FLUID ACCELERATION PIPE
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United States of America Patent
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app pub date -
Sep 30, 2016
filing date -
May 23, 2014
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Abandoned
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Abstract
The fluid acceleration pipe includes a main body having a pipe cavity and defining a central axis. The whole inner surface of the main body is exposed to the pipe cavity. The main body is formed with at least 3 spiral ribs arranged spacedly along a perimeter direction of the main body. A spiral groove is formed between any two adjacent ones of the spiral ribs. A column-shaped imaginary datum plane is defined by the most bottom portion of each spiral groove about the central axis. A projection of the most top portion of each spiral rib on the imaginary datum plane defines a spiral line. The lead angle of the spiral line is 50 to 60 degrees. The top portion of each spiral rib has a convex-arc-shaped surface, and the bottom portion of each spiral groove has a concave-arc-shaped surface.
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