Abstract: A filter (110) is provided with a fixture (70) having a first set of axially extending inner pillars (72, 74, 76, 78) defining a first cylinder (80) along inner bend lines (34) of inner pleat tips (32) of an annular pleated filter element (22), a second set of axially extending outer pillars (82, 84, 86, 88) defining a second cylinder (90) extending along outer bend lines (38) of outer pleat tips (36) of the filter element (22), inner and outer circumferential rings (92 and 94) extending around the respective first and second sets of pillars and circumferentially spacing and supporting such pillars, and a plurality of radial spokes (100, 102, 104, 106) at an axial end (98) of the fixture (70), each spoke extending radially between a respective inner and outer pillar and radially spacing and supporting respective inner and outer pillars in radially spaced concentric relation defining a reception annulus (108).

Abstract: A cylindrical filter has a filter element with a filter surface pleated in a star shape from a filter cloth and provided with an external support element. The support element is designed as a lattice-like support cylinder with intersecting lattice bars running slantwise to the outer peaks of the star-shaped pleated filter element. The lattice bars run at an angle of 45°, or at an angle in the range of 45°, to the peaks of the star-shaped filter element. The ratio of the width of each lattice bar to the thickness is about 5:1. The distance between two lattice bars running in the same direction amounts to about 20 to 22 times the width of one lattice bar. At least a portion of the peaks of the filter element is joined to, or preferably is welded to, the lattice bars.

Abstract: A filter assembly including a filter vessel having an inlet and an outlet and defining a filter chamber therebetween. A basket assembly is removably supported within the filter chamber. The basket assembly has a diameter less than the diameter of the filter chamber so as to define an annular flow passage about the basket assembly. The basket assembly includes an outer permeable member and an inner permeable member having a diameter which is less than the diameter of the outer permeable member such that the inner permeable member is received within the outer permeable member so as to define an annular space therebetween and an inner flow path. The inner permeable member includes a permeable rigid closed end. The basket assembly is capable of supporting a bag type filter having at least one closed end such that it may be supported over both the inner and outer permeable members bounding the annular space therebetween.

Abstract: Filter cartridges include a pleated multi-layer filter media having a filtration membrane layer, and a structural support layer for the membrane layer which is in the form of an expanded polymeric film mesh. Most preferably, the membrane layer and the expanded polymeric film support layer are each formed of a fluoropolymer, most preferably PTFE. The preferred expanded polymeric film support layer is in the form of a relatively open mesh structure having generally diamond-shaped apertures. Improved flow rate characteristics through pleated filter media ensue when the diamond-shaped apertures of the mesh are oriented such that the long dimensions (LD) thereof are substantially transverse to the elongate pleat axis of the pleated filter medium in which the mesh is employed.

Abstract: A filter element assembly has at least two cylindrically shaped and concentrically arranged filter media sleeves each connected at one end thereof to an inlet plate and each connected at the other end to a closed end terminal 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 terminal 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.

Abstract: A screen used in the production of cellulose pulp may be mounted in a digester to minimize traditional screen problems (including clogging) without introducing new problems. The screen comprises a screen plate having a plurality of slots formed in it with an inclination angle, which is 30-60° with respect to the bottom edge of the screen plate. The screen plate may comprise a plurality of parallel screen bars side-by-side, or an integral metal plate with slots formed in it. The slots have a width between 1-5 (e.g. 2-4) millimeters and a spacing between them of 3-9 millimeters.

Abstract: A drain filtering system is disclosed, comprising a filter placed within a basket which is suspended from frame positioned underneath a drain grate atop the inlet to a storm drain. The filter is constructed from materials which filter out heavy metals and hydrocarbons from the water passing through. The filter also has overflow outlets to prevent back-up of storm water during periods or heavy rain. The basket is constructed from a corrosion resistant material, preferably high density polyethylene which can withstand the extreme pressures exerted by waste and water collected within the filter.

