Fluid-filled type vibration damping device
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United States of America Patent
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Apr 23, 2013
Grant Date -
Jan 13, 2011
app pub date -
Nov 4, 2009
filing date -
Dec 25, 2008
priority date (Note) -
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Abstract
A fluid-filled type vibration damping device wherein a low-frequency orifice passage and at least one high-frequency orifice passage are formed in a partition member, which is supported by a second mounting member; a valve body is disposed at least at one opening of the high-frequency orifice passage and is provided with a spring member that in a nonloaded state positions the valve body away from the opening of the high-frequency orifice passage to hold the high-frequency orifice passage in an open state; and, at times of vibration input, the valve body is adapted to block the high-frequency orifice passage in opposition to a holding force of the spring member.
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