Modular gating system for foundries

Abstract

The present invention of a gating system comprises the use of modular gating system consisting of one or more filtering media flanked on at least one side by an evaporative foam layer, which is left inside the mold. The modular gating system permits the entry of metal to any surface of the mold without going through the parting line of the pattern.

1 . I claim a modular gating system which contains a filtering media flank on one side or both sides by an evaporative foam pattern.  
     
     
         2 . I claim a means of anchoring a filtering media in the sand by providing a ledge defined by the sand and the outside shape of the evaporative foam pattern.  
     
     
         3 . I claim a means of risering the casting by placing the above-described modular gating system on top of the portion of the casting that needs feeding.  
     
     
         4 . I claim a means of filtration of metal using two or more filters placed in series each separated by an evaporative foam pattern and used in conjunction with the above described modular gating system.