Abstract: This system provides an air-ventilating and cleaning element positioned within a housing. The housing contains multiple vents in the housing walls. The vents serve as channels that enable air to flow into and out of the air-ventilating device. The air-ventilating and cleaning element can vary and can range from a simple air ventilator to and an air purifier. The cleaning element can contain a filter element to further facilitate cleaning of the air. The cleaning element can be positioned in the housing on a track or pin to allow for movement of the cleaning element within the housing. Movement of the cleaning element may be desired in order to more efficiently clean air channeled through the device. Because of the ability to move the cleaning element, air flow through the device can be adjusted depending on a particular cleaning application.

Abstract: A vacuum cleaner is provided that includes a main cleaner body comprising a discharge grill to discharge air from which dust has been separated; a grill cover mounted on the discharge grill to pivot between a closed position and an open position in relation to the discharge grill; a fragrant odor generating apparatus including a first shutter and second shutter that are mounted on the grill cover and that are opened by discharge pressure of air discharged through the discharge grill and closed by their own weight, and a fragrant agent disposed in an air path between the first shutter and second shutter; and a shutter locking unit to lock the first shutter in a closed position when the cleaner is not in use.

Abstract: A recycling mechanism is provided for use with a compact dedusting apparatus to clean the contaminate-laden air discharged from the dedusting apparatus for subsequent re-use by the dedusting apparatus. The recycling mechanism provides a closed loop air containment system that retains the air within the apparatus without providing discharge to the atmosphere. The recycling mechanism includes a cyclonic separator that removes most of the dust and contaminates from the air discharged from the deduster. The air discharged from the cyclonic separator is passed to an inline high efficiency synthetic cartridge filter for final cleaning before being passed back into the fan that drives cleansing air through the deduster. The contaminant material removed by the cyclonic separator is collected by an air tight dust collection container installed at the cyclone outlet for subsequent removal from the system.

Abstract: A central vacuum unit comprises a cyclonic chamber having a sidewall. A motor causes a swirl of air loaded with debris to centrifugally contact an inner surface of the sidewall of the cyclonic chamber. A lateral outlet is defined through the sidewall to provide for lateral discharge of the debris from the cyclonic chamber.

Abstract: The present invention broadly comprises a multiport filter having at least three intake ports and at least two layers—a first layer for containing particles 3 microns or greater and a second layer that contains particles 3 microns or less in size. In alternate embodiments, the filter includes a third layer for trapping odors and gases and a fourth layer for trapping fines. The second layer may be comprised of ULPA material and may have antimicrobial material. The invention also includes a contaminant removal system for the filtering and recirculation of air contaminated with smoke from cautery-type surgical procedures. The invention also broadly comprises a surgical assemblies control service head designed to house powered surgical devices and a vacuum-filtering system for the treatment of air contamination caused by surgical procedures.

Abstract: A compact ventilating system having an air purifying function is disclosed, which includes a case provided in the inside of a room; an air-supplying passage for penetrating a wall through the case under a ceiling, to introduce an outdoor air to the inside of the room by communicating the outside of the room, the case, and the inside of the room with one another; an air-discharging passage for penetrating the wall through the case under the ceiling, to discharge an indoor air to the outside of the room by communicating the inside of the room, the case, and the outside of the room with one another; an air-circulating passage for communicating the inside of the room with one point of the air-supplying passage in the case, to introduce the indoor air to the inside of the case, and to re-supply the introduced indoor air to the inside of the room; and a fan provided in the case, for providing the outdoor air introduced to the case through the air-supplying passage to the inside of the room, or re-supplying the indo

Abstract: An apparatus and a method for filtering sectioning wastes of a microtome that are present in an air stream is suggested. The apparatus encompasses an aspiration device. With the aspiration device, sectioning waste can be aspirated from a blade region of the microtome with an air stream. The aspiration device comprises a main filter in which the sectioning wastes can be filtered from the air. In order to allow inadvertently aspirated histological sections to be retrieved again without mix-up, the apparatus according to the present invention has an aspiration device comprising a prefilter that is arranged between the blade region and the main filter and prefilters the sectioning wastes. The present invention further relates to a microtome.

Abstract: A filter assembly attachable to the discharge opening of a contaminated air source includes a filter having an outer periphery; a flexible conduit having a continuous side wall, an outer end attachable to the discharge opening, and an inner end attachable about the periphery of the filter; and a flexible side protrusion extending from the conduit sidewall, the protrusion having an inner end in communication with the interior of the conduit and a closed outer end. The filter can be mounted within an enclosure with an inlet opening and a discharge outlet, the conduit extending through the inlet opening and the filter being located within the enclosure.

