Earth boring drill bit with snap ring cutter retention
Floating seal for earth boring bit
Friction bearing and cone retention thrust system for a rock bit
Friction bearing assembly having a series of rings constituting
Friction bearing couple
Hardened bearing surface and method of forming same
Lubricant system for a rotary cone rock bit
Lubricant system for a rotary cone rock bit
Means of mounting a revolving cutting element
Micropore engagement surfaces for earth boring bit
Opposed button thrust surfaces for earth boring bits
Precision roller bearing rock bits
Resilient bearing seal with ability to compensate for wear and c
Rock bit bearing material
Rock bit bearing pressure equalization system
Rock bit cone retention
Rock bit cone retention means
Rock bit cutter retainer with differentially pitched threads
Roller bit
Roller cutter drill bit having a texturized seal member