Conducting tube
US4984605A · kind A · utility
19Cited by
9References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 23, 1989 |
| Grant date | Jan 15, 1991 |
| Priority date | — |
| Expiry date | Jan 23, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L59/08
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Two concentric corrugated metal tubes have a space therebetween in which there is arranged a superinsulation layer. Between the inner tube and the superinsulation layer there is located a helical spacer to ensure an annular channel to facilitate the evacuation of the space between the corrugated tubes. The spacer is formed of interlaced strands to reduce heat conduction therethrough.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.