Patent ID: 6343642
Filing Date: 2002-02-05
Classification: B22C,B22D

Abstract:
A riser sleeve for use with a casting mold, the casting mold being used to form a main casting, said riser sleeve comprising:a riser sleeve body having a side wall; and an evaporative pattern fitted into said riser sleeve body so as to pass through said side wall of said riser sleeve body and projecting from said side wall outside of said riser sleeve body; wherein said evaporative pattern is shaped and located on said riser sleeve body such that when a melt is poured into the casting mold using said riser sleeve body and having said evaporative pattern, the melt dissipates said evaporative pattern and casts a projecting portion corresponding to said evaporative pattern integrally with a riser cast by said riser sleeve body, the projecting portion being capable of receiving a wedge blade of an openable wedge blade type riser breaker for breaking the riser off of the main casting by an opening force being applied to a pair of wedge blades of the riser breaker.