Vacuum-insulated pipe
US7093619B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 24, 2003 |
| Grant date | Aug 22, 2006 |
| Priority date | — |
| Expiry date | Mar 24, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L59/065
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
To provide a thermal insulation piping with no radially projecting part from a periphery thereof, so as to facilitate insertion of the thermal insulation piping into a pipeline or equivalent. In a thermal insulation tube 10 having a vacuum layer between an inner tube 11 and an outer tube 12, an evacuation port 30 for vacuum evacuation is oriented parallel with a longitudinal direction of the thermal insulation piping at an end of the thermal insulation tube 10. This construction can produce the thermal insulation tube 10 with no radially projecting part from a periphery thereof, thus providing improved workability when the thermal insulation piping is contained in the pipeline or equivalent. Further, a flexible pipe(s) 40 is/are preferably connected to the evacuation port(s) 30. This can allow increased positional tolerances in the connection of the evacuation port(s) to a vacuum evacuation device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.