| 摘要 |
<p>PCT No. PCT/GB96/00316 Sec. 371 Date Sep. 10, 1997 Sec. 102(e) Date Sep. 10, 1997 PCT Filed Feb. 14, 1996 PCT Pub. No. WO96/25872 PCT Pub. Date Aug. 29, 1996In a cleaning head (10) of the kind having agitating means (26) engageable with a surface to be cleaned for agitating cleaning liquid thereon, and collecting means (25) for collection of liquid from the surface by suction, the agitating means (26) and collection means (25) are relatively movable such that one or the other is selectively prominently engaged with the surface being cleaned. In a preferred arrangement the agitating means (26) is movable relative to a housing (11) of the cleaning head while the collecting means (25) is fixed in position relative to the housing (11). Cleaning liquid is delivered to the agitating means through a passage (45) which is closed by a pad (70) at the upper side of the agitating means (26) when the latter is in its raised position. Movement of the agitating means (26) between its raised and lowered positions is controlled by means of a foot pedal (65).</p> |
