Sealing system for an energy efficient window

E - Fixed Constructions – 06 – B

Patent

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Details

E06B 3/663 (2006.01) E06B 3/67 (2006.01)

Patent

CA 2508173

A heat insulation window includes a pair of outer panes (14, 16) defining an interior air space (12) and held apart by a spacing member which as opposed and parallel first and second outer surfaces. A third outer surface extends between the first (21) and second (23) outer surfaces. The spacing member defines a first sealing groove (32)at the junction between the first (21) and third (19) outer surfaces and a second sealing groove (32) at the junction between the second (23) and third (19) outer surfaces. The sealing grooves (32) are filled with a gas-tight seal element. A metal band (34) overlays the third (19) outer surface and has edge flanges (34A, 34B) which fit into the first and second sealing grooves (32), isolating the third (19) outer surface from the seal element.

Cette invention concerne une fenêtre à isolation thermique comprenant une paire de vitres extérieures (14, 16) qui définissent un espace d'air intérieur (12) et qui sont séparées par un élément d'espacement comportant une première et une deuxième surface extérieure opposées et parallèles. Une troisième surface extérieure s'étend entre la première (21) et la deuxième (23) surface extérieure. L'élément d'espacement définit une première rainure d'étanchéité (32) au niveau de l'intersection entre la deuxième (23) et la troisième (19) surface extérieure. Ces rainures d'étanchéité (32) sont remplies d'un élément d'étanchéité étanche au gaz. Une bande de métal (34) chevauche la troisième surface extérieure (19) et comprend des rebords (34A, 34B) qui sont introduits dans les première et deuxième rainures d'étanchéité (32), ce qui isole la troisième surface extérieure (19) de l'élément d'étanchéité.

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