Abstract: A filter assembly configured for acoustic dampening for use with compressor assemblies such as oxygen concentrators including a compartmented housing member having an inlet opening, an outlet opening, a filter member, and a plurality of noise attenuating members positioned and located therewithin. The configuration of the compartmented housing member in conjunction with the positioning and location of the filter member and the noise attenuating members therewithin all contribute to absorb and dissipate any sound waves generated within the housing member due to air flow movement therethrough. This substantially reduces and minimizes noise associated with the present filter assembly.

Abstract: A cartridge filter includes a folded package including filter material and a frame holding the folded package. The frame includes a plurality of profiled strips having identical profiles, and each having two ends. The frame also includes a plurality of corner joints, each disposed at an end of a respective profiled strip. Each corner joint includes an end cap for engaging pair wise with an end cap of an adjacent one of the plurality of corner pieces.

Abstract: A panel filter element has a pleated filter media having peaks and valleys arranged in pleated sets of first and second panels. The pleated sets are adhered along side edges to form clean-side pockets which open adjacent to the valleys. The first and second panels have elongated embossments projecting both into and away from the pockets to keep the pockets open and to keep the pleated sets separate. Dirty air flows into the filter media both transverse to the peaks and laterally between the pleated sets of first and second panels. By having dirty air to be filtered flowing both transversly and laterally, the dirt holding capacity of the filter is increased while increases in restriction are minimized.

Abstract: A foldable filter frame is provided. The filter frame includes a filter media panel and a rectangular support frame surrounding the filter media panel. The support frame included four edge elements. Each edge element has a double-walled construction and is foldable into a position in which a first leg of the respective edge element is generally perpendicular to a second leg of the edge element. An end of at least one of the edge elements that defines a corner of the support frame supports a foldable tab that is receivable in a complementary slot in an end of the other edge element defining the respective corner of the support frame with the tab being arranged in an inner space between the double-walls of the edge element.

Abstract: Filter arrangements for mist removal include a barrier media, usually pleated, and treated with a deposit of fine fibers. Filter arrangements may take the form of tubular, radially sealing elements; tubular, axial sealing elements; forward flow air cleaners; reverse flow air cleaners; and panel filters and can have multiple layers of fine fiber containing pleated media.

Abstract: Self-supporting pleated fluid filter medium and method of making the same wherein the filter medium and accompanying flow-through border frame are of coated thermobondable materials, which are heat bonded together.

Abstract: A deep format filter element has a peripheral frame with outwardly protruding mounting flanges. The mounting flanges simulate the periphery of a shallow format filter element to allow the deep format filter element to replace the shallow format filter element in many situations. The frame design allows the entire frame to be formed of cardboard and still provide adequate rigidity and strength. The frame includes at least a first cardboard sheet forming individual sides of the frame and panels of the mounting flange. The first cardboard sheet includes for each mounting flange at least two inside folds defining edges of the mounting flange's end panel and first and second side panels. An outside fold defines the second side panel of the mounting flange.

Abstract: A method of manufacture includes the steps of laminating together a pleated filter media with an expanded wire forming a laminate; pleating the laminate forming a filter pack with a two pleated edges; forming an inner frame with inner front and back panels, an inner top side with two flaps and an inner bottom side with another two flaps; adhering the pleated first edge to the inner top side; inserting a support wire between the inner frame and the filter media; adhering the flaps together to form box to contain the filter media; forming an outer frame with outer front and back panels, an outer top side with two flaps and an outer bottom side with another two flaps; adhering the flaps together to form a second box to contain the filter media; inserting clips to engage the outer and inner frames forming an expandable air filter.

Abstract: A carbon media filter element with urethane frame and seal has a border member composed of urethane providing a combined structural frame and seal extending along the perimeter and providing both the support frame for the media and a seal along the ends of the media sheet retaining carbon granules between backing layers and preventing escape of carbon granules out of the end. Manufacturing apparatus and methods are provided.

