Rock drill bit assembly
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United States of America Patent
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-
Nov 4, 2008
Grant Date -
Aug 2, 2007
app pub date -
Apr 7, 2004
filing date -
Apr 22, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drill bit assembly for direct removal of rock with a rotatable bit assembly (5) that includes a plurality of cutters or choppers (7). According to the invention, an number of cutters (7) are so disposed in relation to each other or the bit assembly (5) that a subsequent cutter (7b), seen in the direction of rotation, will engage an edge created by the action of preceding cutter (7a).
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Family
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Cited Art Landscape
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