Patent ID: 8597149

Claim:
A transmission comprising: an input shaft; an output shaft fixedly rotatably connected to a third group of gears; a first transmission assembly mechanically connected to the input shaft, the first transmission assembly comprising: a first intermediate shaft configured to connect with a first group of gears via a first group of clutches, wherein the first group of gears mesh with the third group of gears; a first planetary gear set, comprising: a first ring gear configured to engage and disengage with the first intermediate shaft; a second transmission assembly mechanically connected to the input shaft and the output shaft, the second transmission assembly comprising: a second intermediate shaft configured to connect with a second group of gears via a second group of clutches, wherein the second group of gears mesh with the third group of gears; and a second planetary gear set, comprising: a second ring gear configured to engage and disengage with the second intermediate shaft.