Two-layered injection molded field joint for pipeline applications
US10105885B2 · kind B2 · utility
2Cited by
1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2016 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Nov 17, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2023/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of coating a field joint and a coated field joint formed thereby. The field joint coating includes a first thermal insulation material injection molded over the uncoated field joint to form a first layer, and a second thermal insulation material injection molded over the first layer to form a second layer. The second material has a greater flexibility than the first material and a lower maximum operating temperature than the first material. In certain embodiments, the second material forms a significant part of the volume of the field joint coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.