Rod coupler and coupled rod assembly
US11149501B2 · kind B2 · utility
2Cited by
36References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2020 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Apr 16, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/18
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A coupler for a drill rod includes a body defining an inner bore extending along a longitudinal axis, at least a portion of the inner bore defining a non-circular profile having a plurality of flats including a first pair of adjacent flats defining a vertex therebetween. A cross aperture of the body has a central axis that is perpendicular to and offset from the longitudinal axis. A radially-innermost portion of the cross aperture extends perpendicular to a reference line extending from the longitudinal axis to the vertex.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.