Patent ID: 7874384

Claim:
An in-ground, core drill bit for retrieving a core sample, comprising: a shank portion having a first end for attaching to a drill rod, an opposing second end, and a central axis therethrough, said shank portion defining an interior space about said central axis for receiving the core sample; and a cutting portion secured to and extending axially away from said second end of said shank portion, said cutting portion having an inner surface, and outer surface, and a cutting face, wherein said cutting portion includes a crown height of about 2 inches to about 6 inches, said cutting portion comprising at least one enclosed fluid slot positioned within said crown, said at least one enclosed fluid slot extending from said inner surface to said outer surface, and at least one outer flute extending at least partially into said outer surface, said at least one outer flute extending axially from said at least one enclosed fluid slot to said shank portion.