Abstract: A fluid path control element which when stacked alternatively with a fluid porous sheet can be formed into a filtration module. The fluid path control element comprises a porous membrane having sealed to a portion of its periphery a thermoplastic element that extends into an opening either through the membrane or in an opening through the thermoplastic element. The portion of the thermoplastic element that extends into the opening can be heat sealed with a second thermoplastic element to prevent fluid flow between the opening and the membrane.

Abstract: In a filtration device (1) comprising a pressure-resistant housing (2) with a liquid inlet opening (3) and an outlet opening (4) for filtered matter, into which a collecting channel (12) terminates, at least one filter element (8–11) designed as flat membrane is connected to the collecting channel (12) in a pressure-tight manner. This device provides a high liquid throughput at the same time having a compact construction.

Abstract: A combination depth and phase separation membrane filter to remove entrained liquids and immiscible liquids from hydrocarbon liquids, protecting industrial analyzers from liquid and solid contamination, etc. The preferred embodiment of the present invention contemplates a combined phase separation membrane filter and horizontally mounted depth filter in a horizontally mounted head and bowl configuration. The system is configured specifically for horizontal mounting, specifically filter configuration and layout, with all fitting connections in the head for ease of service and compactness.

Abstract: According to the present invention, there is provided a wastewater processing apparatus and method comprising a rotating filter thickener (20) receiving and filtering a wastewater mixture and producing a first filtrate output and a first sludge output, a screw press thickener (24) receiving the first sludge output and forming a final sludge output and a second filtrate output, a dissolved air flotator (46) receiving the first filtrate output from the rotating filter thickener (20) and producing a first solid output and a third filtrate output, a first conductor (10, 12, 29) for mixing incoming raw manure wastewater and the second filtrate output from the screw press thickener (24) to produce the wastewater mixture for input to the rotating filter thickener (20), and a second conductor (34) for branching off a part of the first filtrate output to a spray cleaner (38) for spraying the part of the first filtrate output onto the filtration disks (70) for their cleaning.

Abstract: An improved filter support structure for supporting filter media. The support structure includes two sections removably coupled together with an improved coupling assembly. The first section has a cross section presenting a first width spaced apart from a second width, the second width being less than the first width. The coupling assembly includes an element carried by the second section, and presents an engagement width that is greater than the second width and less than or equal to the first width such that the element may be shiftably received within the first section at the first width, and can be removably engaged at the second width.

Abstract: A barrier filter useful for aseptically discharging both gaseous and liquid fluids from a chemical process system is disclosed The barrier filter comprises, within a common enclosure, one or several filter membranes having singularly or collectively a mixture or hydrophobic and hydrophilic regions. The common enclosure of the barrier filter is provided with a fluid inlet and a fluid outlet. All filter membranes are located within the fluid path between the fluid inlet and the fluid outlet. A variety of membrane-based systems, into which such barrier filter is installed, are also disclosed.

Abstract: The present invention relates to stationary cloth media filtration systems and devices, as well as processes and devices for uniform flow distribution and improved cloth media filter backwashing.

Abstract: A multistage immersion type membrane separator in which an air diffuser is disposed under a filtration part immersed in a treatment tank, characterized in that: the filtration part has plural plate-like membrane cartridges arranged in a vertically parallel multistage fashion at spaced intervals for forming a crossflow passage of a predetermined width; and that the air diffuser has a diffuser tube disposed sidewardly that is communicated at its basal end to an air supply source and has at its lower side part plural blowholes, a flushing pipe that is communicated at its basal end to the tip of the diffuser tube and has at its tip an opening serving as an outlet above the diffuser tube, and a flushing valve disposed in the flushing pipe.

Abstract: The invention relates to a filter module (4) with a simplified design which allows for the manufacturing of a step filter, Each ply of filter medium is composed of a deep-bed filter material layer (1, 1a-d) and the packing is composed of draining layers (5, 5a, 5b). The draining layers (5, 5a, 5b) and filter layers (5, 5a, 5b) are mutually sealed to the filtrate/non-filtrate chamber (2,3). The filter layers (1, 1a-d) can be arranged according to any pattern.

