Appeal No. 95-4615
Application No. 08/158,853
The subject matter on appeal is directed to a roof or lid
for melting furnaces, which generally has a diameter of twenty
six feet. See specification, page 1. Claims 1, 13 and 20 are
representative of the subject matter on appeal and read as
follows:
1. A furnace lid, comprising:
a center panel;
side panels surrounding the center panel, each side panel
having an outer edge, an inner edge abutting the center panel
and lateral edges each extending between their outer edge and
their inner edge, and abutting a lateral edge of an adjacent
side panel, said side panels being inclined upwardly from
their outer edges toward their inner edges, forming with the
center panel a lid having substantially a dome shape, the
lateral edges and inner edges being formed with keyways
accessible from a surface of the lid; and
keys located in the keyways, wherein the center panel,
keys and side panels are formed of castable refractory.
13. A segment of a furnace lid comprising:
a substantially planar panel of precast refractory having
an upper surface, a lower surface, lateral edges and an inner
edge, wherein the lower surface has a portion inclined
relative to the upper surface:
a concave channel extending along each lateral edge,
located below the outer planar surface of the panel; and
a relatively thin passage or recess formed along the
lateral edges between an outer surface of the panel and the
channel, connecting the channel and said outer surface of the
panel.
2
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Last modified: November 3, 2007