A robotic cleaner may include a chassis, an agitator assembly configured to engage a surface to be cleaned, and a lift mechanism moveably coupling the agitator assembly to the chassis. The lift mechanism may include a biasing mechanism. The biasing mechanism may be configured to generate a biasing force that urges the agitator assembly in a direction away from the surface to be cleaned. The biasing force may be insufficient to lift the agitator assembly from the surface to be cleaned.

A robotic cleaner may include a housing, an agitator, and one or more projections. The housing may have a front side, a back side opposite the front side, a left side, and a right side opposite the left side. The right and left sides extend between the front and back sides. The agitator may be configured to rotate about an agitator rotation axis, the agitator rotation axis extending substantially parallel to the front side. The one or more projections may extend from the housing. The one or more projections may include one or more cliff sensors.

A surface cleaning head with a leading roller may be used to facilitate capturing of debris in the air flow into a suction conduit on the underside of the surface cleaning head. The leading roller is generally positioned adjacent to and in advance of the opening of the suction conduit. The surface cleaning head may have dual agitators—a leading roller and a rotating brush roll—with the leading roller being located in front of the brush roll. The leading roller may have a smaller diameter than the brush roll and may provide a softer cleaning element. The leading roller may also have a bottom portion exposed to the flow path to the suction conduit and at least a top half that is not exposed to that flow path. The leading roller may also float relative to the surface cleaning head and/or may be adjustable relative to the brush roll.

A surface cleaner is disclosed having abase moveable along a surface and an operating component configured to perform a function of the cleaner. The surface cleaner includes a sensor configured to generate a signal based on the surface and a controller in communication with the sensor and the operating component. The controller is operable to convert the signal from a time domain to a frequency domain to generate a surface fingerprint. Furthermore, the controller is operable to control the operating component based on the surface fingerprint.

A cleaning machine may include: a first brush comprising a first brush shaft extending in a left-right direction and a first brush body held by the first brush shaft; a second brush comprising a second brush shaft extending in the left-right direction and a second brush body held on the second brush shaft; a brush supporting member supporting each of the first brush and the second brush such that the first brush and the second brush are rotatable; a body supporting the brush supporting member such that the brush supporting member is pivotable; and a pivot mechanism configured to pivot the brush supporting member with respect to the body. At least the first brush may move with respect to the body in an up-down direction when the brush supporting member pivots with respect to the body.

A floor treatment facility includes a chassis, a running gear for guiding the chassis over a floor, a treatment facility for treating the floor, a suction mouth, and a guide for applying the treatment facility movably along a predetermined path in relation to the chassis. The path extends in a vertical direction in relation to the floor and the path encloses a predefined angle with a plane parallel to the floor when the floor-treatment facility is standing on an even floor. The angle is at most approximately 45°.

A vacuum cleaner includes an upright body mounted to a base that moves over a surface to be cleaned. A rotational coupling can be provided between the upright body and the base for coupling the upright body to the base for movement about at least one rotational axis. The rotational coupling can include at least a swivel joint. A cord rewinder can be provided above the swivel joint for storing and dispensing a power cord.

A surface cleaning apparatus has a rotatably mounted brush. The brush has a leading row of bristles, a trailing row of bristles and a hair blocking member between the trailing row of bristles and the leading row of bristles.

A mobile cleaning robot can be movable within an environment. The mobile cleaning robot can include a body, a cleaning head, a biasing element, and a linkage. The cleaning head can be operable to extract debris from a floor surface and can be configured to move vertically relative to the body between an extended position and a retracted position. The biasing element can be connected to the body and can be movable with the cleaning head. The linkage can be connected to the cleaning head and the biasing element. The linkage can be rotatably connected to the body to, together with the biasing element, bias the cleaning head toward the retracted position.

A surface cleaner may have various features including an engagement mechanism secured to an agitator support frame and positioned to be pivoted by an agitator lift lever as the agitator lift lever translates, the pivoting engagement mechanism lifting the agitator support frame and the agitator secured thereto from a lowered position to a raised position. Other features may include a projection to limit belt slack when the agitator assembly is raised, a compact detent mechanism for releasing a spine assembly in an upright surface cleaner, a compact motor drive assembly, a self-priming centrifugal pump, a fluid-dispensing system having a high flow operating state and a low flow operating state, and a clean-out tray in which a base of the surface cleaner may be docked.