Invention Grant
- Patent Title: Foot valve assembly for a down hole drill
- Patent Title (中): 用于井下钻的底阀组件
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Application No.: US12729828Application Date: 2010-03-23
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Publication No.: US08561730B2Publication Date: 2013-10-22
- Inventor: Jing James Yao , Paul Campbell , William H. Dell, II , Dale R. Wolfer , Timothy J. Plunkett
- Applicant: Jing James Yao , Paul Campbell , William H. Dell, II , Dale R. Wolfer , Timothy J. Plunkett
- Applicant Address: US TX Grand Prairie
- Assignee: Atlas Copco Secoroc LLC
- Current Assignee: Atlas Copco Secoroc LLC
- Current Assignee Address: US TX Grand Prairie
- Agency: Venable LLP
- Agent Eric J. Franklin
- Main IPC: E21B10/36
- IPC: E21B10/36
Abstract:
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.
Public/Granted literature
- US20110232922A1 FOOT VALVE ASSEMBLY FOR A DOWN HOLE DRILL Public/Granted day:2011-09-29
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