US PATENT SUBCLASS 266 / 218
.~.~.~ Having fluid inlet formed in vessel wall, e.g., tuyere

Current as of: June, 1999
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266 /   HD   METALLURGICAL APPARATUS

200  DF  MEANS FOR MELTING OR VAPORIZING METAL OR TREATING LIQUEFIED METAL {19}
216  DF  .~ By means introducing treating material {1}
217  DF  .~.~ Gaseous treating material {2}
218.~.~.~ Having fluid inlet formed in vessel wall, e.g., tuyere {5}
219  DF  .~.~.~.~> Having intersecting streams converging on central axis of vertical furnace
220  DF  .~.~.~.~> Having porous outlet
221  DF  .~.~.~.~> By means to introduce diverse material {1}
223  DF  .~.~.~.~> Having control means
224  DF  .~.~.~.~> Having tuyere formed in plug bottom

DEFINITION

Classification: 266/218

(under subclass 217) Device wherein the means is a short tubular member forming an aperture in the vessel wall.

SEE OR SEARCH THIS CLASS, SUBCLASS:

265+, for tuyere structure, per se.

SEE OR SEARCH CLASS

110, Furnaces,

182.5, for a tuyere in a furnace of general utility. 122, Liquid Heaters and Vaporizers,

6.6, for a tuyere having a closed water-circulation.