Patent ID: 8029405

Claim:
A gear train of an automatic transmission for vehicles comprising: a first planetary gear set comprising a first rotation element always operating as a fixed element, a second rotation element forming a first intermediate output pathway which always outputs a reduced rotation speed, and a third rotation element forming an input pathway which is connected to an input shaft and forming a second intermediate output pathway which outputs a rotation speed of the input shaft; a second planetary gear set comprising a fourth rotation element forming a first intermediate input pathway directly connected to the first intermediate output pathway, a fifth rotation element forming a third intermediate output pathway and operating as a selective fixed element, and a sixth rotation element operating as a selective fixed element, wherein two rotation elements of the fourth, fifth, and sixth rotation elements are selectively connected such that the second planetary gear set becomes a direct-coupling state, and one of the fifth and sixth rotation elements forms a first variable input pathway which is selectively connected to the second intermediate output pathway; a third planetary gear set configured to comprise seventh, eighth, ninth, and tenth rotation elements by combining two planetary gear sets, wherein the seventh rotation element forms a second intermediate input pathway which is directly connected to the third intermediate output pathway, the tenth rotation element forms a second variable input pathway which is selectively connected to the first intermediate output pathway, the eighth rotation element forms a third variable input pathway which is selectively connected to the input shaft and operates as a selective fixed element, and the ninth rotation element forms a final output pathway which is connected to an output shaft; and a friction member comprising a plurality of clutches disposed for selective connections of the first, second, and third variable input pathways and a selective direct-coupling of the second planetary gear set, and a plurality of brakes disposed between the rotation elements operating as the fixed element and a transmission housing.