Patent ID: 8007400

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 third member of the first planetary gear set with a stationary member; a second interconnecting member continuously interconnecting the first member of the second planetary gear set with the stationary member; a third interconnecting member continuously interconnecting the third member of the second planetary gear set with the first member of the third planetary gear set; a fourth interconnecting member continuously interconnecting the third member of the third planetary gear set with a third member of the fourth planetary gear set; and five torque-transmitting mechanisms each selectively engageable to interconnect at least one of the first, second, and third members of the first, second, third, and fourth planetary gear sets with at least one other of the first, second, and third members of the first, second, third, and fourth planetary gear sets; 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.