| Patent Number |
Title Of Patent |
Date Issued |
| 7373998 |
Cutting element with improved cutter to blade transition |
May 20, 2008 |
| Cutting elements having a slanted top surface for an improved cutter to blade transition, the slanted top surface being integratable into a receiving pocket of a bit blade such that the slanted top surface and the perimeter of the receiving pocket are relatively contiguous when the s |
| 7308957 |
Fixed-head bit with stabilizing features |
December 18, 2007 |
| A fixed-head drill bit includes a bit body having a plurality of cutting elements and at least one wear knuckle disposed on the bit body. Each cutting element includes a cutting surface defining a swept cutting profile when the bit is rotated about an axis. The at least one wear knuc |
| 6729418 |
Back reaming tool |
May 4, 2004 |
| A back reaming tool is disclosed which includes a tool body adapted to be coupled to a drill string, and at least one roller cone rotatably mounted to a leg and having cutting elements disposed thereon. The leg is removably coupled to the tool body. The at least one roller cone is open |
| 6116357 |
Rock drill bit with back-reaming protection |
September 12, 2000 |
| A drill bit for boring a bore hole in an earthen formation comprises: a bit body having a pin end, a cutting end and a longitudinal bit axis and including at least two legs extending from the cutting end, each of the legs including a bearing that rotatably supports a cutter cone. The bit |