Abstract: Methods and apparatus are disclosed that pick up and clean landscape rock using air under vacuum pressure. This apparatus provides a means for cleaning and reusing rock that has become aesthetically unattractive instead of removing the old landscape rock and replacing it with new rock. The invention also includes a device for separating debris from the vacuum airstream. This device may be used in combination with the device for picking up and cleaning landscape rock or may be used independently.

Abstract: A portable dust collection system for a wood shop or other dust producing environment is employed with a sander, power saw, router or other dust-producing tool such as a woodworking tool. A movable platform has a vertical intake pipe supporting a head portion formed with a shroud. A centrifugal impeller drives the intake air stream plus any entrained particles into one or more cyclonic separators, which deposit the dust in a respective drum supported on the platform beneath the cyclone. The air inlet from the tool enters the vertical pipe at a point partway up the pipe, so that large particles drop to the bottom end of the pipe, where a clean-out door is provided. The exhaust or discharge air from the cyclonic separator(s) passes out through a filter cartridge to the ambient. A deflector plate prevents the dust from eddying back into the separator.

Abstract: The present invention provides a portable system for capturing airborne pollutants and methods for using the portable system. The apparatus includes at least one flexible and maneuverable source containment means that can be connected to an atomizer, such as a spray gun or aerosol can or can be positioned near or over an open container giving off airborne pollutants. At least one suction generator allows air flow from the source containment means to at least one filter that may be attached or detached from its source of suction. After filtration, the apparatus includes at least one exhaust means to remove the treated air from the proximity of the user.

Abstract: A gas flow generator comprising: an ultrasonic driver comprising a piezoelectric or electrostrictive transducer mounted on a substrate, operation of the transducer being arranged to cause the driver to bend; a first membrane disposed on or formed integrally with the transducer or the substrate; and a second membrane mounted substantially parallel with the driver and spaced a given distance therefrom, one of the membranes being perforate, whereby ultrasonic bending of the driver on actuation of the transducer causes a gas flow through the perforate membrane.

Abstract: The present invention is an air purifier including an ionizing assembly that operates to charge particulate material in an air flow passing through the purifier. The charged particulate material is attracted to and retained by a filter element disposed downstream of the ionization assembly and having an electrical charge opposite to the charged particulate material. The purified air passing through the filter is directed out of the device, optionally in conjunction with a fragrance that is added to the purified air flow. The ionizing assembly is formed with a ground member disposed adjacent the ionizing member to keep the electrons generated by the ionizing assembly within the purifier, and thus prevent static discharges from occurring outside of the purifier. The air flow is directed by a fan through the purifier in an angular and substantially laminar manner, such that the efficiency of the purifier is increased.

Abstract: An accumulator having an internal valve opened by applying air pressure to a diaphragm with a small solenoid to apply air to the diaphragm where the air is supplied from a pilot air supply. When the internal valve operated by the diaphragm opens, it snaps to a fully open position thereby opening the valve and uncovering a passageway leading to a filter for cleaning. The passageway is sufficiently wide that the resulting flow of air through the passageway is so explosive that air pressure on the filter is distributed over the surface area of the filter for a brief moment, blowing the dust on the filter free.

Abstract: A biohazard safety enclosure or workstation particularly adapted for enclosing automated instrumentation includes a chamber defined by front, back, top, bottom, and opposed end walls; a HEPA filter across an air inlet opening into the chamber, and an airflow means to direct air horizontally through at least part of the chamber between the end walls. Preferably, the workstation has a second HEPA filter across an air outlet opening in the work chamber, with the airflow means including a conduit extending from the air outlet opening to the air inlet opening. A fan draws air through the conduit. All of the air can be exhausted from the workstation, or a part of the filtered air can be exhausted from the workstation and replenished through a make-up air inlet into the chamber.

Abstract: A compressor including a shroud for at least partially encompassing a component included in a compressor. A recess suitable for accepting at least two differently sized air filters having a similar geometric shaped is formed in the shroud. The compressor/filter system may utilize commonly available air filters which are designed for an unrelated device, but which are suitable for the purpose of filtering air for compressors. A fluid connection may extend between the enclosure forming the recess in the shroud and an inlet included in a compressor pump for pressuring air to a higher pressure. A securing mechanism, such as a panel door, may be implemented for securing an individual air filter in the path of air being drawn into the fluid connection for pressurization by the pump.

