Lost modeling-compound casting pattern and method of preparing it
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United States of America Patent
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Jan 11, 1994
Grant Date -
N/A
app pub date -
Aug 7, 1992
filing date -
Oct 12, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The shape-dictating surfaces of the pattern are constituted by a thin self-supporting shell (4 & 5) of photocured polymer. The shell is produced by a laser controlled by a computer with reference to a design drawing. The inside of the shell is packed full of low melting-point modeling compound. The areas (6 & 7) of the pattern that do not dictate shape are demarcated by the low melting-point modeling compound.
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