Aeronautics and astronautics – Landing gear – Retractable
Patent
1990-02-23
1991-08-20
Peters, Jr., Joseph F.
Aeronautics and astronautics
Landing gear
Retractable
2441294, 244102SL, 294 8226, B64C 2526
Patent
active
050407473
ABSTRACT:
A gripping and locking arrangement for an aircraft movable component such as a flap door or undercarriage comprises a piston and a piston rod operative as a means for sensing a closing movement of the flap door or undercarriage, and also operative automatically actively to pull same by means of a closing hook into a position in which it is to be locked. The arrangement includes a locking member displaceable within the piston to move lock elements into a locking position and to hold them in the locking position until the arrangement receives a hydraulic pressure signal for causing lowering of the flap door or undercarriage, and the locking member is then displaced whereby the lock elements move into a release position. The hydraulic oil pressure can then act on the piston to produce displacement thereof into a position in which the closing hook releases the flap door or undercarriage component.
REFERENCES:
patent: 2868482 (1959-01-01), Westcott, Jr.
patent: 3787012 (1974-01-01), Jakubowski, Jr.
patent: 4441674 (1984-04-01), Holtrop
patent: 4568045 (1986-02-01), Mayer
Kane Brian
Laude Jurgen
Feinmechanische Werke Mainz GmbH
Mattix Carla
Peters Jr. Joseph F.
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