Metal working – Method of mechanical manufacture – Structural member making
Reexamination Certificate
2005-09-13
2005-09-13
Hong, John C. (Department: 3726)
Metal working
Method of mechanical manufacture
Structural member making
C029S407090, C029S406000, C266S281000
Reexamination Certificate
active
06941653
ABSTRACT:
A refractory lining is formed in a furnace by providing a carrier for a lining form which has dimensions that provide a uniform space for the introduction of refractory material when the lining form is concentrically located within the furnace. The carrier concentrically engages and is attached to the lining form, and includes a portion that engages the furnace and locates the carrier and the lining form, when attached, concentrically within the furnace to provide a uniform space therebetween. The carrier can also have an upper surface that slopes downwardly from adjacent its center to its periphery to convey particulate refractory material poured onto the surface into the space between the lining form and the furnace. Further, a fixture is provided to hold the lining form concentric while the particulate refractory material is compacted by vibration.
REFERENCES:
patent: 4251063 (1981-02-01), Goldberg et al.
patent: 4253646 (1981-03-01), Goto et al.
patent: 4570909 (1986-02-01), Hiroki et al.
patent: 4690327 (1987-09-01), Takai et al.
Calfa Jeffrey P.
Hong John C.
International Engine Intellectual Property Company LLC
Lukasik Susan L.
Sullivan Dennis Kelly
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