Abstract: A cyclone dust collecting device, for use in a vacuum cleaner, includes a housing defining therein a cyclonic air flow chamber. A dust collection chamber is disposed under the cyclonic air flow chamber and a partition wall is disposed between the cyclonic air flow chamber and the dust collection chamber. An opening and at least one ventilation hole are provided in opposite sides of the partition wall, respectively, so that a part of air and dust vortically moving in the cyclonic air flow chamber are introduced into the dust collection chamber through the opening and the air in the dust collection chamber flows back into the cyclonic air flow chamber through the ventilation hole.

Abstract: The vacuum cleaner having a suction port assembly and a dust collecting chamber includes a first air inlet path to connect the suction port assembly and the dust collecting chamber, a second air inlet path to connect a lower end of the dust collecting chamber and a vacuum generator, a cyclone dust collecting device detachably mounted in the dust collecting chamber so that an upper end is connected to the first air inlet path and a lower end is connected to the second air inlet path, and a filtering chamber integrally formed with the cyclone dust collecting device and having a filter member detachably disposed. As the second air inlet path requires less space, it is feasible to easily manufacture the vacuum cleaner and maintain the filtering chamber and the cyclone dust collecting device at a time. Therefore, maintenance of the vacuum cleaner becomes more convenient.

Abstract: A cleaning machine for cleaning a surface is provided. The cleaning machine includes a base assembly that moves along the surface and a liquid distribution system associated with the base assembly for distributing the cleaning solution to the cleaning surface. A suction nozzle assembly is mounted to the base assembly and includes a front nozzle portion and a rear nozzle portion. The front nozzle portion defines a fluid flow path having an inlet opening and an outlet opening and the rear nozzle portion defines a fluid flow path having an inlet opening and an outlet opening. A suction source is in fluid communication with the suction nozzle for applying suction to draw the cleaning solution and dirt from the surface and through the suction nozzle assembly. The fluid flow path of the front nozzle portion is closed in response to the base assembly moving in one of the forward direction and rear direction.

Abstract: The disclosed cleaning device has a suction unit that can be used to take in liquid, a tank that can be used to hold the liquid, a mouth that can be used to pour liquid from the tank, and wheels that form a base. It also has a pivot that can be used to rotate the tank between a normal use position and a pouring position. The pivot is arranged so that in the pouring position, the center of gravity of the unit remains within the horizontal range of the base, even as the mouth of the tank falls outside the horizontal range of the base. As shown, the pivot is 12 inches above the floor and within the horizontal range of the base. In this position, it remains laterally between the center of gravity of the tank and the edge of the base when the tank is emptied.

Abstract: The present disclosure provides a filter cage having an improved flow path suitable even for restricted flow regions of a float container in the cage. The filter cage departs from generally accepted structural considerations and provides flow paths to one or more sides of the cage outside the restricted flow regions of the float container, but within the cross-sectional area of the cage structure. In one exemplary embodiment, the cage is oval-shaped with a cross-sectional area defined by a major and minor axis. A restricted flow region, such as the float container, encompasses a cross-sectional area corresponding in size to a cross-sectional area defined by the minor axis of the oval-shaped cage. The remaining portion of the cage cross-sectional areas provides one or more flow paths outward from the float container in the direction of the major axis of the cage.

Abstract: An autonomous floor cleaning robot includes a transport drive and control system arranged for autonomous movement of the robot over a floor for performing cleaning operations. The robot chassis carries a first cleaning zone comprising cleaning elements arranged to suction loose particulates up from the cleaning surface and a second cleaning zone comprising cleaning elements arraigned to apply a cleaning fluid onto the surface and to thereafter collect the cleaning fluid up from the surface after it has been used to clean the surface. The robot chassis carries a supply of cleaning fluid and a waste container for storing waste materials collected up from the cleaning surface.

