Breakable washer earth boring bit

Details Breakable washer earth boring bit Breakable washer earth boring bit

E - Fixed Constructions

21

B

E21B 10/08 (2006.01)

Patent

CA 2411548

A drill bit is assembled to the makeup end of a drill string by means of a breakable washer comprising a ring-shaped body having an inner diameter and an outer diameter. A radially extending first surface of the ring-shaped body is planar and substantially perpendicular to a centerline axis through the body. A second radially extending surface has an angle with reference to the first surface that results in a radially diverging configuration.

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