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U.S. Department of Energy
Office of Scientific and Technical Information

Drill bit and method of use thereof

Patent ·
OSTI ID:5289452
The cutting edge of a bit of a rotary drill comprises an agglomerate of natural or synthetic diamond mounted at the free end of a shank freely rotatable in a socket in the body. Preferably the agglomerate and the free end of the shank are cold swaged together and preferably a resilient spring is interposed about the shank between the body and the free end.
Assignee:
EDB-85-153370
Patent Number(s):
US 4511006
OSTI ID:
5289452
Country of Publication:
United States
Language:
English