An upright vacuum cleaner with one or more features, such as a top opening rigid container, a headlight, a replaceable power cord a motor housing suspended within the vacuum to reduce noise and/or vibration a clutch assembly with a RPM sensor, and/or one or more filter plates to improve airflow.

An autonomous mobile robot includes a body, a drive supporting the body above a floor surface, a light-propagating plate positioned on the body and having a periphery defining a continuous loop, light sources each being positioned to direct light through a portion of the plate to a portion of the continuous loop, and a controller to selectively operate the light sources to provide a visual indicator of a status or service condition of the autonomous mobile robot. The drive is configured to maneuver the mobile robot about the floor surface.

A surface cleaning apparatus comprising a surface cleaning head, a rigid air flow conduit and a hand vacuum cleaner removably mountable to an outlet end of the rigid wand. The hand vacuum cleaner comprises a main body, a cyclone provided at the front end of the hand vacuum cleaner, an inlet passage positioned at an upper end of the cyclone and a hand vacuum cleaner electrical connector provided on the front end of the hand vacuum cleaner adjacent the inlet passage. The hand vacuum cleaner electrical connector is releasably connectable with the outlet end electrical connector of the rigid wand. When the hand vacuum cleaner is mounted to the outlet end of the rigid wand, the longitudinally extending passage axis extends in a same direction as the cyclone axis of rotation and the suction motor axis of rotation extends in the same direction as the cyclone axis of rotation.

An electric powered work machine according to one aspect of the present disclosure includes a first and a second digital filters, a control sound source, an error sensor, and a characteristics adjustor. The first digital filter includes a series of taps and generates a control signal. The control sound source produces an artificial noise in accordance with the control signal. The error sensor converts a synthesized sound of the artificial noise and a target noise at a canceling location to an error signal. The second digital filter includes N taps and generates a filtered reference signal. The characteristics adjustor uses the error signal and the filtered reference signal to adjust a coefficient of each tap of M taps in the series of taps. Each of M and N is a positive integer satisfying M<N.

Embodiments of a unified airflow system for ultraviolet disinfection devices are disclosed. One embodiment of the present disclosure includes a unified airflow assembly and a control unit. The unified airflow assembly provides a shared airflow passage between a UV source and an airflow accessory capable of extracting contaminants from a target surface using a suction airstream. The UV source may be fluidically disconnected from the airflow accessory. The unified airflow assembly may include at least one air restriction unit in the shared airflow passage for manipulating a suction airstream therein. The control unit may be configured to drive the at least one air restriction unit to restrict the suction airstream to only one of the UV source and the airflow accessory.

A surface cleaning apparatus including an air flow path extending from a dirty air inlet to a clean air outlet, a main body comprising a handle, a suction motor and fan assembly that is positioned in the air flow path, and an air treatment member removably mounted to the main body. The air treatment member has an air treatment chamber that is positioned in the air flow path when the air treatment member is mounted to the main body and a cleaning tool electrical connector. When a cleaning tool is connected to the air treatment member, the cleaning tool is connected in air flow communication with the air treatment member and the cleaning tool is electrically connected to the air treatment member.

A surface cleaning apparatus comprises a brushroll that rotates about an axis. The brushroll defines a cylindrical portion and the axis extends centrally through the cylindrical portion. The brushroll also includes a rib that extends in a direction away from the axis. The rib includes a face extending along a line that is collinear with a secant through the cylindrical portion. A brush member extends from the face.

A hand vacuum cleaner comprises a main body has a driving handle and houses a suction motor and fan assembly, the suction motor and fan assembly having a suction motor axis of rotation wherein the driving handle has a hand grip portion that extends upwardly and forwardly when the hand vacuum cleaner is oriented with the upper end above the lower end. An air treatment member has a dirt collection region having an openable door provided on a front end of the air treatment member.

The invention discloses an inverted cone separation device with double dust-collecting cups and cleaner comprising the same, the inverted cone separation device comprises a separator, a dust-collecting cup connecting member, and dust-collecting cups, the separator includes a first and second separator, the first separator is arranged in a first cavity, and the second separator is arranged in a second cavity; the first separator includes an inverted cone filter, the surface of the inverted cone filter includes a filtering and non-filtering surface; the filtering surface is in communication with an air duct. When implementing the invention, large-particle garbage can be separated in a first dust-collecting cup through the inverted cone filter, and other garbage enters the second dust-collecting cup through the air duct, therefore, the large-particle garbage can be separated and be effectively prevented from entangling and blocking in the dust-collecting cup, and the efficiency of dust collection is improved.

Methods and apparatus for cleaning a surface with a cleaning device having a body with a handle, a connector, and one or more cleaning heads that are removably attached to the cleaning device. Each cleaning head include a lower surface arranged to contact a surface to be cleaned and a dirt collection chamber permanently attached to the cleaning head. The cleaning head may include a support structure to support the dirt collection chamber and a cleaning sheet. The cleaning head also may include a suction nozzle. At least a portion of the dirt collection chamber may be made of a filter material.