Patent ID: 8858386

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, wherein the input member is continuously interconnected with at least one of the first and third members of the first and second planetary gear sets and the output member is continuously interconnected with the second member of the third planetary gear set; a first interconnecting member continuously interconnecting one of the members of the first planetary gear set with one of the members of the second planetary gear set; a second interconnecting member continuously interconnecting another one of the members of the first planetary gear set with another one of the members of the second planetary gear set; a third interconnecting member continuously interconnecting the second member of the third planetary gear set with the second member of the fourth planetary gear set; a fourth interconnecting member continuously interconnecting the third member of the third planetary gear set with the first member of the fourth planetary gear set; a fifth interconnecting member continuously interconnecting at least one member of the first and second planetary gear sets with the first member of the third planetary gear set; and six torque transmitting mechanisms, wherein three of the six torque transmitting mechanisms are each selectively engageable to interconnect the second planetary gear set to a stationary member and three of the six torque transmitting mechanisms are each selectively engageable to interconnect the fourth planetary gear set with the stationary member or the input member, and wherein the torque transmitting mechanisms are selectively engageable in combinations of at least two to establish at least nine forward speed ratios and at least one reverse speed ratio between the input member and the output member and the second planetary gear set includes a first and a second set of pinion gears.