Abstract: A filter is composed of a filter member forming at least two opposed faces, an inner space surrounded by the filter member for accumulation of a liquid, and a coupling member establishing communication between the inner space and the outside to discharge the liquid in the inner space to the outside. The liquid flows through the filter member, is thereby removed of foreign matters, and is discharged via the coupling member. Convexo-concaves are provided on at least one face of the filter member.

Abstract: A fuel filtration device includes a filter medium in which at least two opposing surfaces are formed, an inner portion space that is surrounded by the filter medium and where liquid accumulates, and a connecting member that connects the inner portion space and the outer portion and delivers the liquid in the inner portion space to the outer portion. The filter medium is a non-woven fabric made of material fibers and adhesive fibers, and by melting the adhesive fibers, the fibers are joined.

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 filter element assembly includes two cylindrically shaped and concentrically arranged flexible media sleeves (302, 301), wherein the sleeves are respectively supported against radial flow by an inner and outer cage (325, 330). Respective ends of the sleeves are permanently affixed to an inlet plate 303 and a terminal plate 304. The inlet plate includes a closed central area 315 to prevent unfiltered liquid from entering the cylindrical space 306 defined by the inner filter sleeve. The inlet plate also includes openings 316 to allow unfiltered liquid into the annular space 305 between the sleeves. An end cap 340 is permanently affixed to the inlet plate and includes a support on an upper surface thereof for supporting the assembly within a housing.

Abstract: A submersible fuel filter device (1) of suctional type is connectable to the end of a fuel inlet hose (2) in a fuel tank and comprises a filter (3) consisting of porous plastic with a surrounding outer wall (10) with an upper border (11), a lid (4) provided with an outlet opening (24) that covers the filter (3) and is connected to the outer wall's upper border. The filter is embodied like a cup-shaped body and has a through flow thickness, or material thickness, which is considerably smaller than the other dimensions of the body, and its porosity is less than 10 &mgr;m. The inlet suction hose (2) is connected to said outlet suction opening (24).

Abstract: A liquid filter element frame is provided comprising an elongate injection moulded body having a plurality of support ribs radiating from a central axis thereof and a support ring encircling the outer edges of the ribs at the operatively lower end thereof. The ring has attached thereto a separately manufactured end disc having a smoothly contoured edge for supporting the lower end of a sleeve of filter fabric, in use. A sleeve made of filter fabric and adapted to be used as a cover for the element frame is also provided in which the operatively lower end and optionally also the upper end of the sleeve is made of a double layer of filter fabric. The frame fits within the sleeve in use.

Abstract: A filter and housing for waste water treatment includes a housing having a plurality of coaxially mounted vertically extending sections adaptable to receive a filter cartridge therein. An upper section is provided with an outlet consisting of at least two coaxially aligned rings of preselected diameters wherein the thickness of the rings and the spacing between the rings is sufficient to receive waste water treatment outlets of different diameters. The filter cartridge is comprised of a stacked arrangement of a plurality of disc-dam units wherein each disc-dam unit is provided with a serpentine configured first dam, the first dam extending upwardly from an upper surface of the disc-dam unit, the first dam having terminating ends spaced at outer terminating edges of the disc dam unit to define a cord segment therebetween. The terminating ends are connected by a second dam having a height less than the first dam.

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 is composed of a filter member forming at least two opposed faces, an inner space surrounded by the filter member for accumulation of a liquid, and a coupling member establishing communication between the inner space and the outside to discharge the liquid in the inner space to the outside. The liquid flows through the filter member, is thereby removed of foreign matters, and is discharged via the coupling member. Convexo-concaves are provided on at least one face of the filter member.

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: A filter media for physically separating particles of an abrasive media having a given mean average particle size from a chemical-mechanical polishing (CMP) slurry. The abrasive media has a particle size distribution including particles larger than the mean average particle size. The filter media is provided as being formed of at least one sheet of a porous membrane having a first and second surface defining a thickness dimension of the membrane therebetween, and having a plurality of generally cylindrical capillary pores formed through the thickness dimension sized effective to capture the particles larger than the mean average particle size. In service, the slurry is supplied to the first side of the filter media, and is passed through the media to the second side thereof such that at least a portion of the particles of the abrasive media larger than the mean average particle size is retained on the first side of the filter media.