Abstract: A cyclone dust collecting device using a corona discharge is provided. The cyclone dust collecting device includes a cyclone chamber rotating air drawn in from the outside to separate contaminants from the air, a discharge pipe guiding the air separated from the contaminants to the outside of the cyclone chamber and including a discharge electrode part with at least a part made of a conductive material and a power supply unit supplying a power to the discharge electrode part for the discharge electrode part to perform a corona discharge.

Abstract: A multi-use, dual power mode vacuum cleaner (10) that can be used as an upright vacuum cleaner or as a portable, hand-carried vacuum cleaner comprises a detachable vacuum module (16) selectively mounted to an upright handle assembly (12). The detachable vacuum module (16) includes a motor and fan assembly (64) for creating a working air flow, a particle separator (48) for separating dirt form the working air flow and a portable power source (104) for providing power to the motor and fan assembly (64). The particle separator can be a cyclone separator (48) or a bag separator.

Abstract: An upright vacuum cleaner is provided having a dirt collecting system with a downwardly pivoting lid for disposing of the collected dirt. The dirt collecting system has a latching arrangement for securing the pivoting lid into the closed position. A release member on the sidewall of the dirt collecting container is in operative engagement with a latching arrangement for releasing the pivoting lid from the closed position when the dirt collecting container is removed from the cleaner housing. The latching arrangement utilizes a slide member that traverses the underside of the pivoting lid. The slide member is biased into the latched position by a pair of resilient members. A pair of torsional springs are disposed in the hinges pivotally connecting the pivoting lid to the sidewall of the dirt collecting container to bias the pivoting lid into the open position when the release member is depressed.

Abstract: A complex type cleaner includes: a cleaner body having at least one of a dust collecting container for storing dust or foreign materials and a water collecting container for storing contaminated water; and a suction head having a dust suction opening disposed at a lower portion of the cleaner body and sucking dust when the cleaner performs a vacuum cleaning and a suction head having a suction nozzle for sucking contaminated water when the cleaner performs a water cleaning. By implementing both vacuum cleaning function for sucking dust and water cleaning function in one cleaner, a cost can be reduced, users' convenience can be improved, and the cleaner can be conveniently kept in storage.

Abstract: An improved water filter vacuum cleaner includes a vacuum body which contains a dust chamber and a dust collector assembly in the dust chamber that contains filter water. The dust collection assembly includes a dust collection seat and an upper cap. The dust collection seat is divided by a partition to form a filter chamber and an airflow chamber that communicate with each other. The airflow chamber has an airflow duct connecting to the filter chamber. The vacuum body has a suction assembly to generate a suction airflow which sucks suction articles through the airflow duct into the filter chamber. The suction airflow generates oscillating moisture to trap the suction articles. The cleaned suction airflow passes through the upper cap and a guiding member communicating with the upper cap to the suction assembly to form output airflow in the suction assembly to be discharged through an air outlet.

Abstract: An automatic ground surface dryer, system and method for automatically, conveniently, quickly and effectively drying a ground surface without the need for manual labour and capable of quickly drying a large ground surface is described. The automatic ground surface dryer has a frame, a drying apparatus mounted to the frame, a support for the frame to facilitate movement of the frame over the ground surface, a motor coupled to the frame to move the frame over the ground surface, and a controller coupled to the motor and the drying apparatus to drive the motor and to operate the drying apparatus in response to a rainfall data signal from a rainfall data gathering system which gathers rainfall data.

Abstract: A vacuum cleaner device containing a water filter and a filter shroud. The filter shroud contains an outer wall having a gap for the passage of water and air, an inner wall placed near the gap and coaxial with the outer wall, and a dry filter at the top of the device. Contaminated air enters the filter shroud near the center of the inner wall. Most of the contaminants are filtered out of the air by the water. The air passes along the inner wall, through a channel between the inner and outer walls, through the gap in the outer wall, and up through the dry filter. The air reaching the dry filter has lost all of the water and most of the contaminants. The configuration of the filter shroud prevents the dry filter from becoming wet and losing its effectiveness.

