Patent ID: 7815537
Filing Date: 2010-10-19
Classification: F16H

Abstract:
1. An automatic vehicle transmission comprising: an input shaft and an output shaft; a planetary gear train connected to the input shaft and connected to the output shaft through a CVT variable speed drive having two variable speed drive shafts and at least one pair of gear; and at least three clutches the operation of which enables selection of gear ranges R, N, D-Low, and D-High; wherein a planet carrier of the planetary gear train is non-rotatably connected to the input shaft; a sun gear of the planetary gear train is non-rotatably connected to a sun gear shaft that non-rotatably carries a sun gear shaft gear and is non-rotatably connected to a first variable speed drive shaft; a ring gear of the planetary gear train is non-rotatably connected to a ring gear shaft that is non-rotatably connected to a ring gear shaft gear that meshes with a first output shaft gear supported on the output shaft, which output shaft gear meshes with a first variable speed drive shaft gear that is non-rotatably connected to a second variable speed drive shaft; a second output shaft gear carried by the output shaft that meshes with the sun shaft gear; a third output shaft gear that is carried by the output shaft meshes with a second variable speed drive shaft gear that is carried by the second variable speed drive shaft; wherein the first output shaft gear is non-rotatably connected to the output shaft by a first clutch; the sun gear shaft is non-rotatably connected to the output shaft by a second clutch; and the third output shaft gear is non-rotatably connected to the second variable speed drive shaft by a reverse clutch.