Patent ID: 8088031

Claim:
A transmission comprising: an input member; an output member; first, second, third and fourth planetary gear sets each having a sun gear, a carrier member and a ring gear; a first interconnecting member continuously interconnecting the sun gear of the first planetary gear set with a stationary member; a second interconnecting member continuously interconnecting the carrier member of the second planetary gear set with the carrier member of the third planetary gear set; a third interconnecting member continuously interconnecting the ring gear of the second planetary gear set with the ring gear of the third planetary gear set; a fourth interconnecting member continuously interconnecting the sun gear of the third planetary gear set with the carrier member of the fourth planetary gear set; a fifth interconnecting member continuously interconnecting the ring gear of the third planetary gear set with the ring gear of the fourth planetary gear set; five torque transmitting devices each selectively engageable to interconnect at least one of the sun gears, carrier members, and ring gears of the first, second, third, and fourth planetary gear sets with at least one other of the sun gears, carrier members, ring gears of the first, second, third, fourth gear sets, and the stationary member, and wherein the torque transmitting devices 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.