Abstract: The invention relates to a vacuum-cleaning apparatus comprising a vacuum cleaner and a filter bag, in which the filter bag is formed as a non-woven fabric filter bag, as a disposable filter bag and as a flat bag having a first filter bag wall and a second filter bag wall, the filter bag has at least one surface fold, wherein each surface fold comprises areas that are positioned within the surface area of the filter bag wall, and areas that project over the surface area of the filter bag wall and can be unfolded during the vacuum-cleaning, the vacuum cleaner comprises a filter bag receiving space with rigid walls, wherein on the walls of the filter bag receiving space at least a first spacer device is provided to space the areas of at least one surface fold positioned within the surface area of the filter bag wall away from the wall of the filter bag receiving space, and at least a second spacer device is provided to space the unfolded areas of the at least one surface fold away from the wall of the filter bag

Abstract: The present invention comprises: a collecting section mounted at one side of the pathway, in which the suction force of a vacuum cleaner for sucking dust is transmitted, and moves at least some of the sucked dust towards one direction; a dust collecting section made of transparent material coupled with the collecting section, in which the receiving status of the inflow of dust through the collecting section is exposed to the outside; a discharge section which guides air and dust, which has passed through the dust collecting section, to be discharged into the pathway that transmits the suction force of a vacuum cleaner; and a foreign material discharge means which guides the flow of air into the inner corner of the dust collecting section by the operation of the user and forcibly discharges the remaining dust in the dust collection section to the outside.

Abstract: The disclosure relates to the field of vacuum cleaning and in particular the collection of air-entrained debris, in a filter bag. The filter bag is for use in vacuum cleaning apparatus, and comprises fine planar filtration means in the form of a collection bag and coarse planar filtration means both being adapted to be placed in a suction-induced air stream with the coarse filtration means disposed upstream of the fine filtration means, wherein the fine filtration means serves to provide a fine filter for retaining dust particles and wherein the coarse filtration means comprises a relatively coarse filter material having a thickness of at least 4 mm which provides a matrix volume in which dust may be collected. The volume occupied by the coarse filtration means comprises at least 2%, preferably at least 5%, most preferably at least 10% of the maximum internal volume defined by the collection bag.

Abstract: The present inventions are directed to portable cleaning apparatuses adapted for use on mobile cleaning carts useable, for example, for cleaning hospital rooms. Each apparatus comprises a pre-filter module, a vacuum source module, and a secondary filter module, releasably securable to one another, the entire apparatus being configured provide high efficiency cleaning at low noise levels.

Abstract: A suction cleaner (60) comprising a body (50); a compartment (42) for accommodating a dust collection bag (44); and a source of suction (32) for causing suction airflow into a bag in the compartment, wherein the source of suction is disposed at least partially beneath the compartment and communicates therewith by a passage (46) which extends from an upper region of the compartment.

Abstract: A cleaning apparatus including a main body, a dust collection unit detachably installed on the main body and provided with a plurality of inlets, through which foreign substances are introduced into the dust collection unit, and a connection hole, to which an external instrument is connected, a shutter to open and close one inlet, and a cap to open and close the connection hole. The shutter opens and closes the inlet in cooperation with one of whether or not the dust collection unit is attached to or detached from the main body and whether or not the connection hole is opened or closed.

Abstract: A vacuum cleaner is disclosed having a motor inlet conduit and sound deadening material disposed within the motor inlet conduit for reducing the overall noise level of the vacuum cleaner. The motor inlet conduit fluidly connects a dirt receptacle chamber and a motor inlet, and may have a generally continuous cross-sectional profile and one or more expanded regions for housing the sound deadening material. With the sound deadening material installed in the one or more expanded regions, the motor inlet conduit may form a smoothly changing profile along its entire length and reduce the overall noise level of the vacuum cleaner.

