Patent ID: 7628726

Claim:
A vehicle automatic transmission, comprising: an input shaft; a planetary gear that reduces a speed of an input rotation of the input shaft and outputs a reduced speed rotation; a planetary gear set having a first rotation element, a second rotation element, a third rotation element and a fourth rotation element; a first clutch that is capable of transmitting the reduced speed rotation that passes through the planetary gear into the second rotation element; a second clutch that is capable of transmitting the input rotation into the third rotation element; a third clutch that is capable of transmitting the reduced speed rotation that passes through the planetary gear into the first rotation element; a fourth clutch that is capable of transmitting the input rotation into the first rotation element; a first brake that is capable of fixing the first rotation element; a second brake that is capable of fixing the third rotation element; and an output member that is linked to the fourth rotation element, wherein: a hydraulic servo of the fourth clutch is disposed between the planetary gear set and the planetary gear in an axial direction; a hydraulic servo of the third clutch is disposed on a side opposite, in the axial direction, from the planetary gear set as to the hydraulic servo of the fourth clutch; an outer circumferential side linking path that links the input shaft and the fourth clutch and passes through an outer circumferential side of the third clutch; and an inner circumferential side linking path that links the third clutch and the fourth clutch and the first rotation element of the planetary gear set and passes through an inner circumferential side of the fourth clutch.