Abstract: A filter cartridge assembly for a vacuum cleaner that includes a main housing having an inlet and an outlet. The filter cartridge fits in a chamber where a motor and bell housing provides a vacuum on the outlet of the filter cartridge thus drawing air from the inlet to the outlet, and at least a first filter is arranged between the inlet and the outlet for filtering the air. The air must pass through one or more filter layers before exiting to the motor and bell housing. The described filter cartridge functions within the body of several vacuum cleaning machines.

Abstract: An apparatus for air filtration has a pleated filter media with an expandable mesh bonded to the pleated filter media, an outer frame, an inner frame, support members disposed within the outer and inner frame wherein the support members create openings in the inner frame and outer frame, and wherein the inner frame slides within the outer frame, and wherein the pleated filter media is disposed within the outer and inner frame and is attached to the outer first side and the inner first side and can grow and expand with the apparatus as the length is adjusted.

Abstract: In a particle filter with carbon (soot) deposit combustion for Diesel engines comprising a filter with filter areas of sinter metal through which exhaust gases from the Diesel engine are conducted to remove the soot therefrom, the soot collected at the raw gas side of the filter surfaces is burned off by radiation heaters which are arranged so as to radiate between wedge-like filter pockets of the particle filter such that selected areas of the filter are heated to initiate combustion of the soot on the filter surfaces.

Abstract: Embodiments of a filter assembly and method of fabricating the same are provided. In one embodiment, a filter assembly includes a filter media pack disposed in a frame assembly. A first seal biases the filter media pack against a second seal along at least one edge of the media pack. In another aspect, a method of fabricating a filter assembly includes the steps of placing a filter media pack in at least a first portion of a frame assembly and compressing an edge of the media pack between a first and second seal.

Abstract: A filter arrangement includes a first filter element having opposite first and second ends; an axial length between the first and second ends; and a plurality of flutes. Each of the flutes has a first end portion adjacent to the first filter element first end, and a second end portion adjacent to the first filter element second end. Selected ones of the flutes are open at the first end potion and closed at the second end portion; and selected ones of the flutes are closed at the first end portion and open at the second end portion. A sleeve member secured to and circumscribing the first filter element. The sleeve member is oriented relative the first filter element to extend at least 30% of the axial length of the first filter element. A seal member pressure flange at least partially circumscribes the sleeve member. The filter arrangement is particularly useful for gas turbine systems. Methods for operating and servicing filter arrangements preferably utilize constructions herein.

Abstract: A filter for removing soot from the exhaust gases from a diesel engine. The filter incorporates two elements. The first element is a flow-through filter element incorporating a porous metal substrate formed by electrodepositing a metal such as nickel in the interstitial spaces of a packed array of electrically nonconductive particles of a material and then removing the material of the particles to produce the porous metal substrate. The second element is a hollow body having an inlet port and an outlet port, the filter element being positioned in and sealed to the hollow body so that diesel exhaust gases directed into the inlet port of the hollow body flow through the porous metal substrate from the inlet side of the porous metal substrate to the outlet side of the porous metal substrate and then out the outlet port of the hollow body. The bulk density of the porous metal substrate is less than 40% of the density of the metal of the substrate.

Abstract: The present invention includes a membrane construction for selectively transferring a constituent to or from a fluid. The membrane construction includes a multi-layer fluid impermeable support sheet having a plurality of supports on at least one side of the support sheet that form a plurality of flow channels. At least one layer of the multi-layer support sheet is a bonding layer. A fluid permeable layer extends over the flow channels and is bonded to the plurality of the supports by the bonding layer.

Abstract: An air filter comprising an elastomeric flange member and a filter member mounted therein. The flange member has opposing ends and sides that define a central opening and protruding members integrally formed with the flange member and extending therefrom. The protruding members have opposed inwardly facing faces. The filter member has filter ends and sides and the filter sides are attached to the opposed faces in an insert molding process or via bonding of the filter sides to the respective faces.

