Rock drilling tool with improved conveying
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United States of America Patent
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Aug 6, 2002
Grant Date -
N/A
app pub date -
Aug 8, 2000
filing date -
Dec 4, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention proposes a drilling tool, in particular rock-drilling tool for rotary and/or percussive operation, in which, for the purpose of improving the drilling properties, the drilling-dust discharge groove is subdivided into at least two discharge-groove sections, each section having its own drilling-dust-carrying surface.
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