Thermal Growth Compensating Extrusion Screw Assembly
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United States of America Patent
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Issued Date -
Oct 15, 2009
app pub date -
Apr 10, 2008
filing date -
Apr 10, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An improved extrusion assembly is disclosed which better adapts to thermal changes resultant from the transport of high-temperature extrudate. An extrusion screw present in the assembly includes a hollow portion. A biasing member is disposed in the hollow portion. When the assembly is transporting high-temperature extrudate, the biasing member's included Belleville washer component compensates for the thermal expansion and contraction of the extrusion screw.
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