发明名称 |
PORTABLE DRILLING APPARATUS |
摘要 |
A drilling apparatus for drilling underground, small diameter bore holes wherein a support frame of the apparatus is formed in part by a pair of hydraulic cylinders arranged parallel one to another. A head mounting plate that carries the drill motor is releaseably attached to a barrel portion of each hydraulic cylinder and the barrel portion is urged by fluid pressure along a support rod extending axially through the barrel. The ends of the support rods are attached by front and rear supports to form a frame that is anchored in position relative to the movable barrel. |
申请公布号 |
WO2005033466(A2) |
申请公布日期 |
2005.04.14 |
申请号 |
WO2004US32193 |
申请日期 |
2004.10.01 |
申请人 |
DYNADRILL, INC.;CLELLAND, PATRICK, J. |
发明人 |
CLELLAND, PATRICK, J. |
分类号 |
B23Q5/00;E21B;E21B7/04;E21B7/20;E21B19/00;E21B19/086 |
主分类号 |
B23Q5/00 |
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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