Abstract: A gravity-flow Biomass Concentrator Reactor (BCR) is provided which uses a porous barrier having pore sizes averaging from about 1 to about 50 microns through which treated water permeates under the pressure of gravity. Solids suspended in water treated with the BCR are effectively retained and concentrated.

Abstract: A submerged membrane bioreactor includes a tank containing a mixed liquor having microorganism; and a filtration module immersed in the mixed liquor and having a permeate side in fluid communication with the mixed liquor only through the filtration module. The filtration module includes a porous support having a first surface forming the permeate side and a second surface opposing to the first surface; and a non-woven fabric membrane covering the second surface and having a thickness of 0.1-2 mm and a pore size of 0.2-100 &mgr;m.

Abstract: A screening or filtration device for multi-phase mixtures, particularly liquids containing fibers, includes a casing with at least one feed pipe, at least one filtrate discharge pipe, at least one retentate discharge pipe, and at least one filter or screen through which the filtrate flows. The filter or screen being formed at least by an essentially rigid top surface of an at least essentially circular filter disc with hollow interior that can be rotated round an essentially central axis, where the interior of the disc is connected to the filtrate discharge pipe. The device also comprising at least one structural element adjacent to the filter or screen, where guiding and drive facilities are also provided that cause this structural element and the filter disc to describe movement relative to one another parallel to the level of the filter disc.

Abstract: Reinforcement structure for use with multi-cell filter cartridges comprising an elongated backbone having a first and second hook boss each at a respective end of the elongated backbone and one or more intermediate hook bosses positioned intermediate the end bosses along the elongated backbone. In addition a plurality of non hook bosses are spaced along the elongated backbone. The filter cartridge provided with a plurality of the described reinforcement structures equally spaced around the circumference of the filter cartridge is also disclosed as is a method for preventing distortion of a multi-cell filter cartridge under arduous operating conditions.

Abstract: An improved filter support structure for supporting filter media. The support structure includes two sections removably coupled together with an improved coupling assembly. The first section has a cross section presenting a first width spaced apart from a second width, the second width being less than the first width. The coupling assembly includes an element carried by the second section, and presents an engagement width that is greater than the second width and less than or equal to the first width such that the element may be shiftably received within the first section at the first width, and can be removably engaged at the second width.

Abstract: A method of manufacturing a mechanical basket (P) of substantially cylindrical shape for centripetal or centrifugal flow relative to an axis (R) and having rings (A) lying in planes perpendicular to the axis of revolution and wires (F) rigidly connected to the rings at regular intervals for the purpose of sieving a material is characterized in that assembling a wire (F) to a ring (A) is accomplished by a first operation of putting the wire (F) into position in a corresponding notch (EN) in the ring, and a second operation in which the wire is welded to the ring by melting a shoulder (EP1) of the ring, without adding any filler metal. In the method, a mechanical basket is made that presents better mechanical characteristics so that its lifetime is increased, and its cost of manufacture is reduced compared with conventional mechanical baskets.

Abstract: The invention concerns a modular dynamic filtering device with rotary discs comprising membranes (41, 42, 51, 52) arranged on either side of fixed support plates (4, 5). The modular construction enables the filtering device to be universal and adaptable by the user to be used for different types of filtration from microfiltration to nanofiltration, and even reverse osmosis.

Abstract: The invention relates to a filter module comprising a number A of circular filter cell (1), a number A−1 of spacer rings (3), and two end rings (4), whereby the filter cells (1) and the rings (3, 4) are combined to form a stack while forming a central continuous channel (2) using tension elements (5) which are interspaced in the circumferential direction of the channel wall and which, on the inner side, engage on the end rings (4) in order to transmit axial tension forces. According to the invention, tensioning elements comprised of strips (5) with hook-shaped ends (6, 13, 14) are provided for securely combining the filter cell that are arranged in a stack. Said hook-shaped ends can be fixed in the end rings by effecting an essentially radial hooking-in or engaging movement, In addition, means (10, 11) are provided which prevent an unintentional radial hook-removal or disengaging movement of the hook-shaped ends (6, 13, 14).

