Extendable shock strut

Details Extendable shock strut Extendable shock strut

1983-05-10

1987-01-06

Barefoot, Galen L.

Aeronautics and astronautics

Landing gear

244102R, 244 63, 244104FP, B64C 2502, B64C 2560

Patent

active

046340823

ABSTRACT:
An extendable shock strut comprising a strut housing having an open end and a closed end and a piston including a piston housing and a piston head slidable in the strut housing. The piston housing and the strut housing are adapted to move a selected distance relative to one another under normal usage. A source of high pressure gas is provided coupled to the shock strut for rapidly driving the strut housing and the piston housing relative to one another to an extended position. In a particular embodiment of the invention, an expandable chamber is formed from the closed end of the strut housing and a secondary piston slidable in the strut housing and positioned between the closed end of the strut housing and the piston head. The high pressure gas rapidly expands the chamber and drives the secondary piston toward the piston head to cause the piston housing and the strut housing to move relative to one another to the extended position.

REFERENCES:
patent: 1024429 (1912-04-01), Voller
patent: 1745081 (1930-01-01), Crumbaugh
patent: 2735634 (1956-02-01), Fosness
patent: 2814482 (1957-11-01), Anderson et al.
patent: 2856143 (1958-10-01), Westcott, Jr.
patent: 3140084 (1964-07-01), Schmidt
patent: 3426651 (1969-02-01), Arendarski

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