Abstract: A vacuum cleaner includes a base having a foot and a handle assembly pivotally coupled to the foot, and a canister assembly removably supported by the base. The vacuum cleaner also includes a first engagement member extending from one of the base and the canister assembly. The first engagement member engages the other of the base and the canister assembly to support the canister assembly on the base and inhibit the canister assembly from sliding side-to-side relative to the base. The vacuum cleaner further includes a second engagement member supported by one of the base and the canister assembly. The second engagement member engages the other of the base and the canister assembly to inhibit movement of the canister assembly away from the handle assembly when the canister assembly is supported on the base by the first engagement member.

Abstract: Disclosed herein are a dust collection unit and a vacuum cleaner with the same. The dust collection unit includes: a container formed in an empty cylindrical shape and filled with water to a predetermined height above a lower wall, the container having an inlet and an outlet formed in an upper wall; and a water flow pipe whose top is joined to the inlet and whose bottom is submerged in water in such a manner that the bottom of the water flow pipe is spaced apart from the lower wall. The water flow pipe includes: a first pipe, a second pipe having a second inner diameter smaller than the first inner diameter and extending downwardly from the bottom of the first pipe; and a water channel formed in a body of the second pipe defining the second inner diameter in such a way as to fluidably communicate with the inside of the second pipe.

Abstract: A surface cleaning apparatus comprises an air flow path extending from a dirty air inlet to a clean air outlet, an air treatment member and a suction motor. The surface cleaning apparatus comprises a main body comprising a front end and a rear end. A filter compartment may be provided in the main body and may comprise an open portion. A pair of spaced apart wheels may have an axis of rotation and the axis of rotation may extend through the filter compartment. A seal plate may be used to sealingly close the open portion. The seal plate may be positioned between one of the wheels and the filter compartment.

Abstract: A cleaning appliance of the canister type includes separating apparatus for separating dirt from a dirt-bearing fluid flow, a floor engaging rolling assembly including a device for drawing the fluid flow through the separating apparatus, a duct for conveying the fluid flow from the separating apparatus to the rolling assembly, and a mechanism for pivoting the separating apparatus relative to the duct.

Abstract: A cyclone separator useable in a surface cleaning apparatus comprises a cyclone casing defining a cyclone chamber and a dirt collection chamber exterior to the cyclone chamber. The cyclone chamber and the dirt collection chamber are openable such that the entire cross sectional area of the cyclone chamber and the dirt collection chamber may be exposed.

Abstract: A filter bag of a vacuum cleaner has a filter mounting plate that includes a generally strap-shaped securing element with pivot members on an end thereof. A housing of the vacuum cleaner defines a filter bag compartment therein and has pivot receivers into which the pivot members can be substantially vertically inserted. Then the filter mounting plate can be pivoted into a substantially horizontal installed position as the filter bag is inserted into the filter bag compartment. In the installed position, a first stop member of the filter mounting plate contacts and is stopped by a second stop member of the housing so as to prevent further pivoting and so as to properly position and hold the filter mounting plate.

Abstract: A latch mechanism for selectively fastening a dirt cup to a vacuum cleaner having a locking recess. The latch mechanism can include a latch member having a portion that is selectively received in the locking recess and a cam follower surface, and a latch actuator comprising at least one button with a cam surface that faces the cam follower surface. When the latch mechanism is actuated, the cam surface bears against the cam follower surface, which initiates vertical movement of the latch member relative to the latch actuator. The latch member is thereby moved from a latched position in which the portion of the latch member is received within the locking recess to an unlatched position in which the portion of the latch member is removed from the locking recess, thereby allowing the dirt cup to be removed from the vacuum cleaner.

Abstract: A surface cleaning device generally includes a nozzle, a cleaner housing connected to the nozzle, and a handle coupled to the cleaner housing at a pivot joint. The cleaner housing defines a longitudinal axis. The pivot joint is configured to rotatably store the handle at a position offset from the longitudinal axis.

