VIBRATION DAMPING APPARATUS
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United States of America Patent
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Jun 13, 2019
app pub date -
Sep 29, 2017
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Sep 30, 2016
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Abstract
A vibration damping apparatus that includes a plurality of rotational elements including an input to which a torque from an engine is transferred, and an output; a first torsional stiffness mechanism arranged between the input and the output and having a positive torsional stiffness; and a second torsional stiffness mechanism configured to act in parallel to the first torsional stiffness mechanism between the input and the output and having a negative torsional stiffness, wherein the negative torsional stiffness of the second torsional stiffness mechanism increases on a negative side as a rotation speed of the engine increases.
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