Abstract: A cyclone dust separating apparatus and a vacuum cleaner with the same is disclosed. The cyclone dust separating apparatus includes a first cyclone for separating large dust particles from air, a plurality of second cyclones for separating minute dust particles from air via a centrifugal force after dust separation at the first cyclone, and a cover disposed on an upper portion of the first cyclone and the second cyclones. The cover includes a conical guide formed at a lower center to guide air discharged from the first cyclone into the second cyclones. Because drawn-in air is repeatedly cleaned by a plurality of cyclones, the cyclone dust separating apparatus can be provided with a compact structure, can provide an effective cleaning operation, and can prevent deterioration of a suction force.

Abstract: An electric vacuum cleaner including a suction tool main body, a vacuum cleaner main body which communicates to the suction tool main body, and a dust colleector provided at the vacuum cleaner main body. The dust collector includes a dust collection container, a tubular body disposed at substantially a central portion of the dust collection container in a vertical direction, a collar portion which is formed to project towards an inner wall on the dust collection container, vent holes which are piercingly provided at the tubular body, and an intake which opens at the dust collection container. The flow passage of air which extends from the central portion of the tubular body on a bottom portion of the dust collection container to the vent holes can be made long so that it is possible to exhibit the effect that the amount of stirred up dust reaching the vent holes can be reduced.

Abstract: A vacuum cleaning machine comprising a housing that includes a suction nozzle that is adapted to move along a surface to be cleaned and a receptacle coupled to the housing for holding particles removed from the surface during operation of the vacuum cleaning machine. The receptacle is provided with an external opening for the introduction of debris particles therein which are not ordinarily removable from the surface through the suction-generating apparatus. The vacuum cleaning machine can be an upright vacuum cleaning machine and the receptacle can be mounted to the handle. The receptacle can also be incorporated into a dirt cup in a cyclone separator module.

Abstract: A vacuum cleaner includes a housing, a nozzle inlet, a suction generator and a dirt cup. The dirt cup includes a dirt collection chamber, an inlet and an open end. Additionally, the vacuum cleaner includes a filter assembly. The filter assembly includes a filter housing defining a filter chamber. The filter housing and chamber mate with the open end of the dirt cup. A filter element is held in the filter chamber on a ribbed support.

Abstract: A drain fitting has a unitary body with a lower section and an upper section upstanding from the lower section. The lower section encompasses a space and is open to the drain line to be cleaned. The upper section has a side wall and an inner wall which forms a channel. The inner wall encompasses a through passage which is open to the space encompassed within the lower section. A line of a given diameter can thus be received and maintained around the side walls. Another line of different diameter can be received and maintained within the channel and lines of other different diameters can be maintained within the through passage.

Abstract: A vacuum cleaner is provided including a housing, a nozzle inlet, a suction generator carried on the housing and a dirt cup carried on the housing. The dirt cup includes a bottom wall, a sidewall, a dirt collection chamber, an air inlet to the dirt collection chamber in the bottom wall and an air outlet from the dirt collection chamber. A method of directing an airstream in a dirt cup is also provided. That method includes directing the airstream upwardly through the dirt cup in an air inlet conduit, discharging the airstream from the air inlet conduit into the dirt cup in a substantially hemihorn torus shape and exhausting the airstream from the dirt cup.

Abstract: A vacuum cleaner includes a housing, a nozzle inlet, a suction generator carried on the housing and a dirt collection assembly carried on the housing. The dirt collection assembly includes (a) a dirt vessel having an outer sidewall, an inner sidewall, a bottom wall, an inlet and an open end and (b) a filter assembly including a base that covers the open end of the dirt vessel, a manifold housing, a filter chamber and a filter element held in the filter chamber.

Abstract: A vacuum cleaner includes a nozzle assembly and a canister assembly connected to the nozzle assembly. The nozzle assembly includes an inlet. A suction generator is carried on one of the nozzle assembly and canister assembly. A cyclonic separation chamber is carried on one of the nozzle assembly or the canister assembly. The cyclonic separation chamber includes an inlet and first and second outlets. A dirt collection vessel has a dirty air inlet in fluid communication with the first outlet of the cyclonic separation chamber and a discharge outlet in fluid communication with the suction generator.

