Patent ID: 8371983

Claim:
Hybrid transmission configured to transfer mechanical power to an output member, comprising: an input member and an output member; a transmission case circumscribing first and second differential gear sets, each differential gear set comprising a plurality of meshingly engaged rotatable elements; the first differential gear set configured with four nodes for transferring mechanical power; the second differential gear set configured with three nodes for transferring mechanical power; two of the four nodes of the first differential gear set continuously interconnected to two of the three nodes of the second differential gear set; and a first torque transfer clutch configured to selectively connect the input member to an internal combustion engine; first and second brake devices configured to selectively interconnect elements of the first and second differential gear sets, the transmission case, the input member, and the output member; wherein a second one of the four nodes of the first differential gear set comprises a connecting point to continuously interconnect a second one of the elements of the first differential gear set to a first one of the elements of the second differential gear set; and wherein the second one of the four nodes of the first differential gear set comprises a connecting point to selectively ground rotation of the second one of the elements of the first differential gear set to the transmission case by applying the first brake.