Abstract: A containment assembly for use with a pressure washing apparatus to contain and collect the relatively light weight contaminants from run-off of a washing fluid after being flowed over an object to be cleaned. The containment assembly includes a settling compartment for collection of the run-off washing fluid therein, and a containment compartment in gravity flow fluid communication with a surface of the collected washing fluid in the settling compartment. As the lightweight contaminants at the surface of the washing fluids gravity flow into the containment compartment, they are contained and collected therein. A fluid extraction assembly is in fluid communication with the contained washing fluid in the containment compartment through an opening therein vertically disposed below a predetermined operational fluid level of the contained washing fluid.

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 compact, high capacity in-tank fuel filter defines a large surface area while simultaneously occupying a relatively small space and defining a small footprint. The filter comprises a body of filtration media and an outlet fitting which is integrally molded to the filtration media and provides communication from the interior of the filter to an associated fuel pump to which it is typically mounted. The filtration media of the body is folded upon itself in a multiple accordion fold configuration and sealed along the non-folded edges. The resulting surface area to size (footprint) ratio provides improved flow capacity, reduced pressure drop and extended service life.

Abstract: A spiral wound type membrane element is formed by winding independent or continuous envelope-like membranes around the peripheral surface of a water collection pipe and interposing raw water spacers between the envelope-like membranes. When running, raw water is supplied from at least the periphery side of the spiral wound type membrane element and permeate is taken out from an opening end of the water collection pipe. In back wash reverse filtration, permeate is introduced from the opening end of the water collection pipe and permeate guided out from the peripheral surface of the water collection pipe is discharged from at least the periphery side of the spiral wound type membrane element.

Abstract: A filter assembly includes a replaceable filter element disposed within a filter housing. The housing includes a removable cover, and a fitting including an internal central conduit extending along the central axis of the housing. The central conduit is bisected along its length and has a pair of flow channels connected to a pair of ports in the fitting. Another port is provided in the fitting and a still further port is provided in the housing. The filter element includes a first circular imperforate end cap, and a second annular imperforate end cap dimensioned to receive the central conduit. First and second filter media loops are supported between the first and second end caps. An imperforate cylindrical wall is radially disposed between the first and second filter media loops. Annular seals are provided around the opening in the second end cap, at the inner end of the first filter media loop, and at the inner end of the cylindrical wall.

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 apparatus (10) which dissipates static charge from fluid flowing through the apparatus has a filter housing (12) enclosing a filter element (14). The filter element includes a tubular filter media assembly (15) which incorporates a conductive structure to draw off static charge in fluid passing through the media. The tubular filter media assembly comprises an outer steel mesh support layer (24); a first intermediate layer (25) of a filtration media; a second intermediate layer (26) of a carbon material, e.g., stainless steel, nickel or carbon fiber mesh, mat or matrix; and an inner steel mesh support layer (27). The filter media assembly is pleated and disposed around a central perforated conductive tube (16). The filter media is electrically connected at one or both ends through conductive adhesive or epoxy to at least one conductive end cap (20, 22). The conductive end cap has a central opening (33, 34), and receives a portion of the grounded filter housing (50, 52), for example, an inlet tube.

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 element for filtering a particle-containing paint composition or a particle loading slurry composition which is a precursor to a particle-containing paint composition is provided. The filtration element comprises at least one filtration layer formed from woven polymer fibers and having substantially uniform pores and two spacer layers. The spacer layers have raised projections to create a space between adjacent spacer layers having contacting projections. The filtration element has a pleated or spirally wound configuration.

Abstract: A solid-liquid separating filter media (4) for sewage, waste water, etc. comprising a mono- or multi-layered filter screen (3) in which a number of filaments (1) are closely aligned in parallel and crosswise bonded to hoops (2) at predetermined points thereof to form integral blind-like structure.

