Patent ID: 6591893
Filing Date: 2003-07-15
Classification: B22C,B22D

Abstract:
A mold assembly for casting a fishing sinker that expands upon solidification comprising:a mold block having a converging sidewall therein; a first mold part, said first mold part having a first face having a portion of a mold cavity therein and a second face for engaging a portion of the converging sidewall of the mold block; a second mold part, said second mold part having a first face having a further portion of a mold cavity therein and a second face for engaging an opposite portion of the converging sidewall of the mold block, said first mold part and.said second mold part positionable in a condition to create a mold cavity of a first volume; and a member, said member located in an axial condition with respect to said first mold part and said second mold part to thereby generate a force to direct said first mold part and said second mold part in a direction outwardly of said mold block thereby causing said first mold part and said second mold part to laterally separate to increase the volume of the mold cavity therein and to free at least one of the mold parts from an interference fit with a solidified cast article to enable one to free the cast article from the remaining mold part without fracture of the cast article.