Patent ID: 8758183

Claim:
A transmission comprising: a first gear set having: a first sun gear member rotatable about a first axis of rotation; wherein the first sun gear member has a radially outward-facing surface defining outer teeth; a second sun gear member rotatable about the first axis of rotation; wherein the second sun gear member has a radially outward-facing surface defining outer teeth; a carrier member; a ring gear member radially outward of and concentric with the first sun gear member and the second sun gear member and rotatable about the first axis of rotation; wherein the ring gear member has a radially inward-facing surface defining inner teeth; a first annular gear supported by the carrier member and having a radially inward-facing surface defining inner teeth and a radially outward-facing surface defining outer teeth; wherein the first annular gear is rotatable about a second axis of rotation that rotates about the first axis of rotation; wherein the inner teeth of the first annular gear mesh with the outer teeth of the first sun gear member; a second annular gear supported by the carrier member and having a radially inward-facing surface defining inner teeth and a radially outward-facing surface defining outer teeth; wherein the second annular gear is rotatable about a third axis of rotation that rotates about the first axis of rotation; and wherein the inner teeth of the second annular gear mesh with the outer teeth of the first annular gear and with the outer teeth of the second sun gear member, and the outer teeth of the second annular gear mesh with the inner teeth of the ring gear member.