Drill bits and methods for sampling sensor data associated with the state of a drill bit are disclosed. A drill bit for drilling a subterranean formation comprises a bit body and a shank. The shank further includes a central bore formed through an inside diameter of the shank and configured for receiving...http://www.google.fr/patents/US7604072?utm_source=gb-gplus-shareBrevet US7604072 - Method and apparatus for collecting drill bit performance data
Method and apparatus for collecting drill bit performance data
