TENSIONER
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United States of America Patent
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N/A
Issued Date -
Sep 25, 2014
app pub date -
Oct 25, 2012
filing date -
Oct 29, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The present invention discloses a tensioner which comprises: a base; a swing arm mounted on the base, rotating about a first central axis with respect to the base; an elastic element positioned between the base and the swing arm, which is used for biasing the swing arm to rotate with respect to the base; a frictional device which is located between the elastic; element and the base or the swing arm, for buffering the relative movement between the swing arm and the base, wherein the elastic element exerts along the radial direction a first pressure on the frictional device such that a first frictional force is produced between the frictional device and the base or the swing arm, and the tensioner further comprises a supporting bock which exerts along the radial direction a second pressure on the frictional device such that a second frictional force is produced between the frictional device and the base or the swing arm. Under the combined effect of the first fictional force and the second fictional force, the rotation of the swing arm with respect to the base is buffered, such that the tensioner of the present invention has relatively larger fictional force, that is, damping force.
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