Patent ID: 7357747
Filing Date: 2008-04-15
Classification: B62D,Y10T

Abstract:
1. An apparatus for differential rotational power distribution from a power source, comprising: an input shaft connected to the power source to receive rotational power therefrom; a pair of output shafts; a pair of planetary gear sets, each including a corresponding sun gear, ring gear and planet carrier supporting a plurality of planet gears, wherein the sun gear of each of said planetary gear sets is coupled to said input shaft to receive power therefrom and rotationally drives the corresponding plurality of planet gears, and further wherein the planet carrier of each of said planetary gear sets is rotated by rotation of the corresponding planet gears and is coupled to a corresponding one of said pair of output shafts to transmit rotational power thereto; a motor; and an input gear driven by said motor and coupled to the ring gear of each of said planetary gear sets to drive the ring gears so that the ring gear rotation in one of said pair of planetary gear sets increases the rotational speed of the corresponding planet carrier and the ring gear rotation in the other of said pair of planetary gear sets decreases the rotational speed of the corresponding other planet carrier.