Patent ID: 8393989

Claim:
An electric traction drive having a longitudinal axis, the drive comprising: a plurality of traction planets distributed radially about the longitudinal axis, each traction planet configured to rotate about a tiltable axis; a first traction ring in contact with each of the traction planets; a traction sun rotatable about the longitudinal axis and positioned radially inward of and in contact with each of the traction planets, the traction sun capable of transferring power; a second traction ring in contact with each of the traction planets; and an electricity producing generator comprising: a plurality of non-rotating field windings coupled to a non-rotating component of the drive; a plurality of rotating permanent magnets coupled to a rotating component of the drive; a ratio control device operably coupled to the traction sun; and a carrier operably coupled to each of the traction planets, the carrier operably coupled to the ratio control device.