Abstract: An apparatus and method for separating material which includes solid and/or particulate matter from flowing liquid and/or gas. The apparatus includes a separation panel positioned in a fluid flow path, and the separation panel is housed in a separation chamber. Fluid can be introduced into the separation chamber by an inlet to establish a circular flow of the fluid within a confine of the separation panel, so material entrained in the fluid is trapped within the confine of the separation panel. The separation panel, separation chamber and inlet can be dimensioned and disposed such that as the apparatus operates, the flow of the fluid outside the separation panel is in a direction opposite to a direction of the flow of the fluid within the separation panel.

Abstract: Disclosed is a carpet cleaning machine having a revolving, cylinder-shaped, double-ended carpet cleaning member powered by a gear-driven drive shaft for removing dirty material from a carpet. In the improvement, the drive shaft is coupled to the first end and an idler shaft is coupled to the second end, is spaced from the drive shaft and supports the second end for rotation. Double-ended support of the cleaning member materially reduces problems arising from cantilever shafts used in prior art machines to drive cleaning members. Another embodiment has a centrifugal separator with an air stream exit mouth and two flow guides fixed with respect to such mouth. The flow guides have differing aperture areas and a cavity is between the guides for capturing material otherwise permitted to flow downstream and prematurely clog a mesh filter.

Abstract: An adaptor for a vacuum cleaner having a vacuum source (21) and an inlet tube (18) communicating with a nozzle opening (11) and ending in a chamber (15) which has an opening closed by a cover (17). A dust container (16) is normally placed in the chamber and is connected to the inlet tube. The adaptor is a separate unit (26) which, when the dust container (16) and cover (17) have been removed, can be fixed to the vacuum cleaner. The adaptor includes a cyclone separator (32) having an inlet side which is connected to the inlet tube (18) and an outlet side communicating with the inlet side of the vacuum source (21).

Abstract: A carpet cleaning machine includes a centrifugal separator with an air stream exit mouth having a mouth area. The improvement involves two air flow guides having, respectively, first and second apertures. The area of the second aperture is less than that of the first aperture and the guides define an annular cavity between them. Such cavity "captures" dirty material that would otherwise pass downstream into a mechanical filter and prematurely clog such filter. A new, related machine nozzle and method for removing dirty material from air flowing in a carpet cleaning machine are also disclosed.

Abstract: A moisture and contaminant separator for compressed air includes: an outer cylinder having an upper mist accumulator and a lower water collector; and an inner cylinder secured in a central portion of the outer cylinder having an impinging condenser formed in the inner cylinder provided with a plurality of leftward and rightward oriented air passages in the impinging condenser to allow the crossing impact, impinging, mixing, settling and condensation of water mist or contaminant particles laden in the compressed air stream into the separator to be dropped and collected in the lower water collector of the outer cylinder; upon the primary removal of water and contaminants from the compressed air stream, the mist still carried on the air stream will be accumulated on the inside wall of the upper mist accumulator and then drained into the lower collector for further removal of the mist and contaminants laden in the air; and the demisted dry air will be delivered outwardly through an upper port.

Abstract: The present invention provides a cyclonic air cleaning device having a self cleaning, replaceable cartridge filter. The device essentially includes a barrel having a vortex tube concentrically positioned therein and a cylindrical, pleated filter cartridge concentrically positioned within the vortex tube, and a cone portion removably attached to and extending downwardly from the bottom of the barrel. The cone funnels debris to a collection receptacle securely attached to the bottom thereof. The filter is held in place by an upper plate fixedly secured to the vortex tube, a lower plate, and a T-bar extending centrally through the two plates and filter. A wing nut engages the bottom end of the T-bar in abutting relation to the bottom plate to hold the filter in place.

Abstract: A compact cyclone filter train for the removal of hazardous and radiologi particles from a gaseous fluid medium which permits a small cyclone separator to be used in a very small space envelope due to the arrangement of the filter housing adjacent to the separator with the cyclone separator and the filters mounted on a plate. The entire unit will have a hoist connection at the center of gravity so that the entire unit including the separator, the filters, and the base can be lifted and repositioned as desired.

