Tubular coupling
US9970576B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2017 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | May 19, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/042
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A tubular connection, method for connecting tubulars, and a coupler for connecting together tubulars, of which the tubular connection includes an inner body including a bore, external threads, a tapered torque nose, and a radially-facing sealing surface. The connection also includes an outer body including a bore in communication with the bore of the inner body, internal threads configured to engage the external threads of the inner body, a tapered torque-stop surface that engages the tapered torque nose, and a radially-facing sealing surface that forms a seal with the radially-facing sealing surface of the inner body. The external threads, the internal threads, or both include at least one kick-out feature including at least one rounded or chamfered corner thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.