Window assembly with safety catch for vertically sliding sash

Details Window assembly with safety catch for vertically sliding sash Window assembly with safety catch for vertically sliding sash

E - Fixed Constructions

05

F

E05F 3/00 (2006.01) E05D 13/00 (2006.01)

Patent

CA 2158772

A window assembly with a safety catch comprises a manually movable window sash which normally slides between a raised and a fully lowered position within a surrounding window frame. A weight is connected to the sash by a cable which counter-balances weight of the sash. The safety catch prevents downward falling of the sash to the fully lowered position in the event of breakage of the cable. The safety catch comprises a sash block spaced below the weight and clear of the sash when the cable is intact and the weight is positioned to fall if released from the sash to move the sash block to a blocking position which holds the sash above its fully lowered position.

La présente invention a pour objet un ensemble de fenêtre avec cran de sûreté comportant un châssis mobile qui normalement coulisse entre une position relevée et une position abaissée à l'intérieur d'un cadre de fenêtre. Un poids est relié au châssis par l'intermédiaire d'un câble pour contre-balancer le poids du châssis. Le cran de sûreté est constitué d'un bloc de jambage qui est positionné en-dessous du poids et qui est maintenu à une certaine distance du châssis tant que le câble est intact; le poids est positionné de manière à retomber sur le bloc de jambage en cas de séparation du châssis, auquel cas le bloc de jambage est déplacé vers une position de blocage dans laquelle il empêche le châssis de tomber en position complètement fermée.

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