Abstract: An exhaust gas processing system is provided with a particle separating apparatus capable of separating and removing particles contained in an exhaust gas from the exhaust gas disposed between a front and a back exhaust pipes forming the exhaust gas discharge line. The particle separating apparatus includes a gas vessel defining a gas chamber for receiving the exhaust gas containing particles and discharged through a rear end portion of the front exhaust pipe, and an exhaust gas guide member disposed in the gas chamber and having guide walls defining an internal space and provided with openings through which the internal space communicates with the gas chamber. The guide walls are formed so as to guide the exhaust gas discharged into the gas chamber through the rear end portion of the front exhaust pipe so that the exhaust gas flows in vertical, whirling currents in the gas chamber.

Abstract: An exhaust vent guard for protecting the exit area of an air vent conduit includes an upper hood portion and integrally therewith a lower cage portion. The upper hood portion includes a top wall, a pair of sidewalls, and a front wall, which collectively provide a weather barrier to prevent the entry of rain, snow, and other debris into the air vent conduit. The lower cage portion includes a bottom wall, a pair of sidewalls, and a front wall, each of which are constructed and arranged with a plurality of openings for permitting the free flow of air through the lower cage portion while at the same time being small enough to prevent the nesting of birds inside of the exhaust vent guard. In a related embodiment, a similarly configured exhaust vent guard is used in combination with a vent frame and a pair of flow-control louvers which are pivotally mounted into the vent frame.

Abstract: A replaceable filter element is installed in a filter assembly including a filter housing. There is a substantially annular space between the filter element and the housing and an air inlet for introducing inlet air tangentially with respect to the annular space. The filter element employed has a closed top and an open bottom communicating with a hollow core. An annular filter media is included in the filter element, the filter media having a top end and a bottom end with an outwardly projecting flange at the bottom end. The outwardly projecting flange has an annular rib thereon, spaced from the filter media, to define a trough between the annular rib and the filter media for retaining debris thereon. When the filter element is removed for replacement, debris accumulated on the flange is retained in the trough.

Abstract: A gas elimination device for cellular fluids has a cylindrical chamber that is divided radially into two parts by a cylindrical filter centrally located in the chamber. The fluid inlet is directed tangentially to the outer part of the chamber to create a vortex flow. The vortex flow is stopped by passage of the fluid through the filter, and gas bubbles that have formed rise to the top of the outer part of the chamber. A hydrophobic membrane covers the top of the chamber and allows the gas to exit the chamber to the atmosphere. A one way valve formed in a two part cap covering the chamber prevents flow of air into the chamber. A float valve stops flow when the chamber fills with air.

Abstract: A filter element is provided. The filter element generally includes a first liner, a region of filter media positioned downstream from the first liner and a screen arrangement positioned along a portion of the first liner downstream surface and oriented to block a portion of the first liner to flow directly therethrough and into a portion of the filter media directly associated therewith. Preferred elements are generally cylindrical, having expanded metal outer and inner liners with pleated paper media positioned therebetween. The preferred screen arrangement includes a polymeric sleeve, partially embedded in one of the end caps. Also according to the invention an overall filter arrangement or assembly is provided. Such an assembly includes the filter element as well as a housing and a precleaner arrangement.

Abstract: An apparatus for primary air/oil separation for an oil-flooded air compressor, the apparatus includes a tank having a sidewall, a bottom end and a top end. The sidewall and ends define a tank separation chamber. The apparatus further includes a flow conduit for flowing an air/oil mixture from the compressor into the tank separation chamber. A primary separator element is located in the chamber and provides primary separation of the air/oil mixture. The primary separator element is flow connected to the flow conduit and includes a body with at least two discharge ends and an arcuate elbow flow connected to each of the at least two discharge ends. Each elbow has an outer peripheral portion and an inner peripheral portion. As the air/oil mixture is forced through the separator element, the oil is drawn to the outer peripheral portion and the compressed air is located in the inner peripheral portion. In this way, primary separation of the oil and the air is achieved.