Abstract: A coverage robot including a chassis, multiple drive wheel assemblies disposed on the chassis, and a cleaning assembly carried by the chassis. Each drive wheel assembly including a drive wheel assembly housing, a wheel rotatably coupled to the housing, and a wheel drive motor carried by the drive wheel assembly housing and operable to drive the wheel. The cleaning assembly including a cleaning assembly housing, a cleaning head rotatably coupled to the cleaning assembly housing, and a cleaning drive motor carried by cleaning assembly housing and operable to drive the cleaning head. The wheel assemblies and the cleaning assembly are each separately and independently removable from respective receptacles of the chassis as complete units.

Abstract: This invention relates to a dusting system (1) comprising a dusting tool (20) with a cleaning portion (21) connected to a handle (22), and an elongated chamber (10) for holding the dusting tool. The chamber comprises a storage compartment (15) arranged for storing at least a part of the cleaning portion as the dusting tool is inserted into the chamber, and a cleaning compartment (11) arranged between the opening (13) of the chamber and the storing compartment (15). Further, an outlet channel (12) is arranged for enabling fluid communication between the chamber and a vacuum source. The outlet channel is arranged at the cleaning compartment, thereby enabling a cleaning of the cleaning portion upon insertion or extraction of the cleaning portion into or from the storage compartment. The system may be a self standing unit or be integrated into a vacuum cleaner.

Abstract: An auxiliary apparatus for better vacuum cleaning effect, comprising: a first frame, formed with a first entrance and a first exit connected to the first entrance by a channel; a second frame, formed with a second entrance and a second exit, both arranged at positions between the first entrance and the first exit while being connected to the channel; and an energy harvester, wherein an airflow entering the first frame through the first entrance is split into a first airflow and a second airflow while enabling the first airflow to flow toward the first exit and the second airflow to flow into the second frame through the second entrance where it is guided toward the energy harvester for driving the same, and then the second airflow is guided to flow out of the second exit and enters the first frame for merging with the first airflow.

Abstract: The present invention relates to a vacuum cleaner, and more particularly, to a bagless vacuum cleaner. The vacuum cleaner (1) comprises a dust separating device (5), provided with a dust outlet (29), for separating dust from an incoming air flow, and a dust collecting container (7) being arranged at the dust separating device for receiving dust via the dust outlet from the dust separating device. The dust separating device comprises a first part (5a) and a second part (5b) being releasably connectable to each other, wherein the second part (5b) of the dust separating device is arranged to be movable in the dust collecting container (7) after being released from the first part (5a) of the dust separating device for compressing dust received in the dust collecting container.

Abstract: A vacuum cleaner is provided. The vacuum cleaner may include a suction nozzle coupled to a body and adapted to move along a surface to be cleaned, a guide pipe to guide foreign substances including dust suctioned through in the suction nozzle, a separation member to separate the foreign substances including dust guided along the guide pipe from air according to a principle of cyclonic separation, a collection container to accommodate the foreign substances including dust separated in the separation member, a binder supply device connected to the guide pipe to supply a binder to the separation member, the binder being in a shape of solid granules, and a heat supply device to supply heat to the collection container. The binder may bind with the dust due to heat supplied from the heat supply device. Thus, a larger amount of foreign substances including dust may be accumulated in the collection container, and therefore, the collection container may be effectively used.

Abstract: A cleaning and inspection system includes a cleaning chamber and retaining structure disposed within the cleaning chamber and configured to secure an article to be cleaned within the cleaning chamber. The cleaning and inspection system also includes a gas distributor disposed within the cleaning chamber and configured to distribute a turbulent flow of gas into the cleaning chamber that facilitates removal of foreign particles from a surface of the article. Further, the system includes a particle collection surface positioned to collect foreign particles removed from the surface of the article.

Abstract: A vacuum cleaner with a reduced frictional force between a vacuum base and a cleaning medium is described. The vacuum has a handle, yoke, body, and base. A handle and yoke distinct from, and behind, the base provides a moment arm anterior to the base when a force is applied. The handle and yoke assembly reduce the friction between the cleaning surface and the vacuum, allowing for larger motor and debris capturing capabilities, with easier handling and maneuverability resulting in advanced and superior cleaning capabilities.

