Filament loading system in an extrusion apparatus
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United States of America Patent
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Aug 2, 2005
Grant Date -
Jul 1, 2004
app pub date -
Dec 15, 2003
filing date -
Jun 23, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus which extrudes flowable material from a liquifier includes a system for loading filament supplied in a cassette. The cassette is loaded into a loading bay of the apparatus. A strand of filament from the cassette is engaged and advanced along a path to the liquifier using a drive wheel or roller pair. A conduit having an entrance in the loading bay guides the filament as it is advanced. The filament loading system of the present invention provides a convenient manner of loading and unloading filament in a three-dimensional modeling machine, and can be implemented in a manner that protects the filament from environmental moisture.
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