Spring devices – Vehicle – Comprising compressible fluid
Patent
1986-09-12
1988-04-05
Kashnikow, Andres
Spring devices
Vehicle
Comprising compressible fluid
92 9, 92168, 1375133, 188268, 188276, 18832222, F16F 500, F16F 930, F15B 1522, F10K 1500
Patent
active
047354020
ABSTRACT:
A vibration isolating and damping suspension strut for vehicle undercarriages comprising an elongated cylinder and piston structure wherein the cylinder is divided into opposed chambers which are in communication with each other by passages formed in the piston and in a flow restricting shuttle valve mounted on the piston rod. When the strut undergoes a retraction stroke of the piston to absorb loads silicone fluid is compressed in the opposed chambers and transferred from the chamber opposite the piston rod to the rod side chamber through passages in the piston only. When the strut rebounds or extends its piston rod fluid is forced to flow through passages in the shuttle valve member and the piston flow passages at a more restricted rate. The piston flow passages and the shuttle valve are arranged to direct fluid flow toward the outer cylinder borewall to improve heat transfer to the exterior of the strut and minimize heating of the fluid contained in the cylinder chambers. Alternate embodiments of the suspension strut have spiral fluid transfer grooves formed on the periphery of the piston or on a cylinder sleeve insert member.
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Kashnikow Andres
Liquid Spring Investors, Ltd.
Oberleitner Robert J.
LandOfFree
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