Patent ID: 8424404

Claim:
An eight speed dual clutch transmission comprising, in combination, a first clutch having an input adapted to be driven by a prime mover and a first output coupled to a first drive member, a first gear, a second gear and a third gear coupled to and driven by said first drive member, a second clutch having an input adapted to be driven by said prime mover and a second output coupled to a second drive member, a fourth gear, a fifth gear and a sixth gear coupled to and driven by said second drive member, a first countershaft and a second countershaft spaced from and parallel to said first countershaft, a first pair of driven gears disposed on said first countershaft and meshing with said first and said second gears on said first drive member, a first synchronizer clutch disposed between said first pair of driven gears for selectively synchronizing and connecting one of said first pair of driven gears to said first countershaft, a second pair of driven gears disposed on said second countershaft and meshing with said first and said third gears on said first drive member, a second synchronizer clutch disposed between said second pair of driven gears for selectively synchronizing and connecting one of said second pair of driven gears to said second countershaft, a third pair of driven gears disposed on said first countershaft and meshing with said fourth and said fifth gears on said second drive member, a third synchronizer clutch disposed between said third pair of driven gears for selectively synchronizing and connecting one of said third pair of driven gears to said first countershaft, a fourth pair of driven gears disposed on said second countershaft and meshing with said fourth and said fifth gears on said second drive member, a fourth synchronizer clutch disposed between said fourth pair of driven gears for selectively synchronizing and connecting one of said fourth pair of driven gears to said second countershaft, a first additional driven gear disposed on one of said countershafts and meshing with said sixth gear, a second additional gear disposed on another of said countershafts and meshing with said first additional gear, and a fifth synchronizer clutch disposed adjacent said second additional gear for selectively synchronizing and connecting said second additional gear to said another of said countershafts.