Abstract: A filter (20) for use in an inflator assembly (10) is formed by combining a layer of filter media (22) with a barrier element such as metal foil sheet backing (24), and then subsequently wrapping the filter a plurality of times about a combustion chamber (16) located within the inflator assembly (10). The foil sheet backing (24) creates a barrier which causes the inflation gases to travel in a helical path about the combustion chamber (16). By providing a helical gas flow path, the filter (20) extends the filter path length without increasing overall dimensioning requirements of the filter, and produces centrifugal forces which improve particulate removal.

Abstract: A system for separating particulate solids and condensable vapor materials from a hot feed gas stream such as a fuel gas containing such materials, so as to provide a clean gas product stream. The system includes a cyclone-type separator in which coarser particulate solids are removed downwardly, and an overhead gas stream containing a reduced concentration of finer particles is passed through a cooling step such as a heat exchanger for solidification and removal of condensable materials, and then passed to a filter vessel. In the filter vessel, the cooled gas and solidified particles pass through a filtering surface for further removal of the finer particles and solidified materials, after which the cleaned product gas is removed through an upper outlet connection.

Abstract: A method and apparatus for separating material transported by air is disclosed which includes a separator casing having a tangential inlet adapted to receive a stream of air and entrained material and a plurality of exits. One of the exits of the disclosed separator is a material discharge exit which, like the inlet is peripherally attached to the casing. There are also two separate air exits including a first air exhaust conduit peripherally attached to the casing proximate the inlet and a second air exhaust conduit centrally disposed within the interior of the casing. Operatively associated with each of the air exits is a separator means, such as a perforated surface or screen, which removes or separates the entrained material from the air.

Abstract: A fluidized bed vessel includes a cyclone which has a leg for returning particulate material to the bed, and an eductor at the bottom of the leg for providing the gas to fluidize the bed and for inducing a downward flow in the leg to provide greater particulate separation from the gas in the cyclone.

Abstract: A gas filtration system which includes a primary separator for removing a majority of a particulate material from a gas stream. The primary separator discharges a filtered gas stream which retains a portion of the particulate material. The filtered gas stream from the primary separator is delivered to a secondary particulate source which introduces additional particulate material into the filtered gas stream to produce a conditioned gas stream containing primary and secondary particulate material. The output of the secondary particulate source is delivered to a secondary filter which removes the primary and secondary particulate material from the conditioned gas stream to output the resulting gas stream, substantially void of particulate material. The conditioned gas stream contains a minimum amount of particulate material necessary to achieve optimal efficiency and operating life within the secondary separator.

Abstract: A suction source is connected to the upper end of a vertical suction tube; a plug member slides upwardly within the tube under the action of the suction source and moves down by gravity when the suction source is cut off The suction tube has a bypass port above the plug member and a valve is operated by the movement of the plug member to close and open the bypass port when the plug reaches its lower and upper limit positions respectively. Therefore, the plug continuously reciprocates up by suction and down by gravity upon sequential closing and opening of the valve. The system is incorporated in a central vacuum cleaning apparatus which provides the suction source and has a filter. The reciprocating movement of the plug drives a hammer or brush to continuously remove the dirt accumulating on the filter.

Abstract: An air cleaner construction including a precleaner arrangement, a filter assembly and a scavenger arrangement is provided. In the precleaner arrangement, air directed into the air cleaner assembly is subjected to some particulate removal. The air from the precleaner arrangement is then directed into the filter assembly, for further particulate material. The scavenger arrangement is constructed and arranged to scavenge separated particulate material from both the precleaner arrangement and the filter assembly. A pulse jet cleaner assembly is provided to facilitate removal of particulate material from the filter assembly.

Abstract: An oil/vapor separator separates lubrication oil from refrigerant vapor in an air conditioning cycle. The separator includes a chamber in which are disposed upper and lower apertured buffer plates sandwiching a filter therebetween. Oil and vapor passing through the buffer plates and the filter exits the lower buffer plate in a swirling path so that centrifugal force displaces oil outwardly against a wall of the chamber, and the oil gravitates downwardly for collection at the bottom of the chamber. The refrigerant vapor is discharged through a vapor outlet pipe positioned centrally in the chamber. An apertured separating plate is situated between the lower buffer plate and the collected oil to isolate the collected oil from the swirling vapor. The vapor outlet pipe extends through the separating plate and is supported thereby.

