Insulated tubing
US6349748B1 · kind B1 · utility
5Cited by
11References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2000 |
| Grant date | Feb 26, 2002 |
| Priority date | — |
| Expiry date | Mar 29, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L59/135
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An insulated tubing is disclosed having a liner, a pipe surrounding the liner defining an annulus between the pipe and the liner, a plurality of sets of spacers, and an insulating material located between the liner and pipe, substantially filling the annulus. The spacers within a set of spacers are spaced apart from each other around the circumference of the liner and each set of spacers is spaced apart from each other set along the length of the liner. A method for producing the insulated tubing is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.