Patent ID: 9476483
Filing Date: 2016-10-25
CPC Classification: F16H

Claim Text:
1. A multi stage transmission for a vehicle, comprising: an input shaft and an output shaft; a first planetary gear device, a second planetary gear device, a third planetary gear device, and a fourth planetary gear device configured to transfer a rotating force between the input shaft and the output shaft and each including three rotating elements; and at least six shift elements connected to at least one of the three rotating elements of the first, second, third, and fourth planetary gear devices, wherein a first rotating element of the first planetary gear device is selectively connected to a first rotating element and a second rotating element of the second planetary gear device, respectively, a second rotating element of the first planetary gear device is continuously connected to a second rotating element of the third planetary gear device, and a third rotating element of the first planetary gear device is selectively connected to the first rotating element of the second planetary gear device and a third rotating element of the third planetary gear device, respectively, the second rotating element of the second planetary gear device is continuously connected to the input shaft and a third rotating element of the second planetary gear device is continuously connected to a first rotating element of the third planetary gear device, the first rotating element of the third planetary gear device is continuously connected to a first rotating element of the fourth planetary gear device and the second rotating element of the third planetary gear device is continuously connected to a third rotating element of the fourth planetary gear device, and the first rotating element of the fourth planetary gear device is fixedly installed by one of the shift elements, the second rotating element of the fourth planetary gear device is continuously connected to the output shaft, and the third rotating element of the fourth planetary gear device is fixedly installed by any other one of the shift elements.