Abstract: A cartridge filter has a filter element and a frame formed of plates. The plates are installable around the filter element and are interconnectable in the area of the sides of the plates. The plates have plug-in connection members which interact with corresponding plug-in connection members of adjacent plates to thereby affix the plates to one another.

Abstract: An insert for use in a drain basin, comprising an outer wall defining a periphery of the insert and having a top edge and a bottom edge. A perforated bottom surface extends across the lower periphery of the insert. A filter, resting on the perforated bottom surface, has a peripheral edge enclosing a central portion. A flange extends inwardly from the top edge of the outer wall past the peripheral edge of the filter. The flange directs drainage water past the periphery of the filter and to its more central portion, whereupon impurities within the drainage water are extracted and filtered water exits through the perforated bottom surface into the drain basin. In a preferred embodiment of the invention, the inward-extending flanges are angled downward toward the filter. In a second embodiment, the filter, bottom surface and inward-extending flanges are arranged in a cartridge, which is removably placed inside the periphery of the outer wall.

Abstract: At a distal end of a slide bar 4 which is axially slidably inserted in a through hole 1a of a housing 1 is formed a cylindrical filter chamber 7. The filter chamber 7 has a communicating hole 6 communicating with an inlet 3 provided in the housing 1 and a concave 5 formed at an outer peripheral face thereof except an area adjacent to the communicating hole 6 and communicating with an inlet 2 provided in the housing 1. The concave 5 is provided with a plurality of fitting holes 11 extending from the outer peripheral face toward an axis core of the filter chamber and spaced in circumferential and axial directions with respect to one another. Into each of the fitting holes 11 is inserted a screen cartridge 8 which consists of a breaker plate of a perforated plate in a form of a bottomed conical tube and a net member in a form of a bottomed conical tube.

Abstract: A screen apparatus of the invention is provided with a tank for receiving a papermaking material; a screen situated inside the tank for dividing the tank into a first chamber and a second chamber to separate a foreign substance from the papermaking material; a first supply passage for supplying the papermaking material into the tank; a second supply passage for supplying the papermaking material into the tank; a stirring member disposed between an inner wall of the tank and the screen to stir the papermaking material introduced in the first chamber; a screened papermaking material discharge passage communicating with the second chamber for discharging a screened papermaking material outside the tank; and a foreign substance discharge passage communicating with the first chamber for discharging a foreign substance outside the tank.

Abstract: Improved installation for cleaning/recovering liquids with particles in suspension, which is comprised of a first tank, which contaminated liquid with particles in suspension from cleaning the filtering equipment, reaches. This tank includes a guillotine-like mobile separation element, which subdivides it into two independent compartments. Contaminated liquid reaches one of them and the particles in suspension settle in the other compartment, forming sludge, which is evacuated to a second tank, which includes a grill-tank supplied with a renewable filter bag where the particles in suspension of this sludge are retained, recovering dirty liquid. This dirty liquid is evacuated to a third storage tank, from where it is recycled to the filtering equipment.

Abstract: A drain filtering system is disclosed, comprising a filter placed within a basket which is suspended from frame positioned underneath a drain grate atop the inlet to a storm drain. The filter is constructed from materials which filter out heavy metals and hydrocarbons from the water passing through. The filter also has overflow outlets to prevent back-up of storm water during periods of heavy rain. The basket is constructed from a corrosion resistant material, preferably high density polyethylene which can withstand the extreme pressures exerted by waste and water collected within the filter.

Abstract: A cartridge filter has a filter element and a frame formed of plates. The plates are installable around the filter element and are interconnectable in the area of the sides of the plates. The plates have plug-in connection members which interact with corresponding plug-in connection members of adjacent plates to thereby affix the plates to one another.

