Patent ID: 9441422
Filing Date: 2016-09-13
CPC Classification: E21B

Claim Text:
1. A cutting insert for a rotary rock drill bit comprising: a cutting edge; and a face extending from the cutting edge; wherein the face includes two opposing concave regions that define an elongated ridge therebetween and a back-support region; wherein said ridge has a first end proximal the cutting edge and a second end distal the cutting edge, wherein said ridge extends across a substantial portion of said face, wherein the first end of said ridge is positioned a distance from said cutting edge and points towards said cutting edge, and wherein the second end of said ridge intersects the back-support region; wherein the back-support region is positioned on the face opposite the cutting edge and is oriented substantially perpendicular to the ridge; wherein the ridge extends to a height that increases moving from the first end to the back-support region.