Invention Grant
US08403600B2 Drilling tool, a self-drilling rock bolt, a drill bit, an anchoring device for a self-drilling rock bolt, a shaft for a drilling tool and an end coupling for a drilling tool
失效
钻孔工具，自钻岩石锚杆，钻头，用于自钻岩石锚杆的锚固装置，用于钻具的轴和用于钻具的端部联接器
- Patent Title: Drilling tool, a self-drilling rock bolt, a drill bit, an anchoring device for a self-drilling rock bolt, a shaft for a drilling tool and an end coupling for a drilling tool
- Patent Title (中): 钻孔工具，自钻岩石锚杆，钻头，用于自钻岩石锚杆的锚固装置，用于钻具的轴和用于钻具的端部联接器
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Application No.: US12445377Application Date: 2007-10-26
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Publication No.: US08403600B2Publication Date: 2013-03-26
- Inventor: Steven Weaver , Darren Webb , John Horsch , Matthew Kenny
- Applicant: Steven Weaver , Darren Webb , John Horsch , Matthew Kenny
- Applicant Address: SE Sandviken
- Assignee: Sandvik Intellectual Property AB
- Current Assignee: Sandvik Intellectual Property AB
- Current Assignee Address: SE Sandviken
- Agency: Morgan, Lewis & Bockius LLP
- Priority: AU2006236010 20061115; AU2006236012 20061115
- International Application: PCT/SE2007/000938 WO 20071026
- International Announcement: WO2008/060212 WO 20080522
- Main IPC: E21D21/00
- IPC: E21D21/00
Abstract:
A drilling tool incorporating first and second ends, a shaft extending between the ends. The first end has a drill bit to penetrate rock. The drill bit and the shaft have complementary threads. The drill bit and the shaft comprise a relative rotation stop means that ensures that the drill bit remains loose during drilling in a first direction. The invention further relates to a self drilling rock bolt, a drill bit, drill shaft and shaft coupling, an anchoring device, and an end coupling per se.
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