초록 ▼

This invention is related to ultra-light conduit for used air and a method for construction of such a conduit with sandwich sheet type of material such as "THERMO-FOIL.TM." permitting to avoid losses of heat and humid air. The method of construction of a used air rectangular conduit includes the fol

This invention is related to ultra-light conduit for used air and a method for construction of such a conduit with sandwich sheet type of material such as "THERMO-FOIL.TM." permitting to avoid losses of heat and humid air. The method of construction of a used air rectangular conduit includes the following five (5) steps: 1) cutting of a sandwich sheet 2) sealing around the sandwich sheet 3) heat formation of lengthwise channels on the surface of sandwich sheet 4) assembling the sandwich sheet into a conduit of a predetermined length and 5) installing a lengthwise vertical reinforcement into the conduit and providing a male adaptor to a fore end of the conduit which could be adapted to an aft end of a joining conduit.

대표청구항 ▼

[ What is claimed is:] [1.]1. An air duct comprising:one or more segments, each segment disposed longitudinally relatively to a major axis parallel to an air flow, each segment comprising a wall defining an internal space that permits flow of said air, said wall being uniformly thick and made of a s

[ What is claimed is:] [1.]1. An air duct comprising:one or more segments, each segment disposed longitudinally relatively to a major axis parallel to an air flow, each segment comprising a wall defining an internal space that permits flow of said air, said wall being uniformly thick and made of a sandwich material comprising air cells contained between a first external film and a second internal film, said second internal film coinciding with the internal space,each said segment comprising an upstream end and a downstream end, said upstream end and said downstream end being opened, each segment comprising means for coupling fitted at one of said ends to join a segment to another segments,wherein said wall forms a parallelepiped with a rectangular section comprising a top, a closed side, a bottom, an opened side, and at least three longitudinal lines for folding of which one demarcating a first limit, between said top and said closed side, another demarcating a second limit between said closed side and said bottom, and a third demarcating a third limit, between said bottom and said opened side, said parallelepiped comprising means for reinforcement orientated along said major axis, touching said top and bottom.