Conical inserts for rolling cone rock bits

Details Conical inserts for rolling cone rock bits Conical inserts for rolling cone rock bits

E - Fixed Constructions

21

B

E21B 10/06 (2006.01) E21B 10/52 (2006.01) E21B 10/56 (2006.01)

Patent

CA 2143350

A conical insert is disclosed having a cutting tip which includes a spherically shaped apex and a substantially conical surface therebelow. The trailing side of the cutting tip is convex as seen in a longitudinal section taken normal to the apex. The leading side of the cutting tip is either a straight line segment or is concave as seen in the longitudinal section taken normal to the apex.

Pièce rapportée conique constituée d'une pointe de coupe présentant un sommet sphérique et, sous celle-ci, d'une surface essentiellement conique. Le côté de traînée de la pointe de coupe est convexe tel que vu en section longitudinale à la normale au sommet. Le côté d'entraînement de la pointe de coupe s'avère un segment en ligne droite, ou est concave tel que vu en section longitudinale à la normale au sommet.

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