Abstract: A preferred transmission filter (10) includes a first flange (18) transparent to a laser beam (58) and includes a second flange (20) opaque to the laser beam (58) and meltable upon exposure thereto. The flanges (18, 20) are in registered, abutting relationship with a laser weld bead (62) at the juncture (44) between the flanges (18, 20) to provide a fluid seal circumscribing the filter (10). The preferred filter manufacturing apparatus (12) includes a laser (54) coupled to a robot arm (50) controlled by a programmable logic controller (52). The controller (52) operates the robot arm (50) in order to direct the laser beam (58) through the first flange (18) onto the second flange (20) and along the juncture (44) to form the laser weld bead (62).

Abstract: A filter housing assembly has a tubular standpipe to support successive filter elements within a filter housing closed by a closure plate. A spindle is fixed to the inner surface of the closure plate in position to move into the upper end of the standpipe when the closure plate is in position to close the housing. A top filter support is fixed to the spindle in position to be seated on top of a filter in the housing when the closure plate is in position to close the housing. A skirt extends downwardly from the closure plate to deflect leaks.

Abstract: A drainpipe filter kit for installation on a sink drain, the kit having the parts necessary to install a substitute drain pipe with a filter canister between the sink drain and the sink trap, the kit including a drainpipe segment with end fittings for connection to a sink drain and trap, and a removable canister connected to the pipe segment having a drain spigot and a disposable filter packet. The filter packet includes a dissolvable sanitation tablet, the canister being easily removed after draining for disposal and replacement of the filter packet.

Abstract: A filter cartridge includes a filter housing having a main housing portion and a removable end closure defining a filter element cavity. The main housing portion includes an open annular end having an in-turned annular lip with a series of receiving slots formed in the inner surface of the lip. A filter element is disposed within the housing cavity and includes an end cap with a series of axially-extending drive pins, and an axially-extending stand-off device, where the drive pins are axially longer than the stand-off device. A mounting hub having a central threaded collar for attachment to a base is disposed between the outer surface of the end cap and the lip of the main housing portion. The mounting hub includes a series of orientation through-holes which correspond to the location of the drive pins on the end cap.

Abstract: A method of separating cells from blood by using a filter apparatus having first and second ports and a filter member therebetween having a changeable porosity. The filter member includes a stack of porous polymer sheets that preferably has a gradient of a physical or chemical characteristic in the direction of stacking. This can include a gradient in porosity, hydrophilicity or zeta potential. In a first step, blood is filtered through the apparatus when the filter member is set to a compressive state having a first porosity capable of capturing the objective cells. In a later step, the filter member is then set to a non-compressive state having a second porosity, higher than the first, for recovering the objective cells. The change in porosity results from the enlargement or reduction of the diameter of the pores of the filter member. The method can also include washing the filter member when the member is set to a porosity that is higher than the first porosity but lower than the second porosity.

Abstract: A fluid filter for liquid media with a removable filter insert and a drain opening having a spring-loaded closure element associated therewith. The closure element is held by the filter insert in a closing position that seals the drain opening, and separates from the drain opening when the filter insert is loosened or is removable. The spring is designed as an elongated spring having a U-shaped design.

Abstract: An improved, reduced waste oil filter has a concave housing having a first end, a fluid inlet port and a fluid outlet port. A concave cover is removably and sealably attached to a second end of the housing providing a closed area with which the inlet and outlet ports communicate. An elongated cylindrical disposable oil filter element is supported within the closed area. The filter element has a perforated center tube, a first end of which detachably communicates with the fluid outlet port, the other end of the center tube being closed. The center tube has a filter media there around so that fluid flow into the closed area through the inlet port flows through the filter media and into the center tube to pass out through the outlet port. The filter element has a length greater than the internal depth of the cover so that when the cover is removed from the housing a portion of the length of the filter element extends exteriorly of the cover to facilitate easy removal and replacement.