Abstract: A ventilation system providing NBC protection for at least one closed security space and/or protection space with constant slight excess pressure, the ventilation system substantially having an air inlet and air outlet, an explosion protection valve, a prefilter, a filter for suspended matter, an activated carbon filter and an air conveying device for sucking in the air to be purified and for distributing the purified air, and wherein the ventilation system has at least one of the three following built-in elements: an explosion protection valve which is combined with and cooperates with the prefilter; a combined activated carbon filter made of activated carbon which is specifically effective against biological and/or chemical toxic substances, on the one hand and, on the other hand, against radionuclides; and an air pump configured as a double bellows.

Abstract: In an FCC apparatus in which swirl arms are used to discharge gas and catalyst from a riser, a baffle is used to direct descending catalyst away from a wall of a disengaging vessel proximate a stripping section comprising elongated strips of metal.

Abstract: A working vehicle, such as an agricultural combine, includes a vehicle body and an internal combustion engine carried by the vehicle body. The internal combustion engine includes a heat exchanger. An air scoop has an inlet positioned near a top of the vehicle body and facing in an upward direction, and an outlet positioned in association with the heat exchanger.

Abstract: A compact ventilating system having an air purifying function is disclosed, which includes a case having one end buried in a ceiling of a room, and the other end projected toward the inside of the room; an air-supplying passage of communicating the outside of the room, the case, and the inside of the room with one another, to supply an outdoor air to the inside of the room; an air-discharging passage of communicating the inside of the room, the case, and the outside of the room with one another, to discharge an indoor air to the outside of the room; an air-circulating passage of communicating the inside of the room with one point of the air-supplying passage inside the case, to introduce the indoor air to the case, and to re-supply the air to the inside of the room; and a fan provided in the case, for supplying the outdoor air introduced to the case through the air-supplying passage to the inside of the room, or re-supplying the indoor air introduced to the case through the air-circulating passage to the insi

Abstract: An engine unit that enhances air intake efficiency of an engine air intake passage for sending air into a transmission case housing a continuously variable transmission. The engine air intake passage supplies air to an engine arranged in a lower portion of a vehicle body. An air cleaner cleans outside air to be sent to the engine air intake passage. A transmission air intake passage sends air into the transmission case. The transmission case is adjacent to the engine in a vehicle width direction. The engine air intake passage extends upward from a front portion of the engine. The transmission air intake passage extends upward from the front portion of the transmission case in the vehicle width direction of the air cleaner and the engine air intake passage.

Abstract: A semiconductor manufacturing process facility requiring use therein of air exhaust for its operation, such facility including clean room and gray room components, with the clean room having at least one semiconductor manufacturing tool therein, and wherein air exhaust is flowed through a region of the clean room. The facility includes an air exhaust treatment apparatus arranged to (i) receive air exhaust after flow thereof through said region of said clean room, (ii) produce a treated air exhaust, and (iii) recirculate the treated air exhaust to an ambient air environment in the facility, e.g., to the gray room of the facility.

Abstract: A dry gas production system for supplying dry gas to a pressurized space, such as an underground conduit or an aerial cable. The dry gas production system may include a modular enclosure that has a removable support to which multiple dry gas production modules are mounted. The support may be a mobile rack wheeled inside the enclosure and likewise removed from the enclosure while supporting the dry gas production modules. The dry gas production system may include multiple dry gas production modules that are operated as required to meet the dry gas demand for the pressurized space. The module compressor may include a variable frequency drive for driving the compressor motor at different speeds and may optionally include a mount with vibration isolation.

Abstract: A method for detecting the cleanliness of a filter. The filter is disposed on an air inlet or an air outlet of a fan. The method includes the following steps. At first, outputting a rotation control voltage to the fan, and an airflow generated by the rotation of the fan flows through the filter. Then, detect an actual rotation rate of the fan, and calculate an actual dust value f1 according to the actual rotation rate and the rotation rate control voltage. Then, a dust upper limit value of the filter is defined. Finally, the cleanliness of the filter is determined according to the actual dust value and the dust upper limit value.

