Abstract: A roller for a vacuum cleaner comprises: an interior roller body which comprises a resiliently deformable region; and an exterior abrasion-resistant skin which surrounds the interior roller body.

Abstract: A cleaner head 10 for a vacuum cleaner has a suction inlet 20 defined in the lower face of a housing 11 and a suction passageway 20A through the housing 11. A rotatable sealing element 40 is located at a front of the housing 11. The rotatable sealing element 40 has a rotational axis 41 which is parallel to the lower face of the cleaner head. An agitator 60 is positioned rewards of the rotatable sealing element 40. The suction passageway 20A is located between the agitator 60 and the rotatable sealing element 40.

Abstract: A surface treating appliance includes a first cyclonic separating unit including a plurality of first cyclones arranged in parallel about an axis, and a second cyclonic separating unit located downstream from the first cyclonic separating unit and including a plurality of second cyclones arranged in parallel about said axis. Each second cyclone has a fluid inlet and a fluid outlet. The plurality of second cyclones is divided into at least a first set of second cyclones and a second set of second cyclones. The fluid inlets of the first set of second cyclones are arranged in a first group and the fluid inlets of the second set of second cyclones are arranged in a second group spaced along said axis from the first group. This enables the separating apparatus to have a compact appearance.

Abstract: A surface treating appliance includes a first cyclonic separating unit including a plurality of first cyclones arranged in parallel about an axis, and a second cyclonic separating unit located downstream from the first cyclonic separating unit and including a plurality of second cyclones arranged in parallel, the plurality of second cyclones being divided into at least a first set of second cyclones arranged about the axis and a second set of second cyclones. The plurality of first cyclones extends about the first set of second cyclones, and the first set of second cyclones extends about the second set of second cyclones.

Abstract: The present invention relates to a separating apparatus for separating particles from a fluid flow. Particularly, but not exclusively, the invention relates to a vacuum cleaner having such a separating apparatus for removing dust particles from a dust laden airstream. The separating apparatus includes a first cyclonic cleaning stage including at least one cyclone, and an electrostatic filter located downstream of and in fluid communication with the at least one cyclone, wherein at least a portion of the electrostatic filter is located longitudinally through the separating apparatus, at least a portion of the first cyclonic cleaning stage being arranged around the electrostatic filter.

Abstract: The present invention relates to an electrostatic filter. Particularly but not exclusively the invention relates to an electrostatic filter for removing dust particles, for example an electrostatic filter for use in a vacuum cleaner, fan or air conditioner. The electrostatic filter includes a filter medium located between a first and a second electrode, each at a different voltage during use, such that a potential difference is formed across the filter medium, wherein a property of the filter medium varies along the length of the filter medium.

Abstract: The present invention relates to an electrostatic filter. Particularly but not exclusively the invention relates to an electrostatic filter for removing dust particles, for example an electrostatic filter for use in a vacuum cleaner, fan or air conditioner. The electrostatic filter includes a filter medium located between a first and a second electrode, each at a different voltage during use, such that a potential difference is formed across the filter medium, the first and second electrodes being substantially non-porous.

Abstract: The present invention relates to a separating apparatus for separating particles from a fluid flow. Particularly, but not exclusively, the invention relates to a domestic vacuum cleaner having such a separating apparatus for removing dust particles from a dust laden airstream. The separating apparatus includes a first cyclonic cleaning stage including at least one cyclone, and an electrostatic filter, wherein the electrostatic filter is in fluid communication with the at least one cyclone via an air passage, at least a portion of the air passage being formed longitudinally through the separating apparatus, wherein at least a portion of the first cyclonic cleaning stage, the electrostatic filter and the air passage are arranged concentrically.

Abstract: A surface treating appliance includes a first cyclonic separating unit including a plurality of first cyclones arranged in parallel about an axis, and a second cyclonic separating unit located downstream from the first cyclonic separating unit and including a plurality of second cyclones arranged in parallel about said axis. Each second cyclone has a fluid inlet and a fluid outlet. The plurality of second cyclones is divided into at least a first set of second cyclones and a second set of second cyclones. The fluid inlets of the first set of second cyclones are arranged in a first group and the fluid inlets of the second set of second cyclones are arranged in a second group spaced along said axis from the first group. This enables the separating apparatus to have a compact appearance.

Abstract: A surface treating appliance includes a first cyclonic separating unit including a plurality of first cyclones arranged in parallel about an axis, and a second cyclonic separating unit located downstream from the first cyclonic separating unit and including a plurality of second cyclones arranged in parallel, the plurality of second cyclones being divided into at least a first set of second cyclones arranged about the axis and a second set of second cyclones. The plurality of first cyclones extends about the first set of second cyclones, and the first set of second cyclones extends about the second set of second cyclones.

