A floor cleaner including a recovery tank. The recovery tank includes a tank body having a lower end wall, an open upper end, and a sidewall that extend upwardly from the lower end wall. A cover that includes a suction air outlet in fluid communication with a vacuum source. An inlet duct extends upwardly from the lower end wall. The recover tank includes a shutoff float including a float body and a closure. The float body is configured to float on a surface of cleaning fluid and the closure is received in the suction air outlet to close the suction air outlet. The float body moves along the inlet duct as the float body floats on the surface of the cleaning fluid. The float body includes an aperture extending through the float body and the inlet duct extends through the aperture of the float body.

A vacuum cleaner including a housing, a suction inlet, a suction source, a collector and a filtering unit. The housing includes a suction airflow through the housing. The suction source draws the suction airflow through the suction inlet. The collector receives debris separated from the suction airflow and is disposed between the suction inlet and the suction source. The filtering unit includes a filter, a retractable member, and a biasing member, where the retractable member is operable in directions towards and away from the filter for supplying momentary impact to the filter for providing agitations to rid the filter from debris. The biasing member urges the retractable member towards the filter.

An in-line vacuum filter comprises a manifold having an inlet, an outlet, a collecting container, and an actuatable filter paddle. A flow of air generated by a source of negative pressure travels from the inlet to the outlet. The actuatable filter paddle is positioned within the manifold such that it can be actuated between a first position and a second position. In the first position, the actuatable filter paddle is placed within the flow of air and in the second position, the actuatable filter paddle is removed from the flow of air. The filter paddle is preferably arcuate concave and comprises a plurality of apertures. In the first position, the filter paddle gradually diverts objects larger than a width of the apertures away from the flow of air. Diverted objects may travel to a removable collection container.

This document describes a mobile cleaning robot including a chassis having a forward portion and an aft portion; a blower affixed to the chassis; a bin supported by the chassis and configured to receive airflow from the blower, the chassis enabling evacuation of the bin through a bottom of the robot. The bin includes a top, a bottom, a sidewall, and an internal barrier. The bin includes a first volume and a second volume separated by the internal barrier and a filter unit supported by the internal barrier and removably disposed in an airflow path between the first volume that includes an intake port in the bin and the second volume that includes an exhaust port in the bin.

A dust collecting device with an extendible and flexible air tube including a housing, a cover, an air tube, a dust collecting head, a filter material and a gas guiding device. The cover is detachably disposed on the housing and has an accommodating groove. The air tube is positioned in the accommodating groove and extendible and flexible, the air tube is capable of being extended to outside the accommodating groove and retracted to be accommodated in the accommodating groove, and a bending angle and an extension direction of the air tube is changeable by flexibility. The dust collecting head is disposed at the air tube, and is positioned in the accommodating groove when the air tube is shortened to be accommodated in the accommodating groove. The filter material is disposed inside the housing and close to the cover. The gas guiding device is disposed inside the housing.

A surface cleaning apparatus comprises a canister body having a recess with sidewalls that extend upwardly from a platform, the platform having a pre-motor filter housing with a pre-motor filter positioned therein, wherein at least 50% of a perimeter of the pre-motor filter is recessed inwardly from the sidewalls of the recess whereby, when a pre-motor filter is positioned in the pre-motor filter housing, a portion of the platform is visible between the perimeter of the pre-motor filter and the sidewalls of the recess. An air treatment assembly is removably mountable to the canister body and seats on the recess when the air treatment assembly is mounted to the canister body.

The present disclosure provides an autonomous robot, configured to perform a cleaning function and an emptying function.

A dust collecting assembly for a vacuum cleaner includes a dust collecting member and a threaded fitting. The dust collecting member is configured to collect dust and debris. The threaded fitting is disposed in communication with the dust collecting member. The threaded fitting includes a threaded collar configured to be connected to a vacuum cleaner. At least one mounting tab is spaced from the threaded collar. The mounting tab is configured to be received by the vacuum cleaner.

An evacuation station for a mobile floor cleaning robot comprises a stationary base portion having an upper surface and an air treatment assembly that is rotatable from an in-use position to a removable position in which all of the air treatment assembly is removable from the stationary base portion.

A hand vacuum cleaner has a dual first stage cyclones.