Abstract: This invention relates to a closing device for a housing of an air filter that can be closed with a housing cover. The assembly process is to be simplified and accelerated, while the number of parts required is to be reduced at the same time. According to the invention, this is achieved in that the housing cover and the housing can be connected to one another by means of a locking frame which surrounds the housing cover and the housing in the region of the housing edge, said locking frame being positionable in closed position by means of translatory motion, in which position it presses the housing cover onto the housing edge.

Abstract: A filter cover assembly for an air conditioning unit is disclosed. The filter cover assembly allows a user to easily install a filter in a casing of an air conditioning unit through an opening provided on the casing and to easily remove and mount the filter cover assembly from and to the opening of the casing, so that the user can conveniently exchange the filters. The filter cover assembly is mounted to the opening of the casing of the air conditioning unit to close the opening, with a filter installed in the casing to remove impurities from air flowing into the air conditioning unit. The filter cover assembly includes a first filter cover, a second filter cover and a rotary fastening unit to fasten the first filter cover to the second filter cover.

Abstract: An air filter system for use by airline passengers on commercial airlines and the like. The housing is configured to clamp to the gasper air supply nozzle of the airliner. The housing is configured to direct air from the air supply nozzle through the filter medium. Thus, the present invention provides a filter which may easily be installed by an airline passenger so as to mitigate airborne contaminants from the air supply nozzle of the airliner. The air filter system provides a flow of comparatively clean air to the passenger and the flow of comparatively clean air directs undesirable airborne contaminants found within the passenger cabin of the airliner away from the passenger, thus forming a region of comparatively clean air generally around the passenger.

Abstract: A V-pack filter includes a frame construction having a first frame structure and a second frame structure. The V-pack filter also includes first and second panel sections mounted in extension between the first and second frame structures. The first panel section has first and second ends. The second panel section has third and fourth ends. The first and third ends have a first distance therebetween while the second and fourth ends have a second distance therebetween. The second distance is generally greater than the first distance. The first and second panel sections and the second frame structure define an air flow aperture. A seal arrangement circumscribes the air flow aperture and projects outwardly from the second frame structure. The first frame structure defines a first receiver indent. Assemblies and methods are also included.

Abstract: An air intake duct for a vehicle having a cuttable groove at an external wall of an air exhaust port can be applied to any vehicle regardless of whether an air filter is adopted, thus providing cost-effectiveness, preventing air leakage when the air filter is not used, and increasing the air-conditioner/heater function of the vehicle.

Abstract: A filter element is includes a cylindrical media pack defining a central open volume and a longitudinal axis; a first end cap having a central aperture in flow communication with the central open volume; and a second, closed end cap having a central region closing an end of the media pack central, open volume. The closed end cap includes a projection extending axially outwardly therefrom and positioned at a location intersected by the longitudinal axis. An end cover for an air cleaner includes an inner side including a central projection thereon. Preferably, the central projection comprises a wall that includes an outer perimeter defining a regular polyhedron having at least five sides. An air cleaner comprises a cylindrical filter element having a first open end cap, a second closed end cap, and a cylindrical media pack extending therebetween. The first end cap defines an internal radial seal region. The second, closed end cap has a central region including a circular recessed portion.

Abstract: Embodiments of a key system for filters and their connecting heads/holders are shown. The filter cartridge and its holder each have a keyed surface, one being a protruding “key” and one being a recessed “lock”. Cooperation of these keyed surfaces is required in order for the filter cartridge to be installed in the holder, so that mismatched cartridges cannot be installed into the holder, for example, to prevent a particular type of cartridge from being placed in a filtration or other process where it would be inappropriate, or undesired. The keyed surfaces are selectively locate-able preferably at different circumferential locations on a perimeter of the filter and a corresponding location on a perimeter of the head/holder. The perimeter may be, for example, on an outer shoulder surface of a filter and an inner surface of a valve head, or on outer and inner surfaces of connectors that provide a liquid seal between the filter and the head/holder.