Abstract: A bilge water filtration system for removing petroleum-based liquid contaminants from the bilge water as it is being pumped from the bilge to a bilge water discharge outlet in the hull of a marine vessel, such as a boat or yacht. The filtration system employs filtration media enclosed in a modular unit equipped with a fill tube, such that media can be readily installed in the system, and then later removed to allow for subsequent destruction or recycling of the contaminants trapped by the media. The filtration system of this invention is adapted to be installed in-line with an existing bilge pumping system on boats and yachts of practically any size, and without requiring special modifications to the pumping system. In addition, the filtration system does not impede the operation of the bilge pumping system, but allows the flow bilge water to flow from the boat's bilge at conventional flow rates and with a minimal pressure drop caused by the filtration system.

Abstract: A screen used in the production of cellulose pulp mounted in a digester minimizes traditional screen problems (including clogging) without introducing new problems. The screen comprises a screen plate secured to an internal surface of the digester. The screen plate has a plurality of slots formed in it with an inclination angle, and the screen plate is positioned in the digester so that the inclination angle of the slots relative to the horizontal X axis of the X-Y plane defined by the internal surface of the digester is between 30-60.degree.. The screen plate may comprise a plurality of parallel screen bars side-by-side, or an integral metal plate with slots formed in it. The slots typically have a width between 1-5 millimeters and a spacing between them of 3-9 millimeters.

Abstract: A filter device for removing suspended solids from storm water includes support device removably retainable in an entrance to a drain, a cage cooperating with the support means, filtration devices removably attachable to the support and suspended in the cage for removing suspended solids from storm water entering the drain.

Abstract: A screen basket for filtering an aqueous fiber suspension includes a cylindrical foraminous filter element, anchoring collars surrounding and fixed to opposite ends of the filter element, at least two support rings surrounding the filter element, and support rods for adjusting the support rings between axially contracted positions disengaged from the anchoring collars, and axially expanded positions engaging the anchoring collars and axially tensioning the filter element. In a first embodiment, the anchoring collars are relatively flexible. This allows the anchoring collars to be deformed for insertion of the cylindrical foraminous filter element within the support rings. Alternatively, the upper and lower support rings are divided into segments that are easily disassembled and reassembled to facilitate removal of a defective cylindrical foraminous filter element and installation of a new filter element.

Abstract: A filter for a washing machine is disclosed.

Abstract: Disclosed a filter for a washing machine including a filter case attached to an inner lower portion of a dehydrating tub of the washing machine for forming a predetermined space with the dehydrating tub; and a pocket type filter including a front panel attached with a mesh net to one side thereof for filtrating fluff intermingled in the washing water, a rear panel for forming a predetermined space with the front panel by being coupled to the front panel by means of a hinge shaft to be opened/closed while being attached with a mesh net for filtering the fluff intermingled in the washing water to one side thereof, and a check valve fixed to the lower side of the rear panel for confining the flow of the washing water introduced into the space between the front panel and the rear panel. The filter is attached to the inner lower side of the washing machine.

Abstract: A storm drain filter (10) functioning to remove selected substances from water flowing through a municipal storm drain. The storm drain filter (10) has an absorption filter (18) functioning to absorb selectable substances from a liquid. The absorption filter (18) comprises an absorption filter frame (18A) enclosing an absorption filter absorbing material (18B) between pairs of at least two absorption filter longitudinal retainers (18C) and at least two absorption filter transverse retainers (18D). The at least two absorption filter longitudinal retainers (18C) and at least two absorption filter transverse retainers (18D) function to retain the absorption filter absorbing material (18B) within the absorption filter frame (18A). A tray (16) functions to support the absorption filter (18). The tray rear (16B) comprises at least one orifice (16BA) functioning to permit liquid to flow therethrough.

Abstract: A support structure for thin screenplates utilized for fine screens in Fibresaving applications for pulp fiber suspensions or the like wherein a support structure having a screen support in minimum screen contact positioned by a support reinforcement and positioning device, assembled to form an integral structure which reduces the stresses and deflections in the thin screenplates occurring in operation.

