Composite cushion with compression modulated valve and valve...

F - Mech Eng,Light,Heat,Weapons – 16 – K

Patent

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Details

F16K 15/14 (2006.01) A47C 27/08 (2006.01)

Patent

CA 2663647

Valve assemblies optionally with inflatable bodies for modulating fluid expulsion from an inflatable body, without active user participation. Valve assemblies include, in separate components or in integrated form, a vent body defining an external orifice, an internal orifice in fluid communication with the external orifice, and an inflatable body interface. Extending from the internal orifice is a collapsible, hollow elongate member defining longitudinal and lateral axes. Sealing closure of the elongate member, which is preferably constructed from a resilient material, results from application of generally opposing mechanical forces across a lateral surface of the elongate member. Compression localizing members may be used proximate to the elongate member to increase closure performance. In addition, performance parameters can be varied by modifying the physical characteristics of the compression members (height, upper surface area, lower surface area, composition, density, use of localizing ridges, etc.) as well as locations of the compression members (proximity to other compression members, distribution relative to the cushion geometry, etc.).

L'invention porte sur une valve pouvant se monter sur des articles gonflables pour moduler l'expulsion du fluide y étant contenu sans participation active de l'utilisateur. La valve comporte sous forme d'éléments séparés ou intégrés: un corps d'évent constituant un orifice de sortie; un orifice intérieur communiquant avec l'orifice extérieur; une interface de corps gonflable; un élément creux allongé aplatissable s'étendant à partir de l'orifice intérieur et comportant des axes longitudinaux et latéraux; une fermeture étanche de l'élément allongé de préférence de matériau élastique résultant de l'application de forces mécaniques sensiblement opposées sur une surface latérale de l'élément allongé; et éventuellement des éléments de localisation de la compression voisins de l'élément allongé et renforçant l'efficacité de la fermeture. On peut par ailleurs faire varier les paramètres de la fermeture en modifiant les caractéristiques physiques des éléments de compression (hauteur, taille surface supérieure, taille surface inférieure, composition, densité, nervures de localisation, etc.), ainsi que la position des éléments de compression (proximité des autres éléments de compression, distribution par rapport à la géométrie du coussin, etc.).

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