Abstract: An oil separator for oil-flooded rotary vane vacuum pumps has a filter housing (10) and a plurality of filter cartridges (14) disposed therein through which the pumping medium flows. The filter cartridges (14) are each inserted through a respective opening (16) in an outer housing wall (12) of the filter housing (10) and are secured to the housing wall (12) so as to be detachable and tight with respect to media.

Abstract: An air cleaner is provided with a reduced restriction precleaner cooperating with a tangential inlet and centering and locating an annular filter element, and reducing inlet restriction.

Abstract: A filtering device for filtering fluids includes a filter housing, a filter element and an attaching device for attaching the filter element to the housing. The filter element is attachable to the filter housing using a bayonet lock.

Abstract: A vehicle includes an operator's cab having an air inlet and an air filtration system, and an air outlet, wherein the air filtration system comprises a filter element, and a filter container for receiving the filter element, the operator's cab comprising a chamber for receiving the filter container housing the filter element, the filter container being movable into and out of the chamber between a filtering position and an emptying position, wherein with the container in the emptying position the filter element may be removed from the container, and the container emptied of debris, and wherein the filter container comprises at least one air inlet opening and at least one air outlet opening, and wherein with the container in the filtering position the openings are aligned with the air inlet and air outlet such that air may be drawn through the filter into the cab.

Abstract: A filter element is includes a cylindrical media pack defining a central open volume and a longitudinal axis; a first end cap having a central aperture in flow communication with the central open volume; and a second, closed end cap having a central region closing an end of the media pack central, open volume. The closed end cap includes a projection extending axially outwardly therefrom and positioned at a location intersected by the longitudinal axis. An end cover for an air cleaner includes an inner side including a central projection thereon. Preferably, the central projection comprises a wall that includes an outer perimeter defining a regular polyhedron having at least five sides. An air cleaner comprises a cylindrical filter element having a first open end cap, a second closed end cap, and a cylindrical media pack extending therebetween. The first end cap defines an internal radial seal region. The second, closed end cap has a central region including a circular recessed portion.

Abstract: To enlarge an opening area in an element retainer supporting a clean side of an element, to reduce resistance to air passage and thereby to enlarge intake air quantity. The interior of an air cleaner is surrounded by a case and a lid is partitioned by an element into a dirty side and a clean side. An opening portion on the side of the clean side of an element holder supporting the element is covered by an element retainer, and the element retainer is formed in the shape of a louver.

Abstract: A filter rack is spring loaded to an expanded position to help hold the filter rack at various positions and orientations within a furnace enclosure. The rack may also include a spring-loaded channel whose position adjusts to receive filters of various widths. One set of springs urge two side members of the filter rack outward, while another set of springs urge the channel inward.

Abstract: An air cleaner, particularly for an engine of a vehicle, includes a case, a cover detachably mounted to the case, a filter element accommodated in the case, the filter element having a cylindrical shape having a central axis therealong, and a pair of support members mounted to the cover so as to be engaged with both end portions of the filter element in an axial direction thereof to hold the filter element between the support members. In such air cleaner, removing the cover from the case removes the filter element from the case together with the cover and disengaging the filter element from the support members removes the filter element from the cover.

Abstract: An air treatment apparatus has a housing and a vent cover. The housing has a treatment element, at least one entrance and a fan secured in the hollow housing and facing the entrance. The vent cover is detachably and replaceably attached to the housing. At least one vent is selectively defined in one of the top face and the front face of the vent cover. With such an air treatment apparatus, the vent cover can be interchanged between a jet-flow one or a laminar-flow one.

Abstract: The invention provides a filter assembly for use in a vacuum cleaner having a first filter portion that includes a foam filter, and a second filter portion located downstream of the first filter portion and containing a HEPA grade filter medium, the first and second filter portions being held directly adjacent one another. The first filter portion also includes an electrostatic filter located on a side of the foam filter facing the second filter portion. The foam filter of the first filter portion is, in use, exposed directly to a dust-laden airflow. The provision of the electrostatic filter on the foam filter eliminates the possibility of dust initially retained by but later released from the foam filter escaping from the first filter portion.

