发明名称 |
DRILL PIPE POSITIONER FOR EARTH BORING MACHINE |
摘要 |
A drill pipe positioner that will lift, position and release a section of drill pipe in proper relation to the drill head and other elements of an earth boring machine and by reversing the action will attach to a section of drill pipe, lift and release it for removal and stacking. A first arm pivots on the support columns and a second arm unit pivots on the first arm. Grippers are attached to the second arm unit for gripping and holding a section of drill pipe.
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申请公布号 |
US3750769(A) |
申请公布日期 |
1973.08.07 |
申请号 |
USD3750769 |
申请日期 |
1971.10.29 |
申请人 |
DRESSER IND INC,US |
发明人 |
YOUNG J,US;CASON G,US;KUNKEL E,US |
分类号 |
E21B7/02;E21B7/28;E21B19/20;(IPC1-7):E21B19/00 |
主分类号 |
E21B7/02 |
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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