Patent ID: 7481730

Claim:
A multiple input, dual output, electric motor transmission device, comprising: a ring gear; a ring gear motor for driving the ring gear; a first planetary gear set engaging the ring gear for geared rotation with respect to the ring gear; a first sun gear engaging the first planetary gear set for geared rotation with respect to the first planetary gear set; a first output shaft; a first electric motor; a second planetary gear set engaging the ring gear for geared rotation with respect to the ring gear; a second sun gear engaging the first planetary gear set for geared rotation with respect to the first planetary gear set; a second output shaft; a second electric motor; wherein the first output shaft is coupled to a first one of the first planetary gear set and the first sun gear, a rotor of the first electric motor is coupled to a second one of the first planetary gear set and the first sun gear, the second output shaft is coupled to a first one of the second planetary gear set and the second sun gear, and a rotor of the second electric motor is coupled to a second one of the second planetary gear set and the second sun gear.