US PATENT SUBCLASS 148 / 197
.~.~ Utilizing fluid contact other than flame

Current as of: June, 1999
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148 /   HD   METAL TREATMENT

95  DF  PROCESS OF MODIFYING OR MAINTAINING INTERNAL PHYSICAL STRUCTURE (I.E., MICROSTRUCTURE) OR CHEMICAL PROPERTIES OF METAL, PROCESS OF REACTIVE COATING OF METAL AND PROCESS OF CHEMICAL-HEAT REMOVING (E.G., FLAME-CUTTING, ETC.) OR BURNING OF METAL {17}
194  DF  .~ Chemical-heat removing (e.g., flame-cutting, etc.) or burning of metal {9}
197.~.~ Utilizing fluid contact other than flame

DEFINITION

Classification: 148/197

Utilizing fluid contact other than flame:

(under subclass 194) Process wherein an auxiliary gas or liquid, utilized for purposes other than chemical generation of heat, is brought into contact with a workpiece for any reason; such as, for collecting or ensnaring solid refuse or waste material produced by the removing or burning process or for quenching or cooling operations.