Multi-chamber air distribution support surface product and...

A - Human Necessities – 47 – C

Patent

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Details

A47C 21/04 (2006.01) A47C 7/74 (2006.01) A47C 27/08 (2006.01) A47C 27/18 (2006.01) A61G 7/057 (2006.01)

Patent

CA 2667779

An air distribution support surface product includes a vapor permeable material such as a sheet of breathable material, a fluid resistant material, such as a sheet of waterproof material and an intermediate fluid passing material interposed between the vapor permeable material and the fluid resistant material to form a plurality of chambers. One of the chambers serves as a type of fluid retention chamber and another chamber serves as a type of fluid loss chamber. A fluid intake opening may be provided to allow fluid, such as air, to inflate the chambers. In one example, both of the chambers share the intermediate fluid passing material. As such, the fluid retention chamber is formed by the fluid resistant material and the intermediate fluid passing material. The fluid loss chamber is formed by the vapor permeable material and the intermediate fluid passing material.

La présente invention concerne un produit de surface pour support de distribution d'air qui comprend un matériau perméable à la vapeur, telle une feuille de matériau respirant, un matériau résistant au fluide, telle une feuille en matériau hydrophobe, et un matériau intermédiaire laissant passer le fluide disposé entre le matériau perméable à la vapeur et le matériau résistant au fluide afin de former une pluralité de chambres. L'une des chambres sert de chambre de rétention de fluide et une autre de chambre de perte de fluide. Une ouverture d'entrée de fluide peut être prévue afin de permettre au fluide, tel l'air, de gonfler les chambres. Dans un exemple, les deux chambres partagent le matériau intermédiaire laissant passer le fluide. En tant que telle, la chambre de rétention de fluide est formée par le matériau résistant au fluide et le matériau intermédiaire laissant passer le fluide. La chambre de perte de fluide est formée par le matériau perméable à la vapeur et le matériau intermédiaire laissant passer le fluide.

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