发明授权
- 专利标题： Foot valve assembly for a down hole drill
- 专利标题（中）： 用于井下钻的底阀组件
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申请号： US12729828申请日： 2010-03-23
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公开(公告)号： US08561730B2公开(公告)日： 2013-10-22
- 发明人: Jing James Yao , Paul Campbell , William H. Dell, II , Dale R. Wolfer , Timothy J. Plunkett
- 申请人： Jing James Yao , Paul Campbell , William H. Dell, II , Dale R. Wolfer , Timothy J. Plunkett
- 申请人地址： US TX Grand Prairie
- 专利权人： Atlas Copco Secoroc LLC
- 当前专利权人： Atlas Copco Secoroc LLC
- 当前专利权人地址： US TX Grand Prairie
- 代理机构： Venable LLP
- 代理商 Eric J. Franklin
- 主分类号： E21B10/36
- IPC分类号： E21B10/36
摘要：
A retaining assembly for a cylindrical member and support sleeve in the bore of a component of a DTH. The cylindrical member and support sleeve may, for example, be a foot valve assembly for insertion into a counter bore in a bit. The cylindrical member has a cylindrical member rigidity and at least a portion of the support sleeve has a rigidity greater than the cylindrical member rigidity. A gap is provided between the sleeve and the component bore of the DTH. The cylindrical member deforms in the gap, resulting in the cylindrical member being fixedly sandwiched between the support sleeve and the component bore.
公开/授权文献
- US20110232922A1 FOOT VALVE ASSEMBLY FOR A DOWN HOLE DRILL 公开/授权日：2011-09-29
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