A floor washing mop has a rigid base carrying fixed scrubbing members on the bottom surface. The scrubbing members may be stiff flexible bristles or rigid elastomeric rails. A rabbet is formed at each side of the base stepped down from the upper surface of the base and a groove is stepped down from the...http://www.google.fr/patents/US5410772?utm_source=gb-gplus-shareBrevet US5410772 - Floor washing mop
