US PATENT SUBCLASS 175 / 11
BORING BY DIRECTLY APPLYING HEAT TO FLUIDIZE OR COMMINUTE

Current as of: June, 1999
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175 /   HD   BORING OR PENETRATING THE EARTH

11BORING BY DIRECTLY APPLYING HEAT TO FLUIDIZE OR COMMINUTE {5}
12  DF  .~> Combustion of the formation material
13  DF  .~> With introduction of slag forming flux
14  DF  .~> Combustion is confined chamber having restricted discharge orifice
15  DF  .~> Rotating the heating tool
16  DF  .~> Electrically produced heat

DEFINITION

Classification: 175/11

(under the class definition) Process or apparatus comprising a step or means for directing a form of heat energy into a mineral body to (1) alter the physical state of the body or (2) separate the mineral body into particles (e.g., spalling).

(1) Note. Class 175 is considered generic to heat working of naturally occurring mineral bodies in situ, and as such, takes all processes and apparatus particularly adapted to heat working of said bodies, not limited to (1) surface treatment or channeling of blocks of stone, classified in Class 125, Stone Working, or (2) mining or channeling of in situ mineral bodies for the recovery of valuable material therefrom, classified in Class 299, Mining or In Situ Disintegration of Hard Material.

(2) Note. Apparatus classifiable herein, must include a structural modification peculiar to mineral working. For heating devices of general application search the appropriate heating class.

SEE OR SEARCH THIS CLASS, SUBCLASS:

2, for subject matter in which heat energy is generated by an explosion which is caused to occur in a borehole.

17, for subject matter relating to heating or cooling within the borehole or heating or cooling drilling fluid.

SEE OR SEARCH CLASS 60, Power Plants,

200.1+, for jet reaction motors and processes for operating the same and subclasses 39.01+ for mixed fluid power plants.

65, Glass Manufacturing,

112+, for glass stock treating including severing or perforating, and see the collection of notes thereunder.

75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures, appropriate subclasses for smelting of mineral ores.

110, Furnaces, appropriate subclasses for furnaces.

125, Stone Working,

2, for channeling or working blocks of stone by heat.

148, Metal Treatment,

194, for processes of chemical-heat removing (e.g., flame cutting, etc.) or burning (i.e., oxidizing) of metal.

166, Wells, 302, and the subclasses there noted for well processes including a heating step, and subclasses 57+ for well heating apparatus.

225, Severing by Tearing or Breaking,

93+, for apparatus for severing by breaking, especially subclass 93.5 for such apparatus utilizing thermal shock.

241, Solid Material Comminution or Disintegration,

1, for solid material comminution and disintegration by heat.

266, Metallurgical Apparatus,

48+, for metallurgical blowpipes.

299, Mining or In Situ Disintegration of Hard Material,

3+, for in situ conversion of solid material to fluid by the use the heat, and subclass 14 for a process including a step of heating.

405, Hydraulic and Earth Engineering,

131, for thawing earth.

423, Chemistry of Inorganic Compounds, for chemically treating mixtures to obtain metal containing compounds which processes may include heating.