Patent ID: 7703714

Claim:
A coarse material comminution machine comprising: a rotor having a plurality of blades; a stator body located on a stator side of the rotor, said stator having at least one adjustable blade; said blade adjustable by a control device in a direction towards the rotor and in a direction away from the rotor; the control device having a adjusting slide movable relative to the rotor; an activating device to move the adjusting slide on a moving surface either in the direction to the rotor or in the direction away from the rotor; and the blade being kinetically coupled to a movement of the adjusting slide and the blade being connected to the adjusting slide by at least one coupling member connectible to the adjusting slide and the blade in form-fitting and detachable fashion; wherein one coupling member further comprises two coupling projections located at a distance from each other and connected by a bar and the adjusting slide and the blade each have a recess corresponding to the coupling projections for the attachment of a coupling member.