Abstract: A filter housing assembly including a substantially frusto-conical shaped housing member having an open end portion and a substantially closed dome shaped portion, the housing member being adaptable for receiving a filter member therewithin and having at least one opening extending through the dome shaped portion for allowing air to enter therewithin. A first end cap member adaptable for engaging one end portion of a filter member is receivable within the housing member, and a second end cap member adaptable for engaging the opposite end portion of a filter member is engageable with the housing member. The second end cap member includes an opening for allowing air to exit the housing member. The housing member includes a centering mechanism engageable with the first end cap member for facilitating centering of the filter member within the housing member when the first end cap member is positioned within the housing member.

Abstract: Embodiments of a key system for filters and their connecting heads/holders are shown. The filter cartridge and its holder each have a keyed surface, one being a protruding “key” and one being a recessed “lock”. Cooperation of these keyed surfaces is required in order for the filter cartridge to be installed in the holder, so that mismatched cartridges cannot be installed into the holder, for example, to prevent a particular type of cartridge from being placed in a filtration or other process where it would be inappropriate, or undesired. The keyed surfaces are selectively locate-able preferably at different circumferential locations on a perimeter of the filter and a corresponding location on a perimeter of the head/holder. The perimeter may be, for example, on an outer shoulder surface of a filter and an inner surface of a valve head, or on outer and inner surfaces of connectors that provide a liquid seal between the filter and the head/holder.

Abstract: The present invention relates to a structure for confirming as to whether a filter is mounted into a vacuum cleaner. The structure for a vacuum cleaner according to the present invention comprises a cover including a discharging port for discharging air from which foreign materials are removed, a movable member of which positions are changed depending on coupling states thereof, and a support portion for moving the movable member; and a filter including a coupling means having a plurality of protrusions coupled to the support portion of the cover, a plurality of indented portions formed between the plurality of the protrusions, and an engagement piece formed to be spaced apart from the protrusions for changing the position of the movable member. The filter is detachably mounted to the support portion.

Abstract: A filter element is includes a cylindrical media pack defining a central open volume and a longitudinal axis; a first end cap having a central aperture in flow communication with the central open volume; and a second, closed end cap having a central region closing an end of the media pack central, open volume. The closed end cap includes a projection extending axially outwardly therefrom and positioned at a location intersected by the longitudinal axis. An end cover for an air cleaner includes an inner side including a central projection thereon. Preferably, the central projection comprises a wall that includes an outer perimeter defining a regular polyhedron having at least five sides. An air cleaner comprises a cylindrical filter element having a first open end cap, a second closed end cap, and a cylindrical media pack extending therebetween. The first end cap defines an internal radial seal region. The second, closed end cap has a central region including a circular recessed portion.

Abstract: An air filter assembly which filters and purifies air prior to entering an external combustion engine includes a conical radially pleated filter element disposed over a filter carrier. When assembled, the pleats of the filter element are trapped between a plurality of internal teeth on an internal comb section of the filter carrier and a plurality of external teeth on an external comb section of an opening of the air cleaner box. The filter carrier further includes a plurality of struts which further shapes the filter element. A locking mechanism secures the air filter assembly to the air cleaner box.

Abstract: An air filter system for use by airline passengers on commercial airlines and the like. The housing is configured to clamp to the gasper air supply nozzle of the airliner. The housing is configured to direct air from the air supply nozzle through the filter medium. Thus, the present invention provides a filter which may easily be installed by an airline passenger so as to mitigate airborne contaminants from the air supply nozzle of the airliner. The air filter system provides a flow of comparatively clean air to the passenger and the flow of comparatively clean air directs undesirable airborne contaminants found within the passenger cabin of the airliner away from the passenger, thus forming a region of comparatively clean air generally around the passenger.

Abstract: A serviceable filtering oil removal cartridge for use in a compressed air assembly of a vehicle air brake system includes a housing having a first end and a second end. A filtering element is disposed within the housing for agglomerating and removing oil from compressed air entering the oil removal cartridge. A load plate is disposed within the housing for supporting the filtering element. The load plate includes a connecting portion dimensioned to allow the oil removal cartridge to be removed and installed as a single unit. The connecting portion is preferably a threaded annulus. A thermal vent can be included, wherein pressure is released from the oil removal cartridge upon reaching a threshold temperature.