Abstract: A filter bag assembly and method and machinery to form the same wherein spaced opposed filter bag panels are connected together by transversely extending preselectively sized binder strips fastened selectively at opposed ends to the spaced filter panels to restrain outward inflation of the filter bag.

Abstract: An air cleaner provided with a bellows-like air cleaning filter includes an air permeable and pliable strip-like mesh element (3), a plurality of rectangular plastic frames (4) arrayed side by side with a predetermined pitch on one or both surfaces and along the full length of the mesh element (3), the plastic frames (4) being injection-molded and provided at both end portions in the width-wise direction with angled protrusions (5) having an approximately triangular cross-section and hinge portions (7) formed by thinning or linearly grooving a joint portion of the frames (4) between neighboring plastic frames (4). The bellows-like air cleaning filter is employed by transforming it into a cylindrical shape and fitting end caps (9) thereto.

Abstract: My invention comprises a two element filter bag which includes a cylindrical outer element, a generally tubular inner element, a joining means, a securing means, and a diverting means. Cylindrical outer element is hollow, constructed of suitable filter media, and has first and second open ends. Tubular inner element is also hollow, constructed of suitable filter media, and has one closed end and one open end. Tubular inner element is positioned within cylindrical outer element so that the first open end of the outer element is generally coplanar with the closed end of the inner element, and the second open end of the outer element is generally coplanar with the open end of the inner element. Joining means joins the second open end of the outer element to the open end of the inner element. Supporting means is positioned within the inner element through open inner element end and provides support to inner element.

Abstract: Disclosed is a hub ring for a filter wherein a supporting member having a plurality of supporting portions is interposed between a pair of keep plates, a supporting plate for a filter wherein a plurality of wave portions extending substantially in the circumferential direction are arranged in the radial direction, and methods for manufacturing these members. The hub ring has a great opening ratio to achieve a low pressure loss property and causes substantially no residence of polymer, and the hub ring can be manufactured at a low cost. The supporting plate has high pressure resistance, low-pressure loss property, good directivity of polymer flow and excellent polymer mixing effect, and it is suitable for use as a retainer disposed inside of a filter.

Abstract: Disclosed is a hub ring for a filter wherein a supporting member having a plurality of supporting portions is interposed between a pair of keep plates, a supporting plate for a filter wherein a plurality of wave portions extending substantially in the circumferential direction are arranged in the radial direction, and methods for manufacturing these members. The hub ring has a great opening ratio to achieve a low pressure loss property and causes substantially no residence of polymer, and the hub ring can be manufactured at a low cost. The supporting plate has high pressure resistance, low-pressure loss property, good directivity of polymer flow and excellent polymer mixing effect, and it is suitable for use as a retainer disposed inside of a filter.

Abstract: Filter apparatus for filtering contaminants from a fluid, such as machine tool coolant, are disclosed. One filter apparatus includes a filter drum unit having a generally cylindrical open perforated support sheet with a cylindrical screen element mounted thereabout. Circumference varying mechanisms, such as turnbuckles, are connected relative to the support plate to vary the circumference of the support plate and the tautness of the screen element. A disc filter assembly having a mandrel and fluidly attached annular disc filter elements is also described. Each annular disc filter element has an inner structure with concentric ribs forming concentric grooves therebetween which are connected to radially extending grooves. A screen element is supported by the ribs so that the microscreen will not tear while allowing filtering of fluid into the grooves which are in fluid communication with the mandrel.

Abstract: A method of manufacturing a fluid filter comprising: (a) providing a cone having a tip end and an open end and made of a filter material; (b) providing a support element having a plurality of concentric annular members mounted on a base and having outermost and innermost concentric annular members; (c) aligning the central axes of the cone and the support element with the tip end of the cone closest to the support element; and (d) inserting a portion of the cone into a circular area between two concentric annular members by placing a forming sleeve inside the cone and inserting the forming sleeve between the two concentric annular members, the concentric annular members being generally cylindrical and having an interior and an exterior.

