| 摘要 |
<p>Aeration device with a rotatable and detachable closure element (3), which device comprises a grating (1) with two elongate elements (12, 13), between which an opening (2) is formed, and with two end pieces (14) via which the elements (12, 13) are connected. The end pieces (14) of the grating (1) each comprise at least two parts, namely a fixed part (29) which is connected to the elongate elements (12, 13) of the grating (1) and which forms a part of the abovementioned guidance system (21) on 180 DEG maximum on the side of the shaft section (7) concerned opposite the abovementioned external side of the grating (1) and is equipped on the side of this shaft section (7) facing the abovementioned external side of the grating (1) with a passage for this shaft section (7), and a removable part (30) which forms on this last-mentioned side of the shaft section (7) a complementary part (32) of the guidance system and in that way holds (21) the shaft section (7) in its place, while means (37-40) are provided to block this removable part (30) with regard to the fixed part (29). <IMAGE></p> |
