| 摘要 |
A device and a method for cleaning surfaces in a pool are disclosed. The device comprises at least two rotatable brush means (18), which are mounted on a floating body (4) equipped with propelling means. The floating body (4) is so placed on the surface of liquid in the pool that the brush means (18) make contact with the surface (34) to be cleaned. The propelling means produce the necessary engagement pressure between the brush means (18) and the surface (34) to be cleaned. |