Abstract: A filter apparatus includes a gas-impermeable outer conduit having an open end and a closed end. The interior of the outer conduit is axially divided into first and second sides. A first clean and first dirty flow path are defined within the first side. A first gas-permeable liner separates the first clean flow path from the first dirty flow path and from the open end. A second clean and second dirty flow path, are defined within the second side. A second gas-permeable liner separates the second clean flow path from the second dirty flow paths and from the open end. A control valve connects one of the first clean and second clean flow paths to an exhaust conduit, and connects the other clean flow path to a selectively pulsed supply of cleaning gas.

Abstract: An oxygen enrichment apparatus includes a main body including an oxygen enriching unit and a pump unit for supplying oxygen-enriched air obtained by the oxygen enriching unit to a predetermined place; a ventilating unit for suctioning exterior air into the main body and discharging the exterior air out of the main body after supplying the exterior air into the oxygen enriching unit; and a control unit for controlling the pump unit and the ventilating unit. The ventilating unit and the control unit are installed in the main body. The main body further includes therein a secondary battery serving as a power supply for supplying a power to the pump unit, the ventilating unit and the control unit.

Abstract: A filter apparatus for improving gas temperature stability while maintaining a high impurity removal capacity. The filter apparatus includes a filter for removing impurities from a gas and a temperature adjuster for adjusting the temperature of the gas to a predetermined temperature. The filter apparatus further includes a humidity detector, arranged at the upstream side of the filter, for adjusting the humidity of the gas before the gas passes through the filter.

Abstract: A debris collection device with a self cleaning retention system that is designed for powered tools such as a sander. One embodiment of the system has an inflatable collection bag and a bag retention system, which further includes an integral bag adapter nozzle for retaining the collection bag to the debris exhaust of a tool such as a sander. For one embodiment of the debris collection device, the retention system can also has a tube, pipe or bracket which connects the adapter to powered tool such as a sander.

Abstract: A portable filter assembly for providing filtered air to an enclosed space includes a housing having an exhaust port connected to the enclosed space, an internal air intake port connected to the enclosed space, and an external air intake port connected to the outside of the enclosed space. A fan provides a partial vacuum to the internal and external air intake ports. A filter is located in the housing and the assembly is arranged such that the assembly simultaneously filters re-circulated air from the enclosed space through the internal air intake port and filters external air from the outside of the enclosed space through the external air intake port and filters the air to the enclosed space through the exhaust port.

Abstract: The disclosure provides a system for mounting and sealing a filter in a vacuum cleaner, such as a wet and dry vacuum cleaner, that concentrates compressive sealing forces on a specific, relatively thin seal portion rather than the filter body as a whole. The concentrated compressive stress provides a well-defined region to consistently provide a sealing engagement. A portion of the seal is positioned into an undercut portion of a mounting assembly and is compressed or “pinched” between opposing surfaces to cause the sealing. Further, one or more of the surfaces are movable to compress the seal portion therebetween by actuation of a rotatable filter clamp engageable with a cam. The filter clamp translates toward the seal portion as the filter clamp is rotated along a sloped surface of the cam to engage and clamp the seal portion between the surfaces.

Abstract: The present invention is directed to a filter cleaning device, in particular, diesel particulate filters. In one embodiment, the device includes a source of high pressure fluid and a mechanism transport the fluid to a nozzle or nozzles; an actuator for moving the nozzles; a controller with logic for instructing the actuator to automatically move the nozzle or nozzles across the surface of the filter; a collection device and suction device downstream of the filter; and ducting to transport the fluid between parts of the system. In one embodiment, a second collection device is used downstream of the suction device to provide additional particulate removal. There are three methods proposed for providing high pressure cleaning fluid to the filter face: 1) rotating the filter and rotating the jet about an axis outside of the filter; 2) moving a nozzle in two perpendicular directions (i.e., x-y); and 3) rotating a radial nozzle about the central axis of the filter.

Abstract: The invention provides a system and method comprising an apparatus for removing contaminants from a gas in a semiconductor processing device, which can include a filter unit having at least two parallel filter stages located therein. The filter stages are designed to remove a least a portion of the contaminants present in the gas flowing through them. The apparatus can also include a flow controller for distributing the gas flow among the filter stages. In one embodiment, the controller may consist of a diffuser plate. The invention also provides a sampling tube orifice for gas flow control in a system or method of the invention. In another embodiment, an apparatus for removing contaminants from a gas in a clean room comprises a filter unit having at least two parallel filter stages, which are used to remove a portion of the contaminants in the gas as it passes through the apparatus.

