Patent ID: 8123648

Claim:
A transmission comprising: an input member; an output member; first, second, third and fourth planetary gear sets each having first, second and third members; a first torque transmitting device selectively engageable to interconnect the second member of the third planetary gear set and the input member with the second member of the fourth planetary gear set; a second torque transmitting device selectively engageable to interconnect the third member of the third planetary gear set with the second member of the fourth planetary gear set; a third torque transmitting device selectively engageable to interconnect the first member of the fourth planetary gear set with the second member of the first planetary gear set and a stationary member; a fourth torque transmitting device selectively engageable to interconnect the third member of the third planetary gear with the second member of the second planetary gear set and the output member; and a fifth torque transmitting device selectively engageable to interconnect the first member of the fourth planetary gear set with the first member of the second planetary gear set, and wherein the torque transmitting devices are selectively engageable in combinations of at least three to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member.