Abstract: A vacuum cleaner comprises a removable dust separator. The dust separator has an inlet duct and an outlet duct. The inlet duct is arranged for fluid connection to a dirt-air duct on the cleaner, and the outlet duct is arranged for fluid connection to a motor intake duct on the cleaner. In accordance with the invention, the inlet duct and outlet duct share a common wall which divides the open ends of the ducts, an inlet duct sealing member is provided for forming an air-seal between the inlet duct and the dirty-air duct, and an outlet duct sealing member is provided for forming an air seal between the outlet duct and the motor intake duct. Both seals are thus required to fail in order to short-circuit the two dirty-air duct and the motor intake duct, despite there being a common wall section between the inlet duct and the outlet ducts.

Abstract: A hand vacuum cleaner comprises at least one cyclone and at least one dirt collection chamber. The dirt collection chamber has an openable door positioned at the front end of the vacuum cleaner.

Abstract: The chimney cleaning apparatus includes a soot-scraping scrubber attached to an adjustable handle. A receptacle is also attached to the handle for receiving the dislodged soot particles therein. In one embodiment, a vacuum system is attached to the receptacle for withdrawing the soot particles therefrom to facilitate cleanup. The apparatus can be adjusted to clean the chimney from hearth level or from roof level by switching the position of the soot-scraping scrubber and the receptacle.

Abstract: A surface cleaning apparatus comprises an air flow path extending from a dirty air inlet to a clean air outlet. The surface cleaning apparatus may also comprise a main body comprising a suction motor provided in the air flow path and a platform. A cyclone bin assembly may be provided in the air flow path and removably mounted on the platform. The cyclone bin assembly may comprise a cyclone chamber. An alignment member may be provided on the platform and may be located at the air exit path of the cyclone bin.

Abstract: Disclosed is a robot cleaner. The robot cleaner includes a case forming the external appearance of the robot cleaner, an agitator rotating and contacting a surface to be cleaned, a dust collector in which foreign substances are collected and a suction unit providing suction force to the dust collector, and the agitator is arranged between the dust collector and the suction unit. Therefore, the robot cleaner reduces loss of suction force generated from the suction unit.

Abstract: A surface cleaning apparatus comprises a filtration apparatus comprising at least one cyclone and at least one filter mounted in a filter housing. The filter housing has a lower portion, such as a bottom door, that is openable and the filter is visible, and a dirt collection area upstream of the filter is emptyable, when the lower portion is opened.

Abstract: The present invention provides a suction cleaning module comprising: a first housing, a second housing, a third housing and a fan blower. The second housing, connected to the bottom of the first housing, has a shell section such that a suction channel is formed between the shell section and the first housing and has a dust collection space communicating with the suction channel. The third housing, respectively coupled to the first and second housing, has a filtered flow outlet. The fan blower connected to the third housing has a flow inlet and a flow inlet corresponding to the filtered flow outlet.

Abstract: An autonomous vacuum cleaner comprising a main body comprising a dirty air inlet, a clean air outlet, an airflow path extending between the dirty air inlet and the clean air outlet, a separating apparatus arranged in the airflow path between the dirty air inlet and the clean air outlet, and an airflow generator for generating an airflow along the airflow path from the dirty air inlet to the clean air outlet. The airflow generator has a discharge portion which discharges airflow into a chamber formed in the main body, the chamber including an opening that is closable by a removable panel, wherein a power source is receivable within the chamber formed in the main body and is removable from the chamber through the opening.

Abstract: A multi-function surface cleaning apparatus includes a cleaning containment enclosure including a top surface and a plurality of walls connected to form a chamber therebetween, wherein each wall has an inner surface, an outer surface, and a bottom surface, a delivery lance fluidly connected to the top surface of the cleaning containment enclosure, a vacuum suction hose fluidly connected to the top surface of the cleaning containment enclosure, a gun trigger fluidly connected to a proximal end of the delivery lance, and a water pressure line fluidly connected to the gun trigger. The cleaning containment enclosure may include four walls configured to form a diamond-shaped cleaning containment enclosure. The cleaning containment enclosure further may include a plurality of relief vents that extends from the inner surfaces of the walls of the cleaning containment enclosure therethrough to the outer surfaces of the walls of the cleaning containment enclosure.

