Method and apparatus for eliminating static electricity
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United States of America Patent
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Mar 10, 1992
Grant Date -
N/A
app pub date -
Dec 4, 1989
filing date -
Dec 6, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention is characterized by applying high positive and negative DC voltages supplied from a converter to positive and negative discharge needles (or electrodes) arranged independent of the other in two air passages to generate positive and negative corona ions in the two air passages, by supplying air, whose flow rates and pressures in the two air passages have been adjusted, into the air passages through air hoses connected to rear ends of the air passages, and by jetting the positive and negative ions, keeping them balanced, together with air to a charged body separated a little through nozzles attached to front ends of the air passages to eliminate static electricity from the charged body. The present invention is further characterized by method and apparatus capable of achieving the above-mentioned process and having an electrodes arrangement in which an extremely fine metal line made of tungsten, for example, and having a diameter of 20-60 .mu.m is used as the corona electrodes to hold flows of the positive and negative ions balanced for a long time.
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