Patent ID: 8317648

Claim:
A transmission comprising: an input member; an output member; a stationary member; a planetary gear set having a first sun gear member, a second sun gear member, a carrier member, a first set of pinion gears, a second set of pinion gears, and a ring gear member; wherein the carrier member supports the first set of pinion gears and the second set of pinion gears for rotation relative to the carrier member and relative to one another; wherein the first set of pinion gears meshes with the first sun gear member and with the ring gear member; wherein the second set of pinion gears meshes with the second sun gear member and with the first set of pinion gears; wherein the input member is connected for rotation with the ring gear member; wherein the output member is connected for rotation with the first sun gear member; a first electric motor/generator having a first rotor connected for rotation with the carrier member; a second electric motor/generator having a second rotor connected for rotation with the second sun gear member; and a first torque-transmitting mechanism selectively engageable to ground the input member to the stationary member.