Aeronautics and astronautics – Landing gear – Retractable
Reexamination Certificate
2005-08-30
2008-08-26
Mansen, Michael R. (Department: 3644)
Aeronautics and astronautics
Landing gear
Retractable
Reexamination Certificate
active
07416156
ABSTRACT:
Disclosed is an arrangement in which the main landing gear assemblies of a large commercial airplane are each joined to the airplane at four attachment points. Two of the attachment points connect the landing gear side brace and drag brace to the airplane. The two remaining attachment points are aft and forward trunnions that are mounted to the airplane wing. The aft trunnion pivotally connects one side of the landing gear shock strut to the airplane and carries both vertical and torsional loading. The forward trunnion is pivotally connected to the other side of the shock strut by a trunnion link. An actuator is coupled between the shock strut and the trunnion link. When the landing gear is down and locked the actuator is not activated and the trunnion link does not have the rigidity and stiffness required to transfer vertical loads to the forward trunnion. When the actuator is activated, the combination of the actuator and trunnion link rigidly interconnects the shock strut with the forward trunnion so that four point mounting stabilization is present during landing gear retraction, extension and stowage.
REFERENCES:
patent: 2082598 (1937-06-01), Saulnler
patent: 2332453 (1943-10-01), Martin
patent: 2360535 (1944-10-01), Ashton
patent: 2559451 (1951-07-01), McBrearty
patent: 2668030 (1954-02-01), Smith et al.
patent: 2939655 (1960-06-01), Hartel
patent: 2960288 (1960-11-01), Hartel
patent: 3038687 (1962-06-01), Hartel
patent: 3356318 (1967-12-01), Livshits et al.
patent: 4047681 (1977-09-01), Hartel
patent: 4087062 (1978-05-01), Masclet
patent: 4328939 (1982-05-01), Davies et al.
patent: 4345727 (1982-08-01), Brown et al.
patent: 4392623 (1983-07-01), Munsen et al.
patent: 4907760 (1990-03-01), Sealey et al.
patent: 4907761 (1990-03-01), Derrien et al.
patent: 5086995 (1992-02-01), Large
patent: 5908174 (1999-06-01), Churchill et al.
patent: 6345787 (2002-02-01), Tighe et al.
patent: 6679452 (2004-01-01), Cottet
patent: 6786451 (2004-09-01), Courtois et al.
patent: 6796124 (2004-09-01), Kutlucinar
patent: 6805320 (2004-10-01), Derrien et al.
patent: 6824100 (2004-11-01), Cheetham
patent: 6938416 (2005-09-01), Kutlucinar
patent: 6942182 (2005-09-01), Quayle
patent: 7066429 (2006-06-01), Mellor et al.
patent: 0031602 (1981-08-01), None
patent: 1016590 (2000-07-01), None
patent: 1210265 (2003-05-01), None
patent: 1239919 (1971-07-01), None
patent: 82/02180 (1982-07-01), None
Christensen O'Connor Johnson & Kindness
Mansen Michael R.
Messier-Dowty (USA), Inc.
Sanderson Joseph W
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