Arrangement for guiding a bore-crown or bit along a given path
Patent
·
OSTI ID:6569855
An arrangement for guiding a drill crown or bit in a given drilling path comprises an outer guide tube in which a shaft is rotatably arranged. The shaft is driven by a drive means connected to one end of the shaft, while the bit is mounted for rotation on and guided by the other end of said shaft. The axis of rotation of the bit forms an angle (Alpha) with the central axis of the guide tube, said tube being non-rotatably, but axially displaceably connected to an axially feeding device through intermediate means.
- Assignee:
- IFI; EDB-81-051823
- Patent Number(s):
- US 4240512
- OSTI ID:
- 6569855
- Country of Publication:
- United States
- Language:
- English
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