Abstract: A disposable open bag for a power tool such as a Shop-Vac cleaner has a mounting plate with an opening for receiving debris from the intake of the power tool. The mounting plate is also provided with a vent opening(s), e.g., to prevent the bag from closing in on the air filter and blocking the airflow. The said bag provides a cleaner and more convenient means of collection of the debris, leaves, and particulate matters directly into the bag.

Abstract: The cleaning apparatus includes a base portion for movement along the surface and a handle pivotally connected to the base portion. A recovery tank is removably mounted to the handle and has a front end. A lid covers the recovery tank and has an inlet opening for directing dirt and liquid into the recovery tank and an outlet opening located at the front end of the recovery tank. A suction nozzle is secured to the base portion and fluidly communicates with the inlet opening of the lid. A suction source fluidly communicates with the outlet opening for drawing dirt and liquid from the surface through the suction nozzle and into the recovery tank. A partition device is positioned between the outlet opening and the inlet opening and extends down within the recovery tank a sufficient distance to prevent the liquid from flowing from the inlet opening to the outlet opening.

Abstract: According to certain embodiments of the invention, a pressure washing system delivers a cleaning fluid under pressure to a surface to be cleaned, and includes a fluid pump unit for supplying the fluid to the surface. A fluid collector captures wastewater runoff of the cleaning fluid on the surface to be cleaned. The vacuum pump unit withdraws the captured waste fluid from the fluid collector.

Abstract: An upright-type electric vacuum cleaner including a vacuum cleaner main body with at least a dust collector and an exhaust outlet, and a suction body provided at a lower front of the vacuum main body. The dust collector is disposed on a rearward side of the vacuum cleaner main body and wherein the exhaust outlet is disposed on a front surface side of the dust collector. The area of the exhaust outlet can be made large without being interfered by the dust collector.

Abstract: An upright suction cleaner having a base, a body pivotally mounted on the base, a suction device, and a dirt separation system. The dirt separation system has a first and second dirt separators. the first of which may include an air-pervious shroud having a plate extending from it. An airflow path extends from the base, through the separation system, and into the suction device. A dirt collecting system is mountable to the body, and includes a first chamber to receive dirt separated by the first dirt separator, and a second chamber to receive dirt separated by the second dirt separator. The chambers are adjacent one another when mounted to the body. A tube forming part of the airflow path between the dirt separation system and the suction device is selectively mountable adjacent the dirt collecting system. An elevator assembly is provided to attach the dirt collecting system to the body.

Abstract: Disclosed are a cyclone vessel dust collection and a vacuum cleaner including the same. The cyclone vessel dust collector comprises a cyclone vessel main-body including a primary cyclone vessel unit for separating dusts from dust containing air, and one or more secondary cyclone vessel units for separating dusts from the air passing through the primary cyclone vessel unit, the secondary cyclone vessel units being arranged to surround at least a part of the primary cyclone vessel unit; and a dirt collection bin for receiving dusts or the like separated by the cyclone vessel main-body, wherein the cyclone vessel main-body has an outer circumference with a non-constant radius. Therefore, the cyclone vessel dust collector can have a dust collection capability of large capacity with a small size.

Abstract: A floor cleaning apparatus includes a housing, a dirt collector, a suction generator, a wand, a hose, a light source, a light director and a light transmitter. The light source is provided on the apparatus at a first point while the light director is provided on the apparatus at a second point remote from the first point. The light transmitter extends between the first and second points. The light source, transmitter and director all function together to direct light from the light source past the wand onto a work area to be cleaned.

Abstract: A cyclone dust-collecting apparatus capable of separately collecting relatively large dust particles and small dust particles, and implementing compact size and light weight thereof comprises a suction air inlet, a first dust-collecting chamber for collecting relatively large dust particles from dust-laden air drawn in through the suction air inlet, a second dust-collecting chamber for collecting relatively small dust particles from the air passed through the first dust collecting chamber, a cyclone generation portion extending across the first and the second dust-collecting chambers to provide fluid communication therebetween, a dust separation assembly formed in the cyclone generation portion configured to collide with the dust drawn in through the suction air inlet and to form a cyclone air stream in the second dust-collecting chamber, and an air discharge pipe disposed in the cyclone generation portion spaced apart from the dust separation assembly.

