Drill bit
US11480016B2 · kind B2 · utility
1Cited by
38References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2019 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Nov 7, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/55
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drill bit including a body having a face and a plurality of blades disposed on the face of the body. Each of the plurality of blades may have a row of cutters disposed thereon, and the rows of cutters may collectively define a cutting profile of the drill bit. At least some of the cutters along the cutting profile may have alternating positive back rake angles. The difference between a majority of back rake angles on adjacent cutters along the cutting profile may be less than 20°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.