Abstract: Treatment apparatus comprising a chamber (11) for treatment of a process fluid and having at least two regions in each of which the process fluid is caused to follow a circulating path, in which the location of openings (13, 14) for introduction and removal of process fluid to and from the chamber and the shape of means defining the paths followed by the components of the process fluid through the chamber is such that the circulating paths followed by the process fluid in the two regions have oppositely directed radial components and the two regions communicate with one another such that process fluid introduced into one region is constrained to flow into the other region before leaving the vessel, at least part of the chamber wall (12′) being formed as a semi-permeable membrane.

Abstract: The invention relates to a filtration device for deep-bed filtration which is easier to handle and enables filter modules(s) to be changed and disposed of easily. The filtration device has a casing with at least one filter module inserted in the casing with filter elements made from deep-bed filter materials stacked on top of each other. The filter elements have at least one internal structure formed by a perforation wherein the boundary surface of the perforation formed by the deep-bed filter materials creates a through-flow surface for filtrates or non-filtrates. At least one end plate has at least one inlet and/or outlet.

Abstract: An improved filter support structure for supporting filter media. The support structure includes two sections removably coupled together with an improved coupling assembly. The first section has a cross section presenting a first width spaced apart from a second width, the second width being less than the first width. The coupling assembly includes an element carried by the second section, and presents an engagement width that is greater than the second width and less than or equal to the first width such that the element may be shiftably received within the first section at the first width, and can be removably engaged at the second width.

Abstract: The invention relates to a filter module (1) comprising filters layers (4a, b) made of a filter medium, especially comprising filter layers made of filter strata. Said filter layers alternate with layers made of draining spacer elements 910, 10a, b, 20), the first and last layer of the filter module (1) consisting respectively of a draining spacer element (10a, b, 20). The draining spacer elements respectively and mutually comprise flow elements (12a, b) and sealing elements (11a, b) for the filtrate chamber and the non-filtrate chamber (40, 41). Means are provided for the mutual connection thereof The aim of the filter module (1) is to combine the advantages of known filter modules with improved sealing at the edges of the filter layers, and to make the filter module backwashable. The filter module (1) comprises draining spacer elements (10, 10a, b, 20) which are embodied in such a way that they enable the filter layers to be pressed in a sealing manner.

Abstract: A combined hot gas cleanup system and gas separation unit is contained within a single pressure vessel. Preferably, the combined unit is an integral structure that is retrofittable to replace existing candle filters in their installed holders. The integral unit can be replaced to adapt the combined system for different applications.

Abstract: A filtration device having a plurality of membrane modules is provided. Each of the plurality of membrane modules has first and second permeable sheets that are separated by a spacer, a first ring disposed around a perimeter of a first hole in the first permeable sheet, and a second ring disposed around a perimeter of a second hole in the second permeable sheet, the second hole in alignment with the first hole. The first ring of each of the plurality of membrane modules is in abutment with the second ring of a preceding one of each of the plurality of membrane modules so that the plurality of membrane modules are interconnected for communication therebetween. Some embodiments further provide a third sheet that disposed between successively adjacent membrane modules.

Abstract: A process of oxidizing an ash and sulfur containing fuel such as coal in order to power gas turbines using a material such as the oxides of iron which in an oxidized state can be readily reduced and which in a reduced state is readily oxidized. Preferably, the oxides of iron are circulated between two fluid bed reactors and reduced by the ash and sulfur containing fuel in the first said fluid bed reactor and oxidized by air in the second said fluid bed reactor, with ash and SO2 in the gases leaving chiefly from the first said fluid bed reactor. The temperature is controlled within the second said fluid bed reactor by use of a clean fuel and the rate of addition of the ash and sulfur containing fuel to the second fluid bed is controlled so as to limit the amount of SO2 in the gases leaving the second said fluid bed.

