US PATENT SUBCLASS 175 / 57
PROCESSES

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

57PROCESSES {5}
58  DF  .~> Sampling of earth formations {2}
61  DF  .~> Boring curved or redirected bores
62  DF  .~> Boring horizontal bores
64  DF  .~> Chemical reaction with earth formation or drilling fluid constituent
65  DF  .~> Boring with specific fluid {7}

DEFINITION

Classification: 175/57

(under the class definition) Processes.

(1) Note. Processes classified in this subclass comprise, for example, processes of manipulating drills, drill rods or expanding reamers to drill or ream a borehole or processes of operating various types of drill rig power supplies and the like.

(2) Note. Subclasses 1 through 56 includes both processes and apparatus, and processes relating to the subject matter provided for in those subclasses will be found therein.

SEE OR SEARCH CLASS

37, Excavating,

195, excavating processes not otherwise classified.

144, Woodworking, 365, for a woodworking process of turning, boring or drilling.

166, Wells,

244.1+, for well processes which may include a step of well boring.

173, Tool Driving or Impacting,

1, for a process limited to the operation of a tool driving or impacting device. If steps peculiar to performing an earth boring operation are included, classification will be in Class 175.

299, Mining or In Situ Disintegration of Hard Material,

10+, for a process of recovering valuable material from the earth or disintegrating hard material in situ.