Abstract: A filter arrangement includes a filter element, a frame construction secured to the filter element, and a handle member secured to the filter element. In preferred embodiments, the handle member is secured to the frame construction. Preferably, the filter element includes a central core member, wherein fluted filter media is coiled around the central core member. Preferably, the central core member includes a plurality of corrugations, wherein the corrugations mateably engage at least some flutes. Preferably, the handle member is integral with the central core member, and also includes a fastening member for connection to a frame construction on the filter element. Methods for cleaning air and servicing an air cleaner preferably include constructions as described herein.

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: A filter element includes a region of filter media and at least one end cap secured to the filter media. The end cap includes a protrusion that is shaped in order to mate with another filter element. The shaped end cap can act as a centering device. A filter assembly can be constructed including a first filter element and a second filter element. Each of the first and second filter elements has an end cap that includes a projection and recess arrangement. A seal is formed between the first filter element and the second filter element by compression of the two elements together with an engagement or inter-nesting of the projection and recess arrangement of the first filter element with the projection and recess arrangement of the second filter element. The filter element assembly is useable in a variety of systems including a gas turbine air intake system.

Abstract: A filter device, especially for filtering the intake air of an internal combustion engine, which includes a housing with an unfiltered air inlet and a clean air outlet, and a substantially cylindrical, replaceable filter insert disposed in the housing, which separates an unfiltered air zone within the housing from a clean air zone. An axial seal is provided on at least one end disk of the cylindrical filter insert, which seal interacts with a sealing surface on the housing to seal the unfiltered air zone from the clean air zone. A clamping wedge is also provided, which exerts a force on the filter insert to urge the axial seal reliably against the sealing surface of the filter housing.

Abstract: To provide a gas compressor in which fretting wear due to vibration of an oil separation filter is prevented to thereby achieve an improvement in durability. A gas compressor is provided with a press-fixing unit for press-fixing end portions of an oil separation filter.

Abstract: Disclosed is a vacuum cleaner filter which is detachably mounted into a dust collecting chamber of a main body of the vacuum cleaner and which filters dust contained in the air sucked into an air inlet of the dust collecting chamber, said filter comprising: a cylindrical filter body having a plurality of open parts and an external screw section on the outer periphery of the upper part thereof; a porous filter paper for covering the open parts; and a cover having a through hole fitting with the air inlet and an internal screw section corresponding to the external screw section. Since the cover is screwed to be tightly fastened to the filter body, it is possible to secure a complete closing of the filter body with the cover even when the filter is used for a long time.

Abstract: A filter device having a filter element arranged in a filter housing that can be sealed by a housing lid with a sealing ring. The medium to be filtered is supplied to the filter element through an inlet opening in the filter housing. On the filtered side of the filter element, the filtered medium is discharged through an outlet opening in the filter housing. The housing lid is constructed in two parts and includes an inner lid and an outer lid. The inner lid can be inserted into a housing opening, with the sealing ring arranged between the inner lid and the wall of the housing opening. The outer lid covers the housing opening and is connected with the wall of the housing opening by a locking mechanism.

Abstract: A filter cartridge having a unitary construction with a pleat pack filter formed securely about an interior screen for installation in the tube sheet of a baghouse. Opposite ends of the pleat pack are integrally received within a bottom end cap and an upper fitting. The bottom end cap may be molded to follow the contour of the pleat pack, or may be molded as a disk with an inwardly projecting groove to centrally align the pleat pack therein. The upper fitting is formed of a resiliently flexible material and includes an upper flange to overlie and seal with the upper surface of the tube sheet, a tube sheet mouth insert to seal with a circular opening in the tube sheet, a contoured transition to seal with the lower surface of the tube sheet, and a lower cylindrical collar which permanently secures the upper end of the filter. The contoured transition of the fitting is alternatively molded with either an exterior bulge or an interior bulge.

Abstract: A principal object of the present invention is to provide a method for manufacturing a filter element having a resin-molded frame, which permits to easily form the resin-molded frame, even when the filter has a complicated shape. The above-mentioned object can be achieved by providing the method for manufacturing the filter element, which is characterized by comprising the steps of: semi-curing resin in a prescribed shape to prepare a semi-cured resin; inserting forcedly at least one part of a filter into the semi-cured resin; and curing the semi-cured resin into which the at least one part of the filter has been forcedly inserted.