Abstract: A filter device inserts into a duct having flow passing from upstream to downstream. The filter device includes fluted filter media having flutes formed therein inserting into a housing. The filter media is stacked and placed at an angle to the prevailing flow direction.

Abstract: This invention pertains to a filter in general and particularly to a filter for use in filtering hydraulic oil circulating in a hydraulic system provided for a hydraulic machine. The filter is formed in a loop and includes at least two filtering materials having different filtration porosities. Those filtering materials are arranged in the circumferential direction of the loop. Since filtering materials are arranged in the circumferential direction, the filter can be manufactured at the same size as the existing filters so that it can be accommodated in the existing filter cases. Also, since the filter has more than one filtration accuracies, it is capable of catching impurities of various sizes. In operation, most of the liquid to be filtered tends to pass through the less fine filtration martial. Thus, the filter creates a small pressure loss.

Abstract: A prefilter bag for insertion into a standard filtration bag apparatus, having a filtration assembly comprising a seamless filter membrane having uniform pore openings preselected within the range of between about 2 and about 50 microns (.mu.) and a linearly channeled, non-deformable, semi-rigid liquid transport thermoplastic sheet in the form of a molded webbing or netting in contact with the upper surface of the filter membrane; said webbing having marginal edges which are coextensive with those of the membrane; said assembly adapted to be shaped by continuous winding of the assembly upon itself for 2 to 5 complete convolutions around a tubular mandrel so as to form a cylindrical tube or cone; the bottom of said cylinder being sealed to prevent liquid leakage and the top of said cylinder, forming a liquid inlet opening, being sealed to a retaining ring adapted to be inserted in, attached to or sealed to an outer, retaining ring of a non-wrapped filter bag.

Abstract: A filter is provided for use with an in-tank fuel pump for an internal combustion engine. The filter is disposed within a fuel tank and includes a main filtration chamber connected to an inlet of the fuel pump and a return fuel chamber connected to the engine for introducing thereto return fuel from the engine. The main filtration chamber has an upper side peripheral wall formed from a meshed filter medium. The return fuel chamber is connected to the main filtration chamber in such a manner that the upper side peripheral wall of the main filtration chamber serves as a partition wall between the main filtration chamber and the return fuel chamber. In one embodiment, the return fuel chamber has a peripheral wall formed from sheet or plate impermeable to fluid.

Abstract: A panel filter for filtering waste media comprises at least two stacked filtering medium sheets. Each sheet is shaped to have two substantially identically-shaped portions integrally interconnected along an intermediate portion thereof. The stack of filtering medium sheets is folded over upon itself along the intermediate portions of the filtering medium sheets to create an inner central cavity of said stack and mating marginal edges that are secured and sealed together to form an outlet opening at a point along the marginal edges. A filtration conduit is received in the outlet opening of the panel filter and communicates with the inner central cavity of the panel filter.

Abstract: The invention relates to a filter cartridge for a filter for filtering liquid or gaseous media comprising two front disks and a substantially hollow cylindrical filter member arranged inbetween the two front disks, with the medium to be filtered flowing through the filter member, with at least one of the front disks provided with a central aperture whereby the filter cartridge is axially mountable onto a medium inlet pipe or outlet pipe with at least one seal sealingly positioned inbetween, and wherein the filter cartridge is detachable from the pipe for replacement. The filter cartridge is designed as a replacement filter cartridge for replacing common filter cartridges having metal parts, wherein the filter consists of paper and/or cotton and/or felt and/or thermally usable plastic non-woven fabric, wherein the front disks and formed of thermally consumable plastic and the seal is formed of a flexible thermally consumable material.

Abstract: An arterial line blood filter for use in extracorporeal blood circuits during heart bypass surgery. The blood filter includes a housing having a cap portion, a base portion and a generally cylindrical wall portion. A filter element is disposed within the housing and divides the housing into an inlet chamber in flow communication with a blood inlet and an outlet chamber in flow communication with a blood outlet. The filter element may include a plurality of concentric annular pleats, the length of which may be substantially equal to the length of the wall portion, the pleats being supported by a support element. In another embodiment the inner surface of the cap defines an inwardly spiral blood flow path which slopes upward and provides an effective means of distributing blood over the filter element.

