Proportionally damped power transfer device using torsion spring force
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United States of America Patent
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Apr 18, 2023
Grant Date -
May 28, 2020
app pub date -
Jan 29, 2020
filing date -
Sep 10, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
In an aspect, a power transfer device, such as a decoupler, is provided for transferring torque between a shaft and a belt. The device includes: a hub configured to couple to the shaft, a pulley rotatably coupled to the hub that includes a power transmitting surface configured to engage the belt, an isolation spring to transfer a rotational load from one of the pulley and the hub to the other of the pulley and the hub, optionally a one-way clutch to permit overrunning of one of the pulley and the hub relative to the other of the pulley and the hub in a first direction, and a damping member positioned to be driven into frictional engagement with a friction surface by a force from the isolation spring acting on the damping member that varies based on the rotational load transferred by the isolation spring.
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