Abstract: A cleaning apparatus is disclosed for extracting a liquid from a surface. The apparatus includes at least one extraction head that has at least one aperture that is facing the surface to be cleaned. The vacuum cleaner includes a vacuum pathway situated between the at least one extraction head and a riser that is connected to a vacuum motor. The internal surfaces of the vacuum pathway are smooth and the vacuum pathway has certain dimensions and orientations that optimize the extraction of a liquid from a surface.

Abstract: A cleaning system is disclosed that includes a vehicle that has a cooling system for circulating a coolant, a diverter coupled with the cooling system that is configured to divert the coolant through a heat exchanger, a pump configured to pump a cleaning solution through the heat exchanger so that the heat exchanger heats the cleaning solution without mixing the coolant and the cleaning solution, and a rotary head cleaner in fluid communication with the heat exchanger for receiving the cleaning solution and applying the cleaning solution to a floor.

Abstract: A cleaning apparatus is disclosed for extracting a liquid from a surface. The apparatus includes at least one extraction head that has at least one aperture that is facing the surface to be cleaned. The vacuum cleaner includes a vacuum pathway situated between the at least one extraction head and a riser that is connected to a vacuum motor. The internal surfaces of the vacuum pathway are smooth and the vacuum pathway has certain dimensions and orientations that optimize the extraction of a liquid from a surface.

Abstract: An apparatus is disclosed for a rotary head cleaner. The apparatus includes a plurality of liquid extraction devices positioned radially on a floor-facing surface of a rotary head, a driveshaft disposed between a rotary motor configured to rotate the rotary head, and a housing disposed between the rotary motor and the rotary head for supporting a wheel, and a handle. The apparatus also includes an evacuation tank having a capacity sensor in communication with an evacuation pump, the capacity sensor configured to detect when a maximum desired capacity of evacuated liquids is reached, a vacuum motor connected with the housing and configured to provide a suction force to the liquid extraction devices to extract liquid from a floor to the evacuation tank, and wherein a weight of the rotary motor, housing, handle, retractable wheel, and vacuum motor is supported by the liquid extraction devices.