Abstract: A separator for liquid, in particular for removing oil from crankcase gases, having a cover (11) into which a mount (13) for a cylindrical separating cartridge (14) is incorporated. The separating cartridge is composed, for example, of a non-woven separating material (20) wound around a support body (22) having end plates (33) on the end faces (32) of the support body. The end plates (33) may be composed, for example, of a two-component synthetic resin material. This results in a stable component which can be sealed utilizing the elasticity of the end plate (33) when pushed into the mount (13). This results in a cost effective exchangeable part in which several seals are saved in the complete structural component and yields a structural unit having increased economic effectiveness.

Abstract: There is provided an air filter element which is used by fitting a central opening in its end plate on a cylindrical portion projecting into a casing, wherein the air filter element has a novel seal construction (end plate). An end plate (10) closing the end surface of a hollow cylindrical filter portion (2) includes a soft inner peripheral seal portion (11) capable of sticking to the outer surface of a cylindrical member (33) and a rigid closure portion (13) which is disposed on the outer periphery side of the inner peripheral seal portion and in which the end surface of the filter portion is embedded, the end plate being of composite construction in which the inner peripheral seal portion (11) and the closure portion (13) are integrally molded. On the outer periphery side of the inner peripheral seal portion (11), a groove (12) axially extending from an end surface (10a) of the end plate is formed along the opening.

Abstract: Air filter assemblies comprise an air filter housing an air flow passageway extending therethrough, and a connection flange to facilitate attachment with an air filter member. The air filter member comprises an annular air filter element disposed concentrically around the housing. The filter member has a closed top at one end and a retaining band at an opposite band that includes a connection base that is configured to attach with the housing connection flange. An attachment assembly is positioned over the housing connection flange and air filter member connection base to releasibly attach the air filter member to the air filter housing. An O-ring seal is interposed between the air filter housing and member to provide a leak-tight fit therebetween. A sound attenuating chamber is disposed within the assembly to control unwanted intake air noise therein. A vacuum monitor can be attached to the assembly to assessing the remaining service life of the air filter element without need for visually inspection.

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: Filter arrangements for industrial air cleaners include a barrier media, usually pleated, treated with a deposit of fine fiber. The media is particularly advantageous in high temperature (greater than 140° F.) operating environments.

Abstract: A fluid filter assembly includes a shroud containing a filter module. A fluid pump is coupled to the shroud and operated to draw transmission fluid from a fluid reservoir in a transaxle housing into the shroud and through the filter module in the shroud to produce a stream of filtered transmission fluid to be pumped to a transmission or other destination in the transaxle housing. The shroud includes a filter housing containing the filter module and a mount flange cantilevered to the filter housing and adapted to mate with the fluid pump.

Abstract: A filter element assembly includes at least one housing. A filter medium is removably secured to the at least one housing. A securing mechanism is adapted and constructed to removably secure the filter medium to the at least one housing.

Abstract: An annular air filter utilizes an end gasket which is snap fitted to a metal end cap. The gasket has a sealing lip with a radially extending, axially facing sealing face for sealing with a filter housing; and an annular, axially extending body portion. The annular, axially extending body portion has an axially extending, radially facing sealing surface for sealing with an air outlet pipe projecting into the housing. The gasket is made of foam rubber, rubber or polyurethane material and is optionally fixed on the air filter element with adhesive.

Abstract: A filter element comprising a pleated metal fiber fleece is pleated according to pleating lines, providing an edge with pleat openings to be closed to make gas flowing through the metal fiber fleece. The filter element comprising at least two flanks, each of these flanks comprises a thermally and electrically insulating fabric and a stiff material layer. The thermally and electrically insulating fabric is present at one side of the stiff material layer, providing a thermally and electrically insulated side to the flank. The metal fiber fleece is mounted between the thermally and electrically insulated sides of both flanks, which exercise a clamping force on the edges of the metal fiber fleece in a direction essentially parallel to the pleating lines, while the flanks closing said pleat openings.