Abstract: A serviceable filtering oil removal cartridge for use in a compressed air assembly of a vehicle air brake system includes a housing having a first end and a second end. A filtering element is disposed within the housing for agglomerating and removing oil from compressed air entering the oil removal cartridge. A load plate is disposed within the housing for supporting the filtering element. The load plate includes a connecting portion dimensioned to allow the oil removal cartridge to be removed and installed as a single unit. The connecting portion is preferably a threaded annulus.

Abstract: The present invention provides an air-conditioning air filter capable of cleaning and replacing only a filter element thereof for resources saving, refuse reduction, and cost reduction, and also preventing air leakage due to expanded deformation of a main box.

Abstract: An air filter/oil separator assembly comprises a housing having an outer wall and a channel disposed therein between a primary gas inlet and a primary gas outlet. An air filter is joined to the primary gas inlet for filtering air from the immediate environment for introduction into an engine intake system. The housing includes a secondary inlet port through the outer wall, for receiving an air-oil mixture taken from an engine crankcase breather, and a secondary outlet port through the channel wall. A baffle is disposed axially within the housing and extends axially between the outer wall and the channel wall. The baffle, outer wall, and channel wall together define a first and second air flow passageway between the secondary inlet and secondary outlet ports. A removable filter element is disposed within at least one of the first and second passageways to capture air-borne particulate matter and/or aid in the coalescence and separation of oil within the air-oil mixture.

Abstract: A filter assembly for collecting material that is entrained in a gas stream includes a housing for a tubular elements arranged for the gas stream to flow through its wall, the housing having inlet and outlet ports for the gas that is to be filtered. The assembly includes a flow conduit which has a first conduit opening for communication with one of the ports for the gas that is to be filtered and a second conduit opening for communication with the filter element. The housing and the flow conduit are arranged so that the formation of a seal between the first conduit opening and the said port involves sliding the flow conduit generally transversely relative to the direction of flow of fluid through the port.

Abstract: An air filter housing (12) includes twist and lock structure (46) having a first position (FIGS. 5, 6) permitting axial movement (120) of a cover (44) and base (38) relative to each other, and being rotatable in a first direction (48) from the first position (FIG. 6) to the second position (FIG. 7), and in the second position (FIG. 7) preventing axial movement of the base (38) and cover (44) relative to each other, and being rotatable in a second opposite direction (78) from the second position (FIG. 7) to the first position (FIG. 6). Anti-rotation lock structure (80) provides a rotational retention force holding the twist and lock structure (46) in the second position (FIG. 7).

Abstract: An air cleaner assembly is provided. The air cleaner assembly includes preferred one-piece cover/filter element construction. A method for manufacturing a preferred cover assembly with a filter element construction nondetachably secured thereto, is provided.

Abstract: A filter element is includes a cylindrical media pack defining a central open volume and a longitudinal axis; a first end cap having a central aperture in flow communication with the central open volume; and a second, closed end cap having a central region closing an end of the media pack central, open volume. The closed end cap includes a projection extending axially outwardly therefrom and positioned at a location intersected by the longitudinal axis. An end cover for an air cleaner includes an inner side including a central projection thereon. Preferably, the central projection comprises a wall that includes an outer perimeter defining a regular polyhedron having at least five sides. An air cleaner comprises a cylindrical filter element having a first open end cap, a second closed end cap, and a cylindrical media pack extending therebetween. The first end cap defines an internal radial seal region. The second, closed end cap has a central region including a circular recessed portion.

Abstract: An air filter housing (12) includes twist and lock structure (42) having a first position (FIGS. 5, 7, 10) permitting axial movement (66) of a cover (34) and base (36) relative to each other, and being rotatable in a first rotational direction (44) from the first position to a second position (FIGS. 4, 6, 9, 12), and in the second position preventing axial movement of the base and cover relative to each other, and being rotatable in a second opposite rotational direction (64) from the second position to the first position. Anti-rotation lock structure (70, 110, 140) provides a rotational retention force holding the twist and lock structure in the second position. The anti-rotation lock structure includes an arm (74, 112, 142) flexibly bendable about a bend line extending parallel to the axis (14) of the housing.

