Abstract: The disclosure concerns a drip cleaning attachment for use in association with a suction cleaner. A housing with a suction nozzle also has supported, at its rear, a liquid drip nozzle which drips liquid toward the surface to be cleaned through a liquid distribution screen. A non-liquid, and particularly a solid rod, cleaning concentrate is supported on the screen. Some of the liquid hitting the screen migrates to the cleaning concentrate rod, dissolves some of it and the concentrate drips to the surface to be cleaned. A scrub brush may be disposed on the attachment for scrubbing the surface.

Abstract: An improved cleaning system is provided for use in cleaning upholstery such as carpet, drapes, furniture coverings, etc. The system includes a cleaning unit having a solution tank for receiving a selected cleaning solution, in combination with a pump and associated flow lines for delivering the cleaning solution to a cleaning tool. The system further includes a vacuum unit having a vacuum tank and associated pump and hose for vacuuming excess cleaning solution and debris from an upholstered surface. A multiported control valve interconnects the cleaning unit with the vacuum unit for facilitating removal of cleaning solution from the solution tank and associated flow lines as well as the cleaning tool.

Abstract: An apparatus and method, particularly adapted to clean fabrics, is disclosed. The apparatus includes a generally hollow head having two foam mixing chambers in close proximity to a vacuum chamber. Foam is generated adjacent the fabric to be cleaned by admixing pressurized air and a liquid foam-producing agent in the two mixing chambers. The air pressure directs the foam from the second mixing chamber towards the fabric. Two screens are used to control the consistency and application of the foam. Suction is simultaneously provided in the vacuum chamber, so that the foam is rapidly and continuously recovered. A brush means is positioned between the second mixing chamber and the vacuum chamber to further agitate the foam and fabric to be cleaned, and to help create a partial pressure when the moving foam is applied to the surface of a fabric.

Abstract: A cleaning assembly for cleaning electrically conductive, flexible contact springs around the perimeter of a closure in a shield erected to prevent the passage of unwanted electromagnetic radiation. A pressurized solvent supply system and a vacuum recovery system are mounted in portable cabinet and each is connected via a flexible hose to a hand held cleaning head. The cleaning head comprises a trigger operated spray gun having a support block with a narrow vacuum recovery slot located immediately adjacent to and extending downwardly from the nozzle of the spray gun. The vacuum recovery slot is connected via an internal cavity in the support block to the hose leading to a vacuum recovery container.

Abstract: A five in one floor cleaning machine supported on wheels intermediate the front and rear of the machine, there being adjacent the rear a clean water outlet, a scrub brush, a dirty water pickup nozzle, a clean rinse water outlet, and a dirty rinse water pickup nozzle. A pair of concentric chambers retain the clean and dirty water, the first chamber surrounding an inner chamber which is defined by a flexible spherical wall. As clean water empties from one chamber, and dirty water fills the other, the center of gravity stays substantially the same. The flexible wall of the inner chamber folds in under the force of surrounding increasing water pressure to decrease the size of the inner chamber as it empties of clean water.

Abstract: Dispensing within a liquid dispensing and suctioning system is controlled by pinching a flexible tube with a spring-biased actuator. The system includes a slidable extension for pulling the actuator to open the tube to dispense liquid to a surface to be cleaned. The system is assembled with a tubular wand of a wet/dry suctioning system. The liquid dispensing outlet from the system is a slot from which liquid exits. That outlet slot is disposed near to the suction inlet slot of the suctioning system. A rib which is located between the dispensing outlet and the suction inlet contacts the surface being suctioned for assuring that liquid reaches that surface and is not sucked up in the suction nozzle inlet reaching the surface.

