Patent ID: 7270166
Filing Date: 2007-09-18
Classification: B22C,B29C

Abstract:
1. A method of making a fugitive pattern assembly, comprising forming a plurality of fugitive patterns of an article to be cast in a single crystal casting mold formed on the pattern assembly wherein each pattern comprises a first end and an opposite second end and a first side and an opposite second side between the first end and the opposite second end, preforming a separate fugitive member adapted to be incorporated in the single crystal casting mold formed on the pattern assembly, placing the patterns in an injection die with at least two fugitive patterns placed in pattern-receiving cavities of the injection die in end-to-end relation wherein the first end of one of the two patterns is adjacent the second end of the other one of the two patterns in a common first die gating cavity and placing the fugitive member in another cavity of the injection die with a second die gating cavity between said fugitive member and one of the fugitive patterns, and injecting fluid gating material into the die to form in-situ gating in said first diegating cavity connected to said at least two fugitive patterns and in said second die gating cavity connected to said fugitive member and said one of the fugitive patterns.