Device for drilling a bore in the ground
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United States of America Patent
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-
Jul 21, 2009
Grant Date -
Feb 28, 2008
app pub date -
May 7, 2004
filing date -
May 13, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention relates to a device for drilling a bore in the ground, comprising a drive system with a connecting rod assembly that extends from the drive system into the ground. The end of said assembly pointing towards the face or base of the bore is connected to a tool head (40). The device also comprises several tools (41) that are located on the tool head (40) and work on the face or the base of the bore. The inventive device is characterised in that each tool (41) comprises an excavation disc (45) and elements that cause the excavation disc (45) to oscillate during operation.
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Cited Art Landscape
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