| 摘要 |
PCT No. PCT/GB97/00401 Sec. 371 Date Aug. 17, 1998 Sec. 102(e) Date Aug. 17, 1998 PCT Filed Feb. 13, 1997 PCT Pub. No. WO97/29675 PCT Pub. Date Aug. 21, 1997A cleaning head includes an applicator for applying cleaning liquid to a surface to be cleaned and an air passage for collecting liquid from the surface, enabling the head to be operated in wet mode in which liquid is applied to, and picked up from, the surface. The head also includes a cover adapted to be removably assembled with the cleaning head and which, when in place, effectively encloses the applicator while maintaining communication between the surface and the air passage, thereby enabling the head to be operated in a dry mode to pick up solid matter from the surface. |
