US Patent 7140461 Power splitting vehicle drive system

A vehicle includes a prime mover, a first output shaft, a second output shaft and a planetary gear assembly. The planetary gear assembly includes a sun gear, a ring gear and a plurality of planetary gears supported between the ring gear and the sun gear by a carrier. One of the sun gear and the ring gear is coupled to the prime mover. The other of the ring gear and the sun gear is coupled to the first output shaft. The first carrier is coupled to the second output shaft.