Patent ID: 8826758
Filing Date: 2014-09-09
Classification: F16H,Y10T

Abstract:
1. A transmission comprising: a transmission housing; a first, second, third, fourth, fifth and sixth gear sets, wherein each of the gear sets include a first gear in mesh with a second gear and wherein the first gear set further includes a third gear in mesh with the second gear; a transmission input shaft member rotatably supported in the transmission housing and wherein the first gears of the first, third and fifth gear sets are rotatably fixed for common rotation with the transmission input shaft member and wherein the first gears of the second, fourth and sixth gear sets are selectively connectable for common rotation with the transmission input shaft member; a first countershaft rotatably supported within the transmission housing and spaced apart from and parallel with the transmission input shaft member, wherein each of the second gears of the second, fourth and sixth gear sets are rotatably fixed for common rotation with the countershaft and wherein the second gears of the first, third and fifth gear sets are selectively connectable for common rotation with the first countershaft; a second countershaft rotatably supported within the transmission housing and spaced apart from and parallel with the transmission input shaft member, wherein the third gear of the first gear set is selectively connectable for common rotation with the second countershaft; and seven synchronizer assemblies each for selectively coupling at least one of the gears of the first, second, third, fourth, fifth and sixth gear sets with at least one of the transmission input shaft member, the first countershaft and the second countershaft, and wherein the selective engagement of at least one of the seven synchronizer assemblies establishes at least one of six forward speed ratios and at least one reverse speed ratio.