Metal working – Method of mechanical manufacture – Assembling or joining
Reexamination Certificate
2007-11-06
2007-11-06
Hong, John C. (Department: 3726)
Metal working
Method of mechanical manufacture
Assembling or joining
C029S452000, C029S897150, C126S33700R
Reexamination Certificate
active
11040641
ABSTRACT:
A wire oven rack, capable of being later-coated with porcelain, including, a plurality of elongated steel wire members joined together to form an oven rack having an outer surface. The plurality of elongated steel wire members are made from a steel rod material containing from about 80 to about 99.9% by weight of iron, from about 0.001 to about 0.08% by weight of carbon and from about 0.001 to about 0.2% by weight of a carbon stabilizing transition metal, preferably selected from the group consisting of Vanadium, Tantalum, Titanium and Niobium. The plurality of elongated steel wire members are preferably made from the steel rod material by drawing the steel rod material to form steel wire; wherein the diameter of the cross-sectional area of the steel rod material is reduced by at least about 20% when the steel rod material is drawn to form the steel wire, so as to prevent chipping of the glass coating material from the outer surface, when the porcelain coating is later applied, due to the release of hydrogen gas from the coated steel wire members when the steel wire is heated above 900° F.
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Affidavit of Roderick I. L. Guthrie in the Matter of Canadian Patent Application No. 2,422,158 as filed in the Protest noted in Item F above.
Hong John C.
Marshall & Gerstein & Borun LLP
SSW Holding Company, Inc.
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