Vibration damper with adjustable damping force
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United States of America Patent
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Mar 28, 2006
Grant Date -
Jul 15, 2004
app pub date -
Dec 22, 2003
filing date -
Dec 21, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A piston is guided with freedom of axial movement in a damping medium-filled pressure tube, the piston dividing the pressure tube into a working space on the piston rod side of the piston and a working space on the side away from the piston rod. The medium can flow in either direction through a fluid connection between the two working spaces of the pressure tube, in which connection an adjustable damping valve for the incoming flow is provided for when the piston rod is traveling inward. The outgoing flow side of the valve is connected at least to the working space on the piston rod side of the piston and a compensating space. The adjustable damping valve can be controlled by way of a sidestream inside the fluid connection between the working space on the side away from the piston rod and the working space on the piston rod side of the piston, the adjustable damping valve having a sidestream channel leading to the compensating space.
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