F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 11/08 (2006.01) F16L 11/00 (2006.01)
Patent
CA 2673027
A free venting pipe and method of forming same, comprising a permeable tubular core member with at least one permeable hoop reinforcement layer around the core member; a substantially non- permeable membrane layer positioned outside of the hoop reinforcement layer and at least one permeable tensile reinforcement layer positioned outside of the membrane layer whereby a free volume annulus does not exist between any of the layers of the free venting pipe. The hoop and tensile reinforcement layers are comprised of a laminate construction.
La présente invention concerne une canalisation d'aération mobile et son procédé de fabrication, comprenant un élément tubulaire central perméable doté d'au moins une couche d'arche de renforcement perméable entourant l'élément central, une couche de membrane substantiellement non perméable placée à l'extérieur de la couche d'arche de renforcement et au moins une couche perméable d'armature tendue placée à l'extérieur de la couche de membrane où le volume d'une couronne circulaire mobile n'existe pas entre aucune des couches de la canalisation d'aération mobile. Les couches d'arche et d'armature tendue sont formées d'une construction stratifiée.
Borden Ladner Gervais Llp
Deepflex Inc.
LandOfFree
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