Patent ID: 7866585
Filing Date: 2011-01-11
Classification: B02C

Abstract:
1. A rotary shaft impactor, comprising: a rotor assembly connected to a rotary driving mechanism; the rotor assembly comprising a channel connecting an aggregate inlet located near a center of rotor assembly and an outlet located proximate a periphery of the rotor assembly; a replaceable tip is located near the outlet and configured to protect the outlet from a flow of aggregate; the tip is positioned at an impact angle against the flow; the replaceable tip comprises a plurality of inserts press fit into a surface of the tip; the inserts comprise geometry of a generally conical shape that protrudes beyond the surface of the tip; and each insert comprises a flat that allows the inserts to be positioned close together; the inserts are arranged adjacent one another in a row along a length of the tip and compressed together laterally along the length such that space between the flats is substantially eliminated.