| 摘要 |
The agitator has brush strips and short beater bars, in which the beater bars and brush strips each extend spirally around the agitator. The direction of the spirals are all the same on one side of an intermediate portion along the length of the agitator, but opposite to all those on the other side of the intermediate portion. When the agitator is mounted on a suction cleaner and is rotated, the action of the brushes and beater bars tends to move any dirt towards the intermediate portion in a direction transverse to the direction in which the agitator rotates. |