Abstract: A filter body of an air filter, comprising a cylindrical filter member with an end disk on at least one axial end. This end disk comprises a radially effective seal which is arranged radially in relation to the arrangement on a sealing surface when the filter body is mounted in a filter housing. This end disk also comprises a supporting section which extends, relative to the filter member, in a ring shaped manner on the axially outer side of the end disk. This supporting section is designed to be axially elastic. When the filter body is mounted in a filter housing, this supporting section is supported by a support contour formed on the filter housing and extending parallel to the end disk. In this case, the filter body can be axially positioned in the filter housing.

Abstract: A fluid treatment element is adapted for cross flow filtration which includes a fluid treatment pack having first and second lengthwise ends, a fluid treatment layer that may be pleated, a first mesh layer disposed on a first side of the fluid treatment layer and a second mesh layer disposed on the second side of the treatment layer, the element defining a flow path for a process fluid to be treated passing in a lengthwise direction of the fluid treatment element inside the first mesh layer and a flow path for permeate passing through the second mesh layer. The first mesh layer may open onto the first lengthwise end with the second mesh layer including sealant at the first lengthwise end such that fluid can flow through the first lengthwise end into the first mesh layer but not into the second mesh layer. The element may include a core having a blind region in which fluid cannot pass therethrough and at least one regions where fluid can pass through the core.

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: An arrangement for separating a hydrophobic liquid phase from a gaseous stream includes a coalescer filter, a housing, a gas flow direction arrangement, and a liquid collection arrangement. The coalescer filter includes a non-woven media of fibers. The housing includes an interior having a gas flow inlet and a gas flow outlet. The liquid collection arrangement is positioned within the housing construction and is oriented for receiving liquid collected from the coalescer filter and drained therefrom. Methods for conducting the separations are also provided.

Abstract: A filter has a filter housing and a receptacle chamber in the filter housing into which a filter element is insertable. The filter housing has a housing cover for opening and closing an opening of the receptacle chamber. The housing cover is situated in an area of the filter housing between the oncoming flow side and the outgoing flow side of the filter element.

Abstract: The invention relates to a filter for the separation of contaminants from a gas stream, comprising a) a multi-piece housing with a housing body (20) and a housing head (22), whereby the housing head (22) has an inlet (26) for the gas stream to be purified and an outlet (30) and the housing head (22) furthermore has a first sealing surface (32) and b) a filter element accommodated in the housing, with an element head (36) and a tubular element body (38) which has a central element axis (42) and an element interior (44), whereby the element head (36) has a second sealing surface (48), which co-operates in a detachable manner with the first sealing surface (32) and a curved inlet manifold (50) is formed between the inlet (26) and the element interior (44).

Abstract: A diesel engine exhaust filter utilizes a filter media and a seal. The seal is made from a high temperature stable polymer material to retain the filter media in the filter.

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: A filter element composed of a nonwoven filter web of metal fibers affixed to a support body, in which the metal fibers of the filter web form an unsintered composite having a porosity of at least 90%. Preferably the metal fibers have a diameter of at most 4 &mgr;m.

Abstract: A filter element, especially for separating liquids from a gas stream, with a nonwoven filter web that is made of glass fibers and is arranged on a support body. The nonwoven filter web has a carbon fiber component of 5-30%, especially about 10%. Preferably the glass fibers are oleophobic and the carbon fibers are oleophilic.

Abstract: An air filter includes a tubular outer mesh body, a tubular inner mesh body, a filter layer, a first end cap and a second end cap. The first and second end caps are molded from plastic foam material, have end portions of the inner and outer mesh bodies embedded therein, and fill perforations in the end portions of the inner and outer mesh bodies. The first and second end caps cooperate to position the filter layer between the inner and outer mesh bodies.

Abstract: In a housing for receiving an air filter element 1 with a housing bottom 2 and a housing top 3, the air filter element 1 within the housing can be positioned between the first carrier element 8 which is located on the housing bottom 2, and a second carrier element 9 which is located on the housing top 3, by means of the first carrier element 8 and/or the second carrier element 9 a seal being implemented between the raw air space 5 and the clean air space 6. The housing bottom 2 and the housing top 3 and also the two carrier elements 8, 9 of the housing can have different dimensions to match various types of internal combustion engines.

