发明名称 |
Shearing Cutter on a Degradation Drum |
摘要 |
In one aspect of the present invention, a pick comprises a forward end and rearward end. The forward end comprises a shearing cutter and the rearward end comprises a shank. The shank and the shearing cutter are arranged co-axially about a central axis. The shearing cutter is supported by an enlarged section that narrows towards the shearing cutter and that has a greater cross section than the shank along a plane substantially perpendicular to the central axis. The shearing cutter comprises a flat surface that is substantially perpendicular to the central axis.
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申请公布号 |
US2010244545(A1) |
申请公布日期 |
2010.09.30 |
申请号 |
US20100797822 |
申请日期 |
2010.06.10 |
申请人 |
HALL DAVID R;JEPSON JEFF;CROCKETT RONALD B |
发明人 |
HALL DAVID R.;JEPSON JEFF;CROCKETT RONALD B. |
分类号 |
E21C35/18;E21C25/10;E21C35/183;E21C35/197 |
主分类号 |
E21C35/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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