Patent ID: 8075437

Claim:
A transmission for use in a vehicle powertrain including a drive unit configured to provide rotational power and a torque transferring apparatus interposed between the transmission and the drive unit, the transmission comprising a main shaft having an input end, an output end spaced from the input end, and a plurality of main shaft gears positioned between the input end and the output end for common rotation with the main shaft, the input end of the main shaft being configured to receive torque output from the torque transferring apparatus, a first countershaft spaced from and substantially parallel to the main shaft, a second countershaft spaced from and substantially parallel to the main shaft, a plurality of countershaft gears, and an output gear set comprising a first output gear concentric with and rotatable about the output end of the main shaft and at least one second output gear coupled for common rotation with one of the first countershaft and the second countershaft and meshing with the first output gear, the first and second output gears being configured to multiply torque received from one of the first countershaft and the second countershaft at the output end of the main shaft, wherein the plurality of countershaft gears includes a first countershaft gear, a second countershaft gear, a third countershaft gear, and a fourth countershaft gear, the plurality of main shaft gears includes a first main shaft gear, a second main shaft gear, a third main shaft gear, and a fourth main shaft gear, and the first and the second countershaft gears directly mesh with the first and the second main shaft gears and the third and the fourth countershaft gears directly mesh with the third and the fourth main shaft gears.