Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Reexamination Certificate
2006-08-15
2006-08-15
Dye, Rena (Department: 1774)
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
C428S702000, C428S689000, C501S080000, C501S108000, C222S591000, C222S606000, C222S627000, C226S200000, C104S133000, C104S304000, C104S304000
Reexamination Certificate
active
07090918
ABSTRACT:
The invention describes an article and method comprising a refractory article having an outer surface covered by an insulating coating over which a protective glaze is applied. The method includes applying a suspension of an insulating coating to a refractory piece, drying the suspension, applying a glaze slip over the coating, and drying the slip to form a protective glaze. In one embodiment, the article comprises a carbon-bonded alumina-graphite nozzle, an insulating coating containing hollow microspheres, and a protective glaze formed from a fusible frit. The invention is described as improving wetting to the refractory piece, reducing delamination of the glaze and insulating coating from the piece, and reducing oxidation of the piece.
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Benson Paul Martin
Fuehrer Martin
Leroux Vincent
Dicus Tamra L.
Dye Rena
Klemz, Jr. Robert S.
Satina Donald M.
Vesuvius Crucible Company
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