Apparatus for creating a free-form metal three-dimensional article using a layer-by-layer deposition of a molten metal in an evacuation chamber with inert environment
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United States of America Patent
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Aug 4, 1998
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N/A
app pub date -
Sep 8, 1995
filing date -
Sep 8, 1995
priority date (Note) -
Expired
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Abstract
An apparatus for the accurate formation of a free-form three-dimensional article comprises providing a supply of substantially uniform size metal droplets of a desired material wherein each droplet has a positive or negative charge in an enclosed environment. The supply of droplets is focused or aligned into a narrow stream by passing the droplets through or adjacent an alignment mechanism which repels each droplet toward an axis extending through the alignment mechanism. The droplets are deposited in a predetermined pattern at a predetermined rate onto a target to form the three-dimensional article without the use of a mold of the shape of the three-dimensional article.
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