Toothed speed-changing gearing with two parallel transmission paths

摘要

The gearbox has an input shaft (10) and an output shaft (20) coupled to one another via at least 2 parallel drive trains (22,24), each having a switched clutch (K1,K2) for connecting an intermediate shaft (12,14) to the input shaft and coupled to at least one head gear (C1) for driving the output shaft.