Abstract: A multipurpose tool for cleaning machines, having a body that is interchangeably associable with a cleaning machine provided with an electric motor; the body is movable on wheels and a front advancement part thereof is arranged transversely to a main direction of motion so as to form a housing that is open downward and accommodates a bristled roller that is moved, by virtue of transmission elements, by an electric motor accommodated within the body; the body is articulated to a coupling element that is suitable to provide a detachable connection to the machine with a dirt suction duct. The tool further includes a pair of interchangeable covers that are selectively detachably associable below the housing at an open region where the roller is located, each of the covers having at least one suction slot and elements for closing the region to the rear of the roller between the housing and the floor.

Abstract: A tubular extension, particularly for electric household appliances and cleaning machines in general, comprising at least two tubular elements telescopically associated with each other, a first one of these tubular elements being associated coaxially with a second one having a smaller cross-section and being slideable inside the first tubular element, one of these first and second tubular elements having at least one sliding portion whereat the outer or inner lateral surface is shaped so as to form at least one step, wherefrom the cross-section gradually increases radially and along a given peripheral arc, a longitudinal cavity being formed at the peripheral arc, and a tooth having a similar shape fitting snugly and reversibly in the cavity after sliding over a portion of the surface relative to the peripheral arc, the tooth being formed at the inner or outer surface of the other one of the first and second tubular elements on the side where mutual coupling occurs upon assembly.