Abstract: A maintaining device for a filter medium having a stack of filtration disks presenting a central aperture, characterized in that it comprises a first flange with at least one central opening, a second flange and at least one perforated first central element intended to operate together with said central aperture of said stack of filtration disks, said first central element being integral at one its extremities with said second flange and being provided at its other extremity with ratchets intended to operate together with said central opening of said first flange.

Abstract: A filter element to be installed into a housing to constitute a filter assembly for separation of solids in a fluid is constructed from one or more baggy filtering mediums made of porous membrane or non-woven fabric of synthetic plastic, passageway material arranged along the inside and/or outside surface of the baggy filtering mediums depending on necessity and a sleeve joining with each opening of the baggy filtering medium(s). By adopting the baggy filtering mediums, it is possible to superimpose them into a filter element in a state of layers, and by adopting one baggy filtering medium folded repeatedly back and forth upon itself, it is also possible to construct another filter element in a state of layers, so as to fit to various filtration spaces in the housing. Accordingly, the space occupied by substantially parallel layered filtering medium(s) can be used densely for filtration, as the result a filtration area per unit filtration space is very large.

Abstract: A laminated modular water filter includes a top plate, a bottom plate and a plurality of superposed intermediate plates disposed between the top and bottom plates. Each adjacent pair of the top, intermediate and bottom plates are interconnected removably, and define an accommodating space therebetween, within which a filter unit is received fittingly. Each of the top and bottom plates has a central hole which is in fluid communication with central holes in the intermediate plates, and two side openings which are in fluid communication with a plurality of annular outer passages units in the intermediate plates that are in fluid communication with the accommodating spaces. Each of the filter units includes two filter films interconnected fixedly along outer peripheries thereof, and a filter net disposed between the films so as to define an annular filtered-water passage between the films that is fluid communication with the central holes.

Abstract: A filter for removing undesired materials from a fluid, such as used cooking oil, for example, includes a filter envelope including first and second panels. The first panel has a permeability which is greater than that of the second panel. The first panel of the filter envelope may be formed from a filter pad and the second panel from a filter paper, and may enclose a metal spacer grid. When the filter is connected to a pump for drawing the oil through the filter, the flow of the oil is directed selectively through the filter pad, whereby undesired materials are removed from the oil. The filter provides for efficient flow of the oil to be filtered while removing undesired materials therefrom.

Abstract: A precoat renewal system for a filter, such as a disc filter. The renewal system includes a plurality of nozzles coupled to spray piping and valving with each nozzle being positioned for spraying an area of one side of a disc. The nozzles and at least a portion of the spray piping is movable such that the nozzles may be displaced relative to the discs. The nozzles and piping are arranged in groups or zones with each zone covering a specified percentage of the discs in the filter and each zone representing about 40% or less of the surface area of the filter media of the discs in the filter. Each zone is configured such that high pressure fluid may be supplied to that particular zone for removal of a precoat layer on the disc. The system may be configured so that other zones may be concurrently washed with a lower pressure fluid. The zones may be sequentially or otherwise segmentally provided with high pressure fluid until the precoat layers of each respective zone have been removed and renewed.

Abstract: Provided are a filtration apparatus for a polycarbonate comprising a filtration container, a flange plate, one or more leaf disc-type filters, a filter press and a center pole having an integral construction with the filter press as constituting elements, these components having specific structures, and a process for manufacturing a polycarbonate using the filtration apparatus. Foreign materials are effectively removed by using the polymer filter, and at the same time, discoloring, crosslinking and gel formation, which would occur in the filter, are suppressed; and as a result, a polycarbonate having excellent quality can be manufactured.