Abstract: A fan blade having a hollow housing allowing air to enter into the front or rear opening of the fan blade and directed to exit out the side opening of the fan blade after having passed through a filter. Use of this fan blade is a method for removing particulates from the air.

Abstract: A dedusting device 1 with a demister 15 advantageously arranged standing obliquely has a very compact construction because sufficient moistening or wetting of dust-containing crude air 24 is possible through the use of intensively acting multiple stream nozzles 33. The ventilator 11 is allocated to its own ventilator housing 18 that is connected to the dedusting device housing 10 and has a muffler 20 inserted downstream.

Abstract: A housing unit, alone and incorporated into a critical process air handling unit, includes a hollow generally cylindrical body, a damper, a filter mounting structure and a stand structure. The hollow generally cylindrical body extends along and about a longitudinal axis and has a generally cylindrical outer surface and a generally cylindrical inner surface defining an inlet opening, an outlet opening and a passageway extending therebetween. The generally cylindrical body has a drain hole and an entry way formed through and between the inner and outer surfaces. The damper assembly is connected to the generally cylindrical body at the inlet opening and the filter mounting structure is connected to the generally cylindrical body at the outlet opening. The stand structure is operative to support the generally cylindrical body above a support surface in a manner such that the longitudinal axis is oriented generally horizontally and the drain hole is disposed in facial opposition to the support surface.

Abstract: A fan fixture includes a base having a chamber to receive a fan, the chamber of the base having two adjacent side faces formed with a slot and an air inlet respectively, a cover detachably mounted on the base to fix the fan in the chamber of the base and having a plurality of air outlets, and a filter net inserted through the slot into the chamber of the base to cover the air inlet of the base. Thus, the filter net of the fan fixture covers the air inlet of the base to provide a dustproof effect so as to prevent the dust or insects from entering the fan to protect the fan and the electronic parts contained in the housing.

Abstract: A cyclone separator (14) for use in a suction apparatus (4) of a hand-held power tool (2) includes a dirty air inlet (12), a suction ventilator (38) for aspirating, through a suction opening (8) which is connected with the dirty air inlet (12), abrasion particle-carrying suction air, a pure air outlet for letting out purified air, a vortex chamber (16) arranged between the dirty air inlet (12) and the pure air outlet, with the dirty air inlet (12) opening substantially tangentially into the vortex chamber (16) for generating a swirling stream in a direction toward the pure air extraction element (24), a collection chamber (36), and particle outlet having at least two particle outlet openings and connecting the vortex chamber with a collection chamber (36), with the dirty air inlet opening into the vortex chamber between the two particle outlet openings.

Abstract: A safety cabinet which can prevent contaminated air from leaking from a working space through the periphery of a front shutter, and which can prevent outside air from entering the working space has a peripheral structure part surrounding the working space formed with air suction ports in a part opposed to the inner surface of the front shutter connected to a negative pressure passage formed outside of the working space. The negative pressure passage guides air sucked through the air suction ports from the inside and the outside of the working space, toward a filter for purification of the air.

Abstract: A direct flow filter is provided with an auxiliary filter at one of its upstream and downstream faces and spanning between first and second sets of pleat tips, providing a pre-filter or a secondary filter.

Abstract: The present invention relates to a floor standing treatment device that has a front panel and a mainframe assembly adapted to be removably attachable to the front panel. The mainframe assembly has an integrally molded latching mechanism having a latch and one or more L shaped guides configured to cooperate with one or more pairs stops for limiting lateral movement of the latch. The latch is adapted to engage a portion of the front panel for securely attaching the front panel to the mainframe assembly. The air purifier may also have a cavity positioned along a bottom edge of a back housing to house an electrical cord provided with the air purifier. Additionally, the air purifier may also have an elongated slot positioned at the apex of the mainframe assembly for allowing one or two handed carrying of the air purifier.

Abstract: A compressor is provided with an oil separator disposed in between a discharge chamber of a refrigerant and a discharge port connected to a circulating path for the refrigerant. The oil separator has a separating chamber into which the refrigerant flows from the discharge chamber, and a separating tube disposed in the separation chamber. A portion of the separation chamber, which extends from the separating tube in the downward direction, deviates from the axis of the separating tube and forms a deviating area.

Abstract: An air purifier having dimensions that enable the air purifier to be more discrete is disclosed. The air purifier also includes components that enable the air purifier to mimic a particular environment in which the air purifier may be placed. In addition, the air purifier includes electrical plugs such that the air purifier is able to be plugged into a traditional wall outlet and the components enable the air purifier to mimic the appearance and function of the wall outlet. Furthermore, the air purifier includes one or more modules to sanitize incoming air, facilitate air flow through the air purifier, and/or dispense scented vapors.

