Surface cleaning head with dual rotating agitators

A surface cleaning head comprising:

• a housing having a front side and back side, the housing including a suction conduit with an opening on an underside of the housing between the front side and the back side;
• a first roller rotatably mounted to the housing within the suction conduit and configured to rotate about a first rotation axis;
• a second roller mounted to the housing at least partially in a second roller chamber such that the second roller is located in front of the first roller, the second roller configured to rotate about a second rotation axis which is fixed relative to the first rotation axis;
• a wall disposed between the first roller and the second roller such that first roller does not contact the second roller;
• an inter-roller air passageway forming at least a portion of a flow path into the opening of the suction conduit in a region below the wall between first roller and the second roller;
• debriding protrusions extending from the wall, the debriding protrusions configured to contact an outer surface of the second roller below the second rotation axis to remove debris from the second roller and cause the debris to become entrained in the flow path through the inter-roller passageway, wherein at least one of the debriding protrusions or the wall contact the second roller such that at least a portion of the second roller above the second rotation axis is substantially outside of the flow path to the suction conduit;
• and
• a drive mechanism operatively coupled to the first roller and the second roller for rotating the first roller and the second roller at the same time.

A surface cleaning head comprising:

• a housing having a front side and back side, the housing including a first roller chamber, a second roller chamber, and a wall at least partially separating the first roller chamber from the second roller chamber, wherein the second roller chamber is located closer to the front side than the first roller chamber;
• a first roller mounted at least partially in the first roller chamber and configured to rotate about a first rotation axis;
• a second roller mounted at least partially in the second roller chamber and configured to rotate about a second rotation axis, the second roller being separated from the first roller by the wall, wherein a position of the first rotation axis is fixed relative to the second rotation axis;
• and
• a plurality of debriding protrusions extending from the wall and configured to contact an outer surface of the second roller below the second rotation axis without contacting the first roller;
• an inter-roller air passageway below the wall and between the first roller and the second roller and below the plurality of debriding protrusions, the inter-roller air passageway being in fluid communication with the suction conduit, wherein a portion of the second roller above the plurality debriding protrusions is outside of the suction conduit;
• and
• a drive mechanism operatively coupled to the first roller and the second roller for rotating the first roller and the second roller at the same time.