Abstract: An air cleaner wherein an element for filtering intake air and an absorber member for absorbing fuel vapor are disposed within a housing. Within the housing, a stopper portion for tentatively attaching the absorber member and a seat portion capable of receiving the absorber member at a side opposite from the stopper portion are formed near a site where the element is mounted. The element or the absorber member has a presser portion that retains the absorber member in a state where the absorber member is pressed against the seat portion, when the element is mounted within the housing.

Abstract: A air filtering assembly for removing particulate matter from air supplied through HVAC ducts. The air filtering assembly includes a frame assembly including a connection assembly adapted for coupling to an air vent, and an air filter couplable to the frame assembly and positioned adjacent to the air vent for filtering the air directed through the air vent.

Abstract: An air filter assembly which filters and purifies air prior to entering an external combustion engine includes a conical radially pleated filter element disposed over a filter carrier. When assembled, the pleats of the filter element are trapped between a plurality of internal teeth on an internal comb section of the filter carrier and a plurality of external teeth on an external comb section of an opening of the air cleaner box. The filter carrier further includes a plurality of struts which further shapes the filter element. A locking mechanism secures the air filter assembly to the air cleaner box.

Abstract: An air filtration system for an internal combustion engine is provided wherein the air filter has an exit orifice for sealingly engaging the air intake duct of a carburetor via a friction-fit. The friction-fit provides an integrated seal between the orifice and duct such that additional sealing means are not required. The friction-fit can be provided by a plurality of ridges formed along the interior surface of the orifice or by decreasing the cross-sectional area of the orifice in the direction of the internal cavity formed by the filter walls. Decreasing the cross-sectional area of the orifice is accomplished by providing a plurality of stepped diameters of a bottom surface material or a surface that conically slopes inward towards the cavity. In addition, the air filter can be secured to a platform of an engine by a holding arm having a hook shaped distal end with a catch that can be disengaged by pulling at a grip, thus allowing easy access to the filter for inspection, cleaning, and replacement.

Abstract: An air cleaner assembly having a body member and a removable cover is provided. The assembly includes a lock assembly for engagement between the cover and the body member. The preferred lock assembly is a rotation activated lock assembly movable between locked and unlocked orientations by a selected amount of relative rotational movement between the cover and the body member.

Abstract: A smoke exhauster includes a housing having one or more openings for receiving a filter device each. The filter device includes one or more latches for securing the filter device to the housing. One or more springs are disposed between the filter device and the housing for biasing the latches to engage with the housing and for securing the filter device to the housing. The filter device may be detached from the housing without additional tools. A retainer is pivotally secured to the housing for retaining the side of the filter device opposite to the latches.

Abstract: A clean room ceiling filter system has a filter unit received by a filter unit receiving unit, the filter unit and filter receiving unit define cooperating latch and keeper structure that deflects into fastened engagement and releases from within the clean room by simultaneous pivoting of each latch member of each set of latch members. A tubular rod within the filter unit allows dispensing test material onto the filter media from within the clean room and adjustment of an air flow damper also from within the clean room.

Abstract: An air cleaner for purifying air is disclosed. The air cleaner includes a housing having a first shell mounted to a second shell. The air cleaner also includes a filter disposed within the second shell and having a first side and a second side. Also, the air includes a flexible seal disposed between the first side of the filter and the first shell of the housing. At least one cam is rotatably mounted to the second shell and adapted to selectively engage the second side of the filter to compress the seal between the first side of the filter and the first shell of the housing.

Abstract: A filter unit with a filter element receptacle and a filter element, where the filter element having a filter element box in which is inserted a filter pack or a filter medium. The filter element box has a filter element cover on which there is a peripheral projection which engages in a corresponding taper on the filter element box. In addition, the filter element can be inserted into the filter element receptacle which engages with a sealing effect in at least one corresponding packing groove of the filter element cover or box with at least one sealing web molded onto it.

