Abstract: A grafted nonwoven substrate is disclosed having average fiber sizes of 0.7 to 15 microns, and a void volume of 50 to 95%, and a polymer comprising anionic monomer units grafted to the surface of the nonwoven substrate. The article may be used as a filter element to purify or separate target materials, such as monoclonal antibodies (MAb), from a fluid mixture.

Abstract: A fluid filter includes a base plate, a canister, and filtering media contained in the canister for filtering fluid from an inlet port to an outlet port. Notches are formed into an outer periphery of the base plate. An annular bead of the canister side wall is partially formed into the notches to provide a torque locking mechanism between the base plate and the canister. The terminating lip portion of the canister is wrapped around the outer face of the base plate and formed into an annular trough to directly secure the base plate to the canister. The annular trough includes a diverging outer wall that provides a narrow contact interface between the terminating lip portion and the retention corner of the base plate to thereby reduce moment loads induced therebetween as a result of high fluid pressures in the filter.

Abstract: A replaceable liquid filter, particularly for the lubricating oil of an internal combustion engine, having a substantially cup-shaped housing with a concentrically disposed outlet opening for the filtered liquid and at least one inlet opening for the liquid to be filtered and a filter element sealingly disposed between the inlet opening and the outlet opening. The housing is connected to a top plate, and the top plate is connected to an end plate. A connector for releasably coupling the replaceable liquid filter to a mating part is disposed concentrically in the region of the cover plate, such that the connector extends axially beyond the contour of the replaceable liquid filter.

Abstract: A fluid filter includes a case in which an inflow path, an outflow path, and a drainage path are formed, a cap which is engaged with the case through axial rotation, a biasing device (a coil spring) which biases a filter element housed inside a casing constituted by the case and the cap toward the case side, a rotation restricting device (an abutting portion and a projecting portion) which restricts rotation of the filter element in a fastening direction when the cap is rotated relative to the case in the fastening direction, and a sealing member provided on an axial end surface side of the filter element, which seals the drainage path when the filter element is biased by the biasing device and rotation thereof is restricted by the rotation restricting device.

Abstract: A filter is provided comprising a filter media element enclosed by an impermeable bag with inlet and outlet ports provided for flow into and out of the bag and through the filter media element contained in the bag. The bag may be constructed of a sheet of plastic material of multiple layers. The filter element may be a stack of filter media disks for depth filtration and adsorption. The filter provides for cleanly change out, with unfiltered fluid being contained in the bag on the upstream side of the filter element within the bag.

Abstract: A filtration sealing system is provided for sealing a filter element in a housing at a mating interface therebetween. The sealing system includes a keyed interface. A replacement filter element is provided for such filtration sealing system, with the replacement filter element including a keyed interface.

Abstract: A flexible water bottle is provided that includes an approach for filtering unfiltered water within the bottle. The bottle includes a filter assembly located within the cap of the bottle such that the filter assembly need not descend into the bottle cavity when the cap is screwed on, thereby not displacing water while screwing on the cap. The filter assembly has an axial flow orientation. An illustrated filter assembly includes paper filters covering the upper and lower ends and can include an activated charcoal filter in between the paper filters. Water is filtered when pressure generated by squeezing the bottle forces water from the bottle cavity through the filter along an axial flow path and out through a spout.

Abstract: A system, that may be portable, for purifying liquid flowing gravitationally from a source/reservoir into a purified liquid receptacle is described. The system includes a housing with a generally horizontal filtering space. More than one liquid inlet disposed at a top portion of the filter is provided as well as one or more liquid outlets disposed at a bottom portion. The liquid flows in a generally lateral direction through the liquid treatment medium. Two or more first walls extending upwardly into the filtering space from a bottom wall thereof and ending with an apex are provided inside the device. One or more second walls downwardly extending into the filtering space from a top wall thereof are also provided. Each of the walls defines a closed path. The first and second walls jointly cause the liquid to flow in a curvilinear flow path from the inlet to the outlet.

