Threaded connection for double-walled pipes
US10006578B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 23, 2014 |
| Grant date | Jun 26, 2018 |
| Priority date | — |
| Expiry date | Jan 6, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L41/008
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A threaded connection for double-walled pipes, including an outer pipe, an inner pipe including an outward projection having a threaded conical end, a component connector having a threaded conical end threaded with the outward projection threaded conical end to provide a first threaded connection. The connector having an annular groove and a sealing ring. The threaded connection additionally including an intermediate piece with an inner threaded surface threaded with an outward projection outer threaded surface to provide a second threaded connection configured to turn in an opposite direction with respect to the first threaded connection. The intermediate piece also having a pressing surface that presses the sealing ring against the connector, and a sliding joint engaged with an outer pipe outward projection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.