(under the class definition) Apparatus in which a structure is supported or moved relative to a bit or cutter element so that it will strip, wipe, scrape, or break up adhering accumulations of mud or cuttings from a bit or cutter element.
(1) Note. Since nearly all relatively moving or rolling cutter elements which are adjacent to another cutter element inherently perform a cleaning action, such structures have been excluded from this subclass and are classified on other structure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
84, for an above ground cleaner for the boring means.
96, and 319, for below ground drive means for plural relatively movable cutting edges.
341, for plural rolling cutters with intermeshing teeth. 381, for plural cutting edges relatively longitudinally movable during operation.
SEE OR SEARCH CLASS
172, Earth Working,
606, for a cleaner for the tool of an earth working implement.
