发明名称 |
Core drilling system with torque shaft |
摘要 |
A core drilling system is disclosed herein in which a torque tube has a groove or keyway which receives a rotating wheel or key to prevent a transmission box and motor from rotating during drilling operation. As such, the operator does not need to hold a stabilizing arm to resist counter rotational forces during the drilling process. The operator may focus on the hole to be cut in a substrate. Additionally, a torque tube stabilizing leg assembly may be secured to the free distal end portion of the torque tube. |
申请公布号 |
US8647030(B2) |
申请公布日期 |
2014.02.11 |
申请号 |
US20100795242 |
申请日期 |
2010.06.07 |
申请人 |
DUNCAN C. WARREN;JOHNSEN ANDERS |
发明人 |
DUNCAN C. WARREN;JOHNSEN ANDERS |
分类号 |
B23B47/18;B23B47/26 |
主分类号 |
B23B47/18 |
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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