A cyclone assembly for a surface cleaning apparatus has a first cyclonic cleaning stage and a second cyclonic cleaning stage downstream from the first cyclonic cleaning stage. The first cyclonic cleaning stage has a first cyclonic stage air outlet and the second cyclonic cleaning stage has a plurality of second cyclonic stage cyclone air inlets and a second cyclonic stage air inlet end. The first cyclonic cleaning stage air outlet communicates directly with an annular flow region that extends around the second stage air inlet end of the second cyclonic stage.

A hand vacuum cleaner has an air flow path extending from a dirty air inlet to a clean air outlet. A cyclone chamber positioned in the air flow path has a cyclone air inlet and a cyclone air outlet. A pre-motor filter is positioned downstream of the cyclone air outlet and a suction motor is positioned in the air flow path downstream of the pre-motor filter. The pre-motor filter is vertically spaced from the cyclone axis of rotation when the upper end of the hand vacuum cleaner is positioned above the lower end of the hand vacuum cleaner, and air travels generally rearwardly from the pre-motor filter to the suction motor.

A robot cleaner comprising: a cleaner body including a wheel unit for autonomous traveling and a suction unit sucking air containing dust; a sensing unit disposed at one side of the cleaner body; a dust container accommodated in a dust container accommodation part formed at the other side of the cleaner body, the dust container collecting dust filtered from sucked air; and a dust container cover disposed to cover a top surface of the dust container, wherein an upper end of the sensing unit is formed at a position protruding upward from a top surface of the cleaner body and a top surface of the dust container cover.

A surface cleaning apparatus comprises a hand vacuum cleaner, a rigid air flow conduit and a surface cleaning head. The hand vacuum cleaner has a main body, which houses a suction motor and fan assembly, and a cyclone unit provided on a front end of the main body. The cyclone unit has a first stage cyclone with a cyclone axis of rotation that extends between the front and rear ends of the first stage cyclone. Air enters the cyclone unit through a front wall of the first stage cyclone. The hand vacuum cleaner is removably mounted to a downstream end of the rigid air flow conduit and when the hand vacuum cleaner is mounted to the downstream end of the rigid air flow conduit, the handle is a driving handle for the surface cleaning apparatus.

A hand vacuum cleaner comprises a body which houses a suction motor. A handle is provided on a sidewall of the body and extends outwardly therefrom. The handle axis intersects the suction motor. An air treatment member comprises a chamber, which has an openable door and which forms a front face of the hand vacuum cleaner. The air treatment member having an inner hollow member that occupies all of the central portion of the chamber between the front end of the chamber and a rear end of the chamber. The air treatment member has an openable door lock comprising a door release actuator wherein the door is moveable to an open position in which the chamber is opened when the door release actuator is actuated.

A hand vacuum cleaner comprises a body which houses a suction motor. An end of a handle is provided on a sidewall of the body and extends outwardly therefrom. An air treatment member comprises a chamber, which has an openable door and which forms a front face of the hand vacuum cleaner. An openable door lock comprises an axially extending member having a front end and a rear end and, when the door is in a closed portion, the front end secures the openable door in the closed position and the door release actuator is rotationally mounted and, in use, the door release actuator is rotated to drive the axially extending member whereby the door is unlocked

A hand vacuum cleaner with a user interface.

A hand vacuum cleaner has a cyclone, which has a front end and a rear end with a cyclone axis of rotation extending between the front and rear ends. A pistol grip handle has a pistol grip axis that extends through the pistol grip handle from a lower end of the pistol grip handle to an upper end of the pistol grip handle. The pistol grip axis intersects the suction motor. A post motor filter, which is positionable in the air flow path, comprises a plurality of removeable filters.

A surface cleaning apparatus comprises a hand vacuum cleaner, a rigid air flow conduit and a surface cleaning head. The hand vacuum cleaner has a body, which houses a suction motor, and a cyclone unit provided on a front end of the body. The cyclone unit has a cyclone with a cyclone axis of rotation that extends between the front and rear ends of the first stage cyclone. Air enters the cyclone unit through a cyclone unit air inlet that is centrally positioned on a front end wall of the cyclone. A front electrical connector is positioned adjacent the cyclone unit air inlet. When the hand vacuum cleaner is mounted to the rigid air flow conduit, the rigid air flow conduit is concurrently connected in air flow communication with the cyclone unit air inlet and the outlet end electrical connector is electrically connected to the front electrical connector.

A hand vacuum cleaner has a main body housing a suction motor. A cyclone has a front end and a rear end with a cyclone axis of rotation extending between the front and rear ends. A pistol grip handle extends downwardly from a lower side of the main body. A post motor filter is positionable in a post motor filter chamber wherein the post motor filter is removable radially and wherein the cyclone axis of rotation extends through the suction motor.