| 摘要 |
The device has a bearer tube (2) with one end region for connection to a vacuum cleaner suction pipe and a duster element (6) mounted on the other end region so as to protrude beyond it. The other end region of the bearer tube is conical and open towards the end with the protruding element, which is held inside the cone by an arrangement so that an essentially annular gap is formed between the duster element and the wall of the cone. |
