- 专利标题: Direct casting of ultrahard insert in bit body
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申请号: US16061680申请日: 2016-12-14
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公开(公告)号: US11021913B2公开(公告)日: 2021-06-01
- 发明人: Yahua Bao , John Daniel Belnap
- 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
- 国际申请: PCT/US2016/066730 WO 20161214
- 国际公布: WO2017/106388 WO 20170622
- 主分类号: E21B10/42
- IPC分类号: E21B10/42 ; E21B10/48 ; E21B10/54 ; E21B10/55 ; E21B10/567 ; E21B10/573 ; E21B10/58 ; B23P15/28
摘要:
A cutting bit includes a body, a plurality of blades, and at least one ultrahard insert cast directly into at least one of the plurality of blades. The ultrahard insert is positioned with a rear face directly contacting the blade.
公开/授权文献
- US20180371844A1 DIRECT CASTING OF ULTRAHARD INSERT IN BIT BODY 公开/授权日:2018-12-27
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