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Methods for coating conduit interior surfaces utilizing a thermal spray gun with extension arm

United States Patent

October 2, 2007
View the Complete Patent at the US Patent & Trademark Office
Idaho National Laboratory - Visit the Technology Transfer and Commercialization Office Website
Systems and methods for applying a coating to an interior surface of a conduit. In one embodiment, a spray gun configured to apply a coating is attached to an extension arm which may be inserted into the bore of a pipe. The spray gun may be a thermal spray gun adapted to apply a powder coating. An evacuation system may be used to provide a volume area of reduced air pressure for drawing overspray out of the pipe interior during coating. The extension arm as well as the spray gun may be cooled to maintain a consistent temperature in the system, allowing for more consistent coating.
Moore; Karen A. (Idaho Falls, ID), Zatorski; Raymond A. (East Hampton, CT)
Battelle Energy Alliance, LLC (Idaho Falls, ID)
11/ 122,164
May 3, 2005
GOVERNMENT RIGHTS The United States Government has certain rights in this invention pursuant to Contract No. DE-AC07-99ID13727, and Contract No. DE-AC07-05ID14517 between the United States Department of Energy and Battelle Energy Alliance, LLC.