Patent ID: 7220202

Claim:
An electrically variable transmission comprising: an input member to receive power from an engine; an output member; first and second motor/generators; first and second differential gear sets each having first, second and third members; said input member being continuously connected to said first member of said first gear set, and said output member being continuously connected to said first member of said second gear set; said first motor/generator being continuously connected to said second member of said first gear set; said second motor/generator being continuously connected with said third member of said second gear set; a first torque transfer device selectively grounding said second member of said second gear set; a second torque transfer device selectively connecting said second member of said second gear set to said first electric motor/generator; a third torque transfer device selectively grounding said third member of said first gear set; a fourth torque transfer device selectively connecting said third member of said first planetary gear set with said third member of said second planetary gear set; and a fifth torque transfer device selectively connecting said first member of said first planetary gear set with said third member of said second planetary gear set.