Ventilation tubing in particular for an airconditioning system
US7509980B2 · kind B2 · utility
0Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2003 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Apr 24, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1372
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The present invention relates to ventilation tubing comprising, from the inside to the outside, a bush (1), an insulating layer (2) and a cover sheet (3). Said ventilation tubing is characterized in that the insulating layer is a quartz fiber wool of which the specific surface weight illustratively is between 65 and 140 g/m2. The bush (1) and/or the cover sheet (3) may be a plastic sheet exhibiting a weave of interlacing filaments.In particular the present invention applies to aircraft ventilation circuit tubings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.