Nozzle device
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United States of America Patent
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Nov 3, 2020
Grant Date -
Sep 28, 2017
app pub date -
Mar 24, 2017
filing date -
Mar 25, 2016
priority date (Note) -
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Abstract
A nozzle device includes a first passage, a second passage, and a first ambient valve clapper. The first passage includes a first intake and a first outlet. The second passage includes a second intake and a second outlet. The first ambient valve clapper is configured to control entry of fluid into the second passage through the second intake. The fluid is pumped to enter the first passage through the first intake to form a first negative pressure zone next to the first outlet, and the first ambient valve clapper is opened via a pressure difference between the first negative pressure zone and the surrounding of the nozzle device, allowing the fluid to flow into the second passage.
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