An autonomous floor cleaning robot includes a robot body, a drive supporting the robot body to maneuver the robot across a floor surface, a pad holder attached to an underside of the robot body and configured to receive a removable cleaning pad, and a pad sensor configured to sense a pad type identifier on a central region of the cleaning pad. The pad type identifier includes a marker on the central region of the cleaning pad. The cleaning pad has a mounting card affixed thereto, and the pad type identifier includes an array of apertures that expose selected portions of the marker.

A water supply mechanism and an automatic cleaning apparatus are provided. The water supply mechanism is applicable for a wet cleaning assembly of a cleaning device, comprising a water outlet device, wherein the water outlet device is connected to a cleaning liquid outlet of a water tank, and a cleaning liquid in the water tank flows to the water outlet device through the cleaning liquid outlet of the water tank and is transported to a surface to be cleaned through the water outlet device.

A mobile cleaning robot can include a body, a drive wheel, and a wheel stop. The drive wheel can be connected to the body and can be operable to move the mobile cleaning robot about an environment. The wheel stop can be movable with respect to the body and the drive wheel between a stop position and a release position. The wheel stop can be engageable with the drive wheel in the stop position to limit vertical travel of the drive wheel with respect to the body.

A robotic floor cleaning device that features a controlled liquid releasing mechanism. A rotatable cylinder with at least one aperture for storing a limited quantity of liquid is connected to a non-propelling wheel of the robotic floor cleaning device. There is a passage below the cylinder and between the cylinder and a drainage mechanism. The cylinder is within or adjacent to a liquid reservoir. Each time an aperture is exposed to the liquid within the reservoir it fills with liquid. As the wheel turns the connected cylinder is rotated until the aperture is adjacent to the passage. The liquid in the aperture will flow through the passage and enter the drainage mechanism which disperses the liquid to the working surface. The release of liquid is halted when the connected wheel stops turning.

A detachable structure and a self-moving robot are provided. The detachable structure is provided in a self-moving robot including a wet cleaning apparatus. The wet cleaning apparatus includes a housing and a cleaning assembly disposed in the housing, and the detachable structure includes: a pressure plate having a connection end and a movable end. The movable end is adjustably clamped to the housing. When the movable end and the housing are in a clamped state, the movable end blocks a partial structure of the cleaning assembly such that the cleaning assembly abuts against the housing; and when the movable end and the housing are in a non-clamped state, the cleaning assembly is removable from the housing.

A robotic cleaning device, along with associated systems and methods of using the same, is described. The device may include a body portion that may define a top surface, a bottom surface, and a continuous sidewall surface. An example device may further include a drive system that propels the robotic device. An example device may further include two or more bottom brushes. An example device may further include a continuous opening that translates around the sidewall surface. An example device may further include a pair of sidewall brushes that may oscillate along the opening.

An extraction head for a cleaning machine is disclosed for traveling along a cleaning path on a variable-height floor. The extraction head comprises a body including a floor-facing surface and an extraction aperture disposed in the floor-facing surface. The extraction head comprises a vacuum outlet in fluid communication with the extraction aperture. The extraction head comprises an adjustable-height brush positioned in front of the extraction head body along the cleaning path. The adjustable-height brush is configured to translocate upwardly and downwardly as the extraction head moves along the cleaning path on the variable-height floor. The adjustable-height brush may comprise a proximal end and a distal end opposite the proximal end. The proximal and distal ends may be configured to translocate upwardly and downwardly relative to each other as the extraction head moves along the cleaning path on the variable-height floor.

A robotic vacuum cleaning apparatus comprises: a head; a suction element to facilitate suction cleaning of a ground surface via the head; and a cleaning element.

A surface cleaning apparatus is provided with a primary fluid distributor and an auxiliary fluid distributor. Each distributor can have a separate and independent flow control actuator. The flow control actuator for the auxiliary fluid distributor is operably coupled with a push-push flow control mechanism, where push-push flow control mechanism has a push on/push off configuration such that pushing the auxiliary flow control actuator once starts fluid flow from the auxiliary fluid distributor and subsequently pushing the auxiliary flow control actuator again stops fluid flow from the auxiliary fluid distributor.

A surface cleaning apparatus such as an extractor has a fluid flow path extending from a dirty fluid inlet head to a clean air outlet. The fluid flow path upstream of the separation stage comprises a removable portion.