Abstract: A split leaf filter includes a filter shell having disposed therein a sluice manifold, at least one outlet manifold, a vibrator bar, and an array of parallel spaced split leaf assemblies. Each split leaf assembly has at least two split leaf elements arranged in coplanar adjacent relationship (twin split leaf design), and in some designs there may be three or more coplanar split leaf elements per split leaf assembly (multiple split leaf design). Each split leaf element has a first edge section connected to one of the outlet manifolds, and a second edge section that is generally parallel to the first edge section and connected to the vibrator bar. Each split leaf element also has third and fourth edge sections that are generally perpendicular to the first and second edge sections. In twin split leaf designs, the third edge section is longitudinally interconnected with corresponding edge sections of split leaf elements in a set or section of adjacent split leaf assemblies.

Abstract: A device for removing or replacing solvent in a liquid sample containing macromolecules includes a concentration chamber having an aperture adjacent to the upper end of the concentration chamber which is arranged to receive and tightly fix the outlet of a detachable auxiliary reservoir. In methods employing the device, the concentration chamber is filled with part of a liquid sample to a predetermined level, and a detachable auxiliary upper reservoir containing the rest of the liquid sample is tightly fixed to the aperture adjacent to the upper end of the concentration chamber to successively deliver additional liquid sample as the concentration is progressing, or a detachable auxiliary upper reservoir containing a solvent or buffer solution is tightly fixed to the aperture adjacent to the upper end of the concentration chamber to successively deliver solvent or buffer solution as a replacement for the liquid absorbed by an absorption material.

Abstract: Improved liquid filter apparatus of the filter-sock type is disclosed. The filter sock is a non-perforated non-woven filter material of flash-spun plexifilamentary polyolefin (preferably polyethylene) fibrils, wherein the filter material has a pressure drop of less than 4 psid at a flow rate of 10 gal/hr and a filtration efficiency of at least 98% of 1-2 micron particulates at a pressure differential of 30 psid. In certain preferred embodiments, the filter material, which is most preferably a sole sock layer, has: a pressure drop less than 1.5 psid at a flow rate of 10 gal/hr and filtration efficiency is at least 99% of 1-2 micron particulates at a pressure differential of 30 psid; a mean flow pore size greater than 4 microns while its nominal pore-size filtration rating is 1 micron; a Gurley Hill porosity rating no more than 5 sec/100 cc; a thickness of less than 0.15 mm; and/or a basis weight of less than 45 g/m2.

Abstract: A filter device, particularly for filtering melt-type fluids, such as polymer melts, includes at least one filter disk having two filter disk halves connected to each other by their edges and provided with filter material on their exterior surfaces. The filter disk halves are held apart by a supporting device delimiting a substantially free hollow area between them, through which a fluid can flow freely. Inwardly, they delimit an outflow opening for the melt-type filtered fluid. The supporting device has individual supporting cams of substantially equal outer dimensions and arranged in several groups. Separated from each other, the supporting cams extend radially outwardly form the outflow opening, are rigidly connected to at least one of the two halves, and traverse the hollow area in such a way as to rest against the other filter disk half. This results in a filter device which is economical to produce and which has enhanced filter performance when in operation.

Abstract: A filter arrangement has a filter vessel with an interior divided by a partition into a filtrate chamber and an unfiltered material chamber. The partition has through openings allowing passage of filtered liquid from the unfiltered material chamber into the filtrate chamber. Filter candles are connected to the through openings of the partition. Each filter candle has a filter pipe and a candle chamber surrounded by the filter pipe. A displacement member is arranged in the candle chamber and fills the space of the candle chamber partially. The displacement member has an exterior surface and the filter pipe has an inner surface, wherein between the exterior surface and the inner surface at least one flow channel is defined.

Abstract: The invention provides a filter cell and a filter cartridge in which the filter cell includes an inner separator disc having a central aperture about which is located a plurality of upstanding pins or teeth, the pins or teeth being formed integrally with said separator disc. The filter cell includes layer(s) of filtration medium. The filter cartridge includes a plurality of filter cells arranged in contiguous and stacked relationship, adjacent filter cells being spaced from one another by spacer rings or gaskets, means being provided to hold the filter cells and spacer rings or gaskets in position to form said cartridge, the cartridge having an elongate central aperture into which filtered fluid may flow.

