Patent ID: 9205486
Filing Date: 2015-12-08
Classification: B22D

Abstract:
1. An apparatus comprising: a molding device having a plurality of molding portions that form a cavity that defines walls of an article to be molded using a metal alloy and having a feature of a different thickness than the wall with a protrusion opposite the feature, the size and shape of the protrusion based at least in part on the thermal expansion of the metal alloy to counteract the shrinkage of the article; an injection device configured to output the metal alloy under pressure; and an injection distribution device that physically couples the injection device to the molding device using a runner that is configured to receive the output of the metal alloy from the injection device and the plurality of sub-runners that are configured to receive an output of the runner and provide that output to the molding device, the plurality of sub-runners having an overall cross section that at least approximates a cross section of the runner.