Fluid-sealed anti-vibration device
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United States of America Patent
Stats
-
Nov 23, 2004
Grant Date -
Oct 10, 2002
app pub date -
Aug 16, 2001
filing date -
Apr 10, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A fluid-sealed anti-vibration device is provided, in which a cone-shaped mounting section provided with an elastic body section which generates membrane resonance, and a cylindrical bushing section provided with an end wall and an elastic partition wall which also generate membrane resonance are integrally provided. When the fluid is filled and sealed in the cone-shaped mounting section and the cylindrical bushing section, the characteristics where a fluid is sealed in only the cone-shaped mounting section and the characteristics where the fluid is sealed in only the cylindrical busing section are coupled. Furthermore, the dynamic spring peaks and the dynamic spring bottoms, which are generated one by one in both sections, cancel each other. As a result, it is possible to realize the low dynamic spring effect in a wider frequency range by lowering the dynamic spring peak.
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