Abstract: A filter arrangement for liquids has a filter housing and a functional carrier arranged inside the filter housing. A cylindrical filter element is inserted axially into the filter housing and defines an unfiltered side and a filtered side inside the filter housing. A non-return diaphragm is secured within the filter housing, wherein the non-return diaphragm is arranged on the functional carrier so as to effect an axial and/or radial sealing action of the unfiltered side relative to the filtered side of the filter arrangement.

Abstract: A filter element includes a ring of filtration media circumscribing a central axis, and first and second end caps. The first end cap includes i) an annular body portion defining a central opening around the central axis, sealingly bonded to the first end of the media ring, ii) an annular sealing ring having an annular, peripheral resilient sealing portion; and iii) axial support stanchions around the periphery of the body portion. The stanchions support the sealing ring at a location spaced apart from the body portion, and define radial flow openings between adjacent stanchions. One or more non-radial flow members extend from each stanchion along the outer surface of the annular body portion to direct flow in a spiral or helical manner, where the flow then passes through the flow openings and downwardly along the outer surface of the media in a swirling manner.

Abstract: Fluid treatment arrangements (10) and methods for operating fluid treatment arrangements (10) may include fluid treatment assemblies (11) and manifold assemblies (12) that direct fluids to and/or from the fluid treatment assemblies (11).

Abstract: Filter basket assemblies (108) and filter element assemblies (110) for use in a liquid filtering system (100). Each of the assemblies comprises ring gaskets (202, 204, 402, 404) and a body (or collar). The body (206, 706) has a continuous annular sidewall (208, 708) disposed around a central axis and a flange (210, 710) extending radially outward from the annular sidewall. The flange includes a first face (212, 712) and an opposing second face (214, 714). Each of the faces extends transverse to the annular sidewall. Each of the faces has one of the ring gaskets circumferentially disposed thereon around the central axis. The ring gaskets can have the same or different diameters. The first ring gasket can be positioned coaxial with the second ring gasket.

Abstract: A filtering assembly includes a container and a filtering cap which is connected to a connection end of the container. A flange extends spirally from an outside of the connection end and includes a positioning portion which is the longest section of the flange. The filtering cap includes an inner skirt and an outer skirt, wherein the inner skirt has a groove defined in an inside thereof the flange can be engaged with the groove. The groove has a positioning port which is the deepest portion of the whole groove. A plurality of bosses extend from an inside of the outer skirt. The positioning portion is engaged with the positioning port and the bosses are engaged with the wave-shaped ring when the filtering cap is located onto the container.

Abstract: A ring filter insert (3) which can be flowed through radially has, in at least one of its end disks (4, 5), at least one connecting channel (28) which runs radially between interior and exterior of this end disk (4; 5). With such a ring filter insert (3), through a liquid supply channel (14) which is conducted through the central inner space of the ring filter insert (3) which serves as the crude space or clean space, it is possible in construction and rational terms to pass liquid through the at least one connecting channel (28) in at least one of the two end disks (4, 5) of the ring filter insert (3) from the radial inside outward into one of the two crude spaces or clean spaces which are sealed from the other crude space or clean space and communicate only through the filter medium of the ring filter insert (3). The flow through the at least one connecting channel (28) in at least one of the two end disks (4, 5) may also be in the reverse direction from the radial outside inward.

Abstract: The present invention is directed toward fluid filter assemblies along with methods for making and using the same. The fluid filter assemblies include a ring-shaped seal disposed about a portion of an outer periphery of a filter module. In several embodiments the seal includes an inner surface having at least two parallel contact surfaces separated by a channel, wherein the contact surfaces are in sealing engagement with the outer periphery of the filter module. Additional embodiments are also described.

Abstract: A crossflow filtration system including at least one quick dry change crossflow filtration cartridge designed to rotatably interface with a manifold assembly. The quick dry change crossflow filtration cartridge can comprise a membrane element, for example an ultrafiltration membrane, microfiltration membrane, nanofiltration membrane or reverse osmosis membrane element enclosed within a housing. The quick dry change cartridge includes an inlet stream, a permeate stream and a concentrate stream. The manifold assembly includes three similar flow paths; an inlet stream, a permeate stream and a concentrate stream. When engaged, the cartridge and manifold assembly define continuous inlet flow paths, permeate flow paths and concentrate flow paths that connect across the interface. Thus, all of the connections to the water filtration system can be made onto the manifold, and the resulting connected system is compact and easy to connect.

