Invention Grant
- Patent Title: Down the hole drilling machine and method for drilling rock
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Application No.: US16617841Application Date: 2018-05-31
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Publication No.: US11028643B2Publication Date: 2021-06-08
- Inventor: Olivier Bruandet
- Applicant: SANDVIK INTELLECTUAL PROPERTY AB
- Applicant Address: SE Sandviken
- Assignee: SANDVIK INTELLECTUAL PROPERTY AB
- Current Assignee: SANDVIK INTELLECTUAL PROPERTY AB
- Current Assignee Address: SE Sandviken
- Agent Corinne R. Gorski
- Priority: EP17174126 20170602
- International Application: PCT/EP2018/064318 WO 20180531
- International Announcement: WO2018/220098 WO 20181206
- Main IPC: E21B1/30
- IPC: E21B1/30 ; E21B1/24 ; E21B1/12 ; E21B1/38 ; E21B4/14 ; E21B1/00 ; E21B7/02 ; E21B21/10
Abstract:
A down the hole rock drilling machine and a method of drilling rock. The drilling machine includes a reciprocating piston, which has a sleeve-like configuration. Inside a central opening of the piston is arranged one or more fluid passages for conveying pressurized fluid during the work cycle of an impact device of the drill machine.
Information query
