Patent ID: 9581227
Date: 2017-02-28
CPC Classifications: F16H,Y10T

Claim:
1. A transmission for a vehicle comprising: a first input shaft to which power is selectively transmitted by a first clutch; a second input shaft to which power is selectively transmitted by a second clutch, wherein the second input shaft concentrically surrounds the first input shaft; first and second output shafts disposed in parallel with the first and second input shafts; a multiplicity of shifting gears disposed in the first and second output shafts so as to be meshed with gears of the first and second input shafts to respectively form gear steps; a plurality of synchronizing devices configured to selectively couple or decouple the shifting gears to or from the first or second output shafts; and a planetary gear train configured to selectively switch a revolution direction of one of the shifting gears, wherein the planetary gear train includes: