Friction clutch and method to reduce drag loss in friction clutch
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United States of America Patent
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Feb 4, 2014
Grant Date -
Oct 3, 2013
app pub date -
Jun 3, 2013
filing date -
Feb 28, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A wet clutch includes a rotatable hub and a rotatable drum having an aperture extending therethrough. A plurality of outer clutch plates are fixed for rotation with the drum. A plurality of inner clutch plates are fixed for rotation with the hub and interleaved with the outer clutch plates. A piston is moveable to apply a force to the inner and outer clutch plates to transfer torque between the hub and the drum. A cover is moveable relative to the drum between first and second positions. The cover selectively restricts a flow of fluid through the aperture in the drum when in the first position.
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