Auxiliary tool for filling pipe with fluid, and fluid injection method for injecting fluid into pipe
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United States of America Patent
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Aug 14, 2012
Grant Date -
Nov 6, 2008
app pub date -
Mar 27, 2008
filing date -
Mar 28, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An auxiliary tool comprises a body formed of a core material and an elastic cloth covering that covers the surface of the core material. The body is configured for insertion into a pipe ahead of a fluid used to fill the pipe so that during filling of the pipe the flow of the fluid advances the body through the pipe to force out and discharge from the pipe air existing ahead of the body while the body is advanced inside of the pipe.
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