Abstract: A reverse flow air filter arrangement is provided. The arrangement includes a filter element having first and second-end caps, the second end cap having a central drainage aperture. A funnel shape on an interior surface of second end cap is used to direct moisture flow to the drainage aperture. The arrangement includes a housing in which the filter element is positioned, operatively, during use. Certain features in the housing facilitate moisture withdrawal from the filter element while also inhibiting interference with sealing between the filter element and the housing.

Abstract: A multi port air filter for fuel injected engines provides for the installation of the air filter into the air intake line of an air intake system of a fuel injected engine. The multi port air filter has several filtering elements including an outside filter screen, a foam filter, and inside filter screen, a foam filter mesh, and a mesh filter. The foam filter is made from a flexible reticulated polyurethane foam material that allows proper air flow while maintaining good filtering capability.

Abstract: Filter arrangements include a barrier media in the form of fluted media treated with a deposit of fine fibers. The media is particularly advantageous in high temperature (greater than 140 to 240° F.) systems. Such systems may include engine systems, gas turbine systems, and fuel cell systems. Filter arrangements may take the form of media packs having a circular cross-section or a racetrack shaped cross-section, or media packs formed in a panel configuration.

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 assembly for collecting material that is entrained in a gas stream includes a housing for a filter element. The housing has first and second ends with an inlet and an outlet at the first end for the gas that is to be filtered, and a support surface on its internal wall at a point towards its second end. The assembly includes a tubular filter element arranged within the housing for the gas stream to flow through its wall between the inlet and the outlet. The element is located in the housing by way of a support which extends between the filter element at or towards its end and the support surface on the internal side wall of the housing on which the support rests.

Abstract: A washable air filter for an internal combustion engine which has high durability and can be washed with ease to reuse it is disclosed. The washable air filter includes an outer cylindrical member 10; an inner cylindrical member 11; a first filter element 30 formed from a stainless mesh sheet which is folded in a pleated-form having peaks and valleys arranged alternately and provided between the outer cylindrical member 10 and the inner cylindrical member 11; and a second filter element 33 provided between the outer cylindrical member 10 and the first tilter element 30. Since the washable air filter uses the filter element made from the stainless mesh sheet, it is possible to effectively remove dust particles from air. Further, the washable air filter can be reused because dust particles are removed off the filter element by washing after use.

Abstract: A filter element, a safety element and fluid cleaner assembly. The fluid cleaner assembly generally includes a housing having a cover and a primary fluid cleaner section. The element generally comprises z-filter media, arranged in a straight through configuration, and an axial seal gasket positioned to extend continuously around at outer perimeter of the straight through flow construction. The fluid cleaner assembly can have a precleaner positioned therein. Methods of assembly and use are 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: A filter unit for a motor vehicle which combines an intake air filter for an internal combustion engine and an interior ventilation air filter for a passenger compartment in a single unit. Filter housings for the respective filters may be joined to each other by a releasable connection, such as a combination of attachment hooks and screw fasteners, or they may be formed integrally with each other in one piece.

Abstract: An open flow fluid filter has a pleated main filter element having a plurality of pleats in a closed loop having an outer perimeter defined by a plurality of outer pleat tips, and an inner perimeter defined by a plurality of inner pleat tips. The loop has a hollow interior extending along an axis. Fluid to be filtered flows through the main filter element from an upstream dirty side to a downstream clean side, and flows axially in the hollow interior. The main filter element has an axial flow passage extending along the axis and circumscribing the hollow interior and has a flow perimeter greater than the inner perimeter. A safety filter element downstream of the main filter element filters both the axial flow in the hollow interior and additional flow between the flow perimeter and the inner perimeter. A filter with additional flow is also provided.

Abstract: A filter (10), including an inside-out reverse flow air filter, has an annular filter element (20) with an upper end cap (24) provided by a resiliently compressible trifunctional member having: (a) a wall (50) deflecting debris radially outwardly within the housing away from the central opening (26) of the hollow filter interior (22); (b) an air entrance guide throat (52) directing air to the central opening (26) with reduced restriction; and (c) a sealing surface (54) sealed to the housing and blocking air flow from the inlet (28) to the outlet (34) otherwise bypassing the filter element. In further embodiments, simplified and cost reduced sealing is provided by a configured end cap.

