US PATENT SUBCLASS 432 / 2
.~ Including apparatus purging, cleaning or accretion preventing


Current as of: June, 1999
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432 /   HD   HEATING

1  DF  PROCESSES OF HEATING OR HEATER OPERATION {14}
2.~ Including apparatus purging, cleaning or accretion preventing


DEFINITION

Classification: 432/2

(under subclass 1) Process including a procedure for flushing out, dislodging, or preventing collection of undesirable material in heating apparatus.

SEE OR SEARCH THIS CLASS, SUBCLASS:

50, for apparatus under the class definition including a protector, cleaner or support for a condition sensor: subclass 74 for heating apparatus with a drip, spill or leakage collector: and subclass 75 for heating apparatus having cleaning means.

SEE OR SEARCH CLASS

110, Furnaces,

341+, for method of operating solid fuel furnaces or refuse incinerators. 134, Cleaning and Liquid Contact With Solids,

1, 42 for a residual process of cleaning, or contacting a solid with a liquid.

165, Heat Exchange,

5, for the cleaning of a regenerator.

201, Distillation: Processes, Thermolytic,

2, for a process including a step of cleaning an apparatus in which a solid carbonaceous material is heated.

431, Combustion,

2, for a process of decarbonizing, cleaning or purging a combustion device.