Expanded coverage carbide compact
US7011169B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 10, 2003 |
| Grant date | Mar 14, 2006 |
| Priority date | — |
| Expiry date | Feb 28, 2024 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/52
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drill bit with rolling cone cutters for drilling a borehole in an earthen formation. The bit has a bit body, at least one leg depending from the bit body, a rolling cone rotatably mounted on the leg, the cone having a plurality of adjacent rows of cutters thereupon, at least one hole formed within the cone, the hole having a cylindrical wall, and a cutting element partially disposed within the hole, the cutting element having a cylindrical base which fits within the cylindrical wall of said hole, a shoulder which extends outward from the base of the cutting element, and an exposed cutting end extending from the shoulder, the cutting end being substantially symmetrical about a longitudinal axis of the cutting element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.