Patent ID: 7425184
Filing Date: 2008-09-16
Classification: F16H

Abstract:
1. A modular multistage transmission, comprising: a gearbox input and a gearbox output; first and second superimposed gears designed as three-shaft planetary wheels each comprising a sun wheel, a hollow wheel, a spacer and planetary wheels, whereby individual shafts are formed by the sun wheels, hollow wheels, spacers or elements connected with them in a torque-transmitting manner; a first shaft of the first superimposed gear connected in a torque-transmitting manner with the gearbox input; a second shaft of the first superimposed gear and a second shaft of the second superimposed gear connected at least indirectly with the gearbox output; a continuously variable transmission in the form of a traction mechanism box arranged between third shafts of the first and second superimposed gears; means for controlling the gear transmission ratio at the traction mechanism box; couplings between individual of the superimposed gears and the continuously variable transmission taking place through a linking gear comprising a transmission stage; the first shaft of the second superimposed gear being connected selectively with the gearbox input via a first clutch coupling; the second shaft of the first superimposed gear and the third shaft of the second superimposed gear being connected selectively with the gearbox output via at least one other second clutch coupling.