Positive displacement flowmeter
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United States of America Patent
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Jan 18, 2011
Grant Date -
Nov 11, 2010
app pub date -
Mar 6, 2008
filing date -
Jan 24, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
, and a moving radius of the oval pitch curve is given by ri=a/(1−b cos nθi) (i=1, 2), where “ri (i=1, 2)” is the moving radius that is a distance from a center of rotation to the oval pitch curve, “a” is a homothetic coefficient, “b” is a flattening, “n” is a number of lobes, and “θi (i=1, 2) is a moving angle.
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