Patent ID: 8876653

Claim:
A planetary gear train of an automatic transmission for a vehicle, comprising: a first shaft receiving torque of an engine; a second shaft parallel with the first shaft; a first planetary gear set on the first shaft, and having a first rotation element selectively operated as a fixed element or an output element, a second rotation element directly connected to the first shaft and operated as an input element, and a third rotation element operated as a selective output element; a compound planetary gear set formed by combining a second planetary gear set and a third planetary gear set, and having a fourth rotation element selectively connected to the second and third rotation elements through first and second externally-meshed gear sets, a fifth rotation element connected to an output gear and always operated as an output element, a sixth rotation element selectively connected to the first rotation element through a third externally-meshed gear set, and a seventh rotation element selectively connected to the third rotation element through the second externally-meshed gear set; three transfer gears, wherein each of the three transfer gears includes a transfer drive gear and a transfer driven gear forming each of the first, second and third externally-meshed gear sets; and frictional elements selectively interconnecting the rotation elements or selectively connecting the rotation elements to a transmission housing; wherein the first planetary gear set is a single pinion planetary gear set including a first sun gear, a first planet carrier, and a first ring gear as rotation elements thereof, the second planetary gear set is a single pinion planetary gear set including a second sun gear, a second planet carrier, and a second ring gear as rotation elements thereof, and the third planetary gear set is a single pinion planetary gear set including a third sun gear, a third planet carrier, and a third ring gear as rotation elements thereof; and wherein the first rotation element includes the first sun gear, the second rotation element includes the first planet carrier, the third rotation element includes the first ring gear, the fourth rotation element includes the second sun gear, the fifth rotation element includes the third ring gear, the sixth rotation element includes the second planet carrier and the third planet carrier, and the seventh rotation element includes the second ring gear and the third sun gear.