Fluid flow detector
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United States of America Patent
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Nov 22, 2011
Grant Date -
Mar 25, 2010
app pub date -
Aug 17, 2009
filing date -
Sep 25, 2008
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Abstract
An upstream hole is formed at the upstream end of a detector main body of a liquid flow detector for detecting liquid flow, and a downstream hole is formed at the downstream end, with a liquid flow channel comprising a liquid flow detection channel, discharge channel, and, optionally, intermediate flow channel, being formed between the upstream hole and downstream hole. A mobile body which is optionally, spherical, moves with the flow of liquid, and is arranged inside the liquid flow channel. The diameter of the liquid flow detection channel is smaller than the diameter of the discharge channel, and the diameter of the mobile body is slightly smaller than the diameter of the liquid flow detection channel. The shape of the peripheral edge part of the upstream hole and the downstream hole is optionally elliptical.
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