Abstract: A system for cleaning documents of dust particles as the documents are moved to a print station in a terminal where an ink jet printer is used to print on the documents. A vacuum manifold is positioned upstream of the print station to clean a document of dust as the document is moved towards the printer. A cyclone dust collector is used to collect the dust particles gathered by the vacuum manifold. An air curtain system provides a curtain of air between the print head of the printer and the face of the document to be printed upon to keep any dust particles left at the print station from coming into contact with the nozzles or jets of the printer.

Abstract: A disposable two-stage air cleaner includes a housing forming an air inlet, a separation chamber, a dirt collection chamber, and an air outlet. A filter element is located between the separation chamber and the air outlet. The air inlet moves the air in a circular pattern in the separation chamber, whereby dirt is thrown outwardly by centrifugal force. An air scavenging system is employed in which air laden with dirt from the first-stage separation chamber is scooped into the dirt collection chamber and air from the dirt collection chamber is allowed to recirculate into the separation chamber after the air flow has been slowed so that the dirt falls from the air stream. The air cleaner thus provides performance which is equal to or better than reusable air cleaners of the prior art.

Abstract: A gas-liquid separating apparatus for separating gas and liquid of a gas-liquid mixture includes a drum, and a separator disposed in the drum. The gas-liquid enters the separator into a cylinder of the separator in a tangential direction, and thus flows along the inner wall surface of the cylinder so that centrifugal separation of the gas and liquid is effected. The gas is discharged into a gas-phase section of the drum. At least part of the primary isolated liquid is decelerated by a perforated plate of the separator from which the liquid flows into a liquid-phase section of the drum. Because the primary isolated liquid flowing into the liquid-phase section of the drum has a slow outflow velocity, it tends to flow upwardly in the vicinity of the cylinder due to the buoyancy of gas still entrained in the liquid. Accordingly, the gravitational separation of the entrained gas and liquid is facilitated.

Abstract: Lubricant in exhaust fluid from a pneumatic motor is extracted by a separator. The separator comprises a housing in which a cyclonic flow of the exhaust is created to expel the lubricant in the exhaust. The exhaust is directed through a turbine within the housing wherein lubricant is deposited on blades of the turbine and then expelled against a housing wall by rotation of the turbine. After passing through the turbine blades, the exhaust flow is forced to reverse direction thereby extracting additional lubricant due to centrifugal force. After the lubricant has been extracted, the exhaust flows through a filter to remove other particles before exiting the separator.

Abstract: An arterial filter includes a filter housing provided with a uniquely shaped housing cover. The housing cover is in the shape of a toroid which forms a coil-like tunnel which is enlarged midway about the circumference of the housing cover. The highest point of the toroidal channel is at the periphery of the housing cover, approximately 180.degree. from the inlet valve. A gas vent is located at this highest point on the top of the toroid-shaped housing cover. At the center of the housing cover is an indentation which is provided to both retain a cylindrical filter element inside the filter housing, as well as allow visibility directly through the central axis of the arterial filter to verify proper operation of the filtration process. As inlet blood circulates through the toroidal tube forming the filter housing cover, gaseous matter is allowed to buoyantly escape out of the gas vent located at the top of the raised section of the toroidal channel.

Abstract: A rotating drum divided in axial spaced compartments with one of the compartments includes paddles and coalescing material to separate the fluid from the liquid and the other compartment includes stationary oil pumping and water pumping means and an energy recovery means for effectively separating fluid such as oil from liquid such a water. Another embodiment includes a simplified version of the fluid/liquid separator adapted for zero gravity environment and includes means for purging the lines from air prior to pumping the liquid. An electrical sensing circuit including conductivity sensors or an electronic controller including pressure sensors serve to control the rate of removal of the separated component or controlling said purging means.

