发明授权
- 专利标题: Rolling cutter with improved rolling efficiency
- 专利标题(中): 轧机具有提高的轧制效率
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申请号: US13677105申请日: 2012-11-14
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公开(公告)号: US09291000B2公开(公告)日: 2016-03-22
- 发明人: Youhe Zhang , Yuelin Shen , Yuri Burhan , Kjell Haugvaldstad
- 申请人: SMITH INTERNATIONAL, INC.
- 申请人地址: US TX Houston
- 专利权人: Smith International, Inc.
- 当前专利权人: Smith International, Inc.
- 当前专利权人地址: US TX Houston
- 主分类号: E21B10/627
- IPC分类号: E21B10/627 ; E21B10/50 ; E21B10/08 ; E21B10/62 ; E21B10/633 ; E21B10/55
摘要:
A cutting structure may include an outer support element; and an inner rotatable cutting element comprising a cutting surface at its upper end; wherein the inner rotatable cutting element comprises at least one line contact along a circumferential side surface thereof and/or at least one point contact at a bottom face thereof.
公开/授权文献
- US20130146367A1 ROLLING CUTTER WITH IMPROVED ROLLING EFFICIENCY 公开/授权日:2013-06-13
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