Compact for earth boring bit with asymmetrical flanks and shoulders
US7152703B2 · kind B2 · utility
38Cited by
20References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 2004 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Jan 29, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/52
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tungsten carbide compact of an earth boring bit has a cutting tip that is generally chisel-shaped with substantially flat flanks converging to an elongated crest. One of the flanks is smaller and has a greater included angle relative to the axis of the compact than the other flank. Shoulders extend from opposite ends of the crest. One shoulder has a radius of curvature that is smaller than the other shoulder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.