Abstract: A vacuum cleaner is provided. The vacuum cleaner includes a cleaner body including a suction motor, a dust separation device communicated with the cleaner body, the dust separation device separating dusts, a dust container separably mounted on the cleaner body, the dust container including a dust storage part storing the dusts separated by the dust separation device, a compressing member compressing the dusts stored in the dust storage part, a magnetic member seat part disposed at the dust container, a magnetic member seated on the magnetic member seat part, a cover coupled to the magnetic member seat part to cover the magnetic member, and a magnetism detection unit disposed at the cleaner body to detect magnetism of the magnetic member.

Abstract: A cleaning apparatus for cleaning an object to be cleaned by allowing a cleaning medium caused to fly by an air flow to collide with the object to be cleaned is provided. The cleaning apparatus includes a cleaning tank in which the cleaning medium is caused to fly by the air flow and which has an opening to allow the object to be cleaned to pass through; a cleaning medium accelerating part provided at a bottom part of the cleaning tank and to inject the air flow to cause the cleaning medium to fly; a hollow elongated member having substantially the same inner diameter as a diameter of the opening, connected outside the opening, and configured to form a movement path for the object to be cleaned; and a cleaning medium returning part to return the cleaning medium stagnant in the hollow elongated member into the cleaning tank.

Abstract: A vacuum cleaner comprising: a secured tube secured horizontally to the front surface of the main body of the cleaner and sucks in dust from the outside due to a motor in the main body; a pair of securing members which secure two ends of the secured tube to the main body and convey the sucked-in dust to a filter in the main body; and a suction tube which is rotatably provided on the outer circumferential surface of the secured tube and rolls along the surface to be cleaned, and in the cylindrical surface of which are formed dust-suction holes for sucking in dust. Because the suction tube in which the plurality of dust-suction holes are formed is rotatably provided on the outer circumferential surface of the secured tube, the suction tube continuously turns while cleaning bedding by pushing or pulling the main body, and thus the bedding is not sucked into the secured tube.

Abstract: A surface cleaning apparatus comprises an air flow passage extending from a dirty air inlet to a clean air outlet. A suction motor is positioned in the air flow path. At least one cyclone is positioned in the air flow passage. An associated dirt collection chamber is exterior to the cyclone. The cyclone and the suction motor are positioned side by side and have generally parallel longitudinal axes. The dirt collection chamber may surround part of the suction motor. Alternately, or in addition, a pre-motor filter having an enhanced surface area may be provided by configuring the pre-motor filter to extend outwardly of the pre-motor filter, such as by overlie part of the cyclone or the dirt collection chamber.

Abstract: A cleaning apparatus is provided which can prevent dust from being dispersed into the surrounding area. The cleaning apparatus comprises a cover member which covers the cleaning target location of the article support platform, a blower which moves air toward the cleaning target location within an area surrounded by the cover member, and a dust collector which collects dust that is lifted by movement of air caused by the blower.

Abstract: This invention relates to a vacuum cleaner (10), and in particular a vacuum cleaner (10) having a rotatable brush (24). The vacuum cleaner (10) has a travelling head (12) adapted to be moved across a surface to be cleaned, the travelling head (12) having a leading end (28) and a trailing end. The travelling head (12) has a rotatable brush (24), the rotatable brush (34) being located in a brush chamber (23) at the leading end of the travelling head (12), the brush chamber (34) having an opening (26) through which a part of the rotatable brush (24) projects, the opening (26) and the rotatable brush (24) spanning substantially the full width of the travelling head (12). The travelling head (12) also has an impeller (46), and a motor (34) for driving the rotatable brush (34) and the impeller (46).

