Slit-type ventilation device for windows, doors or the like as well as a window, door or the like incorporating such ventilation device

摘要

Air- ventilating device has a bracing arm (7) which can rotate about an axis running vertical to the frame folding surface (17) on a fixed frame (18) using a guide (19) and can slide in the folding or peripheral direction (5). The bracing arm is coupled to the wings (3) using a connecting rod (6). An air- ventilating element (13) can be moved via the connecting rod relative to the air-ventilating element (8). Preferred Features: One of the air-ventilating elements has a number of gears for the other air-ventilating element.