Multi-speed concentric twin-shaft transmission

Abstract

A transmission can include a shaft arrangement including an input shaft configured to couple to a prime mover and an output shaft coaxially aligned with the input shaft; a plurality of drive gears supported by the shaft arrangement and including a first drive gear, a second drive gear and a third drive gear; a countershaft arrangement including a first and second countershaft supporting a plurality of pinion gears intermeshed with the first, second, and third drive gears; a clutch arrangement including a first clutch assembly and a second clutch assembly operable to lock the first, second, and third drive gears to the shaft arrangement to selectively provide four gear ratios between the input and output shafts. In some examples, the first and second clutch assemblies are electromagnetically operated.

Dependencies are inferred from the claim text.