US PATENT SUBCLASS 175 / 77
SIDE WALL TOOL FED LATERALLY WITHOUT ROTATION FROM INACCESSIBLE HOLE


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

77SIDE WALL TOOL FED LATERALLY WITHOUT ROTATION FROM INACCESSIBLE HOLE


DEFINITION

Classification: 175/77

(under the class definition) Apparatus comprising means for cutting the earth which cuts without requiring rotation of the cutting means about an axis coincident with its direction of advance, said cutting means being fed from an inaccessible hole.

(1) Note. For the meaning of "inaccessible hole", see the class definition.

SEE OR SEARCH THIS CLASS, SUBCLASS:

79, and the search there noted for tool advance guides.

SEE OR SEARCH CLASS

166, Wells,

100, for a lateral probe sealed against a well wall which has similar structure.