Invention Grant
- Patent Title: Device for advancing drillings in the ground
- Patent Title (中): 用于在地面上推进钻孔的装置
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Application No.: US10522483Application Date: 2003-07-18
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Publication No.: US07658244B2Publication Date: 2010-02-09
- Inventor: Michael Mohrmann
- Applicant: Michael Mohrmann
- Applicant Address: DE Erkelenz
- Assignee: Wirth Maschinen-und Bohrgerate-Fabrik GmbH
- Current Assignee: Wirth Maschinen-und Bohrgerate-Fabrik GmbH
- Current Assignee Address: DE Erkelenz
- Agency: Darby & Darby
- Priority: DE10234336 20020726; DE10234337 20020726; DE10234338 20020726; DE10237889 20020819
- International Application: PCT/EP03/07810 WO 20030718
- International Announcement: WO2004/013449 WO 20040212
- Main IPC: E21B10/00
- IPC: E21B10/00

Abstract:
A device for driving boreholes in the ground, having a rotationally driven main shaft with a shaft journal whose axis (B) forms an acute angle with respect to the axis (A) of the main shaft. A drill head is mounted such that it can rotate about the axis (B) of the shaft journal and has a circumferential region which runs on a complementary circumferential region, wherein the complementary circumferential region can be set rotating.
Public/Granted literature
- US20060096784A1 Device for advancing drillings in the ground Public/Granted day:2006-05-11
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