Coating processes – Foraminous product produced
Reexamination Certificate
2006-05-02
2006-05-02
Hook, James (Department: 3754)
Coating processes
Foraminous product produced
C427S244000, C427S247000, C138S146000, C138S149000
Reexamination Certificate
active
07037557
ABSTRACT:
A high temperature pre-insulated pipe system is shown which can withstand conveyance temperatures in excess of 250° F. The pipe system includes a first and second length of insulated and jacketed pipe. Each pipe length includes an inner metal pipe having an interior surface and an exterior surface and having an envelope of foamed insulation surrounding the inner pipe exterior surface. A thermally protective coating layer is applied between the metal pipe exterior and the surrounding layer of foamed insulation. The thermally protective layer effectively lowers the interface temperature between the inner metal pipe and outer foamed layer to prevent disbondment of the outer foamed layer as the temperature of the inner pipe increases.
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Gunter, Jr. Charles D.
Hook James
Thermacor Process, LP
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