Cavitating liquid jet assisted drill bit and method for deep-hole drilling
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United States of America Patent
Stats
-
Apr 21, 1981
Grant Date -
N/A
app pub date -
Aug 4, 1978
filing date -
Aug 4, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drill bit and a method for deep-hole drilling in which the drill bit has mechanical cutting means located on its lower cutting face for cutting a solid surface upon rotation of the bit and a plurality of cavitating liquid jet nozzles spaced around the face of the bit to assist in the drilling action, the nozzles being located so as to discharge a plurality of downwardly directed and concentric liquid jets that cavitate to fracture the surface to be drilled in a series of non-overlapping slots as the bit is rotated.
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Cited Art Landscape
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