发明授权
- 专利标题: Stress relief feature on PDC cutter
- 专利标题(中): PDC刀具上的应力消除功能
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申请号: US11372614申请日: 2006-03-10
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公开(公告)号: US07740090B2公开(公告)日: 2010-06-22
- 发明人: Yuelin Shen , John Youhe Zhang
- 申请人: Yuelin Shen , John Youhe Zhang
- 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: E21B10/573
- IPC分类号: E21B10/573
摘要:
A cutter having a base portion, an ultrahard layer disposed on the base portion, and at least one relief groove formed on an outer surface of the cutter. The at least one relief groove is configured to form a relief gap between the ultrahard layer and an inside surface of a cutter pocket.
公开/授权文献
- US20060219439A1 Stress relief feature on PDC cutter 公开/授权日:2006-10-05
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