Patent ID: 7878939

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 interconnecting member continuously interconnecting the first member of the first planetary gear set with a stationary element; a second interconnecting member continuously interconnecting the first member of the second planetary gear set with the first member of the third planetary gear set; a third interconnecting member continuously interconnecting the second member of the second planetary gear set with the third member of the third planetary gear set; a fourth interconnecting member continuously interconnecting the third member of the second planetary gear set with the first member of the fourth planetary gear set; a fifth interconnecting member continuously interconnecting the second member of the third planetary gear set with the third member of the fourth planetary gear set; and five torque-transmitting mechanisms, wherein each of the five torque-transmitting mechanisms selectively interconnects a respective one of the members of the planetary gear sets with another respective one of the members of the planetary gear sets or with the 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.