Eight speed automatic transmission
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United States of America Patent
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May 7, 2013
Grant Date -
Aug 9, 2012
app pub date -
Apr 16, 2012
filing date -
Apr 2, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An eight speed automatic transmission is provided having an input member, an output member, four planetary gear sets and five torque transmitting devices. Three of the planetary gear sets are simple and one planetary gear set is compound. Each of the plurality of planetary gear sets has first, second and third members: a sun gear, a ring gear and a planet carrier having a plurality of planet gears rotatably disposed thereon. Three of the torque transmitting devices are clutches and two of the devices are brakes. Eight embodiments of the transmission having different arrangements of the planetary gear sets, clutches and brakes are disclosed.
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