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 includes 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 arrangement includes a first filter element having opposite first and second ends; an axial length between the first and second ends; and a plurality of flutes. Each of the flutes has a first end portion adjacent to the first filter element first end, and a second end portion adjacent to the first filter element second end. Selected ones of the flutes are open at the first end potion and closed at the second end portion; and selected ones of the flutes are closed at the first end portion and open at the second end portion. A sleeve member secured to and circumscribing the first filter element. The sleeve member is oriented relative the first filter element to extend at least 30% of the axial length of the first filter element. A seal member pressure flange at least partially circumscribes the sleeve member. The filter arrangement is particularly useful for gas turbine systems. Methods for operating and servicing filter arrangements preferably utilize constructions herein.

Abstract: The invention relates to an intake arrangement (1) for the combustion air (2) of an internal combustion engine (3) in a handheld work apparatus (4) such as a cutoff machine, a motor-driven chain saw or the like. An air filter (5) is provided for the cleaning of the combustion air (2) drawn in via an opening (6) of a filter housing (7). To discharge dust (11) accumulated in the air filter (5) a carrier airflow (10) is provided in a flow channel (16) and the filter housing (7) is fluidly connected with the aid of a discharge tube (13) to the flow channel (16). For a dosed metering of dust (11) from the filter housing (7), a shutoff member (14) is provided and the shutoff member (14) clears or closes the fluid connection between the flow channel (16) and the filter housing (7).

Abstract: A filter frame including a panel having a plurality of V-shaped elements disposed on the first side thereof. Each V-shaped element includes a pair of slots each configured to receive and orient a filter element. A portion of the panel disposed between adjacent pairs of V-shaped elements has an opening form therein to define a handle for carrying the filter frame.

Abstract: A continuous strip of framing material suitable for use in making filter products that can be provided of indefinite length and which is storable as a flat product capable of being wound into roll form. Moreover, the continuous strip of framing material includes features to create a three-dimensional frame structure for wrapping about filtration media in a manner to provide a strong and effective filter product assembly.

Abstract: A filter element comprises an oil-impregnated filtering member, and a transmission preventing layer formed on a downstream side of the filtering member, for restricting transmission of at least the carbon dusts from the oil-impregnated filtering member. The filtering member may be formed like a ridge-like-folded structure. The transmission preventing layer may be formed of a coating layer having a resistance against a viscous oil that is impregnated in the filtering member. This coating layer may be formed uniformly as a whole or the thickness or the content of the coating layer may be increased partially. A ventilation shutting-off member (filling layer) may be formed as the transmission preventing layer in the root portion areas of the ridge portions. The transmission preventing layer may comprise a resistant component that is insoluble in the oil that is impregnated in the filtering member.

Abstract: A filter element of an air filter includes a main body and a substrate. The far infrared emission powder substances are embedded at certain grain sized and at certain ratio to the substrate, thereby forming the main body that is adapted in form to various internal combustion engines. The resonance effect will be created by means of the far infrared emission substances in the filter element of the air filter, thereby making tiny the molecular cluster of water in the moisture-containing air entering into the internal combustion engine for combustion, increasing the molecular freedom, enlarging the contact surface of the oil gas with the air. Therefore, it's easier that the oxygen-containing particles and the oil gas are evenly mixed for reaching an optimal mixture ratio of the original design standard.

Abstract: A curved side oil or fluid separator element for separating liquid or oil from a gas flow has a body portion made of filter media with opposing upper and lower ends. A curved side extends between the upper and lower ends and rotates 360° about a central axis of the body portion to form a curved surface of the body portion. The curved side of the body portion can be any one of a hyperbolically curved side, a circular arc curved side, an elliptically curved side, or any other curve except a straight line, and any combinations of these curves. In one aspect, the curved side of the body portion is adapted for in-out gas flow allowing the gas flow to exit through the curved side to a communicating outlet of a separator housing. In another aspect, the curved side of the body portion is adapted for out-in gas flow for receiving the gas flow through the curved side from a communicating inlet of the separator housing.

