Patent ID: 8043141
Filing Date: 2011-10-25
Classification: B24C

Abstract:
1. In an apparatus for throwing an abrasive material, said apparatus comprising a rotatable wheel and a plurality of throwing blades removably positionable on a forward face of said rotatable wheel, said rotatable wheel having an axis of rotation and each of said throwing blades having a holding structure projecting therefrom, the improvement comprising: said forward face including a recess surrounded by a forward peripheral portion of said forward face such that at least a portion of said recess is bounded circumferentially by an axially extending interior wall of said forward peripheral portion; a blade retainer groove provided in said recess of said forward face proximate a rearward end of said interior wall for removably receiving a blade retainer; a plurality of slots extending through said interior wall and outwardly into said forward peripheral portion away from said recess for removably receiving said holding structures of said throwing blades; and said forward peripheral portion comprising a forward peripheral face surface which extends outwardly away from said recess at a rearward angle effective to allow said holding structures of said throwing blades to be delivered into and removed from said slots without interference from said blade retainer groove.