Application of Hydraulic Friction Reducing Internal Diameter Coatings for Fire Protection Piping
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United States of America Patent
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Issued Date -
Aug 6, 2009
app pub date -
Feb 4, 2009
filing date -
Feb 5, 2008
priority date (Note) -
Abandoned
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Abstract
The present invention relates to in-line coating of a continuously moving substrate, such as a tube or conduit, preferably of the type used for applications such as fire sprinkler piping. The present invention includes a fire sprinkler pipe defining an internal pathway. The interior surface of the pipe is coated with a low friction material such as a fluoropolymer, silicone or epoxy composition.
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