| 摘要 |
<p>A circulation area (1) formed by plate-like cover elements (3a, 3b) laid so as to adjoin one another. In the mutually facing edges (4a, 4b) of mutually adjacent cover elements (3a, 3b), recesses (7a, 7b, 7c, 7d) are provided, which extend into the cover elements parallel to the surface extension of the cover elements from said edges (4a, 4b). Oppositely disposed recesses (7a, 7b, 7c, 7d) are aligned with each another. Alignment bars are each movably mounted in one of two mutually aligned recesses and partially movable into the other of the two aligned recesses by the aid of an adjustment shaft (8a, 8b) so as to engage with both of the mutually aligned recesses (7a, 7b, 7c, 7d), while bridging the separation (9) present between adjacent cover elements (3a, 3b).</p> |