Abstract: An improved integrated cleaning attachment for both dry vacuuming or wet cleaning carpets, uphostery or the like, for use with a powered cleaning unit the cleaning attachment comprising a three dimensional frame having a top and bottom, the cleaning attachment having extending therefrom vacuum carrier devices for conducting a created vacuum from a source of created vacuum to the three dimensional frame, the three dimensional frame having liquid supply mechanisms extending to a source of liquid supply away from the three dimensional frame, the liquid supply mechanisms having liquid distribution mechanisms connected thereto, the cleaning attachment having disposed therein proximate the bottom thereof at least two vacuum nozzles, each having an opening therein, each opening extending substantially horizontally above a surface being cleaned, the at least two vacuum nozzles and the vacuum carrier devices having therebetween established diverting mechanisms to divert the created vacuum conducted by the vacuum carri

Abstract: An improved carpet cleaning apparatus and method of use is disclosed. The apparatus consists of an internal combustion engine, the exhaust of which is directed through at least one heat exchanger for heating water/chemical cleaning fluid solution. A source of incoming water passes by a regulator into the inlet end of an engine driven pump, then through a balance pressure regulator valve positioned between the pump and the heat exchanger. A bypass valve intercepts a portion of the heated water after it passes by a thermostat downstream of the heat exchanger and directs this portion of heated water into a conduit leading back to the pump inlet thereby preheating the incoming water. A vacuum pump coupled to the engine draws a vacuum in a separate waste water recovery tank. A hand held carpet cleaner wand injects heated water transported under pressure through a flexible hose through an exhaust nozzle into the surface being cleaned.

Abstract: A cleaning system includes a liquid heating system utilizing heat from the cooling air and the exhaust gases of an internal combustion engine. A heat pump driven by the engine is utilized to extract heat from the cooling air and impart that heat to a first heat exchanger. A second heat exchanger is associated with the exhaust gases for extracting heat therefrom. Liquid to be heated is conveyed through said first and second heat exchangers.

Abstract: Apparatus for dispensing mixed water and cleaning liquid to a surface, including a flow regulator connected with the water supply for maintaining flow pressure, a rigid walled capsule which receives water from the flow regulator, a flexible walled liquid detergent container supported in the capsule and a mixer for mixing the water and the liquid detergent. The mixer includes a blade which pierces the previously sealed flexible walled liquid detergent container. A liquid detergent metering passage extends through the piercing blade. A metering pin may seal that passage, define its cross-section and be openable upon that passage being pressurized due to liquid pressure in the capsule. A second water metering passage communicates into the capsule external of the flexible container. Both of the metering passages communicate into a mixing chamber which in turn communicates with the dispensing nozzle for the mixed liquid. A drain connection to the capsule or to the outlet from the mixing chamber.

Abstract: A multiple function, modular vacuum cleaning system is described having a vacuum head which is releasably mounted on a waste recovery tank to form a first, portable wet/dry vacuum cleaning machine. The wet/dry vacuum cleaning machine in turn can be mounted on a cleaning solution tank to provide a second portable machine having wet extraction as well as wet and dry vacuum capabilities.

Abstract: The area which is to be cleaned is intially subjected to a pulsating jet of a liquid which penetrates through the area and which liquid contains a cleaning agent. Thereafter the area is rinsed by a pulsating jet of water which also penetrates through the area. Accordingly, the dirt gets dissolved and a mechanical working of the respective area is achieved simultaneously with a rinsing away of the dirt. Immediately thereafter the now wet area is penetrated by a hot pressurized air jet such to achieve a driving away of the dampness and accordingly a complete drying. If necessary, above sequence is repeated. Due to the speedy drying a forming of rings at the cleaned area is prevented and it is immediately possible to see if a visually complete cleaning has been achieved.

Abstract: A drivable floor cleaning machine with integrated fresh liquid compartment (10) and dirty liquid compartment (11) and with a cleaning rotor (19) designed to be supplied with cleaning liquid from the fresh liquid compartment (10). Regulation of the liquid feed to the rotor, with constant observation of the available volume of the liquid for supply to the cleaning rotor (19) are provided. Liquid feed regulation is controlled by an alternating current oscillating piston pump (31) (FIG. 8).

Abstract: The invention provides an endless rotary band cleaning device comprising an endless cleaning band mounted on three rollers disposed parallel to each other, namely: a drive roller, a guide roller and a secondary roller disposed in the space between the other two rollers. These rollers are arranged so that the lower part of the band follows a sinuous path comprising an upgoing path in which the band is washed and a downgoing path after which the band is impregnated with cleaning liquid. The upper part of the band situated between the drive roller and the guide roller serves as cleaning area.

