Spray gun
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United States of America Patent
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Jul 7, 2015
Grant Date -
Sep 20, 2012
app pub date -
Oct 19, 2010
filing date -
Oct 20, 2009
priority date (Note) -
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Abstract
A spray gun (1) forms a desired spray pattern by atomizing by means of atomizing air (A) a spray liquid which is sprayed from a liquid ejection port (44) opened/closed by a needle valve (4), and jetting pattern air (P) to the flow of spray mist of the atomized spray liquid. A nozzle taper angle (θ1) is set in a range of 5° to 15°, and a cap taper angle (θ2) is set in a range of 20° to 40°. Atomizing air (A) is jetted from a nozzle insertion hole (58) toward the center of a nozzle (3). Pattern air (P) is jetted in a spreading suppressed region (R) wherein the flow of the spray mist does not spread over an area greater than or equal to a predetermined cross-sectional area, to the flow of spray mist, and as a result, the spray mist is more uniformly sprayed over a wide range.
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