Patent ID: 8479604
Filing Date: 2013-07-09
Classification: F16H,Y10T

Abstract:
1. A multiple-ratio power transmission for an engine-powered vehicle comprising: a mainshaft in a transmission housing connected drivably to a power output shaft; a first countershaft disposed parallel to the mainshaft and a second countershaft mounted concentrically about the first countershaft; first and second power input shafts, the first power input shaft being mounted concentrically about the second power input shaft; a headset gear assembly including: mainshaft gears in meshing engagement with countershaft gears to establish torque flow paths between the mainshaft and the power input shafts; the first headset gear being in meshing engagement with a countershaft gear for the first countershaft; the second headset gear being in meshing engagement with a countershaft gear for the second countershaft; a dual clutch assembly for alternately establishing and disestablishing a torque flow path from an engine to the first and second headset gears; first and second mainshaft bearings for end supporting the mainshaft within the housing; and a third mainshaft bearing disposed intermediate the first and second mainshaft bearings whereby the load capacity of mainshaft gears is improved.