发明名称 |
Blowout preventer with removable packer |
摘要 |
An improved ram-type blowout preventer having an improved resilient ram packer which includes an upper retainer plate and a lower retainer plate which each have a front face with a central recess therein, a back and sides, resilient end elements bonded between the plates at the sides and having facing surfaces extending from front to back and a resilient insert shaped to be positioned between said plates and between said end elements with sides mating with the shape of the facing surfaces of the end elements.
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申请公布号 |
US5333832(A) |
申请公布日期 |
1994.08.02 |
申请号 |
US19930131132 |
申请日期 |
1993.10.04 |
申请人 |
BARTHOLOMEW, LEROY E.;CHILDS, ERIC G.;CALLAHAN, DAVID M. |
发明人 |
BARTHOLOMEW, LEROY E.;CHILDS, ERIC G.;CALLAHAN, DAVID M. |
分类号 |
E21B33/06;(IPC1-7):E21B33/06 |
主分类号 |
E21B33/06 |
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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