| 摘要 |
A window assembly has a movable leaf (14) coupled to a fixed frame (12) to allow the moveable leaf (14) to be swung open and closed. A spigot (40) is arranged on the movable leaf (14) and a socket (42) on the fixed frame (12), which interengage when the window is closed. The spigot (40) and socket (42) have complimentary engagement formations, preferably in the form of a projection (47) on the spigot which engages with an edge of an aperture (61) in the wall of the socket (42). Such an arrangement locks the spigot (40) to the socket (42) should an attempt be made to force the leaf (14) away from the frame (12) transverse to the normal closing path. |
