Patent ID: 7438117
Filing Date: 2008-10-21
Classification: B22C,B22D

Abstract:
1. A vent window core comprising: a main body adapted to be assembled with one of a crankcase chill and an integral barrel crankcase core of a mold package, said main body having a substantially planar lower surface; a shoulder extending laterally outwardly from a side of said main body and at an angle with respect to the lower surface of the main body, a cross-sectional shape of said shoulder determining a final shape of a vent window formed in a bulkhead of an engine cylinder block, and wherein said shoulder has a length which is substantially equal to a desired depth of the window; and a recess formed in an outer surface of said main body adjacent said shoulder, said recess formed by a semicircular upper wall and a substantially planar side wall and adapted to receive an extension of the crankcase chill therein when assembled in the mold package.