<p>An earth boring drill bit comprising cones, each cone having rows of inserts, where the inserts are in the form of a pyramid with four sides. The insert includes ridges at the juncture of each adjacent side. The ridges extend to the top of the insert and meet at a crest. Oppositely disposed ridges on the insert lie substantially in the same plane, thereby forming two planes intersecting on the crest. The two planes are substantially perpendicular. The inserts are arranged on the cone such that one plane is substantially parallel with the insert row, and the other is substantially parallel with the cone axis.</p>
申请公布号
WO2009086302(A2)
申请公布日期
2009.07.09
申请号
WO2008US88014
申请日期
2008.12.22
申请人
BAKER HUGHES INCORPORATED;PESSIER, ROLF CARL;FELDERHOFF, FLOYD;BUSKE, ROBERT J.
发明人
PESSIER, ROLF CARL;FELDERHOFF, FLOYD;BUSKE, ROBERT J.