Abstract: A filter system 10 includes a pre-filter in a pre-filter zone 18 and a final filter in a final filter zone 22. The pre-filter is in the form of at least one inertial filter, e.g. an array 28 of axial flow cyclones 30. The final filter is in the form of a media filter 36 formed of a lofted bat of fibrous material which is of non-homogeneous structure through its depth. An upstream side is lofty, and a downstream side is of set structure. A contaminated fluid flow stream enters via an inlet 12. Contaminants are filtered out by the axial flow cyclones to be removed via a dust cover 32. Pre-filtered fluid flows via a chamber 20 through the media filter 36. After final filtration in the media filter it exits via a chamber 24 and an outlet 14.

Abstract: A separator comprises a cyclone for removing more dense particles e.g. sand and a filter for removing less dense particles e.g. organic material from a liquid e.g. water. The arrangement is such that the filter experiences a shearing/scouring force which assists in preventing blockage.

Abstract: A pressure side integrated air filter assembly for a turbocharged engine includes an air filter carrier which is designed and arranged to receive an air filter element and which is adapted to mount to the intake manifold of the turbocharged engine. The air filter carrier which receives an air filtering element is disposed within the intake manifold and the intake manifold cover serves as the air filter cover. A peripheral flange on the air filter carrier is used to support the air filter assembly by being clamped between the intake manifold cover and the intake manifold. This peripheral flange substitutes for the intake manifold gasket. The air filter carrier and the air filter element each have a trapezoidal shape in cross section as a way to conserve space within the intake manifold.

Abstract: An oil separator for reducing oil carryover from the vent port of the crankcase of an internal combustion engine, such as a diesel engine is provided. The separator includes a cylindrical housing filled with a filtration material and having both an inlet and an outlet in its upper portion and a downwardly disposed, frustro-conical wall that defines an annular chamber between its outer surface and the inner walls of the housing. The annular chamber defines a helical flow path through the filtration material in the housing for a stream of oil-laden air admitted through the inlet of the housing. Oil droplets are removed from the stream of air as it moves through the helical path both by impingement against the filtration material, and the by centrifugal impingement against the inner walls of the housing.

Abstract: A portable and compact room air purifier having an internal filter element through which air is drawn by a centrifugal fan and wherein the air is discharged generally uniformly and radially by passing between at least one generally arcuate scroll and a surrounding deflector. The purifier is automatically deactivated in the event of destruction or removal of the filter housing.

Abstract: A separator body 23 has a cylindrical internal surface 24 having an axis A arranged in use substantially horizontally. An inlet 19, 20 for a gas and liquid mixture, and respective outlets 53, 30 are provided in the body 23 for the liquid L and gas. The inlet 19, 20 is arranged such that the mixture leaving the inlet is directed substantially tangentially to the internal surface 24, whereby incoming mixture will travel circumferentially around the surface 24 to cause the liquid and gas to separate by centrifugal action. Catchment means 47 is provided which catches the liquid L travelling around the cylindrical internal surface 24 after separation of gas therefrom so as to direct the liquid toward its outlet 53.

Abstract: An air filtration system for use in capturing fugitive dust in industrial sweeping operations includes a hopper having internal structure for causing change in the direction of flow of suction air which enters the hopper along with debris collected during an industrial sweeping operation. A plurality of filters is disposed within the hopper for filtering the suction air, each one of the plurality of filters having filter media therein which can be repeatedly purged for cleaning and continuous reuse thereof. Structure is included for providing repeated purging blasts of air to the plurality of filters, and structure is associated with each one of the plurality of filters for causing the purging blasts of air to clean substantially the entire filter media of each one of the filters.

Abstract: Improved emission control apparatus for use with a diesel engine which may include an enclosed cylindrical housing having an inlet and an outlet. A particulate trap is disposed in the housing between the inlet and outlet for collection and removal of particulates from the engine exhaust. The particulate trap includes an upstream section of reduced diameter and a downstream section of a diameter greater than the cylindrical housing to form an annular pocket therearound. The upstream section is provided with peripheral walls in which are provided uniformly spaced, longitudinally disposed, slotted apertures.

Abstract: A filter system 10 includes a pre-filter in a pre-filter zone 18 and a final filter in a final filter zone 22. The pre-filter is in the form of at least one inertial filter, e.g. an array 28 of axial flow cyclones 30. The final filter is in the form of a media filter 36 formed of a lofted bat of fibrous material which is of non-homogeneous structure through its depth. An upstream side is lofty, and a downstream side is of set structure. A contaminated fluid flow stream enters via an inlet 12. Contaminants are filtered out by the axial flow cyclones to be removed via a dust cover 32. Pre-filtered fluid flows via a chamber 20 through the media filter 36. After final filtration in the media filter it exits via a chamber 24 and an outlet 14.

