Patent ID: 7870804
Filing Date: 2011-01-18
Classification: F16H,Y10T

Abstract:
1. A transmission comprising: an input member; an output member; an idler shaft; a first, second, third, fourth, fifth, sixth, and seventh gear set each having at least a first gear and a second gear, wherein the output member is continuously connected with one of the gear sets, wherein the first gear set includes a third gear continuously connected to the idler shaft and intermeshed with the first gear of the first gear set, and wherein the third gear set includes a third gear and the first gear of the third gear set is intermeshed with the third gear and the second gear of the third gear set; a first interconnecting member continuously connected to the fourth, fifth, and sixth gear sets; a second interconnecting member continuously connected with the first and third gear sets; a first countershaft continuously connected to the seventh gear set; a second countershaft continuously connected to the seventh gear set; a dual clutch assembly selectively engageable to interconnect the input member with one of the first interconnecting member and the second interconnecting member; and four synchronizer assemblies each for selectively coupling one of the first, second, third, fourth, fifth, and sixth gear sets with one of the first and second countershafts, wherein the dual clutch assembly and four synchronizer assemblies are selectively engageable in combinations of at least two to establish at least seven forward speed ratios and at least one reverse speed ratio between the input member and the output member.