(under subclass 446) Apparatus wherein the leading portion of the excavating implement is vibrated or moved back and forth relative to the remainder of the implement. [figure] [caption]A - Bucket; B - Boom arm; C - Hydraulic cylinder; D - Bucket teeth; E, F - Piston and piston rod; G - Vibrating hammer
SEE OR SEARCH CLASS
172, Earth Working,
40, for a vibrating earth working tool.
299, Mining or In Situ Disintegration of Hard Material,
37.1+, for a disintegrating machine having a reciprocating cutter; subclasses 85.1 and 85.2 for a cutterhead or teeth having parts moving relatively during operation.
