Earth boring cutting element retention system

Details Earth boring cutting element retention system Earth boring cutting element retention system

E - Fixed Constructions

21

B

255/72

E21B 10/00 (2006.01) E21B 10/52 (2006.01) E21B 10/56 (2006.01)

Patent

CA 1062243

EARTH BORING CUTTING ELEMENT RETENTION SYSTEM Abstract of the Disclosure An earth boring apparatus includes individual cutting elements positioned within corresponding individual sockets in the cutter member body of the apparatus. Each socket has a socket wall and each cutting element has a lower body portion with a surface that contacts the socket wall. In one embodiment the sockets are cylindrical and a substantial portion of the lower body surfaces have a conical taper. This provides an improved fit of the lower body surface along the length of the socket wall and reduces cutting element loss. -1a-

273236

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