B64C; B64C9/00; B64C9/34; B64C9/36
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
194 words
Control apparatus for an aircraft having a fuselage, said control apparatus comprising a first flap located on a laterally facing side of the fuselage and positioned rearwardly of the longitudinal center of gravity of the aircraft, means mounting said flap on said fuselage for downward swinging from a retracted position to an extended position about an axis which is inclined upwardly and rearwardly relative to the longitudinal axis of said fuselage, a second flap located on said side of said fuselage and positioned between said first flap and said center of gravity, means mounting said second flap on said fuselage for downward swinging from a retracted position to an extended position about an axis extending generally parallel to the longitudinal axis of said fuselage, each of said flaps conforming substantially to the configuration of said fuselage when in its retracted position and projecting outwardly from said side of said fuselage when in its extended position, said second flap being located to channel air to said first flap when said flaps are in said extended positions, and mechanism connected between said flaps and said fuselage and selectively operable to swing said flaps between said positions.
Claim 2
Dependent Claim
194 words
Control apparatus for an aircraft having a fuselage, said control apparatus comprising a first flap located on a laterally facing side of the fuselage and positioned rearwardly of the longitudinal center of gravity of the aircraft, means mounting said flap on said fuselage for downward swinging from a retracted position to an extended position about an axis which is inclined upwardly and rearwardly relative to the longitudinal axis of said fuselage, a second flap located on said side of said fuselage and positioned between said first flap and said center of gravity, means mounting said second flap on said fuselage for downward swinging from a retracted position to an extended position about an axis extending generally parallel to the longitudinal axis of said fuselage, each of said flaps conforming substantially to the configuration of said fuselage when in its retracted position and projecting outwardly from said side of said fuselage when in its extended position, said second flap being located to channel air to said first flap when said flaps are in said extended positions, and mechanism connected between said flaps and said fuselage and selectively operable to swing said flaps between said positions.
Claim 3
Dependent Claim
114 words
Control apparatus as defined in claim 1 further including a third flap located on said side of said fuselage and positioned forwardly of the longitudinal center of gravity of said aircraft, means mounting said third flap on said fuselage for upward swinging from a retracted position to an extended position about an axis extending generally parallel to the longitudinal axis of said fuselage, said third flap conforming substantially to the configuration of said fuselage when in its retracted position and projecting outwardly from said side of said fuselage when in its extended position, and mechanism connected between said third flap and said fuselage and selectively operable to swing said third flap between its positions.
Claim 4
Dependent Claim
110 words
Control apparatus as defined in claim 2 further including a fourth flap located on said side of said fuselage and positioned between said second and third flaps, means mounting said fourth flap on said fuselage for upward swinging from a retracted position to an extended position about an axis extending generally parallel to the longitudinal axis of said fuselage, said fourth flap conforming substantially to the configuration of said fuselage when in its retracted position and projecting outwardly from said side of said fuselage when in its extended position, and mechanism connected between said fourth flap and said fuselage and selectively operable to swing said fourth flap between its positions.
Claim 5
Dependent Claim
105 words
Control apparatus as defined in claim 3 further including a fifth flap mounted on the trailing end of said fourth flap to swing downwardly between a retracted position and an extended position about an axis which is inclined upwardly and rearwardly relative to the longitudinal axis of said fuselage, said fifth flap being disposed in the plane of said fourth flap when in its retracted position and being inclined downwardly and rearwardly from the plane of said fourth flap when in its extended position, and mechanism connected between said fifth flap and said fuselage and selectivEly operable to swing said fifth flap between its positions.
References Cited (Backward Citations)
US3125313A
Cited
US1353212A
Cited
GB477844A
Cited
US2344520A
Cited
US2448075A
Cited
US2461967A
Cited
US2444291A
Cited
US3680816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |