Spring devices – Vehicle – Comprising compressible fluid
Patent
1988-03-31
1989-10-31
Oberleitner, Robert J.
Spring devices
Vehicle
Comprising compressible fluid
92 9, 188274, 18832222, F16F 500, F16F 942, F15B 1522
Patent
active
048772224
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 flow restrictive passages formed in the piston or in the cylinder wall. 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 the restrictive passages resulting in heating of the fluid. When the strut rebounds or extends its piston rod fluid is forced to flow through the restrictive passages preferably at a more restricted rate. The flow passages 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, and preferably in such a way as to minimize intermingling with a significant portion of the remaining fluid.
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patent: 3794309 (1974-02-01), Chrokey et al.
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patent: 3958673 (1976-05-01), Allinquant et al.
patent: 4561641 (1985-12-01), De Young et al.
patent: 4738339 (1988-04-01), Taylor
Liquid Spring Investors, Ltd.
Oberleitner Robert J.
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