Manufacturing methods for high shear roller cone bits
US8955413B2 · kind B2 · utility
3Cited by
84References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2010 |
| Grant date | Feb 17, 2015 |
| Priority date | — |
| Expiry date | Jun 21, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/50
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of manufacturing a roller cone drill bit may include forming a body of a single piece having an upper end and a lower end; machining at the lower end of the body at least two journals extending downward and radially outward from a central axis of the body; machining at least one of a ball passage, a hydraulic fluid passageway, a grease reservoir, and a lubricant passageway; and mounting roller cones on the at least two journals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.