Dual rod directional drilling system
US10851588B2 · kind B2 · utility
4Cited by
30References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 1, 2018 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Aug 3, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A coupler includes a main body that has an inner bore. The inner bore has a non-circular profile and a longitudinal axis. The coupler includes a cross aperture disposed in the main body. The cross aperture has an axis that is nonintersecting with the longitudinal axis of the main body. The coupler also includes a sleeve that is positioned around an exterior surface of the main body. The sleeve has at least one drilling fluid flow passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.