Abstract: A filter element for use in a rotating vacuum filter assembly is provided. It has frame having an inner end, an outer end and intermediate sides which define the perimeter of opposed substantially parallel filter regions and a central filter chamber, wherein the inner end is adapted for mounting the frame to a hollow central hub and wherein the inner end defines a central passage which cooperates with a corresponding passage in the hub for communication between the filter chamber and the interior of the hub.

Abstract: A support element is provided for a tubular filter device having an oversized filter sock. The support element provides relief portions within which excess filter media of the filter sock enters, during use of the tubular filter device, to eliminate detrimental wrinkling and compaction of the filter media.

Abstract: Disclosed is a porous device adapted to remove particulates from a fluid passed through the device. The device includes a porous filtration medium. The medium has a first surface having an area which is adapted to receive the fluid for passage through the medium and a second surface from which the fluid exits the medium. The device is configured to variably increase the area of the first surface in response to a differential in fluid pressure between the first surface and the second surface so as to extend the life of the device. In some embodiments the device is adapted to retain the increase in surface area which acts as a visual indication that the device is reaching its capacity to retain particulates.

Abstract: Disclosed is a hub ring for a filter wherein a supporting member having a plurality of supporting portions is interposed between a pair of keep plates, a supporting plate for a filter wherein a plurality of wave portions extending substantially in the circumferential direction are arranged in the radial direction, and methods for manufacturing these members. The hub ring has a great opening ratio to achieve a low pressure loss property and causes substantially no residence of polymer, and the hub ring can be manufactured at a low cost. The supporting plate has high pressure resistance, low-pressure loss property, good directivity of polymer flow and excellent polymer mixing effect, and it is suitable for use as a retainer disposed inside of a filter.

Abstract: A composite membrane comprises an inorganic support having interstices and porous inorganic films of sintered non-metallic particles carried by the support and bridging the interstices thereof. The support is preferably a woven metal mesh, with the films substantially coplanar with the support. The films may be formed by applying a suspension of refractory particles in a polymer solution to bridge the interstices of the support, and heating the films to partly sinter the particles. Since the films are in compression at ambient temperature, any cracks that may be formed by damage to the composite membrane tend not to propagate.

Abstract: A filter unit for a septic tank including a cylindrical filter housing having two chambers therein, a first chamber having a plurality of stacked disc-dam filter units and a second chamber. Each disc-dam filtering unit is provided with an upstream side and a downstream side and the cylindrical housing has an opening in the bottom thereof in flow communication with the upstream side of the disc-dam filtering units. A vertically extending partition is provided to separate the first chamber from the second chamber and the partition includes flow-through openings therethrough of preselected size for controlling the rate of flow from the downstream side of the disc-dam units into the second chamber.

Abstract: A backwashable filtration system comprises a plurality of filter cartridges each consisting of a column of stacked arcaded wafers disposed on a rigid geometric guide rod. The wafers have arcuate portions interconnected by straight portions to form a filtration portion. An upper and lower surface of the filtration portion has grooves disposed therein. The filtration portion is connected, via a plurality of tabs, to a mounting portion having an inner hexagonal cavity and a circular exterior. The inner hexagonal cavity is tightly toleranced to fit onto the rigid hexagonal guide rod so as to preclude rotation of the wafers about the rod. The relationship of the inner hexagonal cavity to the outer filtration portion ensures that the arcs will always align to each other and that the grooves on a top surface of a wafer will be offset from grooves on the bottom surface of an opposed wafer. Integral passages accommodate flow of filtrate to a clean chamber and accommodate the flow of backwash fluid through the stack.