Abstract: The invention relates to a fluid filter including a filter socket with a mounting flange that can, in a sealing manner, be connected to a companion flange on an associated apparatus, wherein at least one fluid duct for supplying fluid to be filtered and one fluid duct for discharging filtered fluid extends through the flange connection, wherein, in the filter socket, at least one section of at least one fluid duct can be closed off against the companion flange by means of a sealing plate designed with at least one through opening that is sealed against the companion flange and is arranged flush with an apparatus-side fluid duct. Therein, it is provided that the surface area of the sealing plate, as seen on the plane of the flange connection, is smaller than the surface area of the mounting flange and that the sealing plate is inserted in the filter socket in a sealing manner and forms a part of the filter socket.

Abstract: A cover device includes a cover plate having at least one recessed section defining an internal volume. A separating element is inserted in the recessed section and delimits the internal volume. The separating element is configured to permit the internal volume to fluidly communicate through the separating element. At least an edge portion of the cover plate is provided with a sealing element for abutment on an opposing surface of a structure to be sealed by the cover device. The sealing element is disposed at least along an edge of the recessed section and fixedly connects the cover plate with the separating element in a sealed manner.

Abstract: A fluid filter assembly comprises a filter and a case. The case defines a filter chamber receiving the filter. The case comprises a notch extending into the filter chamber and engaging the filter.

Abstract: A fluid filter includes a first filter, a second filter coaxial with the first filter, an inlet adjacent the first and second filters, a first outlet adjacent the inlet, and a second outlet at a distal end from the inlet and the first outlet. Further, the first and second filters may be housed in a unitary canister or a canister that has a canister body coupled to a removable canister cap. First and second springs urge each of the filters into sealing contact with respective gaskets at opposite ends of the device.

Abstract: A filter housing with a socket drain for minimizing waste and downstream contamination of valuable fluids during filter element changes.

Abstract: A filter cartridge comprising a first attachment member (25) and suitable for attachment to a predetermined holder (2) that includes a second attachment member (26) engageable with the first attachment member (25). The cartridge comprises foolproofing means (31) engageable with second foolproofing means (32) connected to the predetermined holder (2) when the cartridge is mounted on the holder. A system for mounting said cartridge on the predetermined holder is also disclosed.

Abstract: A filter element is removably positionable within a filter housing defining a filter chamber for said filter element. The filter housing comprises a standpipe extending within the filter chamber. The filter element includes a tubular filter media circumscribing the standpipe, a first end cap supporting the filter media at one end thereof, a second end cap longitudinally spaced from the first end cap and supporting the filter media at the opposite end thereof, and a center tube extending between the first and second end caps. The center tube has at least one inlet opening therethrough at a first end thereof adjacent to the first end cap and a standpipe opening therethrough at a second end thereof adjacent to the second end cap. The second end cap has at least one intake opening therethrough radially spaced from the standpipe opening in the center tube.

Abstract: A reliable, cost effective system and method are disclosed for exchanging fluid-filtration filters associated with electrical discharge machines (EDMs) and other applications. The basic system comprises a housing to receive the filter, the housing having a top that opens and a bottom cap with an interior inlet fitting coupled to a supply line carrying fluid to be filtered. A pair of opposing swing arms, each having one end pivotally connected to a filter cabinet or other suitable base and another end pivotally connected to an opposing side of the housing, facilitate a first state, wherein the housing and filter are vertically oriented with the bottom opening of the filter sealed against the fitting for filtering operation, and a second state, wherein the housing is pivoted such that the top is oriented downwardly allowing the filter to disengage from the fitting and slide out of the housing.

Abstract: A liquid filter arrangement is provided, as well as methods of assembly and use. The liquid filter arrangement includes an anti-drain back valve assembly therein. Advantageous features, relating to a preferred filter cartridge and preferred anti-drain back valve arrangement, are provided.

