Patent ID: 9279479
Filing Date: 2016-03-08
CPC Classification: F16H

Claim Text:
1. A multistage automatic transmission for a vehicle, comprising: an input shaft through which power is input; a first composite planetary gear set including a first planetary gear set and a second planetary gear set sequentially arranged in an axial direction of the input shaft and each of the first and second planetary gear sets including three rotary members, in which a pair of rotary members among respective rotary members of the first and second planetary gear sets are directly connected to each other, another pair of rotary members are selectively connected to each other, and a rotary member of the second planetary gear set, of remaining rotary members is directly connected to the input shaft; a first brake restricting rotation of a final remaining rotary member of the first composite planetary gear set; a first clutch selectively connecting a rotary member of the another pair of rotary members, which are selectively connected to each other in the first composite planetary gear set, directly to the input shaft; a second brake restricting rotation of a rotary member of the first planetary gear set that is connected to the first clutch; a second clutch selectively connecting the another pair of rotary members of the first composite planetary gear set that are selectively connected to each other; and a second composite planetary gear set arranged coaxially with the input shaft and including a plurality of rotary members, wherein: