Patent ID: 8403805

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 mechanism selectively engageable to interconnect at least one of the second member of the second planetary gear set and the first member of the first planetary gear set with the third member of the fourth planetary gear set; a second torque transmitting mechanism selectively engageable to interconnect the third member of the second planetary gear set with the second member of the fourth planetary gear set; a third torque transmitting mechanism selectively engageable to interconnect at least one of the first member of the third planetary gear set and the first member of the fourth planetary gear set with the third member of the fourth planetary gear set; a fourth torque transmitting mechanism selectively engageable to interconnect at least one of the second member of the third planetary gear set and the output member with the third member of the fourth planetary gear set; and a fifth torque transmitting mechanism selectively engageable to interconnect the second member of the fourth planetary gear set with a stationary member, and wherein the torque transmitting mechanisms are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member.