A dirt separation device for a surface cleaning apparatus including: a separator for separating dirt from dirt-laden air; an inlet through which dirt-laden air is drawn into the separator; an outlet through which cleaner air exits the separator; a dirt collection chamber for receiving separated dirt; a cover member movable between a first position in which the cover member inhibits access to the dirt collection chamber and a second position in which the cover member permits access to the dirt collection chamber; an actuator device coupled to the cover member for effecting movement of the cover member from the first position to the second position, wherein the actuator device is rotationally movable, or an engagement part operably connected to the actuator device is rotationally movable, to effect movement of the closing member from the first position to the second position.

A docking station for a robotic surface cleaning apparatus has a momentum separator. The momentum separator has a plurality of walls comprising an upper wall, a lower wall and a first sidewall, wherein the first sidewall extends between the upper and lower walls, and wherein the first sidewall comprises a side screen. A first end wall is spaced from and faces the side screen wherein an up flow chamber is positioned between the first end wall and the side screen.

A docking station for a robotic surface cleaning apparatus has a momentum separator. The momentum separator has a plurality of walls comprising an upper wall, a lower wall and a first sidewall, wherein the first sidewall extends between the upper and lower walls, and wherein the first sidewall comprises a side screen. A first end wall is spaced from and faces the side screen wherein an up flow chamber is positioned between the first end wall and the side screen.

A docking station for a robotic surface cleaning apparatus has a momentum separator. The momentum separator has an upper wall, a lower wall and a first sidewall extending between the upper and lower walls. The first sidewall comprises a side screen and an end wall is spaced from and faces the side screen whereby an up flow chamber is positioned between the end wall and the side screen. The upper wall also comprises an upper screen and an upper end wall is spaced from and faces the upper screen wherein an upper air flow chamber is positioned between the upper end wall and the upper screen.

A docking station for a robotic surface cleaning apparatus has a momentum separator. The momentum separator has an upper wall, a lower wall and a first sidewall extending between the upper and lower walls. The first sidewall comprises a side screen and an end wall is spaced from and faces the side screen whereby an up flow chamber is positioned between the end wall and the side screen. The upper wall also comprises an upper screen and an upper end wall is spaced from and faces the upper screen wherein an upper air flow chamber is positioned between the upper end wall and the upper screen.

A hand vacuum cleaner comprises a cyclone comprising a front end having a cyclone air inlet, a rear end having a cyclone air outlet and a cyclone axis of rotation extending between the front end and the rear end of the cyclone. A conical pre-motor filter is positioned rearward of the cyclone. The pre-motor filter has a front end that faces that faces towards the cyclone air outlet. A suction motor is positioned rearward of the pre-motor filter. The suction motor has an inlet end that faces towards a rear end of the pre-motor filter. A handle is provided at the rear end of the hand vacuum cleaner and is positioned rearward of the suction motor. The handle has an energy storage member housing, The cyclone axis of rotation and the suction motor axis of rotation are parallel, and the handle axis extends at an angle to the cyclone axis of rotation and the suction motor axis of rotation.

A hand vacuum cleaner comprises a cyclone comprising a front end having a cyclone air inlet, a rear end having a cyclone air outlet and a cyclone axis of rotation extending between the front end and the rear end of the cyclone. A conical pre-motor filter is positioned rearward of the cyclone. The pre-motor filter has a front end that faces that faces towards the cyclone air outlet. A suction motor is positioned rearward of the pre-motor filter. The suction motor has an inlet end that faces towards a rear end of the pre-motor filter. A handle is provided at the rear end of the hand vacuum cleaner and is positioned rearward of the suction motor. The handle has an energy storage member housing, The cyclone axis of rotation and the suction motor axis of rotation are parallel, and the handle axis extends at an angle to the cyclone axis of rotation and the suction motor axis of rotation.

A surface cleaning apparatus has an air flow path from a dirty air inlet to a clean air outlet. The air flow path comprising an air inlet conduit which extends downstream from the dirty air inlet. The Surface cleaning apparatus has a first stage cyclone and a second stage cyclone downstream from the first stage cyclone, the second stage cyclone having a plurality of air inlets. The cyclone axis of rotation of the first stage cyclone extends through the air outlet of the second stage cyclone. the first stage cyclone, the second stage cyclone having a plurality of air inlets, an air outlet and a cyclone axis of rotation. A plane that is transverse to the axis of rotation of the second stage cyclone extends through the inlet conduit and the air outlet of the second stage cyclone

A surface cleaning apparatus has an air flow path from a dirty air inlet to a clean air outlet. The air flow path comprising an air inlet conduit which extends downstream from the dirty air inlet. The Surface cleaning apparatus has a first stage cyclone and a second stage cyclone downstream from the first stage cyclone, the second stage cyclone having a plurality of air inlets. The cyclone axis of rotation of the first stage cyclone extends through the air outlet of the second stage cyclone. the first stage cyclone, the second stage cyclone having a plurality of air inlets, an air outlet and a cyclone axis of rotation. A plane that is transverse to the axis of rotation of the second stage cyclone extends through the inlet conduit and the air outlet of the second stage cyclone

A hand vacuum cleaner has an openable air treatment stage. The air treatment stage has a lower openable portion that is moveably mounted to a forward portion of the pre-motor filter housing.