A robotic cleaner includes a housing, a suction conduit with an opening, and a leading roller mounted in front of a brush roll. An inter-roller air passageway may be defined between the leading roller and the brush roll wherein the lower portion of the leading roller is exposed to a flow path to the suction conduit and an upper portion of the leading roller is outside of the flow path. Optionally, a combing unit includes a plurality of combing protrusions extending into the leading roller and having leading edges not aligned with a center of the leading roller. Optionally, a sealing strip is located along a rear side of the opening and along a portion of left and right sides of the opening. The underside may define side edge vacuum passageways extending from the sides of the housing partially between the leading roller and the sealing strip towards the opening.

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.

An agitator is provided for a surface cleaning apparatus, the agitator including a dowel. The dowel defines an axis of rotation. A plurality of disks extends radially from the dowel to a scalloped peripheral edge. The scalloped peripheral edge includes a series of curved recesses, the series of curved recesses extending inwardly toward the dowel.

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 surface cleaning apparatus comprising a cleaning head and a brushroll. The cleaning head includes a cleaning head body having an agitator chamber including an opening on an underside of the cleaning head body. The brushroll is rotatably mounted to the cleaning head body such that a portion of the brushroll extends below the underside for directing debris into the opening. The brushroll includes an elongated body extending laterally between a first and second end region, a slit opening extending between the first and second end region, angular stationary teeth extending proximate to an edge of the slit opening, and a cutting blade configured to be at least partially received within the slit opening and to move laterally between the first and second end regions. The cutting blade bar includes teeth that are configured to engage with the stationary teeth to cut hair.

A surface cleaning apparatus includes a rotatably mounted brush associated with a dirty air inlet. A plurality of bristles extend outwardly from a radial outer surface of the rotatably mounted brush. At least some of the bristles are encased in a sheath.

A debris fin for a robotic cleaner dust cup may include a fin mount and an airflow body extending from the fin mount according to a divergence angle, the airflow body defining an airflow surface, the airflow body being configured to straighten fibrous debris entrained within air that is incident thereon.

A surface cleaning apparatus includes a rotatably mounted brush associated with a dirty air inlet. A plurality of bristles extend outwardly from a radial outer surface of the rotatably mounted brush. A leading hair blocking member is provided adjacent a forward rotational side of the bristles, and a trailing hair blocking member is provided adjacent a rearward rotational side of the bristles.

A surface cleaning apparatus includes a rotatably mounted brush associated with a dirty air inlet. A plurality of bristles extend outwardly from a radial outer surface of the rotatably mounted brush. A heating element that is positioned exterior to the brush core.

A surface cleaning apparatus includes a rotatably mounted brush associated with a dirty air inlet. A plurality of bristles extend outwardly from a radial outer surface of the rotatably mounted brush. A hair blocking member is positioned between a forward rotational side of the bristles and a rearward rotational side of the bristles.