Patent ID: 8795129
Filing Date: 2014-08-05
Classification: F16H

Abstract:
1. A transmission, comprising: an input; an output; epicyclic gearing including first, second, third and fourth gearsets, each gearset including a plurality of members, wherein the members include a sun gear, a ring gear, a carrier, and planet pinions supported on the respective carrier and meshing with the respective sun gear and respective ring gear; clutches, each clutch selectively opening and closing a drive connection between members of the gearsets; the input secured to the third carrier, the first carrier and second sun gear fixed against rotation, the second carrier and the third ring being mutually secured, the third and fourth sun gears being mutually secured, the output being secured to the fourth carrier; and the clutches include a first clutch selectively connecting the second ring gear to the third and fourth sun gears, a second clutch selectively connecting the third carrier to the second ring gear, a fourth clutch selectively connecting two members of the fourth gearset to each other, and a fifth clutch selectively connecting the fourth carrier to the second carrier.