Abstract: A dust collecting apparatus for a vacuum cleaner, which includes, a cyclonic chamber with an air inlet and a first outlet being formed therein, the cyclonic chamber causing air from the air inlet to spin therein, a dust receptacle connected to the cyclonic chamber, a grill assembly in the cyclonic chamber and on the upstream side of the air outlet to prevent dust and contaminants separated from the air from backflowing through the first air outlet, a main filter assembly connected to the grill assembly for filtering out dust and contaminants from the air backflowing from the grill assembly, and a supplementary filter assembly on the outside of the cyclonic chamber to re-filter the fine dust and contaminants incoming from the first air outlet. While conventional cyclone type vacuum cleaners are limited by the amount of contaminants that can be separated from the air, the disclosed vacuum cleaner can more effectively separate dust and contaminants.

Abstract: A dirt container for a surface cleaning apparatus is constructed from an air impermeable material and exterior walls of sufficient rigidity to maintain the shape of the dirt container. The dirt container may be supplied in a disassembled condition and assembled by a consumer prior to use.

Abstract: A light weight upright vacuum container including a cylindrical cyclonic air separation and dirt collect container with a combination shroud and pleated filter cartridge holder. The container has a tangential air inlet at the upper portion, a closed bottom and an open top leading to a motor positioned in the upper portion of the vacuum cleaner housing provide for improved air separation and dirt collection. The shroud has an open sidewall and a closed bottom with an outwardly and downwardly extending skirt that extends to the about the midpoint of the height of the container. Dirt particles that separate from the air flow above the skirt drop to the lower portion below the skirt. Clean air then exits an open upper portion of the shroud to the suction source above the container. The air exiting the shroud passes through a frusto-conical region and into a radially pleated filter before entering the vacuum motor.

Abstract: A vacuum cleaner is disclosed. The vacuum cleaner includes a main body including a suction device therein and a depressed portion opened to its upper portion, a dust collecting device seated into the depressed portion of the main body and collecting dust in a cyclonic fashion, and a catching member provided in the dust collecting device, wherein catching steps are provided on at least both ends of the catching member and caught into an inner wall of the depressed portion. The depressed portion is formed with guide inclination surfaces and catching grooves at positions corresponding to the catching steps of the catching member, respectively.

Abstract: The subject invention pertains to a vacuuming machine with a primary chamber in which vacuum pressure within allows the ingress of debris through a hose. Air and debris entering the primary chamber decelerate upon entry into the chamber which allows debris to settle out of the air column within the primary chamber. Air within the primary chamber is evacuated through an enlarged filter and duct system that carries the air through a filter hopper and fan plate to a rotating fan. The blades of the fan move air and particulate matter through a second duct into a secondary chamber in which another deceleration of air and debris allows additional debris to settle to the bottom of the secondary chamber before air is finally evacuated from the vacuum machine.

Abstract: A complex type cleaner comprises: a body; a suction head arranged at a lower side of the body, for sucking dust at the time of performing a vacuum cleaning and sucking dirty water at the time of performing a water cleaning; a suction fan for generating a suction force so that dust and dirty water can be sucked into the suction head; a reservoir detachably mounted at the body and storing dust or dirty water; and a valve assembly for converting a cleaning mode into a vacuum cleaning mode or a water cleaning mode by selectively opening and closing passages connected among the suction head, the reservoir, and the suction fan. A vacuum cleaning function for sucking dust and a water cleaning function are implemented at one cleaner, thereby reducing the cost and facilitating the usage and the storage.

