Patent ID: 9334730
Filing Date: 2016-05-10
CPC Classification: E21B,E21C

Claim Text:
1. A tip for a pick tool, comprising an impact structure formed joined at a non-planar boundary surface of a substrate comprising cemented carbide material; the boundary surface including a depression and comprising a ridge at the periphery of the depression and an intermediate region between the ridge and a peripheral edge of the substrate, the intermediate region depending away from the ridge; the impact structure comprising polycrystalline diamond (PCD) material and a working end having a rounded conical shape, including an apex opposite the depression; a lowest point of the depression being directly opposite the apex, the apex and the lowest point of the depression directly opposite the apex defining a longitudinal axis passing through both; the apex defining a radius of curvature in a longitudinal plane of at least 1.5 millimeters; and the depression defining a radius of curvature in the longitudinal plane of at least 0.5 millimeter, and having a depth of 0.1 to 2 millimeters, measured as the longitudinal distance between a highest point on the ridge and the lowest point of the depression.