Abstract: A filter shaker for a filter assembly disposed in a vacuum includes a housing that removably mounts to the filter and/or a support for the filter and a vibrator assembly carried by the housing. When actuated, the vibrator assembly vibrates the filter to clean particulate matter from the filter. The vibrator assembly includes a motor that drives an eccentric and an actuator that periodically impacts against a portion of the housing to cause the vibrations. The housing includes a mounting assembly for mounting the filter shaker to the cage and/or filter in an operative position and a locking assembly for locking and unlocking the filter shaker in the operative position to prevent the filter shaker from vibrating off. In the operative position, the filter shaker covers an open end of a tubular filter and thereby forces air to be directed through filter material of the tubular filter.

Abstract: Used in a mobile robotic vacuum cleaner, a dust collector is disclosed to include a dust collection box, and a chips collection box connected to the dust collection box. The chips collection box comprises two openings respectively disposed adjacent to one respective roller brush of the mobile robotic vacuum cleaner and adapted for receiving chips directed by the roller brush for enabling the directed chips to be gathered in the chips collection box. Thus, dust sucked by the mobile robotic vacuum cleaner and chips directed by the roller brushes are respectively collected in the dust collection box and the chips collection box, and any non-dust articles that are accidentally directed into the chips collection box can be discovered and cleaned easily by the user.

Abstract: A surface cleaning apparatus comprises an air flow path extending from a dirty air inlet to a clean air outlet. The surface cleaning apparatus may comprise a cyclone bin assembly comprising a cyclone chamber positioned in the air flow path. The surface cleaning apparatus may comprise a dirt collection chamber and a suction motor positioned in the air flow path. The cyclone chamber may have first and second opposed ends and a sidewall extending between the first and second opposed ends. The sidewall may have a first portion extending from the first opposed end towards the second opposed end and a second portion extending from the second opposed end towards the first opposed end. The first and second portions may meet at a juncture. The first opposed end and the first portion may be openable.

Abstract: A vacuum cleaner and suction nozzle thereof. The vacuum cleaner has a housing, dust collecting unit, filter assembly, motor assembly and roller brush. The suction nozzle has a bottom housing, front cover and roller brush. The housing includes a concave cavity; the bottom housing and the front cover latch together to form a chamber; the roller brush assembly and the separation piece fit into this chamber; the separation piece corresponds to a transmission component of the roller brush. When rotating at high speed, the roller brush forms a seamless and closed separation face with the separation piece, preventing foreign matter from entering the transmission component, thus avoiding reduced suction and damage due to a tangled synchronous belt or a shaft jamming a roller brush bearing.

Abstract: A new vacuum cleaner that is adapted for use in a vehicle has a user-removable debris collection tank that has spaced recesses on the bottom that inhibit both fore-and-back movement of debris within the collection tank and side-to-side movement of debris within the collection tank. The recesses are located in opposed outer corners of the tank, and have lower surfaces that support the tank in a standing position. Raised sections divide each of the recesses into two corner recess sections and an offset recess section, and inhibit both fore-and-aft movement of debris within the recesses and side-to-side movement of debris within the recess sections. The offset recess section has tracks that curve in different directions from an intermediate position adjacent or near a side of the tank. The bottom of the tank is generally curved downwardly towards the sides of the tank.

Abstract: A vacuum cleaner has a screen cage that is permanently attached to a lid that fits on a receptacle. The screen cage has multiple layers of screens with different screen sizes, including an inner support that has greater rigidity and larger apertures that the primary screen, and an outer screen that also has greater rigidity and larger apertures than the primary screen, and is made of a different material than the support. A replaceable filter mounts to a power head that can be removed from the lid while the lid remains attached to the receptacle, and nests in the screen cage. A thermal cutoff shuts the vacuum cleaner off when the temperature of air in a part of the flowpath exceeds a limit.