Abstract: A cleaning apparatus which is of a compact construction to facilitate easy manipulation and portability includes a housing enclosing a fluid pump and a vacuum fan and mounting upon opposite sides a recovery tank and a stowage panel. The stowage panel is adapted to stow the flexible wand having a nozzle when not in use. Also, the high voltage motor driving the vacuum pump is adapted to also act as half of a transformer in order to pick off the lower voltage needed for the low voltage motor driving the fluid pump.

Abstract: An electrical household appliance for steam cleaning comprises, within a monocoque body, a steam generator having a boiler and a steam delivery conduit extending from the boiler, a suction device arranged to draw fluids including an electrical aspirator, a container for collecting the matter drawn, and a hose assembly including a suction conduit and a sleeve in the wall of the conduit containing the steam delivery conduit.

Abstract: A portable floor scrubbing machine, which preferably is battery-powered, may operate in two distinct modes: either as a walk-behind floor scrubber or as a manually-operated, scrub-and-recover system using a floor wand having a cleaning solution dispenser and convertible brush/squeegee at the working end of the wand for use in locations with difficult access.

Abstract: A method for removing asbestos-containing materials from substrates including a nozzle assembly for directing streams of pressurized steam to penetrate asbestos-containing material sufficiently to loosen binders therein so that the material can be easily dislodged from the substrate by a second stream of higher pressure steam. The nozzle assembly also includes a suction device having an inlet opening arranged adjacent steam ejection nozzles to draw-in asbestos particles and fibers entrained by the steam directed onto the asbestos-containing materials.

Abstract: A liquid extraction surface cleaning apparatus has an upwardly opening recovery tank and a top for the tank which contains a suction fan having a suction inlet opening into the tank. A wand connects to a source of cleaning liquid and has a dispensing and pickup head that deposits liquid on the surface to be cleaned in response to actuation of a control valve and picks up dirty fluid. A water and air separator has an arcuate surface transverse of the flow path of the air and spent liquid which gently separates them into separate streams by diverting the cleaning liquid laterally away from the air stream. A shutoff valve for preventing recovered liquid in the tank from entering the suction fan is mounted in the recovery tank rather than to the suction inlet to avoid dripping dirty liquid onto the floor when the cover is removed. A handle is mounted internal the tank and additionally serves to strengthen the tank sidewalls.

Abstract: A self-contained cleaning system using a truck mounted cleaning unit. The cleaning unit has a dual water tank system which is used to recirculate water through a propane hot water unit until the desired water temperature is obtained. The dual water tanks also permit the operator to bring his own supply of water to the job site. A dual pressure water unloading system allows quick switching from high to low water pressures while quick disconnects on the unloading system permit rapid removal for maintenance and/or replacement of the dual water pressure regulators used. The cleaning system is totally self-contained and may be operated without using the utilities of the customer.

Abstract: Cleaning process for removing material coated on the inner surface of an enclosed vessel. e.g., photographic emulsion, photopolymer, subbing layer, chemicals, etc., comprisingA. forming a substantially continuous high pressure stream of cleaning liquid, e.g., water, solvent,B. supplying the stream of liquid at a pressure, 4000 to 8000 psi to at least one fixed point in the vessel,C. dividing the stream into at least two opposed paths, andD. directing the liquid onto said surfaces in a 360.degree. solid angle using the fixed point as the angle vertex.The process is particularly useful in cleaning photographic emulsions but is also useful in removing other chemical materials and chemicals from an enclosed vessel.

Abstract: A vehicle for cleaning surfaces is provided with a first tank for storing cleaning liquid; a device for spraying liquid at a first pressure and a first flow rate onto the surface to be cleaned; a device for sucking the sprayed liquid towards a second tank; and a device for moistening the surface to be cleaned with liquid at a second pressure and a second flow rate. The second pressure is lower than the first pressure and the second flow rate is lower than the first flow rate. The spraying and sucking devices are located at the rear of the vehicle and the moistening device is located at the front of the vehicle.

