Patent ID: 7249404
Filing Date: 2007-07-31
Classification: B02C,Y10T

Abstract:
1. A method of manufacturing hammermills with tubular rotor shaft assemblies of the same rotor diameter comprising: mounting two flange plates on stub shafts and concentric with the axis of rotation of the stub shafts; mounting a head disk on each flange plate, concentric with the axis of rotation of the stub shafts; placing at least one circular spacer ring between the flange plates and concentric with the axis of rotation of the stub shafts; keying the junction between adjacent spacer rings; attaching at least one intermediate disk in the keyed junction between the spacer rings concentric with the axis of rotation of the stub shafts; connecting the two flange plates with at least one tie rod and tie rod nut; increasing the compression on the at least one tie rod; and adding spacer rings and intermediate disks to increase the length of the tubular rotor shaft.