Abstract: A filter ring for use around the circumferential fuel and timing fluid inlets of a diesel engine fuel injector or similar fluid conducting body. In a first preferred embodiment, the filter ring includes first and second semi-annular, band-shaped filter portions, an integrally formed hinge for pivotally interconnecting the filter portions, and a snap latch mechanism for releasably connecting the opposite ends of the filter portions. In a second preferred embodiment, the filter ring includes a pair of substantially identical snap latch mechanisms for detachably interconnecting the filter portions. The snap latch mechanism is formed from a bead or projection that extends substantially along the entire height of the end of one of the filter portions, and a complimentarily shaped groove on the end of the other filter portion.

Abstract: A filter ring is provided that is particularly adapted for use around the circumferential fuel and timing fluid inlets of a diesel engine fuel injector. The filter ring includes first and second semi-annular, band-shaped filter portions, an integrally formed hinge means for pivotally interconnecting the filter portions, and a snap latch mechanism for detachably connecting the opposite ends of the filter portions. The snap latch mechanism is formed from a bead that extends substantially along the entire length of one of the filter portion ends, and a complementarily-shaped groove on the end of the other filter portion. The thickness of the bead and groove is less than the thickness of the opposite ends of the band-shaped filter portions so that the inner diameter of the resulting filter ring seats securely around a complementarily-shaped annular recess in the fuel injector.

Abstract: A mesh enclosed container is provided to remove melt water from frozen blocks of contaminated sediment which has been extracted from a marine environment. The mesh enclosure has a number of porous wicking tubes for insertion into corresponding cavities in the frozen sediment blocks. Wicking material is inserted into the tubes to enhance melt water flow out of the sediment blocks during the thawing cycle. A sealed container may be provided to enclose the block and meshed container to prevent escape of volatile materials during the thawing cycle. The sealed container will also collect melt water accumulated during the thawing cycle. A method of melting frozen marine sediment blocks is provided to recover treated water.

Abstract: A plurality of like wedge bars are formed with a groove between two lands. The wedge bars are assembled into a cylindrical screen, with the grooves defining screening slots of a uniform width. The wedge bars may be electron beam welded or furnace brazed to support rings. Alternatively, the wedge bars may be held in place by slots in support rings and circumferential clamping applied by jack wedge assemblies. Multiple cylindrical segments may be connected together into a single screen cylinder by an ear and slot arrangement. The screen cylinder so formed may have slots of 0.004 inches or less in width, and may be formed of a wide range of wear and corrosion resistant materials.

Abstract: A capsule type filter assembly provides increased strength by fixing ends caps of a filter element to a housing at both ends. At one end, a tubular part extends through a hole in the housing and is joined to the housing. An inner space of the tubular part communicates with the inner space of the filter element. In this configuration, the structural strength of the filter housing is enhanced by making the integrated body of the end caps and the filter element function as the reinforcing means for the housing.

Abstract: A combined venous and cardiotomy blood reservoir is provided that includes a rigid shell having a top, a bottom, and a continuous side wall. The top and bottom walls are connected to the continuous side walls so as to define a reservoir for venous and cardiotomy blood. A double column structure is provided within the blood reservoir, the first column for receiving and degassing venous blood, the second for receiving, filtering and defoaming cardiotomy blood. The venous blood filtering and defoaming components can include a top venous screen plate, a bottom venous screen plate or stand and a perforated venous cage captured therebetween. The venous column is of generally D-shape and has a double screen structure including an inner microscreen and an outer microscreen received respectively on the inside and outside of the perforated venous cage.

Abstract: A method and apparatus for a filter assembly having a filter element with a plurality of openings encapsulated in a filter element carrier in a first molding operation, which may include formation of first and second channels on first and second side portions of the filter element carrier. One or more first holes are also formed through the filter element carrier in the first operation, wherein the first holes interconnect the first side portion of the filter element carrier and the second side portion of the filter element carrier so as to expose filter element portions encapsulated therebetween. A first sealing element is formed on the first side portion of the filter element and a second sealing element is formed on the second side portion of the filter element with a molten sealing element material in a second molding operation.