Abstract: The invention concerns a filter insert (1) that is provided as an exchangeable insert in an oil filter of an internal combustion engine, as well as a corresponding oil filter. The oil filter comprises a filter housing (3) separable along a separating plane (2) and the exchangeable filter insert (1). Two housing parts (4, 5) of the filter housing (3) are sealed relative one another along the separating plane (2) by means of a seal (6). The seal (6) is captively secured on the filter insert (1).

Abstract: A locking liquid filter assembly is disclosed that prevents an unauthorized user from removing the filter media cartridge after installation. The locking filter assembly includes a head unit for coupling with an inlet conduit for delivering unfiltered process liquid into the filter assembly and an outlet conduit for delivering filtered process liquid from the filter, a head portion that includes a manifold for communicating with the inlet conduit and with the outlet conduit, and a locking assembly coupled to the head portion configured such that when the filter media cartridge is fully engaged with the head portion, the locking assembly engages with the filter media cartridge to prevent filter media removal.

Abstract: The filter device 10 according to the present invention is a device for filtering a polyolefin resin composition containing a polyolefin ingredient, wherein the device comprises a main body 10a having a flow passage 10b, a sintered metal filter 13 having a filtration accuracy of 1 to 100 ?m, a wire netting 14a having a line diameter of 0.01 to 0.25 mm and abutting the sintered metal filter 13 on one side thereof, and a supporting member 15 having a thickness of 10 to 100 mm and having a plurality of openings 15d with an aperture ratio of 30 to 60%; and the sintered metal filter 13, wherein the wire netting 14a and the supporting member 15 are disposed in this order from the upstream to the downstream of the flow passage 10b; and the sintered metal filter 13 is fixed to the main body 10a through the seal member 18.

Abstract: The invention concerns a method for treating a fluid. According to the invention, the fluid is contacted with a substrate at the surface of which there is a network of organic molecules, hereafter referred to as “network molecules”, having a central corre and at least one lateral arm, said molecules being adsorbed at the surface of the substrate. The invention also concerns a two-dimensional molecular sieve consisting of substrate at the surface of which a network of network molecules is adsorbed. The invention further concerns a module for treating a fluid comprising means for circulating the fluid to be treated and containing one or more two-dimensional molecule sieves.

Abstract: A flexible blood filter allowing smooth flow of a liquid and being excellent in separation resistance, pressure resistance and centrifugation resistance. The blood processing filter, includes a first filter element for removing aggregates from blood, a second filter element for removing leukocytes provided in the downstream of the first filter element, and a third filter element having gas permeability of 3 to 40 cc/cm2/sec per thickness of 1 cm provided between the second filter element and the outlet port. The filter contains a seal zone at a peripheral section which contains five layers including a layer of molten material and layers of molten material mixed with filter element material.

Abstract: A filter assembly is described that includes a substantially recyclable filter cartridge inside a pressure vessel. The invented filter cartridge comprises substantially non-pressure bearing walls, except for a pressure-bearing neck or cap with neck that is adapted to withstand high pressures preferably in the range of at least 200 psi, and more preferably at least 475 psi from the inside. The walls of the filter cartridge that are incapable of withstanding significant internal pressure are surrounded on the outside by a pressure vessel. The invented cartridge need not seal to the pressure vessel, because the cartridge neck protrudes outside of the pressure vessel to seal directly to a filter head. The cartridge preferably includes a quick-disassembly mechanism for allowing quick and non-destructive access to the internal components and media of the cartridge.

Abstract: A compact filter element with a large filter surface area having inner and outer rings of filter material with an annular space between them, such that fluid to be filtered can be introduced into the annular space between the rings of filter material and a portion thereof can flow through the outer ring of filter material to the periphery of the filter element and another portion thereof can flow through the inner ring of filter material to the center of the filter element; at least one fluid-permeable support member for the filter material, and at least one end disk on an axial end face of the filter element affixed to the rings of filter material in a sealed manner, in which the end disk has a centrally arranged inlet opening for the fluid to be filtered and one or more radially extending distributor channels leading from the central inlet opening to at least one eccentrically arranged outlet opening which opens into the annular space between the rings of filter material to admit fluid to be filtered to the

