Differential Draw Transmission (MDD) with
Integral Phase Shifting Differential

The Differential Draw Transmission (MDD) with Integral Phase Shifting Differential accomplishes Primary Speed Control and Secondary Position Control. When the Speed Control screw of the unit is set to any position within its range the ratio between the input and output shafts are fixed or preset. The Secondary Position Control is accomplished by rotating the correction shaft which accesses the correction differential. This can accomplish an incremental correction which offsets the phase angle or controls position between the input an output shafts.