Patent ID: 9625009
Date: 2017-04-18
CPC Classifications: F16H

Claim:
1. A planetary gear train of an automatic transmission for a vehicle, the planetary gear train comprising: an input shaft which receives power from an engine; an output shaft which outputs power changed in speed; a first planetary gear set having first, second, and third rotating elements; a second planetary gear set having fourth, fifth, and sixth rotating elements; a third planetary gear set having seventh, eighth, and ninth rotating elements; and six control elements which are disposed between the rotating elements, and disposed at portions where the rotating elements are selectively connected with each other or to a transmission housing, a first rotating shaft including the first rotating element and the ninth rotating element and selectively connected with the input shaft; a second rotating shaft including the second rotating element and the fourth rotating element; a third rotating shaft including the third rotating element and selectively connected with the input shaft or transmission housing; a fourth rotating shaft including the fifth rotating element; a fifth rotating shaft including the sixth rotating element and directly connected with the transmission housing; a sixth rotating shaft including the seventh rotating element and selectively connected with the second rotating shaft or the fourth rotating shaft; and a seventh rotating shaft including the eighth rotating element and selectively connected with the second rotating shaft and simultaneously and is directly connected with the output shaft.