Patent ID: 8092336

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 plurality of interconnecting members each connected between at least one of the first, second, third, and fourth planetary gear sets and at least another of the first, second, third, and fourth planetary gear sets; a first torque-transmitting mechanism selectively engageable to interconnect the first member of the first planetary gear set with a stationary member; a second torque-transmitting mechanism selectively engageable to interconnect the third member of the first planetary gear set with the stationary member; a third torque-transmitting mechanism selectively engageable to interconnect the second member of the second planetary gear set with the first member of the fourth planetary gear set; a fourth torque-transmitting mechanism selectively engageable to interconnect the first member of the third planetary gear set with the first member of the fourth planetary gear set; and a fifth torque-transmitting mechanism selectively engageable to interconnect the third member of the third planetary gear set with the first member of the fourth planetary gear set, and wherein the torque transmitting mechanisms 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.