Patent ID: 7846055

Claim:
A transmission comprising: an input member; an output member; a first gearing arrangement including a first gear set, a second gear set, a third gear set, a fourth gear set, and a first countershaft, wherein the first gear set, the second gear set, the third gear set, and the fourth gear set are selectively connectable to the first countershaft, and wherein the input member is continuously interconnected with the first gear set and the second gear set; a second gearing arrangement including the first gear set, the second gear set, the fourth gear set, a fifth gear set, and a second countershaft, wherein the first gear set, the second gear set, the fourth gear set, and the fifth 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 third, fourth, and fifth gear sets and to the first member of the planetary gear set; a second interconnecting member continuously interconnected to the third member of the planetary gear set; a clutch assembly selectively engageable to interconnect one of the first gear set and the second gear set with one of the first countershaft and the second countershaft; two synchronizers each for selectively coupling at least one of the third, fourth, and fifth gear sets with one of the first and second countershafts; three torque-transmitting devices each selectively engageable to interconnect at least one of the input member, first interconnecting member, and second interconnecting member with at least another of the input member, first interconnecting member, second interconnecting member, and a stationary element; and wherein the torque-transmitting devices and synchronizers are selectively engageable in combinations of at least three to establish at least thirteen forward speed ratios and at least four reverse speed ratios between the input member and the output member.