Center bearing assembly including a support member containing a rheological fluid
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United States of America Patent
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Apr 26, 2005
Grant Date -
Oct 30, 2003
app pub date -
Apr 4, 2003
filing date -
Apr 4, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A center bearing assembly rotatably supports an intermediate portion of a vehicle driveshaft assembly during use. The center bearing assembly includes a rigid bracket that is secured to a support surface of the vehicle, a support member that is supported within the rigid bracket, and an annular bearing that is supported within the support member for rotatably supporting the intermediate portion of the vehicle driveshaft assembly. The support member is formed from a resilient material and has a cavity formed therein. A plurality of bladders is disposed within the cavity formed in the support member. Each of the bladders is filled with a quantity of a rheological fluid. Fluid communication between adjacent pairs of the bladders is provided by respective control valves. A control circuit is provided for selectively generating and applying an energy field to each of the control valves so as to vary the ability of the rheological fluid to flow therethrough between the associated pair of bladders. As a result, the vibration dampening characteristics of the support member can be varied.
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