Powder feeding method and apparatus for feeding powders with a fluid with increased precision
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United States of America Patent
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Mar 17, 1998
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N/A
app pub date -
Jan 25, 1996
filing date -
Jan 26, 1995
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Abstract
A powder feeding method includes the steps of injecting a gaseous medium into a powder material held in a hopper from a porous wall forming a funnel at a bottom part of said hopper, such that the injection of the gaseous medium is carried out intermittently.
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