Abstract: A filter housing assuring serial filtration of a liquid through plural filter cartridges and enabling flushing without requiring removal of the filter cartridges. The filter housing has a cap including a liquid inlet, a filtered liquid outlet, a flush liquid outlet, and internal passages. The filter cartridges are held within a canister which is pressed against the cap and constrained against rotation with the cap. A retaining member surrounding and bearing against the canister threads to the cap. The canister is divided into chambers, and has passages in its floor arranged to enable serial transfer of liquid from one chamber to the next. Flushing employs liquid introduced under normal pressure. Passages leading to the flush liquid outlet enable flushing to proceed when the flush liquid outlet is opened. At other times, filtered liquid will pass through passages leading to the filtered liquid outlet.

Abstract: A canister oil filter for an internal combustion engine comprising a plurality of filter elements with seals on each end of each filter, the filters being stacked end to end within the tubular housing, an oil inlet and outlet disposed in one end of the canister and a spring biased retainer collar, which keeps pressure on all of the end seals, disposed in the same end of the canister as the oil inlet and outlet with the bias of the spring and the force from the impinging incoming oil acting generally in the same direction, to form a canister with improved filter sealing.

Abstract: A filter assembly particularly suited for a gasoline fuel pump includes a reusable filter element. The filter assembly has a surrounding housing and a base portion. The base portion including a surface for supporting the filter element and a central stand pipe having a thread formation for engaging an outlet tube of an adapter mounted to the top of the housing. Engagement of the stand pipe to the outlet tube pressing a sealing surface of the housing to a sealing surface of the adapter. The filter element can be retained by a retaining ring threaded onto the stand pipe or by a retaining ring assembly which functions to retain the filter element and also to provide sealing surfaces between the housing, the retaining ring assembly and the adapter. The base can also be made unitary with the housing.

Abstract: The water filter and water filter assembly for swimming pool cleaning machines of this invention has a hollow outer housing with a top, bottom, and sidewalls. An electrical pump motor is mounted within the outer housing and has an upper end. An output shaft on the pump motor extends upwardly therefrom and has an impeller mounted thereon which is positioned adjacent to and inwardly from a water discharge port in the top of the outer housing. The pump is positioned in spaced relationship with respect to the outer housing. An opening is located in the bottom of the outer housing to receive a water filter assembly. The filter assembly includes a filter housing which includes space U-shaped ends having top and bottom edges with an open U-shaped opening extending from the top edge and extending downwardly in the U-shaped ends towards the bottom edge thereof.

Abstract: A holding device for a filter element is disclosed. More particularly, the holding device includes a body having upper and lower surfaces. The lower surface is sized and shaped so as to engage an end of an associated filter element. The holding device also includes a compressible member, which is positioned on the upper surface of the body, and a connecting mechanism for directly and movably connecting the body to a body of at least one other identical holding device.

Abstract: A filter/sanitizer has a filter housing, provided with a fluid inlet and a fluid outlet, a filter cartridge with a hollow interior, located within the filter housing, and a sanitizer cartridge, with a hollow core, positioned within the hollow interior of the filter cartridge. In a preferred embodiment, the sanitizer cartridge is constructed with an outer fluid-permeable member and an inner fluid-permeable member, the outer and inner members substantially enveloping a space therebetween, with the space containing a sanitizing media bed. In operation, as fluid enters the filter housing through the fluid inlet, substantially the full flow of fluid passes through the filter cartridge, through the sanitizer cartridge and around the sanitizing media contained within the bed, into the hollow core of the sanitizer cartridge, and out of the filter housing through the fluid outlet.

Abstract: A full-flow filter is disclosed and which comprises a screen or element housed between two body halves. The construction of the filter is such that fluid to be filtered enters and exits the filter body from the same side thereof.

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: A fecal parasite concentrator which has a cylindrical body (20) with connections for a sample vial (24) on one end having a protective recess (27) for receiving the sample vial and a centrifuge tube (28) on the other. An integral filter (36) is disposed within the body at right angles coaxially covering the cross sectional area of the hollow body. The filter contains a series of closely spaced square openings for filtration of a liquid diluted fecal specimen. A hollow stem (40) with truncated end (44) extends upwardly from the filter having orifices (46) which permit air to pass therethrough when the diluent specimen flows through the filter.