Abstract: A membrane filter apparatus includes a membrane unit 50 composed of an array of membrane elements 51 disposed within a treatment tank 31. A skirt element 71 is disposed at a bottom portion of the membrane unit and an aerator 61 is disposed under the skirt. A partition is also disposed at the bottom of the membrane unit forming compartments within the skirt element. The gas bubbles discharged from the aerator increase their rising force upon entry into gaps between the membranes. Because of the arrangement of the partition within the skirt element the flow rate of bubbles along the opposite side edge portions of the membrane unit can be increased having the advantage of cleaning the entire surface of each membrane, thereby preventing clogging by sludge, SS, colloid, etc. within the gaps between the membranes. Therefore, filtration can be maintained over a longer period of time and the power required for filtration can be reduced, as well as, the frequency of manual periodic cleaning, chemical cleaning, etc.

Abstract: A gross filter in a drainage device for filtering fluids drained from the pleural cavity of a patient comprising a filter body having a first side panel, second side panel, back panel and bottom panel that assemble to form a generally box-shape filter with open front and top portions. The gross filter is located in the first of two subchambers that comprise the collection chamber. The filter body further comprises a filter screen sized for filtering gross particulates, such as blood clots, that may become entrained in fluid drained from a patient. The gross body is configured so as to permit the further filtering of fluids when blood clots have formed and blocked the filter screen of the filter's bottom panel from fluid flow therethrough, thereby allowing uninterrupted filtering of blood into the collection chamber through the first and second side panels instead.

Abstract: A filter element assembly (10) has at least two cylindrically-shaped and concentrically-arranged filter media sleeves (11, 12), each connected at one end thereof to an inlet plate (13) and each connected at the other end to a terminal plate (20). Openings (16) are provided in the inlet plate to permit entry of liquid to be filtered into the annular space between the filter sleeves. The terminal plate is closed to prevent the flow of unfiltered liquid from the annular space between the sleeves and to force the liquid through the porous media of the sleeves to effect filtration. The ends of the filter sleeves are ultrasonically welded to flanges extending from the plates.

Abstract: A rotary disk filter comprises a rotatable drum (2) and at least one disk-shaped filter member (10), which on the outside of the drum extends outwards in the transverse direction of the drum. The filter member (10) has a filter support unit (40) and a filter portion (21) supported thereby. A liquid duct (6) extends from the drum (2) through the filter member (10) and out through the filter portion (21). The filter portion is formed of at least one filter segment (20) which comprises a filter frame (22) and a filter cloth (21) expanded by the frame. The filter segment (20) is detachably secured to the filter support unit.

Abstract: The invention relates to an improved separation device in which a plate unit containing the filter comprises a separate abutment ring and a cassette which can be easily connected thereto, said cassette comprising at least one filter together with, if required, a frame belonging thereto so as to support the filter. If the filter consists of a flexible membrane, this is fitted into a special frame. However, if the filter is a rigid self-supporting filter of a porous material, for example, a ceramic filter or the like, a separate frame is not needed to support the filter.

Abstract: A filtration apparatus is provided, of the type that includes a stack of rapidly rotating membrane packs (32, FIG. 2) and a stack of stationary separator elements (36A, 36B) interleaved with the membrane packs to leave thin gaps (40A, 40B) between them, which obtains the advantages of both series-connected and parallel-connected systems. A feed conduit (82) connects the radially outer ends (110) of the gaps, to carry feed fluid into and out of each gap. The rapidly rotating membrane packs cause radially outward flow (94, FIG. 5) near their surfaces, which causes radially inward flow (102) near the surfaces of the stationary elements, to cause fluid flow radially inwardly and then outwardly through each gap. The system is operated so particles (111, FIG. 6) of the feed fluid can build up on the rotating pack surfaces (92) only to a thickness that is much less than one-half the thickness (116) of the gap, before commencing any procedure to clean the membrane pack surfaces.

