Patent ID: 6748664
Filing Date: 2004-06-15
Classification: A01D

Abstract:
A gear head for a manually guided power implement, comprising:a tool shaft for receiving a rotatable cuffing tool, wherein a part of the tool shaft is embodied as a cylindrical splined shaft having grooves for the positive transmission of torque to the cutting tool; an abutment plate disposed on said tool shaft and having an abutment surface for the cuffing tool, wherein said abutment surface is disposed essentially perpendicular to a longitudinal axis of said tool shaft; and a centering cylinder that extends through a circular central opening of the cutting tool, wherein said centering cylinder is provided with inwardly directed longitudinal ribs that engage in said grooves of said splined shaft, and wherein a free end of said centering cylinder is provided with a beveled portion that extends from an outer contour of said centering cylinder into said grooves, wherein said beveled portion of said centering cylinder is in the form of a truncated cone, a smaller end faced diameter of which is less than an outer diameter of said splined shaft.