WEAR RESISTANT PLATES ON A LEADING TRANSITIONAL SURFACE OF THE LEG FOR A ROTARY CONE DRILL BIT

摘要

In an embodiment, a rotary cone drill bit comprises: a body, a leg depending from the body, a bearing shaft extending from the leg and a cone mounted to the bearing shaft. The leg includes a leading transitional surface. A bottom surface of a hard material plate is attached to a substantially conforming surface of the leg in a position where the hard material plate is disposed on a floor surface formed in or by the leading transitional surface of the leg.

主权项

1. A rotary cone drill bit, comprising:
a body; a leg depending from the body, wherein the leg includes a shirttail surface, a leading side surface, and a leading transitional surface disposed therebetween; a bearing shaft extending from the leg; a cone mounted to the bearing shaft; a preformed hard material plate having a bottom surface; and an adhesive material attaching the bottom surface of the hard material plate to a substantially conforming surface formed in or by the leading transitional surface.