Rock drill
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United States of America Patent
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-
Apr 4, 1995
Grant Date -
N/A
app pub date -
Oct 29, 1993
filing date -
Oct 29, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A drilling tool and, in particular, a rock drill for the creation of breaches in concrete or masonry for the use of drill hammers is proposed, which is configured as a cross drill bit having four cutting fins. In order to optimize drilling capacity, the drilling tool is provided with a cross drilling head which merges in one piece into a conveyor spiral matched to the drill head. A purpose-specific cutting element facing serves to optimize the drilling capacity.
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