Metal working – Method of mechanical manufacture – Assembling or joining
Reexamination Certificate
2005-07-12
2005-07-12
Bryant, David P. (Department: 3726)
Metal working
Method of mechanical manufacture
Assembling or joining
C029S458000, C029S452000, C029S897150, C312S410000
Reexamination Certificate
active
06915552
ABSTRACT:
A porcelain coated steel wire oven rack. The preferred coated steel wire oven rack includes 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 to prevent chipping of the glass material from the outer surface due to the release of hydrogen gas from the steel wire members when the steel wire is heated above 900° F.
REFERENCES:
patent: 1896307 (1933-02-01), Hatch
patent: 2633400 (1953-03-01), Ring
patent: 4194495 (1980-03-01), Scherer
patent: 5651597 (1997-07-01), Oslin
Bryant David P.
Kenny Stephen
Marshall & Gerstein & Borun LLP
SSW Holdings Company, Inc.
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