Damper
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United States of America Patent
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-
Dec 25, 2012
Grant Date -
Aug 5, 2010
app pub date -
Oct 22, 2008
filing date -
Oct 23, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A damper includes a housing, a hollow outer rotor provided inside the housing, an inner rotor disposed inside the outer rotor to constitute a plurality of liquid chambers and rotating in a state decentered relative to an axial core of the outer rotor, a communicating passage connecting between the liquid chambers, and a valve mechanism moving inside the communicating passage. Viscous fluid is filled between the outer rotor and the inner rotor. When the pressure inside the communicating passage reaches a predetermined value or above due to the rotation of the inner rotor, the communicating passage is closed or a flow passage area of they communicating passage is narrowed, and when the pressure inside the communicating passage falls to the predetermined value or less, the communicating passage is opened.
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