Abstract: The present invention is drawn to an apparatus for filtering sediment from beverages, especially port and other fine wines, comprising a cork or stopper member having a central aperture; a tube disposed through said central aperture of said cork or stopper, said tube having a first end and a second end; a first filter member disposed generally around and extending from one end of said tube, forming a junction with said tube, said first filter member being of a fine mesh for straining solids and sediment; and a second filter member interposed at or about said junction of said filter member and said tube, said second filter member being of a finer mesh than the mesh of said first filter member.

Abstract: A paper making screen plate 1 includes first and second support members 31, 32, a plurality of longitudinal members 33 each having an end fixed to the first support member 31 and the other end fixed to the second support member 32, respectively and annularly disposed parallel with each other with gaps t defined therebetween, an intermediate support member 35 interposed between the first support member 31 and the second support member 32, having openings 36 for causing the longitudinal members 33 to pass therethrough and supporting the longitudinal members 33 by being abutted thereagainst, a first interval keeping member 381 having an end abutted against the first support member 31 and the other end abutted against the intermediate support member 35, respectively, and a second interval keeping member 391 having an end abutted against the intermediate support member 35 and the other end abutted against the second support member 32, respectively.

Abstract: A basket for a paper-making screen is formed of a plurality of rod-shape members with a circular cross section, a first supporting member having a plurality of first receiving portions arranged annularly in predetermined constant intervals, and a second supporting member having a plurality of second receiving portions arranged annularly in predetermined constant intervals. The first and second supporting members are located on longitudinal end portions of the rod-shape members and fixed thereto. A space between the rod-shape members includes wide entrance and exit portions, and a narrow middle portion to thereby properly select paper materials through the spaces.

Abstract: A fuel injection valve has a fuel filter developed as one piece with a holding collar. The holding collar extends radially beyond the fuel inlet connection and has a nose outside the fuel inlet connection. The circumferential nose of the holding collar together with the groove on the outer circumference of the fuel inlet connection forms a detent connection by which the fuel filter is fastened in pin-pointed position. Between the base body of the fuel filter and the inner wall of the fuel inlet connection there is merely a clearance fit, so that formation of chips is avoided within the fuel injection valve. The fuel injection valve is particularly suitable for use in fuel injection systems of mixture-compressing external-ignition internal combustion engines.

Abstract: Waste washout liquid containing liquid washable photopolymer from a printing plate manufacturing process is subjected to filtration via a centrifugal filter unit. The unit has a collector for the solid material arranged for rotation and disposed so as to allow deposition upon it of solid material during its rotation. The unit is fitted with at least one of a pretreatment unit for coagulating the solid material and a collector removable from the filter unit so as to allow its disposal together with the solid material deposited on it. Usually, the pretreatment unit is a preheater and the collector is a disposable liner within a rotatable chamber.

Abstract: A filter for removing hazardous particulate matter from an aqueous flow. The filter includes a rigid support housing having an input port for the aqueous flow, an exit port for the aqueous flow, a brace to securingly engage a filter vessel for the aqueous flow, an internal seal and an external seal, and a disposable filter cartridge configured similarly to the housing and sized to be substantially entirely received within the housing and sealingly engage the internal seal and having a filter medium that extends across a path from the input port to the exit port when received in the housing, the cartridge having a terminal seal located to sealingly engage the cartridge to the aqueous flow filter vessel outside of the housing when the cartridge sealing engages with the internal seal.

Abstract: This invention is a device for holding a flexible fine mesh fluid filter 30 in a container 12 while a fluid, such as paint, is being drawn from the container by spraying equipment 8. More specifically, the invention comprises a ring of flexible material 20 and a purality, preferably two, of elongate flexible members 18, ends of which are secured to the flexible ring, with their intermediate parts depending from the said ring, and secured together where they cross at their intermediate depending portions, and together with the flexible ring, forming a pocket over which a fine mesh fabric fluid filter is to be positioned and held. When so assembled in use the suction pipe of the spraying equipment with its filter is received within the pocket and held in the container to filter the paint, or other fluids as it is drawn from the container. In the best and preferred form of the invention, all of the parts above mentioned are in the form of coil springs, but it should not be considered so limited thereto.

