Extrusion apparatus for three-dimensional modeling
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United States of America Patent
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Jun 15, 2004
Grant Date -
N/A
app pub date -
Apr 30, 2001
filing date -
Apr 30, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed is a multi-tip extrusion apparatus and design methodology whereby a single extrusion head having approximately co-planar, fixed-position dispensing tips is used in a three-dimensional modeling machine to deposit multiple types of materials from distinct material supply sources. The tips are spaced apart a distance great enough so that a road of material extruded by a leading one of the tips will cool and shrink from the plane of the tips so that it is not smeared by contact with a trailing one of the tips.
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