Abstract: An air cleaner for an internal combustion engine facilitates is made compact and maintenance work for cleaning or replacing the cleaner element of the same. An air cleaner case (14) holding a cleaner element (13) is a three-part structure essentially consisting of a body (16) having opposite open ends and provided with an air inlet (40), a bottom wall (15) detachably joined to one of the opposite open ends of the body (16) and connected to the air intake passage of the carburetor (5), and a cover (17) detachably joined to the other open end of the body (16). The bottom wall (15), the body (16) and the cover (17) are fastened together by a stud bolt (25) and a fastening nut (37). The cover (17) has a concave part (44) defining a space for receiving the fastening nut (37) and provided with drain holes (50). When the air cleaner (4) is disposed above the carburetor (5), the drain holes (50) are positioned right above the fuel flow adjusting screws (11) of the carburetor (5).

Abstract: An improved filter element is provided. In preferred form, the filter element includes first and second end caps, with media extending therebetween. The end caps are preferably formed from foamed polyurethane, and preferably there are no outer peripheral standoff indents provided in the end caps. Each end cap preferably includes a standoff ring, spaced from an outer perimeter, positioned therein. Preferred approaches to manufacturing such elements are provided.

Abstract: A filter pack includes a filter construction and a sealing system for sealing the construction within a duct or housing. The filter construction has first and second opposite flow faces and is configured for a straight-through flow. The sealing system includes a frame construction and a compressible seal member. The compressible seal member is molded around a portion of the frame construction. The compressible seal member is sufficiently compressible to form a radial seal between and against the frame construction and a surface of a housing when the filter pack is inserted within the housing.

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: A preferred filter media is provided. The media includes a fine fiber web secured to the surface of a coarse fiber support. A preferred filter media, comprising multiple layers of fine fiber media separated by coarse fiber support, is provided. Advantageous filter constructions result and are provided. Also according to the disclosure, methods for using such arrangements to filter are provided.

Abstract: An air cleaner housing for holding a cylindrical filter element and providing a laminar flow of air to a carburetor of an engine. The housing has a bottom plate with an outer peripheral portion and a venturi section radially inward of the outer peripheral portion. A top cover of the housing has a convex section radially inward of a top peripheral portion. The convex section of the top cover is at least partially positioned over the bottom venturi section of the bottom plate.

Abstract: A filter arrangement includes a media construction including a corrugated sheet secured to a flat sheet rolled into a coiled construction. A frame and a first seal member are provided. The frame secures the first seal member to the coiled construction. The first seal member is preferably oriented to form a radial seal with a housing. A second seal member is secured to the outer annular surface of the coiled construction. The second seal member includes a gasket extension having first and second opposite ends; an attachment portion; and a protrusion extending from the attachment portion. The second seal member is preferably oriented to form an axial seal with a housing. Air cleaners preferably utilizing filter arrangements as described herein operably installed within housings. Methods of installing, filtering, assembling, and servicing preferably include arrangements as described herein.

Abstract: A filter pack includes a filter construction and a sealing system for sealing the construction within a duct or housing. The filter construction has first and second opposite flow faces and is configured for a straight-through flow. The sealing system includes a frame construction and a compressible seal member. The compressible seal member is molded around a portion of the frame construction. The compressible seal member is sufficiently compressible to form a radial seal between and against the frame construction and a surface of a housing when the filter pack is inserted within the housing.

Abstract: A method of making an air filter insert for cleaning the combustion air of an internal combustion engine. The method includes producing the filter insert (21) from a pleated filter medium (33) which is formed into a hollow cylinder, in which at least one end plate (33, 34) made of thermoplastic elastomer or thermoplastic polyurethane is disposed on the axial end faces of the filter medium (33). The at least one end plate (33, 34) is bonded to the cylindrical filter medium (33) by heating the filter medium or the end plate (33, 34) with a high-temperature heating element and fusing the filter medium (33) and the end plate (33, 34) to form a welded joint.