Spring devices – Vehicle – Comprising compressible fluid
Patent
1996-01-24
1999-12-07
Oberleitner, Robert J.
Spring devices
Vehicle
Comprising compressible fluid
267 6426, 1882821, F16F 500
Patent
active
059969792
ABSTRACT:
The invention is in the field of aircraft shock struts, of the type having a piston cylinder and a piston head, for slowing movement of an aircraft structure toward the ground, particularly during landing or take-off. The invention provides a more constant change in pressure across the piston head, that is generally independent of piston head speed, relative to the prior art. The piston head has a damped valve poppet received within the piston head moveable from a first position wherein the damped valve poppet covers a pressure relief orifice to a second position that uncovers a pressure relief orifice, thereby providing a more constant change in pressure across the piston head.
REFERENCES:
patent: 3647239 (1972-03-01), Katsumori
patent: 3888436 (1975-06-01), Sealey
patent: 4524929 (1985-06-01), Gebhard
patent: 4595159 (1986-06-01), Hrusch
patent: 4826094 (1989-05-01), Whiteley
Leffel Kevin L.
Lipka Pamela J.
Oberleitner Robert J.
The B. F. Goodrich Company
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