US PATENT SUBCLASS 175 / 90
.~ Flexible or articulated member carried on support swingable or laterally movable relative to bore axis

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

89  DF  TOOL ELEMENT OR CONTINUOUSLY DRIVEN FLEXIBLE OR ARTICULATED ENDLESS MEMBER {1}
90.~ Flexible or articulated member carried on support swingable or laterally movable relative to bore axis

DEFINITION

Classification: 175/90

(under subclass 89) Apparatus in which a flexible or articulated member is carried on a support which is adapted to move all or a portion of said member radially relative to the axis of the bore to undercut or slot the wall of the borehole.

SEE OR SEARCH THIS CLASS, SUBCLASS:

263+, for cutter elements laterally shiftable below ground.