Abstract: A carpet cleaning attachment, for use with existing carpet cleaning devices having a flexible attachment hose and a unit capable of extracting both wet and dry materials, the attachment comprising a hollow, elongated, hand-held wand configured at a connection end thereof for connection to the hose and provided at the opposite end with a suction nozzle for being moved across a carpet; a cleaning fluid reservoir mounted on the wand; and a cleaning fluid delivery system carried on the wand for delivering cleaning fluid from the reservoir to a region of the carpet in advance of the moving nozzle.

Abstract: A liquid extraction surface cleaning apparatus has an upwardly opening recovery tank and a top for the tank which contains a suction fan having a suction inlet opening into the tank. A wand connects to a source of cleaning liquid and has a dispensing and pickup head that deposits liquid on the surface to be cleaned in response to actuation of a control valve and picks up dirty fluid. A water and air separator has an arcuate surface transverse of the flow path of the air and spent liquid which gently separates them into separate streams by diverting the cleaning liquid laterally away from the air stream. A shutoff valve for preventing recovered liquid in the tank from entering the suction fan is mounted in the recovery tank rather than to the suction inlet to avoid dripping dirty liquid onto the floor when the cover is removed. A handle is mounted internal the tank and additionally serves to strengthen the tank sidewalls.

Abstract: The specification discloses an apparatus and method for cleaning printing screens or the like work surfaces in which solvent is pumped from a reservoir to the surface to be cleaned at a point closely adjacent a vacuum cleaning tool. The vacuum cleaning tool is connected by a vacuum line to the reservoir and vacuum means are provided to draw a vacuum on the reservoir whereby solvent is delivered to the surface to be cleaned and residue laden solvent is vacuumed off the surface to be cleaned through the vacuum tool and vacuum line. A clean up tray and light panel are provided to facilitate the clean up operation. A control assembly comprising independently or simultaneously actionable foot pedals for control solvent feed and vacuum is provided.

Abstract: Also proposed is apparatus for cleaning hard and soft surfaces by simultaneous application thereto of liquid and vacuum using a tool and which is equipped with a conversion device to permit dry vacuum cleaning with entrainment of dry soil in the liquid for subsequent collection in a soil and liquid vessel. The device (FIG. 4) comprises a 2-way valve (7) by which liquid flowing through a first pipe (5) can be caused to flow alternatively to a head (1) of a tool, or, through at least one branch pipe (9) to a second pipe (6) or pipe insert (11) by which suction is applied to the head (1) of the tool to entrain the dry soil flowing therein. The branch pipe or pipes normally terminate in one or more spray nozzles and may be located at various different positions in the path of flow of the dry soil induced by vacuum.

Abstract: A fluid control valve includes a deformable conduit for fluid with a valve control port at a point of fluid entry to the conduit. The valve control port includes a spring-biased device for keeping the port closed to fluid in an unactuated valve state. A support element is disposed within the conduit downstream of the valve control port. The support element also permits fluid flow therethrough. A trigger mechanism is disposed within the conduit between the valve control port and the support element; the mechanism includes an elongated bar having a deformable irregularity. The bar extends from the support element to the port closing device, with the end of the bar contacting the port closing device with a low level of force in an unactuated state of the valve.

Abstract: This invention is concerned with a machine and method for automatically removing a curing film or membrane from a concrete floor surface and etching that surface in preparation for applying a surface coating and doing this in less time than has heretofore been required for such floor preparation.

Abstract: This invention is concerned with a machine and/or system as well as a method of operation and an assembly whereby a sweeping unit may be quickly converted into a scrubbing unit and vice versa. The system is capable of operation either in a sweeping mode or a scrubbing mode and is also adaptable to include a vacuum wand assembly when the unit is to be operated in its sweeping mode.

