PLANETARY GEAR TRAIN OF AUTOMATIC TRANSMISSION FOR VEHICLE
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United States of America Patent
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Issued Date -
Jun 1, 2017
app pub date -
Jun 28, 2016
filing date -
Nov 27, 2015
priority date (Note) -
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Abstract
A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving torque of an engine, an output shaft outputting changed torque of the engine, a first planetary gear set, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, a first rotation shaft selectively connectable to the transmission housing, a second rotation shaft, a third rotation shaft, a fourth rotation shaft directly connected to the input shaft, a fifth rotation shaft selectively connectable to at least one of the second rotation shaft and the third rotation shaft, a sixth rotation shaft directly connected to the output shaft, a seventh rotation shaft selectively connectable to the second rotation shaft, and selectively connectable to the transmission housing, and an eighth rotation shaft selectively connectable to the input shaft.
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