Patent ID: 6447378
Filing Date: 2002-09-10
Classification: B24C

Abstract:
A blast wheel assembly comprising an abrasive throwing wheel and a plurality of throwing blades evenly spaced axially on said wheel;wherein said wheel comprises a substantially right cylindrical cross-section having a lateral surface defining a circumferential outer face of said wheel, a central opening, and a plurality of channels therein for receipt of said throwing blades, said channels extending from the lateral surface with a diminishing cross-section toward said central opening; an opening in the lateral surface of said wheel for insertion of a fastner; wherein each of said blades comprises an inner end, an outer end, a surface for throwing abrasive, and a bottom surface substantially perpendicular to said surface for throwing abrasive and diminishing in cross-section from said outer end to said inner end; a lug disposed proximate said outer end and between said outer end and said inner end of said blade; wherein said lug has an opening therein adapted to align with said opening in the lateral surface of said wheel when said blade is inserted in one of said channels in said wheel; and wherein each channel and the bottom of each blade are of complementary dove tail shape so that said channel slidably receives said blade and engages said blade to securely position said blade in said channel.