Abstract: A suction head for a fuel line of a fuel tank, especially for hand-held working tools such as motor chainsaws, has a cup-shaped housing made of plastic and comprising a mantle wall with cutouts and an end face with an opening. A filter mesh is covering the cutouts. A filter insert is inserted into the housing through the opening in the end face. A cap made of plastic and having a connector for the fuel line is sealingly connected to the end face with the opening.

Abstract: A filtering arrangement is provided for effluent from a septic tank prior to passage to a drain field or other disposal. The filtering arrangement makes use of an open-top, U-shaped filter into which the septic effluent is conducted from the top, preferably through a T-fitting providing an open-topped channel leading into the U-shaped filter. The filter may be formed of an outer perforated casing and an inner lining of an open-cell-type polymeric material which effects the filtering of the effluent. The U-shaped filter is preferably suspended from the T-fitting. A preferred filter includes an inner and outer casing with a fibrous filter material between. The filter also preferably has an imperforate lower portion to retain a permanent body of liquid in the bottom of the filter. The arrangement provides fail-safe filtering automatically adjustable for varying flow rates and conditions of the filter. The polymeric filter medium is changed periodically to maintain efficiency.

Abstract: A filter support tube for use in a filter cartridge including a helical wound wire defining a cylinder and a plurality of reinforcing strips extending generally parallel to a longitudinal axis of the helical wire cylinder and circumferentially spaced from one another about a perimeter of the cylinder. The multiple turns of the helical wire are embedded in the reinforcing strips and extend through it. The wire is coated with a bonding agent to permit the wire to bond to the reinforcing strips and to provide corrosion resistance. The reinforcing strips embedding the wire lock the wire in the desired helical configuration and provide the required column strength for the filter support tube.

Abstract: A liquid filter device for use with bottles holding wine or other liquids, for use in filtering cork or other sediments from the liquid while pouring the liquid out of the bottle, comprising a generally tubular body which may be inserted into the neck of a bottle, where the body has a top portion open to the internal volume of the filter device and a bottom portion sealed from the internal volume, openings formed in the body, a filter located on the inside of the body to cover such openings and means for strengthening said body being integrally formed thereon.

Abstract: A filter for an in-tank pump of an automobile fuel tank includes a flat bag-shaped filter body, a connector body and a suction nozzle. The filter body has a closed front end and a rear end wall and includes a mesh member and a filter frame having a plurality of longitudinal and lateral ribs formed on the upper and lower portions thereof. The connector body includes a cylindrical attachment for attaching the filter body to a suction port of an in-tank pump and an end plate joined to an outer surface of the rear end wall of the filter body. The suction nozzle is attached to the end plate of the connector body so that it communicates with the cylindrical attachment and thrusts into the filter body. The suction nozzle is made of a deformable material and formed into a mesh cylinder having a closed forward end disposed within the filter body at a position of the closed front end of the filter body.

Abstract: The invention relates to a filter cartridge including a filter element equipped with two annular flanges and two supporting cages. In order to be able to disassemble the filter cartridge for the purpose of facilitating disposal, the two annular flanges are provided with inner and outer threads. Four mounting rings are provided with mating inner and outer threads and can be screwed onto the annular flanges while being supported on the two supporting cages. Once the threaded rings are tightened, the filter element is under tension.

Abstract: A valve fuel injection including a filter on the valve, the filter includes a filter cloth which is disposed on the circumference of the valve body in such a way that the filter cloth covers the through openings of the valve body. The filter cloth is provided with a sprayed plastic coating except in the area of the through openings in order to fix the filter cloth in its position relative to the through openings. In this way, contamination of the valve interior with plastic particles is avoided. The fuel injection valve is particularly suitable for fuel injection systems of internal combustion engines.