Abstract: A mobile rug or carpet cleaner is provided with a support housing having front and rear wheels mounted so that the unit is tilted about the housing axis of the front wheels to engage and disengage a cleaning head with the carpet to be cleaned. The cleaner includes a fluid delivery system which provides fluid flow to the cleaning head, an auxiliary cleaning head and a spotter. The fluid delivery system utilizes a pump having an open conduit which continuously recycles cleaning fluid to a reservoir. The continuous recycle allows a solenoid valve in a line transporting fluid to the cleaning head spray nozzles to be abruptly closed without subjecting the entire fluid delivery system to a sudden, potentially damaging increase in fluid pressure. An automatic drain system utilizes a vacuum line to direct spent cleaning fluid to a removable waste tank for disposal. Suction can be selectively directed to the cleaning head or to the auxiliary head.

Abstract: A liquid extraction surface cleaning apparatus has an upwardly opening recovery tank and a top for the tank which contains a suction fan having a suction inlet opening into the tank. A wand connects to a source of cleaning liquid and has a dispensing and pickup head that deposits liquid on the surface to be cleaned in response to actuation of a control valve and picks up dirty fluid. A water and air separator has an arcuate surface transverse of the flow path of the air and spent liquid which gently separates them into separate streams by diverting the cleaning liquid laterally away from the air stream. A shutoff valve for preventing recovered liquid in the tank from entering the suction fan is mounted in the recovery tank rather than to the suction inlet to avoid dripping dirty liquid onto the floor when the cover is removed. A handle is mounted internal the tank and additionally serves to strengthen the tank sidewalls.

Abstract: A vacuum power booster with automatic waste liquid discharge for a water vacuum extraction apparatus. A first vacuum source is coupled to a first waste liquid storage tank in a main housing, typically vehicle mounted. A second, auxilliary vacuum source is mounted in a mobile housing remotely located from the first housing which contains a second auxilliary waste liquid storage tank. A vacuum pickup implement is coupled to the mobile waste liquid storage tank for extracting and transmitting dirty liquid from the surface being cleaned to the second waste liquid storage tank. The liquid in the second waste liquid storage tank is automatically discharged and transmitted to the first waste liquid storage tank when the level of such liquid reaches a predetermined height or level within the second waste liquid storage tank.

Abstract: A washing apparatus for the bung area of a drum is described which comprises a cover having a peripheral skirt portion comprising a circumferential water conduit containing at least one inwardly directed nozzle to spray water at the area of the bung of the drum for the cleaning of that area of the drum. Water inlet means allow for the infusion of water into the conduit and then through the nozzle or nozzles for the cleaning of the bung area of the drum. A vacuum source is connected to a pipe in an opening in the central portion of the cover to remove washing water supplied to the area of the bung of the drum by the nozzle means within the cover.

Abstract: A machine is provided enabling a workman to spray discharge heated dyeing liquid upon a carpet and to immediately thereafter vacuum excess dyeing liquid from the carpet. The dyeing liquid spray discharged onto the carpet is pumped from a receptacle containing dyeing liquid and into which the excess dyeing liquid vacuumed from the carpet is discharged. A pump is provided for pumping liquid from the receptacle to a spray discharge jet nozzle supported from a vacuum nozzle and a heater is also provided for heating the liquid pumped from the receptacle to the spray jet nozzle. Further, filter structure is provided and operative to filter the excess dyeing liquid vacuumed from a carpet and discharged into the dyeing liquid receptacle.

Abstract: A cleaning device comprising means for oscillating a manifold upon which is mounted at least one spray nozzle pointed in a generally downward direction. The spray nozzle then oscillates about an axis parallel to the surface to be cleaned. The means for oscillation may be electric (AC or DC), mechanical or hydraulic where the driving motion may be linear, rotational or oscillating. The hydraulic system is driven by the cleaning solution. Brushes or other mechanical devices may be integrated with or attached to the manifold or other areas of the cleaning device. A vacuum manifold is provided to remove cleaning solution and contaminates or dirt.

