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Roenigk; Howard L.
Cabot, PA
No. of patents:

Patent Number Title Of Patent Date Issued
6508977 Reinforced refractory shaft design for fluxing molten metal January 21, 2003
A shaft for use with molten aluminum using an impeller mounted on the shaft comprising a protective refractory sleeve resistant to attack by molten aluminum, the protective sleeve employing a reinforcing media and mounted on the shaft to extend above and below the molten aluminum surface
5078595 Carbon flue wall and method of making January 7, 1992
A flue wall, and method for making same, adapted to be readily assembly with like walls and other components to form a battery of heated comparments in a pit in which carbon anodes, such as used in the manufacture of alumina are baked. The wall includes upper and lower sections each
4975049 Refractory block for rotary kiln December 4, 1990
A refractory block assembly for the nose ring of a rotary kiln. Self-aligning nuts contained in recesses of a refractory casting generally align with bolts radially extending through holes spaced around the periphery of a retainer in the nose ring. The nuts and recesses are sized and

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