Pulley for a continuously-variable-ratio drive
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United States of America Patent
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Feb 20, 2007
Grant Date -
May 13, 2004
app pub date -
Oct 22, 2003
filing date -
Oct 25, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A pulley for a continuously-variable-ratio drive, having a fixed half-pulley fitted to a shaft of the drive; a movable half-pulley mounted to slide axially with respect to the fixed half-pulley to define with it a V groove of variable size for a V belt; and a torque-sensitive, axial thrust compensating device having an acceleration cam and a deceleration cam, which are interposed between the fixed half-pulley and the movable half-pulley to generate thrust on the movable half-pulley in the compression direction of the belt in response to both a drive torque and a braking torque.
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