Spring devices – Vehicle – Comprising compressible fluid
Patent
1984-01-23
1985-08-20
Stoner, Jr., Bruce H.
Spring devices
Vehicle
Comprising compressible fluid
188269, 188276, 261 82, 261 94, 261DIG72, F16F 906
Patent
active
045359776
ABSTRACT:
An apparatus for a suspension system in a vehicle provides both spring and damping characteristics in a single unit. Within a closed container that has a variable volume (similar to commonly available shock absorbers), a gas-liquid interfacial system acts under input deflection from the axle of a vehicle to provide both spring and damping characteristics. To increase the damping response time of the system, the interfacial area in contact between the gas and the liquid is increased over the ordinary cross-sectional area of the container. The gas is soluble in the liquid and preferably increases in solubility with an increase in temperature so that, as the temperature increases and the gas expands, the static condition of the container is substantially maintained by the increase in absorption of the gas into the liquid. Preferably, pentane thickened with 3% aluminum octoate and 4% oleic acid is the liquid. It is stored in an open-cell urethane foam having an average pore cell size of approximately 0.05 inch (0.127 cm). This liquid is saturated with hydrogen gas at a pressure of about 500 psi when the apparatus is in its static position.
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Gilday Michael P.
Paccar Inc.
Stoner Jr. Bruce H.
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