Shutter or window opening and closing mechanism with two articulated levers has pivot fitted with lock that allows shutter to be fixed in at least five positions

摘要

The opening and closing mechanism, comprising two levers (1, 2) connected at one end by a pivot (3), has the latter fitted with a lock that enables the shutter or window (15) to be fixed in at least five different angular positions. The other end of each lever is pivoted to a right-angled bracket on the shutter/window or wall (14), with the pivot axes parallel to that of the pivot connecting the levers. The different angular positions are set by stops formed by a plate with balls between the pivoted ends of the two levers, which have corresponding recesses in their facing surfaces. The locking force is provided by a standard handle (11).