Patent ID: 9302419
Filing Date: 2016-04-05
CPC Classification: B29B,B29C,F16H,Y10T

Claim Text:
1. Extruder comprising an operative unit composed of a cylinder and at least two screw shafts which are rotatably accommodated therein, a gear unit having at least two output shafts, wherein each output shaft, via a connecting element, is connected in a rotationally fixed manner to one screw shaft, a motor which drives the gear unit and is coupled to the gear unit via a clutch, and a controller installation, wherein each connecting element or each output shaft is assigned a separate measuring installation for determining an applied torque, wherein the measuring installations communicate with the controller installation which, depending on the individual determined torques, controls the clutch which is implemented as a switchable clutch wherein the controller installation is configured for opening the clutch both when one of the applied torques exceeds a torque limit value and also when the difference between the two applied torques exceeds a limit value.