Abstract: A protective device for floor cleaning apparatus with a rotating driving source and with brush rollers driven thereby comprises a housing 2 with a bottom wall on its side facing towards the floor. The bottom wall is provided with working apertures 9 for the brush rollers and with tooth-shaped carpet deflectors which project on the side on which the bristles of the brush rollers enter the housing from the bottom wall into the working apertures.

Abstract: A vacuum cleaner nozzle having a front suction inlet and a suction passage. A first brush is rotatably mounted to the nozzle at the suction inlet, and a second brush is rotatably mounted to the nozzle adjacent the first brush at the suction inlet. A first transfer passage extends from the suction inlet adjacent the first brush for passing material dislodged by the first brush to the suction passage. A second transfer passage extends from the suction inlet adjacent the second brush for transferring material from the second brush to the second transfer passage. In one form, the brushes are rotated by separate drive means, and in another form, one of the brushes is rotated by drive means and is coupled to the other brush for rotation thereof. The brushes, in the illustrated embodiment, rotate in opposite directions so that a brush is brushing forwardly relative to the movement of the vacuum cleaner and either of opposite directions of movement thereof.

Abstract: A portable brush vacuum cleaner includes a casing enclosing an electric motor for a suction fan. The casing also encloses at least one roller cleaning brush driven by a speed reduction gear. A brush housing is connected to a dust collector provided above the roller brush. The brush housing is also connected with the suction side of the fan through a suction channel. In a divided space above the roller brush an additional suction chamber is provided which is partially formed by baffle elements. The additional suction chamber extends about the whole length of the brush or brushes and opens into the suction channel leading to the dust-collector.

Abstract: In a portable cleaning apparatus, at least two rotatable cleaning members are mounted within a casing and contra-rotationally driven by an electrical motor and step-down gearing arranged between the motor and the cleaning members with a releasable clutch connecting the driving motor to the cleaning members. A cover is mounted over the rotatable cleaning members and the electrical motor and the casing includes a vent channel communicating with the cover. Suction from the at least two cleaning members to a dust collector, mounted at the end of the vent channel formed as a handhold, is provided by a blower driven by the electrical motor. The axes of the driving motor and the at least two cleaning members are parallel with one another and a blower rotor connected to a shaft of the driving motor is arranged behind an opening out of the cover into the casing as viewed from the direction of air flow.

Abstract: A new and improved brush for a carpet scrubber with a flat, even continuous outer bristle extremity.

Abstract: An apparatus for disintegrating and removing layers of earth, especially under water, comprising a housing in which at least one volute compartment is formed, which is open on the underside and which accommodates a rotor which comprises disintegrators and which is rotatable about an axis that is at least substantially perpendicular to a plane through the lower edge of the compartment. The rotor is coupled to a drive mechanism, the volute compartment being connected near its throat to a discharge system. The housing may be suspended from a moving device.