Abstract: The present invention relates to a separating apparatus for separating particles from a fluid flow. Particularly, but not exclusively, the invention relates to a vacuum cleaner having such a separating apparatus for removing dust particles from a dust laden airstream. The separating apparatus includes a first cyclonic cleaning stage, a second cyclonic cleaning stage arranged downstream from the first cyclonic cleaning stage, and an elongate filter arranged downstream from the second cyclonic cleaning stage, wherein the filter is at least partially surrounded by the first cyclonic cleaning stage.

Abstract: The invention relates to apparatus and a method for separating solid particles from fluids and particularly gas flows. The apparatus is particularly for use in conjunction with an internal combustion engine or vacuum cleaner. The apparatus includes a cyclone separator which has at least two axial common cyclone separator elements, an inner and outer element, in conjunction with a two-stage electrostatic precipitator. The apparatus allows the filtration of fluid effectively, even if the flow varies over time.

Abstract: The present invention relates to a separating apparatus for separating particles from a fluid flow. Particularly, but not exclusively, the invention relates to a vacuum cleaner having such a separating apparatus for removing dust particles from a dust laden airstream. The separating apparatus includes a first cyclonic cleaning stage, a second cyclonic cleaning stage arranged downstream from the first cyclonic cleaning stage, and an elongate filter arranged downstream from the second cyclonic cleaning stage, wherein the filter is at least partially surrounded by the first cyclonic cleaning stage.

Abstract: The present invention relates to a separating apparatus for separating particles from a fluid flow. Particularly, but not exclusively, the invention relates to a vacuum cleaner having such a separating apparatus for removing dust particles from a dust laden airstream. The separating apparatus includes a first cyclonic cleaning stage, a second cyclonic cleaning stage arranged downstream from the first cyclonic cleaning stage, and an elongate filter arranged downstream from the second cyclonic cleaning stage, wherein the filter is at least partially surrounded by the first cyclonic cleaning stage.

Abstract: The present invention relates to an electrostatic filter. Particularly but not exclusively the invention relates to an electrostatic filter for removing dust particles, for example an electrostatic filter for use in a vacuum cleaner, fan or air conditioner. The electrostatic filter includes a filter medium located between a first and a second electrode, each at a different voltage during use, such that a potential difference is formed across the filter medium, wherein a property of the filter medium varies along the length of the filter medium.

Abstract: The present invention relates to a surface treating appliance for separating particles from a fluid flow. Particularly, but not exclusively, the invention relates to a domestic vacuum cleaner for separating particles, such as dirt and dust particles, from a dust laden airflow. The surface treating appliance includes a first cyclonic cleaning stage, a second cyclonic cleaning stage arranged downstream from the first cyclonic cleaning stage, and an electrostatic filter connected to a controlled high voltage power supply, the electrostatic filter being arranged separate from, but in fluid communication with, the first cyclonic cleaning stage and the second cyclonic cleaning stage.

Abstract: The present invention relates to a separating apparatus for separating particles from a fluid flow. Particularly, but not exclusively, the invention relates to a domestic vacuum cleaner having such a separating apparatus for removing dust particles from a dust laden airstream. The separating apparatus includes a first cyclonic cleaning stage including at least one cyclone, and an electrostatic filter, wherein the electrostatic filter is in fluid communication with the at least one cyclone via an air passage, at least a portion of the air passage being formed longitudinally through the separating apparatus, wherein at least a portion of the first cyclonic cleaning stage, the electrostatic filter and the air passage are arranged concentrically.

Abstract: The present invention relates to a separating apparatus for separating particles from a fluid flow. Particularly, but not exclusively, the invention relates to a vacuum cleaner having such a separating apparatus for removing dust particles from a dust laden airstream. The separating apparatus includes a first cyclonic cleaning stage including at least one cyclone, and an electrostatic filter located downstream of and in fluid communication with the at least one cyclone, wherein at least a portion of the electrostatic filter is located longitudinally through the separating apparatus, at least a portion of the first cyclonic cleaning stage being arranged around the electrostatic filter.

Abstract: The present invention relates to an electrostatic filter. Particularly but not exclusively the invention relates to an electrostatic filter for removing dust particles, for example an electrostatic filter for use in a vacuum cleaner, fan or air conditioner. The electrostatic filter includes a filter medium located between a first and a second electrode, each at a different voltage during use, such that a potential difference is formed across the filter medium, the first and second electrodes being substantially non-porous.