Revolving cutters for rock bits

Details Revolving cutters for rock bits Revolving cutters for rock bits

E - Fixed Constructions

21

B

255/72

E21B 10/50 (2006.01) E21B 10/52 (2006.01) E21B 10/56 (2006.01) E21B 10/62 (2006.01)

Patent

CA 1260923

REVOLVING CUTTERS FOR ROCK BITS ABSTRACT OF THE DISCLOSURE A mechanism is disclosed for rock bits whereby cutting elements, rotatably mounted to fixtures with journals, are constantly forced to rotate or precess by the interaction of the earth formation and the cutter. The cutters are fixed in skewed or offset positions on a cutting face of a rotary drill bit head. These cutting elements act as drag or shear cutters when they are operated in an earth forma- tion.

531987

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