Abstract: A filter medium formed from a web of ceramic fibers, pleated and integrated into a coherent unit employing a ceramic sol. A method is disclosed.

Abstract: A method of assembling a fluid filter begins with a step of aligning housing shells to form a housing. A seam is defined in an area where the housing shells contact one another. The housing shells surround and enclose a porous filter element, having an edge portion that is substantially parallel to an adjacent side wall of the housing. The next step involves heating the first and second housing shells in the area of the seam, such that the first and second end caps are fused together. Another step of the method involves moving molten plastic, from the seam area of the housing, inwardly to contact the filter element, such that the filter element becomes fixed in position in the housing. Preferably, the molten plastic is arranged to form a circumferential seal around the filter element. A filter made according to the method is also described.

Abstract: A deep format filter element has a peripheral frame with outwardly protruding mounting flanges. The mounting flanges simulate the periphery of a shallow format filter element to allow the deep format filter element to replace the shallow format filter element in many situations. The frame design allows the entire frame to be formed of cardboard and still provide adequate rigidity and strength. The frame includes first and second cardboard sheets forming individual sides of the frame and panels of the mounting flange. The first cardboard sheet includes for each mounting flange at least three folds defining edges of the mounting flange's first end panel and first and second side panels. The second cardboard sheet forms the second end panel of the mounting flange.

Abstract: The present invention concerns an air filter unit for a vehicle with an internal-combustion engine. Air filter unit for a vehicle with an internal-combustion engine, having an air filter and a hollow case containing and holding the air filter in position, characterized in that said case is composed, as the one hand, of a lower part forming an open receptacle for said filter and made up of at least two elementary parts assembled at complementary formations of their edges placed in contact and, on the other hand, of an upper part forming a cover and closing the upper part of the lower part, said upper and lower parts being assembled, with insertion of a seal or a packing, at the lower peripheral edge of said upper part and at the peripheral edge of the opening of the lower part.

Abstract: A filter assembly includes a reusable filter frame and a collapsible and expandable filter element. The filter frame includes a base and a cover connected with the base. The base includes a plurality of longitudinal rails and a plurality of transverse ribs for supporting and spacing the filter element. The filter frame also includes a securing mechanism for securing the filter element to the frame and maintaining the filter element in its expanded condition. The filter element includes filter media having a plurality of pleats adapted to mesh with the ribs of the filter frame and a flexible spacing structure attached to the pleated media that provides the pleated media with uniform pleat spacing but allows the media to be collapsed to a compact form.

Abstract: A filter assembly with a frame and a filter element including a sheet of filter media with attachment strips at opposite ends. The frame positions the filter element with the filter media across a passageway in the frame and with the attachment strips along opposite end parts of a perimeter portion of the frame. Abutments extend along the perimeter portion between its end parts and along opposite edges of the filter material. Projections on the end parts are engaged in openings in the attachment strips and are spaced from the abutments such that the filter element can be mounted on the frame with either of the attachment strips engaged with the projections at either of the end parts while the filter element can only be mounted on the frame with an inlet surface of the sheet of filter material facing the same direction as a front surface of the frame.

Abstract: A dual-stage vacuum cleaner filter with a pre-filtration cap having pre-filtering screens. A base with an aperture and a filter media strip pleated in the shape of a frustocone can be mounted within the dirt cup of a handheld vacuum. A circular, planar gas impermeable lid is sealingly fixed at the end of the filter media strip opposite the base. The cap is removably mounted to the base covering the filter media strip and lid. The cap has sidewall and endwall pre-filtering screens, and when the sidewall screens become loaded with debris, the endwall screen permits air to flow through a gap between the cap and the lid to the filter media strip.

Abstract: A filter assembly and method includes a filter media attached to a perimeter frame using a polyimide material.

