FLUID TYPE POWER TRANSMISSION DEVICE
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United States of America Patent
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Issued Date -
Apr 20, 2017
app pub date -
Oct 13, 2016
filing date -
Oct 16, 2015
priority date (Note) -
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Abstract
A fluid type power transmission device in which a torque transmission path for transmitting torque from a vehicular engine is provided with a dynamic damper mechanism formed by disposing a plurality of damper springs between an inertial rotating body and a rotation-transmitting member forming part of the torque transmission path. An elastic member always linked to one of the rotation-transmitting member and the inertial rotating body is added to the dynamic damper mechanism. Play occurs in a torque direction between the elastic member and the other of the rotation-transmitting member and the inertial rotating body at a time of low speed rotation, but the elastic member exhibits resilient force between the rotation-transmitting member and the inertial rotating body in response to deformation due to centrifugal force at a time of high speed rotation that is a predetermined rotational speed or greater.
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