Liquefier assembly for additive manufacturing systems, and methods of use thereof
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United States of America Patent
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May 3, 2016
Grant Date -
Apr 9, 2015
app pub date -
Oct 4, 2013
filing date -
Oct 4, 2013
priority date (Note) -
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Abstract
A liquefier assembly for use in an additive manufacturing system, which includes a rigid member having a gap, a liquefier tube operably disposed in the gap, one or more heater assemblies disposed in the gap in contact with the liquefier tube, and configured to heat the liquefier tube in a zone-by-zone manner, preferably one or more thermal resistors disposed in the gap between the rigid member and the heater assemblies, and preferably one or more sensors configured to operably measure pressure within the liquefier tube. The one or more heater assemblies may be operated to provide dynamic heat flow control.
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