Abstract: A filter for flitrating molten resin of the invention includes: a cylindrical filtering member formed with a large number of projections and recesses; and radially arranged rods in a supporter for supporting the cylindrical filtering member at arc-shaped projected portions, and is constructed such that molten resin material is allowed to pass through the filtering member at arc-shaped recessed portions. In this arrangement, it is possible to enhance the resistance of thermoplastic molten resin filter against filtering pressure as well as to ensure a large filtering area. Further, the filter may be constructed such that the cross-section of the aforementioned cylindrical member is made greater from the upstream side toward the downstream side. By this configuration, the flow rate of molten resin passing through the unit area of the filtering member is made uniform and consequently the collecting capacity of foreign substances is increased.

Abstract: There is disclosed a heat-sterilizable spiral-wound filtration module having an outer shell comprising a cord, fabric or laminate consisting of a heat-resistant rigid first polymer encased within a thermoplastic second polymer.

Abstract: A filter screen structure for a backflushed liquid filter has a screen separating the raw-liquid side of the filter from the clean-liquid side thereof, including at least one row of substantially parallel rods extending along the screen, wherein the screen is threaded between the rods, partially enveloping the rods alternatingly from the raw-liquid side of the filter and from the clean-liquid side thereof. At least some of the rods are provided with substantially circumferential groove-like recesses, facilitating the passage of the liquid from the raw-liquid side via the screen to the clean-liquid side.

Abstract: A device providing for tribochemical regime in the lubrication system of a mechanism comprises a casing (1), a cover (2) with inlet openings (3) and an outlet sleeve (4) for the inlet and outlet of the oil, a non-return valve (5), a relief valve (6), a standard hollow full-flow filtering element (7), a tribochemical package consisting of coaxial perforated shells (8 and 9) enveloped in a filtering material (11), granulated alkaline reagent (12) placed between the shell (9) and the filtering element (7), as well as iodine with which is impregnated the filtering material (11) of the shell (8). The shells (8 and 9) consist of truncated cones with oppositely oriented bases. Their larger and smaller bases, respectively, are secured with tension on the casing of the relief valve (6), the larger base of the shell (9) is secured with tension on the outlet sleeve (4) and inside it is secured, at interference fit, a smaller base of the shell (8).

Abstract: A screw type dewatering machine according to the present invention includes inner and outer sleeves (1, 2), an annular space chamber (3) defined therebetween, a coil-like screw (4) rotatably disposed in the annular space chamber (3), and drain screens (5, 12) disposed on the inner sleeve (1) and/or the outer sleeve (2), and is characterized in thata support ring (16) is attached to the outer periphery of one end of the coil-like screw (4) and is rotatably supported by the outer sleeve (2).

Abstract: A fluid separation device, utilizing tubular or flat sheet membrane materials, bounded on the membrane side of the sheet by a sheet of a porous feed spacer material, and bounded on the support side of the membrane sheet by an optional porous permeate backing material, to facilitate the flow of fluids. The layered assembly is formed into multiple pleated thin flat channels, surrounding a solid center rod mandrel, glued at the ends, wrapped with a porous sheet material, taped, and sealed into a tubular shell. The fluid to be separated flows into one end of the pleated element, and discharges from the opening at its opposite end in a concentrated form. The fluid passes through the membrane in a purified form and discharges from an opening in the side of the tubular shell.

Abstract: An improved spiral membrane and module for cross flow filtration where several of the membrane envelopes are wavelike or corrugated in structure to allow unobstructed flow of the feed to reduce the feed path fouling when used to filter feed containing particulate matter.

Abstract: Disclosed is a hub ring for a filter wherein a supporting member having a plurality of supporting portions is interposed between a pair of keep plates, a supporting plate for a filter wherein a plurality of wave portions extending substantially in the circumferential direction are arranged in the radial direction, and methods for manufacturing these members. The hub ring has a great opening ratio to achieve a low pressure loss property and causes substantially no residence of polymer, and the hub ring can be manufactured at a low cost. The supporting plate has high pressure resistance, low-pressure loss property, good directivity of polymer flow and excellent polymer mixing effect, and it is suitable for use as a retainer disposed inside of a filter.