发明名称 |
DRILL PIPE HANDLING APPARATUS |
摘要 |
Drill pipe handling apparatus for taking pipe from a well derrick floor to a pipe rack, wherein the pipe is transferred to a lower pivotable pipe support disposed in proximity to the pipe rack, and the pipe is then gradually lowered from said pipe support onto the pipe rack by a pivoting of the pipe support, and with the pipe supported during its lowering on a pair of pipe support arms extending laterally relative to the pipe support and pivoting in response to the weight of the pipe thereon.
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申请公布号 |
US3785506(A) |
申请公布日期 |
1974.01.15 |
申请号 |
USD3785506 |
申请日期 |
1971.09.10 |
申请人 |
ROGER A CROCKER,US |
发明人 |
CROCKER R,US;SCHOOLCRAFT J,US |
分类号 |
E21B19/15;(IPC1-7):E21B19/00 |
主分类号 |
E21B19/15 |
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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