Tensioner
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United States of America Patent
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Issued Date -
Aug 15, 2019
app pub date -
Feb 14, 2018
filing date -
Feb 14, 2018
priority date (Note) -
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Abstract
A tensioner comprising a base, a pivot arm pivotally engaged with the base, a pulley journalled to the pivot arm, a torsion spring urging the pivot arm, the torsion spring loaded in the unwinding direction, the torsion spring engaged with a damping shoe, the damping shoe frictionally engaging the base, and the damping shoe having a damping shoe portion comprising PTFE mixed within a plastic matrix material, the PTFE comprising between 2% and 4% of the plastic matrix material by weight.
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