Abstract: A device for cleaning large-area textile coverings, especially carpets and carpeted floors. The device has a rinse chamber that can be placed against the textile covering and slid over it, is open at the bottom, and has walls (8.11-8.12 & 8.21-8.22) that are double all the way around. The continuous space (8.3) between the outer and inner wall communicates with a vacuum space through a suction connection (12.1), creating an essentially annular suction nozzle that is open at the bottom. The rinse chamber rests against the textile covering (7.2) on at least the bottom edge of its outer wall, which is provided with sealing surfaces (8.112 & 8.122). Spray nozzles (13) and ultrasonic generators (16) are positioned in the space inside the rinse chamber (8). The water level (W) inside the rinse chamber (8) is regulated to keep the spray nozzles and ultrasonic generators immersed in the water. The dirty water emerging at the bottom edge of the inner wall (8.21 & 8.22) is constantly suctioned off.

Abstract: In a carpet cleaning machine with a machine housing (1), two containers (4,5) for fresh and used cleaning liquid respectively and flexible tubing (2,3) connecting the machine housing (1) to at least one liquid ejection nozzle (not shown) and a suction mouthpiece (not shown), each of the two containers (4,5) is removably supported in a space (14) above a substantially horizontal portion (7) of said housing (1) and close to a substantially vertical partition portion (8) of said housing (1), each container preferably being supported by plugs (11) extending outwards and upwards from each side of the partition portion (8) and cooperating with sockets (12) recessed into the sides (10) of the containers adapted to face the partition portion (8).

Abstract: A single unit readily portable carpet and rug cleaning apparatus receives water directly from any spigot into a high pressure pump without the necessity for a clean water holding tank. Shampoo or cleaning concentrate from an outside container is delivered by siphoning to the incoming water stream being delivered to the high pressure pump. The high pressure cleaning liquid is delivered through a high pressure line extending along a vacuum wand directly onto the carpet or rug through a high pressure nozzle close to floor level. Simultaneously, water and dirt are withdrawn from the carpet or rug through a suction head and delivered through the vacuum wand and a vacuum hose to a dirty water holding tank within the apparatus by the action of twin vacuum motors. When the recovered dirty water reaches a certain level in the holding tank, a float actuates a switch causing the dirty water to be pumped from the holding tank into any convenient drain, commode, laundry tray or sewer.

Abstract: A portable extractor according to the teachings of the present invention is taught including a tool assembly pivotally mounted on a main body assembly. The portable extractor is supported on the floor by a set of wheels on the tool assembly and by a set of wheels on the main body assembly. The tool assembly applies a cleaning solution to the floor, with the cleaning solution being drawn from a supply tank of the main body assembly. The tool assembly also extracts the cleaning solution from the floor, with the extracted cleaning solution being deposited in a storage tank of the main body assembly. In a preferred form for cleaning carpeted floors, the tool assembly further includes a powered rotary brush for agitating the carpet. In operation, the tool assembly pivots with respect to the main body assembly between working and transport modes automatically when the portable extractor is pulled or pushed on the floor.

Abstract: In connection with a surface material cleaning apparatus, a tank of cleaning fluid, an outlet line from the tank to a cleaning head, a suction pump carried by the tank recovering cleaning fluid from the cleaning head, a pump feeding the outlet line from the tank, a bleed line from the pump passing liquid into and through the filter under a relatively high pressure creating a motion of liquid through and about the wall of the filter maintaining the filter wall in a relatively unclogged condition, the cleaning fluid in the tank being recycled for cleaning purposes through the filter at a relatively low pressure.

Abstract: A household appliance for cleaning generic surfaces comprises a wheel mounted working head incorporating a steam generator and an air liquid part in communication with a suction conduit. This household appliance is particularly useful for cleaning floors, carpets, and the like.

Abstract: An apparatus for spraying a shampoo solution through a shampoo solution supply conduit to a nozzle as the nozzle is moved over an area of upholstery, carpet and the like while dirty shampoo solution is drawn back through the nozzle to a vacuum tank by vacuum suction. A mechanism is provided to apply the vacuum suction to the shampoo solution supply conduit at the end of the cleaning operation to effectively clear the shampoo solution supply conduit and nozzle of the shampoo solution.

