Resistance analytical furnace
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United States of America Patent
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Nov 7, 2017
Issued Date -
Dec 19, 2013
app pub date -
Jun 18, 2013
filing date -
Jun 19, 2012
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Abstract
A resistance furnace provides an improved upper and lower electrode construction with significantly increased coolant flow. The lower electrode has a tip design that significantly lowers the electrode tip temperature during an analysis. The upper and lower electrodes also cooperate with an improved crucible design to significantly reduce the power required to fuse a specimen contained in the crucible. The furnace uniformly heats the floor and lower side walls of a crucible, which lowers the power requirement for specimen fusion and provides higher structural benefits to provide consistent analysis and manufacturing yields. The crucible has a cylindrical body and pedestal base with an annular smoothly curved concave indentation therebetween.
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