Patent ID: 8381618

Claim:
A gearing for driving an extruder having a process section with a plurality of axially parallel shafts disposed along a circle at equal central-angle intervals and nonrotatably connected to processing elements with which adjacent shafts intermesh, the gearing having output shafts which are nonrotatably connected coaxially to the shafts of the process section, each output shaft having an output pinion, adjacent output shafts having, through axial offset of their output pinions, a different length between the end facing the process section and the output pinion, the output pinions offset toward the process section or away therefrom being in engagement with one sun gear in each case, and each sun gear being connected to a drive shaft, characterized in that the drive shaft with the sun gear offset away from the process section is formed by a hollow torque shaft, and the drive shaft with the sun gear offset toward the process section by a coaxial inner torque shaft disposed within the hollow torque shaft, the hollow torque shaft and the inner torque shaft being configured such that the difference in torsional rotation angle caused by the different length of the output shafts is compensated by a different torsion of the hollow torque shaft and the inner torque shaft.