Abstract: Contamination Control System includes a housing having a cartridge input-output port and an application input-output port The cartridge is coupleable to the cartridge input-output port and of a size to completely fit in an interior of the housing. A dual isolation interface is provided between cartridge and housing so that each entity may be separately isolated at the fluid interface. The isolation interface is resiliently engageable to make the fluid path open and close. The cartridge has a body physically defining a multi-region interior chamber, the chamber in fluid communication with an input and an output and defining a fluid flow path therebetween larger than any dimension of the body.

Abstract: An air cleaner assembly having a body member and a removable cover is provided. The assembly includes a lock assembly for engagement between the cover and the body member. The preferred lock assembly is a rotation activated lock assembly movable between locked and unlocked orientations by a selected amount of relative rotational movement between the cover and the body member.

Abstract: An adjustably directable clean air delivery supply assembly which provides clean air for use in weather protected environments. This assembly is, doorway passable and rollably positioned, to be utilized where activities require very clean air per strict specifications. When located, the device can quickly be unfolded and positioned for operation to produce clean air in the desired direction at minimal-eddy producing airflow. Surrounding unfiltered air is drawn in just above floor level through a pre-filter into a airtight lower hollow housing, which contains an interior powered air moving assembly, and discharged upwardly into the tower hollow housing which is supported on top of the lower hollow housing. Secured to the tower hollow housing is an adjustable telescoping height and rotatable positioning structural tube, which receives and directs the air upwardly through a self-sealing bellows into the top final filter hood assembly.

Abstract: An air filter element includes structure for supporting a secondary air filter element mounted within it, such as a safety element. In certain arrangements, the air filter element includes a media pack having first and second ends and defining an open filter interior. A first open end cap is positioned on the media pack first end. A second closed end cap is positioned on the media pack second end. The spacer construction has attachment structure and positioning structure. The attachment structure secures the spacer arrangement within the open filter interior, and the positioning structure extends from the attachment structure. In one illustrated embodiment, the spacer construction includes an insert embedded within the second closed end cap. In one illustration, the insert has a circular disk with feet and a centrally extending post with a fin arrangement.

Abstract: A filter assembly for use in filtering air in an air conditioning system has a front grille through which air enters the assembly and a rear grille through which filtered air is exited. A frame is attached to the grilles, joining these grilles together to form a container structure. An air permeable filter element in the form of a pleated or undulating sheet is installed in the container structure, the opposite ends of the pleated sheet being attached to opposing sides of the frame. The pleated sheet runs between the front and rear grilles and extends from the top to the bottom of the grilles. The filter sheet has a filtering media which may be of microglass on the surface thereof which faces the front grille and a stiffened backing on the surface facing the rear grille.

Abstract: An air cleaner assembly having a body member and a removable cover is provided. The assembly includes a lock assembly for engagement between the cover and the body member. The preferred lock assembly is a rotation activated lock assembly movable between locked and unlocked orientations by a selected amount of relative rotational movement between the cover and the body member.

Abstract: An air cleaner assembly having a body member and a removable cover is provided. The assembly includes a lock assembly for engagement between the cover and the body member. The preferred lock assembly is a rotation activated lock assembly movable between locked and unlocked orientations by a selected amount of relative rotational movement between the cover and the body member.

Abstract: A replaceable air filter system for milking machine pulsators has a base with an internal channel that communicates with the air inlet of a milking machine pulsator when the base is mounted on the pulsator. An air filter section is releasably mounted to the base and includes a case, air filter medium attached to the case, and a connector extending from the case which connects to an open bore of the base. The air filter section can be releasably secured to the base. The air filter medium may be formed of multi-fold filter material to provide a large area filter for the input air. When the filter medium is saturated or clogged, an operator can detach the air filter section from the base and replace it with a new air filter section quickly and conveniently.

Abstract: A vent filter assembly for use with containers containing hazardous chemical or radioactive waste, the assembly having a first stage attached to the container having a first filter media, preferably sintered steel, which allows unaltered passage of pure gas but which blocks passage of particulate matter, and a second stage removably attached to the first stage, the second stage allowing passage of gas but blocking passage of particulate matter and volatile organic solvents. Removal of the second stage from the first stage allows a pure sample of gas to be drawn through the first stage, whereupon the second stage can be reattached to the first stage to provide the required filtering of volatile organic solvents.