Abstract: A housing (1) for the filtration of liquid media, comprising at least one filter candle (2), which has a fluid-tight transition region (10) of a lower annular end cap (6, 6?) with central outlet (7) to a fluid-permeable outer casing (9) and has a tubular adapter (8, 8?) connected to the end cap (6, 6?), and further comprising a housing top part (3) and a housing bottom part (4) having a housing bottom (5), which latter exhibits at least one cylindrical opening (11) for the reception of the adapter (8, 8?) and separates a non-filtrate chamber (14) surrounding the outer casing (9) of the filter candle (2) from a filtrate chamber (16) connected to the central outlet (7), at least a first seal (18) being provided between the cylindrical opening (11) and the filter candle (2), which seal forms a barrier to the filtrate chamber (16), characterized in that the fluid-tight transition region (10) is received in an end cap receiving region (12) of the cylindrical opening (11) and at least terminates with the base surfa

Abstract: Liquid filter arrangements are described and shown. The arrangements generally include a filter head, a seal adaptor, and a filter member comprising a shell enclosing a cartridge. Unique features for interface between the filter cartridge and the filter head are provided. Also provided are unique filter head features and cartridge features.

Abstract: A replaceable cartridge type filter for filtering systems for processing drinking water includes a casing for containing the filtering material which extends externally from an annular edge which defines a sealing surface, which is provided so as to engage in a sealing manner with a corresponding seat for receiving and retaining the cartridge so as to identify an upstream portion and a downstream portion of the cartridge which communicate with each other only by way of the cartridge. At the annular edge the filter comprises a deformable seal, whose deformability under load is substantially greater than the deformability of the edge.

Abstract: A filter unit (3) includes a housing (161), a housing (162), a filter member (164), and a packing (165A). The housings (161) and (162) are joined to each other liquid-tightly. The filter member (164) and the packing (165A) are disposed so as to be sandwiched between the housing (161) and the housing (162). The housing (161) is formed with a projection (167) located outside a portion of the housing (161) which is contacted by the O-ring. The housing (162) is formed with a recess (166) for receiving the projection (167) therein. A sealing material (168) is provided between the projection (167) and the recess (166).

Abstract: A method for manufacturing a filter device having filter means, in particular hollow-fibre membranes, arranged in more than one filtration compartment within a filter housing. For example a dialysis type filtration process such as haemofiltration or haemodiafiltration or haemodialysis may be carried out at the same time as an ultrafiltration process or as another haemofiltration, haemodiafiltration or haemodialysis process. A split shell is bonded or welded together along longitudinal seams. Internal separating walls within the housing are formed integrally with the shell portions of the housing to form adjacent filtration compartments when the housing portions are joined together.

Abstract: Apparatus and method for substantially reducing or eliminating pressure pulsations caused by the opening and closing of fuel injectors. A preferred embodiment provides a restriction orifice adjacent the inlet end of a fuel injector filter of a respective fuel injector.

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 fluid filter constructed and arranged for threaded engagement with a fluid-delivery head for the filtration of an incoming fluid includes a molded plastic shell having a sidewall formed with a retaining ridge, a closed end and an opened end surrounded by a series of external threads, a fluid filter media pack installed into the fluid filter shell, the media pack including filtering media and an upper endplate bonded to the upper end of the filtering media, wherein the upper endplate includes a peripheral lip that is constructed and arranged to snap into position axially beneath the retaining ridge. The threaded engagement between the fluid filter shell and the fluid-delivery head eliminates the need for any nutplate.

Abstract: A locking drain filter for floor drains with drain wells is provided. An upper filter portion has external dimensions that allow the upper filter portion to be inserted into a drain line at the bottom of the drain well. A lower filter portion has first external dimensions that allow the lower filter portion to be inserted into the drain line and second external dimensions that allow the lower filter portion to be inserted into the upper filter portion. A compressible gasket has external dimensions that allow the compressible gasket to be inserted into the drain line when the compressible gasket is in an uncompressed state and internal dimensions that allow the compressible gasket to be placed over the second external dimensions of the lower filter portion.