Abstract: An air cleaner construction including a precleaner arrangement, a filter assembly and a scavenger arrangement is provided. In the precleaner arrangement, air directed into the air cleaner assembly is subjected to some particulate removal. The air from the precleaner arrangement is then directed into the filter assembly, for further particulate material. The scavenger arrangement is constructed and arranged to scavenge separated particulate material from both the precleaner arrangement and the filter assembly. A pulse jet cleaner assembly is provided to facilitate removal of particulate material from the filter assembly.

Abstract: A filter device for compressed air including first and second filters, wherein the first filter is free from a variation in the filtering efficiency, and does not require periodic replacement of its packing, leading to a reduced maintenance cost of the first filter. The first filter is adapted to separate the liquid and solid particles from the compressed air passing therethrough, while the second filter is adapted to remove or eliminate any residual liquid and solid particles remaining in the compressed air passing therethrough.

Abstract: An air intake protection device includes a deflector for directing polluted inlet air in a cyclonic motion as it enters a pollution chamber forcing heavier pollutant particles toward the inside wall of the pollution chamber, causing them to fall into a debris collection chamber. Lighter pollutant particles are engaged by a non-planar filter and a second, final filter. Clean, filtered air is thereby forced through a clean air chamber to an air outlet which communicates the clean, filtered air from the device housing.

Abstract: A textile machine suction device for dust and other pneumatically conveyable waste includes a separator chamber, a negative pressure line discharging waste into the separator chamber, a first filter screen in the separator chamber for separating the waste from an air stream and for collecting the waste, a second filter screen disposed in the separator chamber, and a negative pressure source acting upon the first and the second filter screens. The two filter screens are disposed adjacent one another in a constellation causing an increasing outflow of air through the second filter screen with increasing soiling and impermeability of the first filter screen to the air stream. The negative pressure line forms a rotating air stream in the separator chamber approximately parallel to the first filter screen for forcing the waste and in particular yarn waste into a motion stripping soiling from the first filter screen.

Abstract: A separation device employing a gas separation filter and swirler vanes for separating gas from a gasliquid mixture is provided. The cylindrical filter utilizes the principle that surface tension in the pores of the filter prevents gas bubbles from passing through. As a result, the gas collects in the interior region of the filter and coalesces to form larger bubbles in the center of the device. The device is particularly suited for use in microgravity conditions since the swirlers induce a centrifugal force which causes liquid to move from the inner region of the filter, pass the pores, and flow through the outlet of the device while the entrained gas is trapped by the filter. The device includes a cylindrical gas storage screen which is enclosed by the cylindrical gas separation filter. The screen has pores that are larger than those of the filters. The screen prevents larger bubbles that have been formed from reaching and interfering with the pores of the gas separation filter.

Abstract: A ventilation apparatus, which is installed in the ceiling of a room, particularly a kitchen, laundry or the like. The ventilation apparatus (1) comprises a wall element (3) directed downwardly from the ceiling, which wall element is formed of a number of elongated parts (4) provided with vertical chambers (5). The shells (6) of the parts (4) are provided with inlet apertures (7), through which apertures and chambers the exhaust air is conducted out of the room.

Abstract: A vortex air precleaner having snap-fit, self-sealing vortex tubes. Each vortex tube includes a flexible lip projecting laterally outward from the tube and spaced from an end of the tube. An annular shoulder is located between the lip and the tube end and spaced from the lip to provide a groove therebetween. The portion of the tube extending from the shoulder to the tube end is tapered inwardly and is formed with a plurality of longitudinal slits to provide the tube end portion with radial flexibility. When the tube end is inserted within an opening in the wall of the precleaner, the end portion will flex inwardly enabling the precleaner wall to be engaged with the groove, and the flexible lip engages the surface of the precleaner wall to provide a tight sealed joint.

