发明名称 |
MEANS FOR MODIFYING SUCKER ROD |
摘要 |
Method and apparatus for removing a scraper apparatus from the outer peripheral wall surface of a sucker rod comprising pulling the rod through a die wherein the die has an inner surface which circumferentially and slidably surrounds a marginal exterior length of the rod so as to enable part of the die to abuttingly engage the scraper apparatus in a manner which strips the scraper free from the rod.
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申请公布号 |
US3750261(A) |
申请公布日期 |
1973.08.07 |
申请号 |
USD3750261 |
申请日期 |
1971.08.09 |
申请人 |
RODCO INC,US |
发明人 |
IGLEHART J,US;IGLEHART H,US |
分类号 |
E21B17/00;E21B37/02;(IPC1-7):B23P19/02 |
主分类号 |
E21B17/00 |
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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