Abstract: The invention relates to a filter module in the form of a hollow body with at least one chamber. The walls of the hollow body are made of a non-metallic material that can be comminuted and/or disintegrated in a recycling process. The material is a paper product, such as cardboard, paper or paperboard, or a fibrous material, such as wood or pressboard material.

Abstract: A vacuum cleaner including an electric blower for generating suction air, a collecting unit for collecting dust contained in the suction air, a dust removing unit for removing dust adhered to the collecting unit, and a dust removing stop unit for stopping an operation of the dust removing unit. The dust removing stop unit stops the operation of the dust removing unit in response to a user's selection or an operation mode of the vacuum cleaner, thereby saving a power consumption of the dust removing unit.

Abstract: A vacuum cleaner includes a first dirt separation unit and a second dirt separation unit. The first dirt separation unit has a first inlet port through which a suction air stream including dirt particles is introduced thereinto, and the second dirt separation unit has a second inlet port through which the air stream introduced into the first dirt separation unit is introduced into the second dirt separation. The first and the second inlet port are disposed such that they are not registered with each other. Accordingly, the dirt particles suctioned are separated in two stages, thereby decreasing the possibility of occlusion of a filter and rapid deterioration of a suction force.

Abstract: The invention relates to a method for cleaning filters for dust-laden waste gases, including several filter elements (2) which are arranged vertically in a filter housing (1) and which have an upper open end (16) and a lower closed end (15) with at least one feed line (9) for the dust-laden waste gases and at least one discharge line (11) for the cleaned waste gases, in addition to a device for injecting surges of compressed air into the open end (16) of the filter elements (2). In order to reduce pressure fluctuations in the filter and to provide efficient cleaning with pulsations of compressed air in the low pressure range i.e. from approximately 0.8 to 3 bars, the filter is divided into several filter modules (1) respectively including at least one filter element (2). At least two filter modules (1) are arranged in a filter housing (10) or a filter chamber.

Abstract: The disclosure provides a system having a cage mounted in an air-moving system, such as a wet and dry vacuum cleaner, which provides energy-absorbing structural ribbing for a more robust cage. The energy-absorbing ribs can tolerate impacts better than the relatively stiff, axial ribs aligned in a longitudinal direction of the cage found in prior efforts. The energy-absorbing ribs are formed in a non-aligned direction to the longitudinal axis, that is, at some non-zero angle to the axis. Circumferential ribs can be formed at some angle to the energy-absorbing ribs.

Abstract: An on-board inert gas generation system provides first and second compressors in fluid communication with one another. The second compressor includes an inlet and an outlet. The inlet is in fluid communication with the first compressor. The second compressor is the final compressor stage of the system. An air separation module is fluidly connected to the outlet of the second compressor by a passageway. A vent passage is arranged between the outlet and the air separation module for venting fluid between the outlet and air separation module. The vent passage enables the flow from the second compressor to be increased thereby increasing compressor efficiency and increasing the inlet pressure to the air separation module, which enables use of a smaller air separation module.

Abstract: The apparatus is a portable paint spray capture apparatus that limits dispersion of sprayed paint and permits spray painting small surfaces in unenclosed areas without harming the environment or nearby objects. An open top container is located below the surface being painted and hoses interconnect the container to a vacuum device drawing air from the container and through a water trap that collects paint particles. Air leaving the water trap passes through an underwater mesh screen to form smaller bubbles to help separate out the paint particles. Air movers push air from opposite sides of and toward the center of the surface being painted. Significant air flow paths are thereby established from the sides of the spray area into the container below it, and virtually all of the paint not adhering to the surface being painted is collected by the water trap.

Abstract: A detachable dust bin for a vacuum cleaner. A container is provided with a removable sidewall which has an outlet opening which is adapted to be coupled to a source of vacuum. The container includes an inlet for connecting to a passageway which is connected to a vacuum nozzle. A duct extends vertically from the inlet within the container, and then laterally toward the removable sidewall. A filter is supported along the removable sidewall having a front surface facing the outlet of the duct, and a rear surface facing the outlet opening in the removable sidewall. Dirt laden air is drawn through the filter, duct, and vacuum nozzle. Dirt is separated from the air and collected within the container.