Patent ID: 7367910

Claim:
An electro-mechanical transmission comprising: an input member to receive power from a power source; an output member; first and second motor/generators; a first differential gear set having first, second and third members; said input member being continuously operatively connected to said first member of said first differential gear set; said first motor/generator being continuously operatively connected to said second member of said first differential gear set to establish an input-split power flow; said third member of said first differential gear set being continuously operatively connected to said second motor/generator and to said output member such that said transmission is characterized by a single mode providing a continuously variable range of speed ratios; a first torque-transmitting mechanism operatively connected to said second member of said first differential gear set and selectively engageable to connect said second member of said first differential gear set with a stationary member, thereby establishing a first fixed speed ratio between said input member and said output member a first interconnecting member; a first interconnecting member; and a set of intermeshing gears including a first and a second intermeshing gear, said first intermeshing gear being continuously interconnected with said first motor/generator for common rotation therewith, said second intermeshing gear being continuously operatively connected with said second member of said first planetary gear set via said first interconnecting member and continuously intermeshing with said first intermeshing gear.