Earth penetrating rotary drill bit with helical ports
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United States of America Patent
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-
Jul 12, 2005
Grant Date -
Dec 30, 2004
app pub date -
Jun 30, 2003
filing date -
Jun 30, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A drill bit that has a drill bit body with a side wall and opposite ends. A distal one of the opposite ends of the drill bit body receives a cutting insert. The drill bit body contains at least two helical debris ports in the side wall thereof. The drill bit body further contains a helical scallop that corresponds to each one of the helical debris ports. Each one of the helical scallops surrounds so as to define the periphery of its corresponding one of the helical debris ports.
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