Patent ID: 7896770

Claim:
A transmission comprising: an input member; an output member; a first gearing arrangement including a first gear set, a second gear set, and a first countershaft, wherein the first gear set and the second gear set are selectively connectable to the first countershaft; a second gearing arrangement including the second gear set, a third gear set, a fourth gear set, and a second countershaft, wherein the second gear set, the third gear set, and the fourth gear set are selectively connectable to the second countershaft; a planetary gear set having a first member, a second member, and a third member; a first interconnecting member continuously interconnected to the input member; a second interconnecting member continuously interconnected to the first, second, third, and fourth gear sets; a third interconnecting member continuously interconnected to the third member of the planetary gear set; a dual clutch assembly selectively engageable to interconnect the input member with one of the first countershaft and the second countershaft; three synchronizers for selectively coupling one of the first, second, third, and fourth gear sets with one of the first and second countershafts; three torque-transmitting devices each selectively engageable to interconnect one of the first, second, and third interconnecting members with another of the first, second, and third interconnecting members or with a stationary member; and wherein the torque-transmitting mechanisms and synchronizers 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.