Patent ID: 6994148
Filing Date: 2006-02-07
Classification: B22D,F27B,F27D

Abstract:
1. A casting machine furnace apparatus comprising: a furnace adapted to receive molten metal, said furnace including an outer wall structure; a cover adapted to seal the furnace; a source of fluid, said fluid being supplied into said furnace for applying fluid pressure on said molten metal; and a casting apparatus in fluid communication with said molten metal such that application of said fluid pressure on said molten metal causes said molten metal to supply said casting apparatus; wherein said outer wall structure of said furnace is provided with a plurality of exhaust ports said exhaust ports being provided in said outer wall structure at predetermined locations and selectively controllable between a first closed position, wherein said exhaust ports do not allow air to be exhausted from said furnace, and a second opened position, wherein said exhaust ports enable air to be exhausted from said furnace; and wherein said outer wall structure of said furnace is provided with a plurality of air pockets, wherein a respective one of said plurality of air pockets is located directly adjacent a respective one of said exhaust ports so as to provide a fluid path from an interior chamber of said furnace, to said plurality of air pockets, and to said plurality of exhaust ports.