US PATENT SUBCLASS 175 / 207
WITH ABOVE-GROUND MEANS FOR HANDLING DRILLING FLUID OR CUTTING

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

207WITH ABOVE-GROUND MEANS FOR HANDLING DRILLING FLUID OR CUTTING {9}
208  DF  .~> Fluid spray
209  DF  .~> Fluid or cuttings directing or receiving means engaging bore entrance {2}
212  DF  .~> Pressurized gas supply
213  DF  .~> With suction pump inlet communicating with bore bottom
214  DF  .~> Fluid head on tool shaft having lateral port and axial passage with seal for means reciprocable in the head
215  DF  .~> With tool shaft having plural passages for drilling fluid
216  DF  .~> Standpipe
217  DF  .~> With pump
218  DF  .~> With valve

DEFINITION

Classification: 175/207

(under the class definition) Apparatus including means located outside the mouth of the borehole to conduct or circulate drilling fluid or cuttings to or from the borehole.

(1) Note. A tool shaft is not considered to be above ground apparatus for the purposes of this subclass even though a section of the shaft may be recited as above ground in a claim. However, if structure is claimed which is disclosed as always functioning above ground (e.g., supporting swivel, or pipe section larger than the completed bore), the patent will be classified herein even though the structural element is nominally claimed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

65+, for processes of drilling with fluid.

88, for above ground vehicle or conveyor for carrying cuttings laterally of bore axis.

161, for above ground means to shift tool laterally of bore axis to dump cuttings.

172, for an endless flexible conveyor for removing the cuttings from the bore. SEE OR SEARCH CLASS

15, Brushing, Scrubbing, and General Cleaning,

300.1+, for air blast and/or suction cleaners.

137, Fluid Handling, for fluid handling means of general utility.

166, Wells,

75.11+, for well heads.

173, Tool Driving or Impacting,

197+, and see the search notes therein for a tool driving or impacting means provided with work cleansing means.

184, Lubrication, for lubricating apparatus of general utility.

285, Pipe Joints or Couplings, for fluid pipe couplings of general utility and particularly

272+, for fluid conducting swivels.