One-way clutched damper for automatic belt tensioner
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United States of America Patent
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Apr 24, 2012
Grant Date -
Mar 6, 2008
app pub date -
Aug 31, 2006
filing date -
Aug 31, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A new asymmetrically damped tensioner is provided utilizing a roller clutch engaged with a tensioner arm through a frictional contact. During normal operation, the roller clutch enables the tensioner arm to pivot in a first direction to take up belt slack with negligible frictional damping applied to the motion of the tensioner arm. When the tensioner arm pivots in a second direction, away from the belt, however, in a condition commonly known as wind-up, the roller clutch engages and creates a frictional linkage between the tensioner arm and a fixed surface. This frictional linkage provides asymmetric frictional damping to the tensioner to limit movement in the second direction and combat wind-up.
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