Multi-speed planetary transmission with three brakes and four clutches
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United States of America Patent
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Sep 24, 2013
Grant Date -
Sep 8, 2011
app pub date -
Nov 29, 2010
filing date -
Mar 3, 2010
priority date (Note) -
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Abstract
A multi-speed transmission includes an input member, an output member, a stationary member, and a first and a second compound planetary gear set. The first compound planetary gear set has a first, a second, a third, a fourth, and a fifth member. The second compound planetary gear set has a first, a second, a third, and a fourth member. The first member of the second compound planetary gear set is continuously connected for common rotation with the output member. An interconnecting member continuously connects the first member of the first compound planetary gear set for common rotation with the second member of the second compound planetary gear set. The transmission has seven torque-transmitting mechanisms, including three brakes and four rotating-type clutches, that are engagable to establish up to fourteen forward speed ratios between the input member and the output member.
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