Abstract: An air inlet system of an engine includes a fan having a plurality of vanes in a radial arrangement for blowing air from a center of rotation of the fan towards a radially outward area. A fan case covers the fan and has an airflow supply opening formed in the vicinity of the center of rotation of the fan and an airflow path formed at the outer periphery of the fan to direct an airflow for cooling said engine. A communication path has an air intake formed in the vicinity of the airflow supply opening in the fan case and directs the introduced air to a carburetor of the engine.

Abstract: The improved carpet cleaning machine, intended for use with "dry" carpet cleaning systems using dampened granules or particles, can be used in either of two modes. One involves carpet "brushing" for dirt removal by urging particles into the carpet and along the fibers. The other involves later vacuuming for particle removal. To facilitate the latter, one embodiment of the machine has first and second particle-removing media such as a concentrically-mounted cyclone separator and conical screen filter, respectively. The separator has air flowing through it downwardly along a vortical path and then upward, such air flow often carrying along a few particles. Such high-velocity particles impinge on the outer surface of the screen filter and many particles adhering to such filter are dislodged. The filter is said to thereby be "purged" or cleaned. There may also be a third medium and even a fourth medium to remove very fine particles before the air is expelled back into the room.

Abstract: A separator which can be used for separating water from an air/water mixture in an aircraft where the air is to be supplied to electronics equipment comprises a chamber containing a generally tangential inlet tube through which a mixture is supplied to a curved side wall section of the chamber to separate water from the air by centrifical action. The efficiency of the unit is improved either by moving the filter unit away from the center of the chamber or by providing a guide plate between the filter unit and the curved side wall on which the water coalesces. In this latter case, the filter unit can also be offset from the center of the chamber to give even greater improvement and efficiency.

Abstract: An improved machine convertible for brush-aided cleaning or vacuuming includes a pair of powered brushes counter-revolving for stroking solvent-dampened carpet cleaning particles through the carpet and along carpet fibers during initial cleaning. A separately-powered pod is detachable from the machine during brush-aided carpet cleaning and attached to a machine-mounted vacuum nozzle for carpet vacuuming to pick up the dirt-laden particles. The pod has first and second media selected to remove particles of differing sizes from air flowing through the pod. During initial carpet cleaning when vacuum is not needed, the pod may be detached and used in another area for hand-vacuuming carpeted stairs and other "small-area" places.

Abstract: An air cleaner assembly for capturing and filtering fumes is provided which comprises a housing having an inlet and an outlet, a pair of filter cartridges supported therein and a blower. A channel and baffle assembly direct the flow of air drawn into the housing in a vortical pattern around the filter cartridges to separate heavier particles in the air and to efficiently draw the air through the filter cartridges. The separated particles collect in a pair of dust trays that are provided with flow directional lips to prevent the vortical air flow from disturbing the deposited particles. A backflushing assembly cleans the filter cartridges of the particles that are collected thereon by pulsing the particles away with a blast of air directed through the entire length of the filter cartridges.

Abstract: A method for cleaning a cyclone which separates excess powder aspirated from a powder coating cabin, and cyclones for carrying out this cleaning method are created, with cleaning air being aspirated during the cleaning operation from the lower end of the cyclone via the cyclone interior, the immersion tube and the clean gas channel, and at least the outer surface of the immersion tube and the cyclone interior facing surface of the bottom of the clean gas channel is cleansed by means of compressed air blasts which exit from nozzles and directly impact these surfaces.

Abstract: When work processing equipment and more particularly floor sanding machines have means for drawing off dust, they are also fitted with a device for aspiration of the dust laden air and the collection of the dust. The device in accordance with the invention comprises a filter device, arranged in the flow path of the air, manufactured of an air permeable material retaining the dust so that dust-free air is released into the surroundings.In the flow path upstream from the filter device there is a dust separator, which at the lower side thereof has a dust outlet opening and above the dust outlet opening has an air outlet opening facing the filter device. Underneath the dust outlet opening it is possible for a dust collecting container to be connected with the result that the separated dust drops under the effect of gravity into the container. It is convenient if the filter device delimits a filter chamber with a dust outlet opening on the lower side.