Sealed reactant gas inlet for a CVI/CVD furnace
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United States of America Patent
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Dec 19, 2000
Grant Date -
N/A
app pub date -
Oct 28, 1998
filing date -
Oct 28, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
The invention is relates to CVI/CVD furnace apparatus. More specifically, the invention is directed to a sealed gas inlet for a high temperature CVI/CVD furnace. A method and apparatus are provided for preventing gas leakage around a gas inlet extending through a hole in a susceptor floor in a CVI/CVD furnace. According to the invention, the gas inlet is sealed to the susceptor floor with sufficient intimacy to block leakage of gas through the hole around the gas inlet while allowing the gas inlet to cyclically translate through the hole due to thermal expansion and contraction induced by thermal cycles in the CVI/CVD furnace.
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