| 摘要 |
A blade and a blade assembly wherein the blade has a front, beveled, sharpen ed edge (13), two side edges (14, 16) meeting at a point (18) spaced from the front edge and at least one attachment structure (20, 22) extending outwardl y from each side edge. A blade holder, which extends beyond the side edges and attachment structures of the blade, sits on a top surface of the blade and i s attached to the blade by a portion thereof which receives the attachment structures. The holder has an opening in an exposed surface to receive an extension from a drive mechanism such that when the drive mechanism is activated the blade is caused to vibrate of oscillate. The blade is oscillat ed in a lateral fashion when driven by a rod rotating along a circular path.</S DOAB>
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