| 摘要 |
The device features at least one rod grid (14) with parallel rods for supporting the mattress, and a brush wagon (2), which moves along the rods. A roller brush (3) is located across the rods and is driven rotatingly. The bristles of the roller brush penetrate the rod grid in the direction of the mattress. Another rod grid (15) with an associated roller brush (4) is provided at a right angle to the first one for the vertical mattress surfaces.
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