US PATENT SUBCLASS 175 / 92
WITH BELOW-GROUND TOOL DRIVE PRIME MOVER

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

92WITH BELOW-GROUND TOOL DRIVE PRIME MOVER {11}
93  DF  .~> Below-ground (1) generation of motive fluid, or (2) storage of motivating energy
94  DF  .~> With below-ground feed means
95  DF  .~> Plural below-ground drive prime movers {1}
97  DF  .~> With means to anchor prime movers support to bore wall {1}
100  DF  .~> Discharge passage for motive fluid directed toward bore entrance
101  DF  .~> With positive connection between tool and support shaft for rotary below ground motor
102  DF  .~> With below-ground conveyer or impeller for removal of cuttings
103  DF  .~> With above-ground means
104  DF  .~> Electric {1}
106  DF  .~> With mechanical motion-converting means
107  DF  .~> Fluid rotary type

DEFINITION

Classification: 175/92

(under the class definition) Apparatus including a means adapted to drive a boring tool through recurring cycles comprising a means commonly called a motor which is adapted to convert a source of energy into simple mechanical motion, said motor being so related to the boring tool that it enters the borehole and advances with the boring tool as the boring tool performs its earth boring function.

(1) Note. The boring means including the motor need not be claimed as being located in the borehole. The mere disclosure that the boring means is of the type in which the drive motor for the tool advances into the bore with the tool is sufficient for classification in this subclass.

(2) Note. Mere subsurface mechanical motion converting boring tool drive means, such as for example, vanes on a tool shaft which contact the fluid in the borehole and causes the tool to rotate as the shaft is reciprocated are not considered motors for this subclass.

(3) Note. A compilation of all types of motors will be found in the notes to the class definition of Class 60.

SEE OR SEARCH THIS CLASS, SUBCLASS:

6, for underwater tool drive means. 26, for automatic control of boring means including a below ground prime mover

323, and search there noted for a tool shaft provided with an exteriorly disposed helical structure for imparting rotary motion to the shaft in response to a reciprocation of said shaft.

SEE OR SEARCH CLASS

15, Brushing, Scrubbing, and General Cleaning,

104.05+, for inside pipe and tube cleaners which may be motor driven.

173, Tool Driving or Impacting, appropriate subclass for a means for driving or impacting a tool, not limited to a specific art. If means, such as specific shape of the work contacting portion of an earth boring tool, bore engaging guide or anchor, etc., are included, classification will be in Class 175.