Abstract: One version of the portable liquid-evacuation device may include: a container having a top wall, a bottom wall, a sidewall, a liquid inlet, a liquid outlet, and an air outlet, with the air outlet being connectable to a remote vacuum source; a pump positioned in the container, with the pump including a pump outlet; and a conduit extending from the pump outlet to the liquid outlet. In this particular version, the device may be free of both an integral vacuum source and a float-activated liquid-inlet closure. In another version, the device may include: a top wall including a liquid outlet; a pump attached to the top wall, with the pump including a pump inlet and a pump outlet; and a conduit extending from the pump outlet to the liquid outlet. In this version, the device may be free of a container sidewall and a container bottom wall.

Abstract: A vacuum dust-collecting barrel is loaded on a movable loading frame. The vacuum dust-collecting barrel is provided with a cover, a starting device (electric motor) is provided on the cover, an entrance is provided in the cover for a sucking pipe to be inserted therein, and notches are disposed in the circumference of the cover. The movable loading frame is provided with a base seat, sliding wheels are provided at the bottom of the base seat, pivotal articles are disposed on the circumference of the base seat, each pivotal article is connected with a movable piece, each movable piece is provided with a screw hole for receiving the screwing section of each hanging ring.

Abstract: A portable vacuum canister is disclosed for vacuuming debris by a hand-held suction hose and for transferring the debris down through the vacuum canister and into an existing garbage disposal for grinding, where it is then washed down the drain. The vacuum canister adapts and slides into an existing disposal opening.

Abstract: An air-flowing direction distributor of an industrial dust-collector is provided with a pipe end at one side to be connected with the pipe of the main body of an industrial dust-collector, and two pipe ends are provided at the other side of the air-flowing direction distributor to be connected with the front end of an air blower. The air-flowing direction distributor is provided with four partition boards in the interior, a passage is provided in each partition board, a movable rod is provided in the interior of the air-flowing direction distributor to penetrate through each passage, and the movable rod is provided with sealing blocks.

Abstract: A vacuum cleaner includes a housing having a suction inlet, a dirt collection vessel carried on the housing and a suction generator carried on the housing. The dirt collection vessel includes a dirt collection chamber and a spiral air guide providing a spiral air path to improve cleaning efficiency. The suction generator is provided in fluid communication with the suction inlet, the dirt collection vessel and the spiral air guide.

Abstract: A vacuum cleaning device powered by compressed air includes a canister forming an internal collection chamber for collecting liquid and debris sucked up by the vacuum cleaning device. The vacuum includes a user operated drain from which liquid and debris collected in the collection chamber of the vacuum can be drained, when desired, and may also include a liquid extraction conduit extending into the collection chamber and attachable to a liquid pump for pumping liquid sucked up into the vacuum from the collection chamber. This makes draining the collection chamber much easier that in other vacuums. The vacuum device also includes a filter for air leaving the device which may include filter material in a filter housing over which a vacuum bag may be placed. A bypass in the filter housing may be opened to allow air from the device to bypass the filter material in the housing and pass directly into the vacuum bag.

Abstract: Sanding and screening are steps in floor finishing that produce large quantities of fine dust which is difficult to remove and which plugs porous filter elements of dust collection systems. Dust collection is enhanced with a floor screening attachment for a floor machine. A vacuum system with a liquid filtering medium is provided to collect dust produced during screening. A dust collection unit is also disclosed to collect and separate sawdust produced by sanding which can cause foaming of a liquid filter medium.

Abstract: The present invention consists of a system related to vacuum cleaners, more specifically, to a system designed to filter the micro-dust that escapes from the bag with the air. The inlet turbine will suck the dirt into the vacuum cleaner bag Zone 1 where the air will escape into Zone 2. At the same time, the micro-dust will also escape with the air into Zone 2. The exhaust turbine sucks the dust content air in Zone 2; hence, the dust content air will travel through the dust collector pipes then through the dust collector main pipe, then through the small “L” type pipes, then hit the water dumping the dust into the water in the compartment one. The dust content air then travels up to get into the small “L” type pipes in the compartment two, then hits the water.