Abstract: A vacuum cleaning device comprises a unit (1) for aerodynamically affecting dust particles and/or a surface (40) to be cleaned in order for the particles to become dislodged from the surface (40) and to be received by the unit (1). The unit (1) comprises a housing (10) having an internal space (11) enclosed by a housing wall (12) in which at least one opening (13) is arranged, a movable surface (30) which is integrated in the housing wall (12), and means (31) for actuating the movable surface (30), which are adapted to realize an oscillating movement of the surface (30) that causes air to alternately be drawn into the housing (10) through the opening (13) and expelled from the housing (10) through the opening (13). At least a portion of the housing wall (12), particularly a portion of the housing wall (12) in which the opening (13) is located, is movably arranged in the unit (1).

Abstract: Vacuum hose handling apparatuses and systems are disclosed herein. One exemplary implementation of the present disclosure includes a vacuum handling apparatus comprising a base, a support arm operatively coupled to the base, a connection hose configured to connect to an open end of an industrial vacuum hose, and a collection tube attached to the support arm and in fluid communication with the connection hose. In addition, the vacuum hose handling apparatus may be configured to allow movement of the collection tube relative to a corresponding collection vessel. Additional vacuum hose handling apparatuses and systems are also disclosed herein.

Abstract: A method and apparatus for removing foreign material from an upwardly oriented surface of a body-in-white. The apparatus includes a vacuum member mounted to a frame for removing foreign material from the associated upwardly oriented surface and a soft-material brush mounted to the frame rearward of the vacuum member as defined by the direction of forward travel of the vehicle. The apparatus may also vertical adjustment device(s) configured to adjust and maintain vertical distance between the apparatus relative to the associated vehicle. Also disclosed herein is a method for removing foreign material from an upwardly oriented surface of a body-in-white that comprises using bringing the apparatus defined herein in proximate contact with at least one surface of a body-in-white as it progresses down a vehicle assembly line.

Abstract: A vacuum cleaning machine has a cannister with an inlet port and at least two outlet ports. At least two filters are disposed inside of the cannister, one in pneumatic communication through each of the outlet ports. At least two valves are disposed outside of the cannister. Each valve is in pneumatic communication between a vacuum source and an outlet port so as to permit air to be drawn by the vacuum source from the inlet port simultaneously through the filters. A controller operates the valves to switch the filters from the vacuum source to ambient air so as to permit ambient air to be sequentially intermittently drawn through corresponding valves and filters into the cannister. Preferably, the controller includes a timing mechanism for setting the delay time of the sequential valve operation and a timing mechanism for setting the intermittent time of connection of each filter to ambient air.

Abstract: A dirt suction device comprises at least two filters (3, 4) which are arranged on/in a dirt suction device housing (1), are affected by an air stream from a fan (21), and include valves (26-34) for separately controlling the cleaning action of the filter, wherein during normal operation, the dirt-laden air stream passes through at least one filter from the untreated air side to the clean air side, and at least one of the valves is associated with each of the at least two filters, said valve switching over in the cleaning position such that the air stream in the filter is reversed and the dirt particles adhering to the untreated air side are removed, wherein the fan of the dirt suction device is arranged outside the dirt suction device housing.

Abstract: A vacuum cleaner comprising: a motor coupled to a fan for generating air flow; a body with a handle; a dirty air duct with a dirty air inlet; a battery pack housing at least one rechargeable cell for powering the motor; and a dirt separating means located in a path of the air flow generated by the fan, wherein the dirt separating means comprises: a hollow substantially cylindrical dirt container with a longitudinal central axis; and an air inlet port to the dirt container, wherein the air inlet port is in communication with the dirty air duct and wherein the battery pack has a curvilinear or annular cross-sectional profile transverse to the central axis and a curvilinear inner wall embracing the dirt container.

Abstract: The present invention is directed to a vacuum including a dust extraction system. The system includes a filter assembly, an airflow generation assembly, and valve assembly. The airflow generation assembly is configured to draw contaminated air toward the filter assembly and exhaust filtered air as a discharge stream. The filter assembly is configured to remove contaminants from the contaminated airflow by capturing particulate material suspended within the airflow. The valve assembly is configured to selectively direct filtered airflow into the filter assembly such that the filtered air stream cleans the filter.