Congdon Thomas Marshall,Parzynski, JR. David Bruno
申请号：
US201615380402
公开号：
US2018171586(A1)
申请日:
2016.12.15
申请国别(地区):
美国
年份:
2018
代理人:
摘要：
A scarifier board comprises a rectangular attachment portion defining a width, a height and a thickness and the attachment portion includes a front face and a back face, and a first plurality of mounting apertures extend through the front face and the back face. The board also includes a working portion defining a plurality of anti-rotation grooves and a plurality of working zones therebetween having a wear resistant material, and the working portion includes a strip of wear resistant material disposed immediately below the attachment portion.
