Rock bit with an extended center jet
Rock bit with cavitating jet nozzles
Rock bit with enhanced fluid return area
Rock bit with extended pickup tube
Rock bit with hardfacing material incorporating spherical cast c
Rock bit with hydraulic configuration
Rock bit with improved extended nozzle
Rock bit with improved gage insert
Rock bit with improved shank protection
Rock bit with improved shirttail ventilation
Rock bit with improved thrust face
Rock bit with load stabilizing cutting structure
Rock bit with mechanical seal
Rock bit with reaming rows
Rock bit with rigid face seals and recessed energizers
Rock bit with specially shaped inserts
Rock bit with wear-and fracture-resistant hardfacing
Rock bits having metallurgically bonded cutter inserts
Rock boring apparatus
Rock boring bit with novel teeth and geometry