Thermally treating articles with particulate material and apparatus therefor
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United States of America Patent
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Jun 1, 1982
Grant Date -
N/A
app pub date -
Oct 20, 1980
filing date -
Oct 23, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention provides a method and apparatus for treating articles with particulate material, for example for thermally toughening glass sheets. The particulate material consists of or contains permanently magnetized particles and is subjected to an electromagnetic field which travels linearly through the treatment space and is effective to sustain a dispersion of the particulate material in the treatment space. The article is contacted with that dispersion.
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