Abstract: A pulp dryer screen assembly includes a rectangular screen, a rectangular frame having four interconnected, elongated frame members and four support members, each support member being adjacent a frame member and aligned therewith. The screen has a taut inner portion and surrounding edge portions clamped between the frame members and adjacent support members. The inner portion of the screen has a pulp fiber collecting surface which has an upstream side with respect to air flow and extends along a plane. The frame and support members are entirely on a downstream side of the plane opposite the upstream side. Preferably the frame members are square tubes, and the support members have orthogonal Z-sections for small screens, and at least two orthogonal W-sections for large screens. The screen is tightened within the frame by drawing opposite support members away from each other to clamp edge portions of the screen between the support members and the frame. The support members are then connected to the frame.

Abstract: A container capable of dewatering wet mixtures and for transportation which comprises (1) an external cylindrical container with openings therein having a hanging member in an upper portion thereof, wherein the hanging member can shut the upper portion of the external cylindrical container, and wherein the external cylindrical container has an easy to open and shut closure at a bottom portion and (2) an internal porous container for dewatering a wet mixture is described. This container permits dewatering, packing, storing and transporting operations to be easily achieved.

Abstract: Apparatus for filtering liquid effluent comprises, in sequence, inlet means, filtration means, and outlet means. Each filtration means comprises at least one disposable sack filter (2, 3, 4, 31) of defined porosity. The open end of each sack filter is attached to an outlet conduit in communication with the inlet means. The opposing closed ends of the sack filters are attached to movable supports to cause agitation of the sack filters.

Abstract: A filter candle apparatus is provided comprising an elongated mesh pack defining an axial opening therethrough and having an end cap fixedly secured to one end and an end fitting fixedly secured to the opposite end, the end fitting defining an opening therethrough which is coaxial with the axial opening of the mesh pack, a hollow core tube defining a plurality of openings therein positioned within the axial opening of the mesh pack and being removably slidable therethrough, the core tube having an end member surrounding one end thereof that engage the end fitting of the mesh pack, a ring-shaped bearing recessedly held within and by the end fitting of the mesh pack and engaging the core tube proximate the end member, and an outer guard defining apertures therein adjacently surrounding the mesh pack.

Abstract: A repair method for filter elements such as those used to filter polyester during the later stages of polyester manufacture in which the filter media is a particulate solid media arranged in a desired shape and maintained in that shape by a surrounding porous container that has filtration openings of a desired size. The method fills undesirably large openings in the surrounding porous container that result from damage to the container and through which enlarged openings the particulate solid media would otherwise escape with a polymeric resin. The polymeric resin is a resin with a glass transition temperature when cured that is at least greater than the melting point of polyester, and that has an absence of any chemical functional groups at temperatures at least as great as the melting point of polyester that would substantially react with polyester, the glycol precursors of polyester, the acid precursors of polyester, or the solvents useful in cleaning polyester from such filter elements.

Abstract: A filtering arrangement is provided for effluent from a septic tank prior to passage to a drain field or other disposal. The filtering arrangement makes use of an open-top, U-shaped filter means into which the septic effluent is conducted from the top, preferably through a T-fitting providing an open-topped channel leading into the U-shaped filter. The filter is preferably formed of an outer perforated casing and an inner lining of an open-cell-type polymeric material which effects the filtering of the effluent. The U-shaped filter is preferably suspended from the T-fitting. The arrangement provides fail-safe filtering automatically adjustable for varying flow rates and conditions of the filter. The polymeric filter medium is changed periodically to maintain efficiency.

Abstract: A unit for the dehydration of sludges, particularly for purification plants including a support structure (10) supporting a vibration causing device (24), at least a collection reservoir (11) of sludges positioned above the support structure (10) and having at least one discharge outlet (12) on the bottom, at least a bag-shaped filtering container (14) having an opening engageable to the discharge outlet (12) feeding means (25) to feed the sludges into the collection reservoir (11), collecting means (23) to collect the filtered liquids from the filtering container (14), and at least a control unit (34) to control at least the feeding means (25).