Patent ID: 8071225

Claim:
An industrial die, core pin and cast component wherein said component comprises: a first side; a second side, said second side having a second side surface; an aperture opening at said second side and through said second side surface; said aperture having a respective first arcuate surface bounding a central portion of the aperture; said aperture having a respective second surface bounding a projecting portion of the aperture, said projecting portion having a closed end and an open end, said open end forming a gap in said first arcuate surface, said projecting portion closed end extending radially beyond said first arcuate surface; wherein said first accurate surface is constructed to be engaged by a fastener; wherein said component is a blower housing body; wherein said gap traverses an arc length less than the arc length of any continuous portion of said first arcuate surface adjacent said gap; and wherein said aperture has said core pin therein, said core pin has an amount of appendage in said projection and said core pin extends from said die.