Abstract: The cleaning apparatus has a body with two wheels on opposite sides of the body which are driven by two electric motors for moving the body forward or rearward or for turning the body. A cleaning device which uses pressurized air is supported by the body for providing a cleaning function for cleaning the inside of the duct. The cleaning device is supported by a support member. Another electric motor is employed for moving the support member upward and downward. Lights and a video camera are located at the front of the body for allowing the duct to be monitored and inspected by way of a remote video screen. Electrical leads are coupled to the motors to the lights and to the camera for remote control purposes. A conduit is coupled to the cleaning device for supplying air under pressure to the cleaning device.

Abstract: The cleaning system has a head to which water is applied for cleaning carpets, etc. The head has a water nozzle for injecting hot water on the carpet, etc. and a vacuum inlet with vacuum hose coupled to a vacuum container. A lid having an outlet is provided for covering the top of the container. A hose is connected to the lid outlet and to a vacuum blower. A lid conduit forming the lid outlet extends through the lid with inlet openings formed through the lower portion of the outlet conduit. A chamber extends from the lower side of the lid surrounding the lower portion of the lid conduit with a bottom wall located below the lower portion of the lid conduit. A plate is connected to the bottom of the lid conduit and extends outward forming a dead space between the plate and the bottom wall of the chamber. An opening is formed through the side wall of the chamber for passage of air from the container into the chamber and to the vacuum device.

Abstract: A main hose has one end which supports a hub and outward extending tubular members for rotation. Said one end of the main hose has inlet openings and the other end is coupled to a vacuum blower. A second smaller diameter hose extends into the main hose and has one end connected to the hub and the other end connected to a compressor. The compressor is operated to inject air through the second hose and through the rotatable tubular members for rotating the hub and the tubular members and for injecting air outward through the tubular member onto the walls of the duct to be cleaned. The vacuum blower is operated to form reduced air pressure in the main hose to withdraw the loosened material by way of the inlet openings at said one end and through the main hose by way of the vacuum blower.

Abstract: The cleaning apparatus in one embodiment is formed by a housing member having a first flexible hose coupled to a first end and a smaller diameter second flexible hose coupled to a second opposite end. A turbine is supported for rotation within the housing member. A flexible drive shaft extends through the second flexible hose and has one end coupled to the turbine for rotation therewith and a second end extending out of the other end of the second flexible hose with a brush coupled thereto. An air blower, which preferably is operated in the vacuum mode, is coupled to the first flexible hose for moving air through the second flexible hose, the housing member, and the first flexible hose for causing the turbine and hence the flexible drive shaft and brush to rotate for cleaning the wall of an air duct with the brush and for removing dust and other matter from the duct. In another embodiment of the apparatus, a separate air motor is employed to rotate the flexible drive shaft and hence the brush.

Abstract: The cleaning apparatus includes a support device for supporting a spray member for receiving and spraying hot liquid onto a surface to be cleaned and a vacuum head for withdrawing liquid and material from the surface by reduced pressure. Also included are a container, a manifold haivng first and second chambers, a pump, and a heat exchanger. The heat exchanger inlet is coupled to the first chamber and a flexible high pressure liquid conduit is coupled to the heat exchanger outlet and to the spray member by way of a control valve. The pump inlet is coupled to the second chamber and the pump outlet is coupled to the first chamber. A return conduit is coupled from the flow control valve to the second chamber. A pressure adjustment valve is coupled to the two chambers for controlling variations of the pressure in the two chambers and hence at the pump outlet.

Abstract: The cleaning apparatus has a liquid spray device and a vacuum head attached to a movable support member. A container is provided for holding a supply of liquid. A liquid pump has its inlet coupled to the container and its outlet coupled to a heat exchanger. The outlet of the heat exchanger is coupled to a high pressure liquid conduit which is coupled to the spray device by way of a flow control valve. A return conduit is coupled from the flow control valve to the container. Two electrically actuated vacuum blowers are provided with the first blower having its inlet coupled to a vacuum tank and its outlet coupled to the inlet of the second blower. The vacuum head is coupled to the vacuum tank by way of a conduit. A switch is provided for completing a circuit to the first blower and by way of a time delay circuit to the second blower whereby when the switch is closed, the first blower begins to operate and after a time delay, the second blower begins to operate.

Abstract: The cleaning apparatus is formed by a housing member having a first flexible hose coupled to a first end and a smaller diameter second flexible hose coupled to a second opposite end. A turbine is supported for rotation within the housing member. A flexible drive shaft extends through the second flexible hose and has one end coupled to the turbine for rotation therewith and a second end extending out of the other end of the second flexible hose with a brush coupled thereto. An air blower, which preferably is operated in the vacuum mode, is coupled to the first flexible hose for moving air through the second flexible hose, the housing member, and the first flexible hose for causing the turbine and hence the flexible drive shaft and brush to rotate for cleaning the wall of an air duct with the brush and for removing dust and other matter from the duct.

Abstract: The cleaning apparatus is formed by a housing member adapted to be inserted into an air duct and which has two spaced apart ports for providing an air flow path through the housing member. A flexible hose has one end coupled to one of the ports and is employed for moving the housing member in the air duct and for providing a passage for the flow of air from or to the housing member. A turbine formed by blades fixedly connected to a shaft is supported within the housing member for rotation about the shaft upon passage of air through the housing member by way of the two ports. An off centered weight is coupled to the shaft for rotation with the turbine for causing the turbine and hence the housing member to vibrate upon rotation of the turbine whereby the housing member may vibrate against the inside wall of the air duct to loosen dust and other matter from in the duct and to facilitate movement of the housing member in the duct.

Abstract: A method of dry cleaning fabrics, for instance, draperies or clothing, in situ, by forcefully infusing the fabric in the open atmosphere with special fast-acting, versatile dry cleaning solvent so as to dissolve and suspend various stains and soils in the fabric, even though firmly set due to age, and promptly drawing ambient air and droplets of soil-laden solvent by suction into a closed waste and suction chamber where the soil is deposited in the form of a sludge, while the carrier air and solvent is discharged to the atmosphere. A special, highly effective, fast-acting, nonflammable and nontoxic solvent is provided.