Abstract: A panel filter element has a pleated filter media having peaks and valleys arranged in pleated sets of first and second panels. The pleated sets are adhered along side edges to form clean-side pockets which open adjacent to the valleys. The first and second panels have elongated embossments projecting both into and away from the pockets to keep the pockets open and to keep the pleated sets separate. Dirty air flows into the filter media both transverse to the peaks and laterally between the pleated sets of first and second panels. By having dirty air to be filtered flowing both transversly and laterally, the dirt holding capacity of the filter is increased while increases in restriction are minimized.

Abstract: A filter element is made of a first filtering member, and a second filtering member that is arranged on a downstream side of the first filtering member and is impregnated with an oil. The first filtering member consists of a downstream wet layer that is impregnated with the oil, which is transferred by contact to the second filtering member, and an upstream dry layer that is not impregnated with the oil. A density of the first filtering member may be set smaller than that of the second filtering member.

Abstract: An expandable media filter structure is composed largely of biodegradable materials and is environmentally disposable. A plurality of pleated panels are interconnected at their edges so as to be collapsible for storage and shipping purposes but expandable for installation and use. A plurality of ribbons are ultrasonically welded to each of the panels edges, with the ribbon portions between edges being of substantially equal lengths, thereby maintaining equal spacing between the panel edges when the filter is in the expanded condition but allowing an each collapsing of the filter for storage. Forming a part of the nondisposable framework for support of the disposable filter are a pair of end plates which are C-shaped in cross section for slidably receiving an end panel of the media filter therein. The depth of the C-shaped channel is sufficient to allow a plurality of the unexpended pleats to be stored therein so that a single sized filter may be used for various sizes of cabinet openings.

Abstract: Filtration method and device for filtering solid contaminants from a stream of a flowing fluid such as internal combustion engine intake air. An imperforate housing has a tubular inlet exiting at its downstream end into a conically divergent first wall section terminating in a maximum diameter apex. A convergent second wall section terminates at a housing outlet opening of greater diameter than that of the housing inlet. A perforate filter element disposed within the housing conical portions has an exterior configuration generally complimental to the housing interior, and thus has a first generally conical divergent section, and a second generally conical downstream section convergent from a maximum diameter apex of the filter element and defining the filter device outlet. The housing and filter element define therebetween first and second frustoconical annular fluid flow chambers of successively diminishing cross-sectional radial thickness in the direction of downstream fluid flow.

Abstract: An air cleaner comprises a filter element, for filtrating air, including a frame structure, a case provided with an opening through which the filter element is inserted into the case and having an abutment surface to which the seal portion of the filter element contacts, and a holder provided with a lid portion closing the opening of the case when fitted to the case. The filter element is first inserted into the case and the holder is thereafter fitted into the case so as to contact the seal portion of the filter element to the abutment surface of the case.

Abstract: Seals for filter elements having filter packs with seals around the periphery thereof adjacent to one of the faces are produced by injection molding the seal onto the filter pack using an ethylene-propyleneterpolymer (EPDM) thermoplastic material. Preferably, the thermoplastic material is embedded in polypropylene particles. The resulting seal has a contact portion which bends and/or compresses upon being engaged by a lid of a filter housing as the lid closes.

Abstract: A collapsible expandable air filter assembly includes an expandable pleated filter media, a filter frame made from a cardboard blank that is pre-scored, slit, creased and die cut to define a central area enabling air passage therethrough, and side and end panels foldable to positions generally normal to the central area to form a perimeter wall about the central area to receive and support the expanded air filter media. A filter grill is formed from a cardboard blank and has an open central area and laterally opposite marginal side and end walls foldable to enable mounting on the filter frame to assist in retaining the filter media within the filter frame. Separating fingers are formed integral with or separate from but connectable to the filter grill and are adopted to be positioned between adjacent expandable pleats to evenly position and secure the filter pleats.

Abstract: An air cleaner arrangement or assembly is provided. The air cleaner arrangement includes a serviceable filter cartridge. The air cleaner assembly also includes an arrangement for positioning the filter cartridge into a preferred, sealing, orientation and for securing the filter cartridge in that location. Preferred serviceable filter cartridges are provided, as well as methods of assembly and use.