Abstract: A pressure plate filter having a filter vessel with an upper cylindrical section and a lowers downwardly tapering conical section. A stack of spaced-apart filter plates is mounted on a support frame within the filter vessel for pivoting about an offset axis between a lowered filtering position in which the filter plates are horizontally arranged within the conical sections to a raised filter cake discharge position in which the filter plates are supported above the conical section in a sloped position. The stack of filter plates is raised and lowered by means of a hoist assembly. In a further embodiment, the filter includes a separation frame which can move relative to the support frame and which causes the filter plates to move apart relative to each other when placed in the raised discharge position.

Abstract: A filter sector for a rotating filter disc has filtrate conduits for filtrate resulting from filtration which is discharged at the more narrow end of the filter sector. The filtrate conduits are outwardly defined by a filtrating layer permeable to the filtrate. The filter sector has at least one element provided with a profiling forming the filtrate conduit. The profiled element itself forms the filtrating layer because the profiled element has a perforation permeable to the filtrate.

Abstract: A filter for a washing machine is disclosed. The filter includes a check valve fixed to the lower side of a rear panel of a pocket type filter for confining the flow of the washing water introduced into the pocket type filter. The check valve has a fixing portion which is fixed to the lower side of the rear panel by being inserted into a fixing recess formed at the lower side of the rear panel, a moving plate which is extended from the fixing portion to be inclined toward the front panel and opens/closes the space between the front panel and the rear panel, and a connecting portion for connecting the fixing portion to the moving plate and having a thickness thinner than the moving plate in order to reliably move the moving plate.

Abstract: Filter press apparatus comprises a plurality of substantially parallel filter plates assembled as a unit and located within a substantially rigid outer shell to provide a closed vessel to which can be supplied medium under pressure to be filtered via the plates, a substantially impermeable primary membrane lining the shell for forming a substantially incompressible boundary wall to the unit on supply of pressure medium to the space between the primary membrane and the shell, and a secondary membrane having an intermediate extent between the primary membrane and the unit which, with the primary membrane urged towards the unit, moves axially with the unit and slides relative to the primary membrane to eliminate stress in the primary membrane during the compression stage.

Abstract: A filter element assembly has at least two cylindrically shaped and concentrically arranged flexible filter media sleeves each connected at one end thereof to an inlet plate and each connected at the other end to a closed end plate. Openings are provided in the inlet plate to permit entry of liquid to be filtered into the annular space between the filter sleeves. The closed end plate prevents flow of unfiltered liquid from the annular space between the sleeves so as to force the liquid through the porous media of the sleeves to effect filtration. Each of the filter sleeves is supported by a rigid, cylindrically shaped mesh screen of an annularly shaped basket.

Abstract: A filter for a washing machine is disclosed.

Abstract: A fluid filtration device is disclosed which includes a capsule housing having an upper housing portion defining an axial fluid inlet and a lower housing portion defining an axial fluid outlet, a filter assembly including an elongated mounting post and a plurality of filtration cells supported on the mounting post in axially spaced apart relationship, and structure operatively associated with the mounting post and the lower housing portion for effectuating axial compression of the filtration cells relative to the mounting post when the mounting post is engaged in the lower housing portion during assembly.

Abstract: An elongated internal core tube suction strainer supported at its ends for use in a suction system is disclosed as is a suction system comprising the elongated suction strainer in combination with ECCS pipes in various support combinations. The elongated internal core tube suction strainer of this invention is particularly suited for use with boiling water reactor (BWR) and pressurized water reactor (PWR) nuclear power plants. Because of the flexibility of the suction strainer of this invention, the suction strainer can be adapted for use in a variety of reactor plants. The elongated suction strainer has an internal core tube defining a plurality of fluid inlets and an exterior filtering structure defining a plurality of perforations.