Abstract: A self-contained portable vacuum cleaning machine provides vacuum, hydro-extraction and pressure washing capability and incorporates a vacuum blower head which contains two blowers and (1) is adapted for serial or parallel vacuum blower operation and (2) incorporates a double wall construction which provides cooling air flow for the vacuum motors and defines an exhaust channel for the vacuum blowers which suppresses exhaust noise.

Abstract: A cleaning head for a surface covering material cleaning machine made up as a nozzle embodying a pair of chambers separated by a transverse plate member, one chamber being a cleaning chamber having a jet stream of cleaning fluid with an incoming air stream comingling therewith to form an aerated stream, the chambers flaring forwardly being coextensive at their forward ends and the cleaning chamber decreasing in height forwardly, the chamber communicating at the free end of the plate member, the end portion of the plate member having a terminal portion the width of said chambers whereby the other chamber forming a suction chamber draws upon the cleaning fluid causing it to accelerate substantially horizontally in engaging the surface portion and/or passing through the body portion of the material being cleaned and then being withdrawn upwardly about the end of the plate member to pass into and become discharged through the suction chamber.

Abstract: This is a floor maintenance machine in the nature of a carpet extractor and a method of operating it whereby it may be operated either as a single cycle unit or a recycling unit. It also includes a method and apparatus for converting a carpet extractor so that the running time between solution changes is greatly extended. There is also a back flushing arangement of the filter which extends running time. The unit also has a liquid surge control. It also includes or encompasses a convertability cart which may function in several ways.

Abstract: A compact, self-contained central vacuum cleaning machine has expandable vacuum suction and pressure capacities and variable vacuum suction. The machine performs a multiplicity of cleaning operations including dry vacuuming, wet vacuuming, hydro-extraction vacuuming and pressure washing.

Abstract: A combination carpet vacuum, cleaning, and dyeing apparatus comprises a powerbase unit which houses vacuum and water pressure systems, electrical circuitry, and mixing devices to supply a remote operator-controlled powerhead unit with various solutions of water and other chemicals. The powerhead unit carries a 24 volt D.C. motor and worm gear transmission which drives a pair of horizontal counter rotating brushes; a floating vacuum head; electronic circuitry; and selectable sprayer manifolds for carpet cleaning or dyeing operations. Switches in the pivotal handle of the powerhead provide the operator with manifold selection, motor control, and remote vacuum control. A clear plastic pick-up tube on the powerhead handle and a clear dome on the powerbase unit allow the extraction process to be observed. The powerhead unit is releasably connected to the powerbase unit by a vacuum hose, a pressure line, and an electrical cord.

Abstract: A control valve for variably controlling the mixing and dispensing of two fluids and which valve has a primary valve and a slave valve interconnected to the primary valve and responsive to one of the fluids to actuate the primary and slave valves to either a valve closed or valve open position whereat in the latter position the mixture and dispensing of both fluids is accomplished.

Abstract: Apparatus for wet cleaning carpet is disclosed of the type which utilizes a wet-dry tank unit (C) having a vacuum hose (56) connected to the vacuum tank and a vacuum head (52). The apparatus includes a portable base (A) for moving the apparatus over the floor having a socket (12) formed in the portable base. A cleaning solution tank (B) for containing a cleaning solution includes a lower attachment collar (D) which fits in the socket (12). A liquid pump (40) is carried in a pump housing (30) formed in solution tank (B). An upper attachment recess (66) formed in solution tank (B) receives a base (74) of the vacuum unit (C). The portable base (A), solution tank (B), and vacuum unit (C) are snugly fitted together by means of a deep socket (12) and recess (66) to provide an integrally assembled structure. By housing the pump (40) low to the floor in the portable base (A), a low center of gravity and stable weight distribution is provided.

Abstract: The automatic vacuum recyclable system for chemically-thermo cleaning tanks nd bilges primarily comprises a makeup, storage and heating unit, a pressure pumping and spraying unit, a vacuum and separation unit, and a filtration unit. The system functions to clean tanks and bilges without the need for a work crew to be inside during actual surface cleaning operations.