Cleaning apparatus with combing unit for removing debris from cleaning roller

A cleaning apparatus comprising:

• a housing having a front side and back side, the housing including a suction conduit fluidly coupled to an opening on an underside of the housing between the front side and the back side, the suction conduit fluidly coupled to a suction motor;
• a brush roller rotatably mounted to the housing;
• a leading roller mounted in the housing in front of the brush roller and spaced from the brush roller such that a position of the leading roller relative to the housing is fixed and the leading roller and brush roller do not contact each other;
• one or more drive mechanisms coupled to the brush roller and the leading roller configured to simultaneously drive the brush roller and the leading roller;
• a wall defining a portion of the suction conduit, the wall separating at least an inside upper portion of the leading roller from the suction conduit such that at least the inside upper portion of the leading roller is substantially outside of a flow path to the suction conduit;
• and
• a series of spaced combing protrusions extending from the wall, the combing protrusions configured to contact an outer surface of the lower portion of the leading roller between the rotation center of the leading roller and the bottom contact surface of the leading roller.