Electrostatic spray device
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United States of America Patent
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-
Jan 27, 2004
Grant Date -
Sep 13, 2001
app pub date -
Jan 12, 2001
filing date -
Aug 18, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention is an electrostatic spraying device to electrostatically charge and dispense a product from a reservoir to a point of dispersal that includes a nozzle having an exit orifice and being disposed at the point of dispersal to disperse the product. A channel is included that permits the electrostatic charging of product. A positive displacement mechanism is used to move the product from the reservoir to the nozzle. A power source supplies an electrical charge. A portion of a high voltage electrode being disposed between the reservoir and the nozzle is used to electrostatically charge product within the channel at a charging location. A distance between the charging location and the nozzle exit orifice is governed by V.sub.o /d<100,000, wherein V.sub.o =an output voltage of said high voltage power supply and d=linear distance between the charging location and said nozzle exit orifice.
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