Steered-head ram drilling tool
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United States of America Patent
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Mar 5, 2002
Grant Date -
N/A
app pub date -
Dec 21, 1999
filing date -
Dec 22, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
In a ram drilling tool having a steering element, for example a steering head, which is mounted in the tool casing such that it can move, for example rotate, the tool casing is connected to a pressure-medium line such that it cannot rotate and to a sleeve pipe such that it can rotate; it may therefore be adjusted with low friction by means of rotation with the aid of the pressure-medium line with respect to the steering element, which is firmly held by the ground.
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