Ventilation tubing in particular for an airconditioning system
AssigneeEspa
InventorsManuel Nogueira, Patrick Dupont, Etienne Bruet
Life of this patent
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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.
Claims13
Ventilation tubing comprising, as seen from the inside to the outside, a bush, an insulating layer and a cover sheet characterized in that the insulating layer is a quartz-fiber wool, the thickness of said quartz fiber wool is between 6 and 15 mm and said quartz-fiber wool exhibiting a specific surface weight between 65 and 150 g/m2, wherein the bush (1) and the cover sheet (3) is a plastic sheet having a weave of interlaced filaments and wherein the specific surface weight of said plastic sheet is substantially between 30 and 65 g/m2 and its thickness is substantially between 10 and 15μ (microns).
Ventilation tubing comprising, as seen from the inside to the outside, a bush, an insulating layer and a cover sheet characterized in that the insulating layer is a quartz-fiber wool, wherein the bush (1) and the cover sheet (3) is a plastic sheet having a weave of interlaced filaments, characterized in that it comprises a plastic winding (5, 6, 7) helically enclosing the bush and bonded to it by a flame-resistant adhesive, and the winding (7) exhibits a specific cross-sectional geometry of which a substantially planar base (8, 11) makes contact with the bush.
Dependencies are inferred from the claim text.