Coupling for junction of pipe-in-pipe pipeline
US12270494B2 · kind B2 · utility
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1References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2021 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Mar 23, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/00689
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A coupling for pipe-in-pipe pipeline tubing formed of an assembly of sections each incorporating an inner pipe and an outer pipe butt-welded to the inner pipe, two successive sections being joined together by the welding of respective inner pipes delimiting a segment of inner pipe. The coupling is formed by a sleeve arranged perpendicularly to the segment and a filler material constituted by a quick-set mortar based on aluminous cement and sand, the filler material being arranged in the free space delimited by the sleeve, the segment and the outer pipes of two successive sections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.