Abstract: A manual operated and battery powered device is provided for complete removal of liquid spills by use of both vacuum and blow-drying. The device provides a wheeled cart including a liquid-tight pan on which are retained one or move waste liquid receivers. An electric motor powered blower within an enclosure provides both suction and blown air through attached flexible hoses. In operation, the blower creates a vacuum in the receiver which, through the flexible hoses, is used to suction waste material from a working surface. The waste material is captured in the receiver. The device is small to reduce interference with surrounding activities. The design enables cordless operation with convenient recharging from standard electrical power sources during non-operational periods.

Abstract: A vacuum cleaner has a housing that includes a separation chamber and collection chamber, a floor unit with a suction opening, and a passage between the suction opening and separation chamber. A suction source establishes a stream of air from the suction opening to the separation chamber for separation of liquids and contaminants. A controller stops the suction source when a level of liquid in the collection chamber rises to a predetermined level. There is a protective structure to shield at least a portion of the controller from circular movement of the liquid in the collection chamber. A structure in the separation chamber defines a path for the stream of air along an internal perimeter of the separation chamber.

Abstract: Disclosed is a cyclone separating apparatus and a vacuum cleaner having the same. The cyclone separating apparatus includes a first cyclone for separating dust-ladened air, a plurality of second cyclones for separating fine dust particles via a second separation of dust using centrifugal force from air which was previously separated at the first cyclone, and an inlet-outlet cover installed on the upper part of the first cyclone and the second cyclones. The inlet-outlet cover allows fluid-communication between the first cyclone and the second cyclones, and discharge of dust-removed air from the second cyclone. Because the plurality of cyclones separates dust utilizing a compact structure, suction force deterioration is prevented and dust-collecting efficiency is increased.

Abstract: A pavement cleaning vehicle includes a tow vehicle and a trailer towed behind the tow vehicle that includes a vacuum head mounted to the trailer that consumes fresh water from a fresh water holding tank on the tow vehicle in rinsing underlying pavement. Pressurized fresh water is sprayed within a spray containing spray chamber of a vacuum head through nozzles aligned transversely across the vehicle travel path. The vacuum chamber is partitioned in the vacuum head from the spray chamber by a divider extending downward but terminating short of the underlying pavement therein establishing a chamber gap through which rinse water within the spray chamber dispersed from the pavement is drawn into the vacuum chamber which is maintained at reduced air pressure by an air-water separator tank that draws air and water mix from the vacuum head into it for air-water separation. Water is then conducted to a rinse water holding tank and air is exhausted to atmosphere.

Abstract: Disclosed is a handle assembly of a vacuum cleaner, comprising a handle pipe having an inlet and an outlet fluidly connected to a suction port assembly and a cleaner body, respectively, a handle formed on the handle pipe to grip for a cleaning work, and a cyclone dust collector protruded at one side of the handle pipe to centrifugally separate dust from an external air flowed in through the inlet of the handle pipe, and discharge a clean air to the outlet of the handle pipe. Accordingly, the cyclone dust collector can be used even in a state that an auxiliary suction tool is connected to the handle assembly.

Abstract: A utility vacuum that may be configured to employ a disposable bag or removable and reusable container for the collection of dirt and debris that are drawn into the utility vacuum. The utility vacuum may employ one or more movable legs that are movable between an extended position, which provides relatively stable operation of the utility vacuum, and a retracted position, which reduces the footprint of the utility vacuum so that it is easier to store.

Abstract: A vacuum cleaner comprises a cyclonic separator (116) for separating dirt and dust from an incoming airflow. A tool (300) and a suction conduit (114) connect the tool (300) to the separator (116). The tool (300) comprises a main air inlet aperture for engaging with a surface to be cleaned and a bleed air inlet (310) for allowing air to bleed into the suction path. The bleed air inlet (310) is located such that it is separate from the main inlet. The cross-sectional area of the bleed air inlet (310) is sufficiently large that, in use, the bleed air inlet (310) admits a sufficient quantity of air to maintain adequate separation efficiency in the separator of the cleaner even when the main air inlet is fully blocked.