Abstract: A filter unit includes at least one ceramic filter and at least one mounting that liquid-tightly secures the filter in the mounting in such a way that a filtrate outflow via an interior portion of the filter through the mounting is provided, the filter being secured in the mounting by adhesive bonding with an adhesive.

Abstract: A liquid filter, particularly for the lubricating oil of an internal combustion engine, having at least one replaceable filter and a carrier module, in which the replaceable filter has a housing with an inlet and an outlet for the liquid to be filtered; a housing vessel with an opening pointing essentially downward is provided, and a filter medium is arranged in the housing between the inlet and outlet in a sealed manner. The replaceable filter with the opening pointing downward is attached in a sealed manner to the carrier module, and the carrier module has semiautomatic emptying device for the replaceable filter such that emptying of the replaceable filter is initiated by an external operation which opens a drain passage, and the drain passage is automatically closed again after the emptying process is completed.

Abstract: A filter housing with a socket drain for minimizing waste and downstream contamination of valuable fluids during filter element changes.

Abstract: The present invention discloses an oil filter housing, comprising an upper bowl adapted to be mounted onto a filter-mounting base of an engine, a top end of the upper bowl being formed with oil inlets and an oil outlet, and a protruding structure being provided on an outer top end surface of the upper bowl, the protruding structure adapted to be engaged with the filter-mounting base so as to position the upper bowl and limit rotation of the upper bowl relative to the filter-mounting base; and a lower bowl detachably coupled to the upper bowl and a bottom end of the lower bowl being closed. The oil filter housing according to an embodiment of the present invention is simple in structure, low in cost, easy to operation and safe.

Abstract: A low profile transmission filter system is provided that is connectable between a transmission casing and an oil pan. The filter system includes a filter housing with an open bottom and a flange there around and forming a tubular opening opposite the open bottom. A seal member is secured along the flange and has two ends spaced from one another to define a gap there between. The seal member compresses against an inner surface of the oil pan when the oil pan is connected to the transmission casing to define a filter cavity within the filter housing with an inlet at the gap.

Abstract: An assembly method and related subassembly for a water filter element in the housing of a replaceable filter cartridge provides for filter element insertion into the open bottom end of the housing and subsequent attachment of a retaining ring to the upper end of the element such that the element is secured against vertical drop-out until the bottom end of the cartridge can be enclosed with an end cap. The method and subassembly are particularly well adapted to cartridges in which the lower end cap is attached by spin welding. The enclosing end cap may also be provided with end rings to enhance the user's grip in cartridge installation and removal. The end rings may also be color coded for each of cartridge identification and matching to the filter head.

Abstract: A fluid filter assembly of a filtration system is described. The filter assembly described includes a cover member and a filter cartridge having at least one filter element and a plate member. The plate member includes a seal surface on one side facing the cover member, and a seal surface on another side facing away from the cover member. The seal surface facing the cover member is configured to seal with the cover member, and the seal surface facing away from the cover member configured to seal with another component of the filtration system. The assembly provides a structure that can retain a seal between sealing surfaces of the cover and the filter cartridge, at least while the fluid filter assembly is being serviced, so as to at least minimize fluid dripping and leakage.

Abstract: A filter element (10) suitable for installation in a liquid filter for cleaning a freeze-endangered liquid; the liquid filter having a housing (37), composed of a housing pot (38), a housing cover (39), and a filter element (10) situated in the housing pot (38), with the housing cover (39) screwed onto the housing pot (38) in a sealed manner. The filter element (10) has a first end disk (11); a second end disk (12), and a filter medium (13) interposed between the end disks (11, 12). The end disks (11, 12) are mutually connected by a supporting element (30), which prevents radial relative movements between the end disks (11, 12). In the axial direction, the supporting element (30) has snap hooks (25) which connect the first end disk (11) undetachably to the second end disk (12). As a result of this connection, the second end disk (12) can be reliably removed from the housing pot (38) by pulling on the first end disk (11).

Abstract: A filter assembly for fuel is disclosed. The assembly includes a housing and a filter element located in the housing and held in place by a spring. In the space between the inner wall of the housing and the base of the filter element a compressibly resilient element is located which absorbs hydraulic pulses, the filter assembly is subjected to.