Abstract: A filter assembly including a frame having a through passageway between front and rear surfaces surrounded by a perimeter portion; and a filter element including a sheet of flexible filter media with longitudinal attachment strips at opposite ends and extending at about a right angle to opposite edges of the sheet. Structure on the frame receives and positions the filter element with the sheet of filter media extending across the passageway with an inlet surface of the sheet facing the same direction as the front surface of the frame and with the attachment strips of the filter element extending along opposite end parts of the perimeter portion.

Abstract: The present invention involves an air filter that includes a filter medium having an inlet surface and an outlet surface, and a retaining screen made of a thermoplastic polymer that defines a plurality of apertures and is adjacent to and in communication with the outlet surface. A mold gasket maintains the retaining screen in fluid communication with the outlet surface. In another embodiment of air filter of the present invention, the air filter includes first and second end caps and the filter medium substantially extends between the first and second end caps. In this embodiment, the air filter includes at least one of an inner and an outer retaining screen, or both. The inner retaining screen defines a plurality of apertures and is adjacent to and in communication with the outlet surface, and the outer retaining screen defines a plurality of apertures and is adjacent to and in communication with the inlet surface.

Abstract: A panel filter element having pleated filter paper media and precut gasket made of polyester felt is mounted in a tray inserted into the air intake housing of an internal combustion engine, wherein the air intake housing is made of NYLON® material. By having a peripheral gasket made of polyester felt, the gasket does not adhere to portions of the housing and tray. This allows the panel filter element to be easily removed from the housing. This is an improvement over polyurethane gaskets which adhere to the NYLON® of the housing when NYLON® and polyurethane are exposed to engine heat.

Abstract: Self-supporting pleated fluid filter medium and method of making the same wherein the filter medium and accompanying flow-through border frame are of coated thermobondable materials, which are heat bonded together.

Abstract: An air filter and corresponding filter element for use in an internal combustion engine are disclosed. The filter element has a seal bead made of an elastomeric material that forms the frame of the filter element. A pleat block, made of a filter media, is molded into the seal bead in a first area of the filter element and a baffle is located in a second area of the filter element to protect the pleat block from wetting. A channel is formed in one side of the seal bead which allows the filter element to be retained during assembly without the use of fasteners and a surface is formed opposite the seal bead that in conjunction with the channel seals the filter element within the air filter when the air filter is fully assembled. The air filter has an intake silencing chamber that is located to receive outside air before it is provided to the pleat block and a sealed flow path is created from the intake silencing chamber to the pleat block by a third area of the filter element.

Abstract: A high efficiency fluid filter arrangement wherein a combined layer of scrim and filter media applications is of empirically relatively estimated weight size and depth with intermediate pleat spacing so as to arrive at a combined filtration capability value in keeping with selected approved test standards.

Abstract: A filter system, including a folded filter (1) and a cover (2) of a filter housing (3), the folded filter (1) and the cover (2) forming a preassemblable unit (4) and being essentially sealingly joined to each other so as to be detachable without destruction.

Abstract: A seal member is attached to a peripheral edge portion of a filter body by being fused to semi-melted fibers that form the filter body when the semi-melted fibers are layered over a forming surface. Therefore, the formation of the filter body and the attachment of the seal member can be simultaneously accomplished.

Abstract: A filter product includes a filtration media combined with a multi-component frame assembly that can effectively support the filtration media in place proximal to its edges and in accordance with its desired orientation and wherein the assembly can be selectively taken apart to provide access to the filtration media by way of a releasable lock connection. Preferably, a snap-fit releasable locking system is incorporated within the frame design. The present invention is particularly applicable to filtration media comprising pleated filtration media. Such support features include rack-like media engagement elements, which elements are advantageously provided so as to preferably engage the filtration media proximal to its side and end edges from above and below to preferably compress and ensure an effective seal and support connection between the frame and the filtration media.