Sash window restrictor

E - Fixed Constructions – 05 – B

Patent

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Details

E05B 65/08 (2006.01) E05C 1/10 (2006.01) E05C 7/00 (2006.01) E05B 15/00 (2006.01) E05B 17/00 (2006.01) E05B 19/06 (2006.01) E05B 43/00 (2006.01)

Patent

CA 2728416

A sash window restrictor (20) has a housing (22) which is to be let into a vertical frame member (10) of one sash (normally the upper, outer sash) of a window, at a position, say, 10 cm above the top rail of the lower sash when the windows are closed. A tab (24) is mounted in the housing and can be retracted into the housing or extended from the housing. A mechanism acts between the tab and the housing and allows the tab to be pressed into the housing and held in the housing for a period of time before the tab is released to allow the tab to extend. With the tab extended, the lower sash (12) can be lifted until it reaches the tab (24) but no further, so that a 10 cm gap will be opened at the bottom of the window.

Selon l'invention, un restricteur de fenêtre à guillotine (20) comprend un boîtier (22) devant rester logé dans un élément de châssis vertical (10) d'un cadre (le cadre supérieur externe dans la plupart des cas) d'une fenêtre, à une position, disons, de 10 cm au-dessus du rail supérieur du cadre inférieur lorsque les fenêtres sont fermées. Une languette (24) est montée dans le boîtier, qui peut être rentrée dans le boîtier ou sortie de celui-ci. Un mécanisme agissant entre la languette et le boîtier permet d'enfoncer par pression et de maintenir la languette dans le boîtier pendant un laps de temps avant de la libérer dans l'état sorti. Dans l'état sorti, le cadre inférieur (12) peut être levé jusqu'à la languette (24) mais sans la dépasser, de manière à créer un espace de 10 cm au bas de la fenêtre.

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