Patent ID: 7434292

Claim:
An automatic roller wringer for a mop, the automatic roller wringer comprising: an external casing comprising: a front, central hollow area, configured for being adapted on a bucket; and a rear area of the external casing on which is disposed a switch and a charging connection for connecting a battery charger; at least one motor configured to drive a plurality of gears incorporated inside the external casing, the at least one motor being fed from a circuit comprising at least one battery or accumulator accessible by an access door on the rear area of the external casing; two asymmetrical arms on each side of the hollow area operatively coupled to the at least one motor by the plurality of gears; and first and second transversal rollers arranged in the hollow area, the second transversal roller coupled to the asymmetrical arms and shifting until coinciding with the first transversal roller by means of two projecting lugs connected to the arms, the lugs resting on two parallel guides arranged on opposing inner faces on either side of the hollow area, the first transversal roller rotating but remaining fixed at a point in which it is located relative to the parallel guides.