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Vehicle space frame, castings therefor and method for remote construction - Patent 4660345 |
 | | A vehicle space frame as defined in claim 1 wherein said castings are cast by drawing molten metal into a cavity of a rigid, self supporting, gas permeable low temperature bonded, sand grain mold by a vacuum applied through said sand mold while said mold is partially submerged in said molten metal. |
 | | A vehicle space frame as defined in claim 18 wherein said casting is cast by drawing molten metal into a cavity of a rigid, self supporting, gas permeable low temperature bonded, sand grain mold by a vacuum applied through said sand mold while said mold is partially submerged in said molten metal. |
 | | A space frame as defined in claim 36 wherein said castings are cast by drawing molten metal into a cavity of a rigid, self supporting, gas permeable low temperature bonded, sand grain mold by a vacuum applied through said sand mold while said mold is partially submerged in said molten metal. |
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