Abstract: A filtration apparatus for deadend filtration is provided which is formed from multilayer presealed elements and monolayer elements that are insert molded together. The device is provided with a feed port, and a filtrate port. The sealing configuration of the presealed elements and the seal provided by the insert molding step effect a seal configuration that causes a feed liquid to be filtered to form a filtrate such that the filtrate is not mixed with the feed.

Abstract: A retaining ring assembly for a reverse osmosis filter cartridge includes a removable retaining ring inserted into the cartridge housing after insertion of the cartridge, the retaining ring including a demountable locking connection with the housing. When the housing is subsequently removed to replace the cartridge, the retaining ring forces the cartridge from its tightly sealed connection to the end cap or header, allowing the cartridge to be easily removed with the housing. Preferably, the housing includes a special brine ring adapted to cooperate with a conventional cartridge brine seal, the brine ring providing connection for the retaining ring and defining with the housing a brine flow passage.

Abstract: An engine oil filter has an upper cap and a lower case or plate, which are engageable with each other through a projecting portion and a groove portion. In one mode, the projecting portion is inserted into a first longitudinal groove wall and moved along a contact surface of a first skewed groove wall, whereby the cap and the case are moved and fitted together in an axial direction. As axial movement caused by relative rotation between the cap and the case takes place, an O-ring is tightly fitted therebetween at a fixed seal position. This engagement process applies no excessive force to the O-ring so that a sealed state of high reliability is provided.

Abstract: Apparatus for filtering industrial liquids and gases by separation of suspension particles based on the principle of radial stationary filtering. The filtering apparatus comprises a cover (9), a body (6) and a base (19) whose volume is adjustable by altering the length of its body (6). A threaded rod is provided for sealing the unit and also for providing a sealed joint between a filter element (4), the cover (9) and the base (19). The threaded rod (2) can be tightened and untightened using a butterfly handle (11) without the use of other threaded connections. Depending on the liquid or the gas to be filtered, the filter medium will be made from towel-type paper or felt. The filter elements (4) come in a single size and a spacer device (22) is used to provide different lengths. The liquid or gas to be filtered is conveyed by a conical transmission conduit (16) past a circular rib (13) into the outer peripheral zone of the filter chamber (5).

Abstract: A spin-on type filter assembly for lubricating oil includes a cast aluminum housing which contains a replaceable annular filter element. The filter element is resiliently retained in the housing by compressing a gasket thereon with a threaded end cap which closes one end of the housing. The housing includes a unitary front end wall with a plurality of inlet ports surrounding an axially positioned outlet port. In order to provide a secure coupling with the engine, an externally and internally threaded steel stud is threadably mounted in the outlet port for threadably coupling with the engine.

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 dual media fuel filter which combines the functions of filtering the fuel passing from a fuel source to a lift pump, and the function of filtering the fuel passing from the lift pump to the fuel injectors. The present invention provides a fuel pump with distinct primary and secondary fuel filter cartridges which are compression loaded into a self-contained oil filter canister adapted for threaded attachment to an engine block. The primary filter cartridge is provided to filter fuel drawn under suction from a fuel source into a lift pump, and is therefore provided with a relatively coarse filtering medium to allow for adequate fuel to pass therethrough even under negative pressure and cold temperature conditions. The secondary filter cartridge is provided with a relatively fine filtering medium to filter the fuel passing from the lift pump and into the fuel injectors.

Abstract: A reusable fluid filter assembly includes a cylindrical housing, a top plate assembly, a top plate attachment member, and a replaceable coreless filter element. The housing has means for sealingly engaging the housing to the top plate, and a hollow central core having an open first end and being connected to the closed end of the housing at the second end. The central core has a plurality of fluid outlet perforations. The top plate has a rim, fluid inlet means and fluid outlet means extending through the top plate. The top plate attachment member has a tubular shape, and a fluid outlet port extending through it. The coreless filter element having annular end caps on first and second open ends is disposed in the housing. The fluid inlet means of the top plate are in fluid communication with a fluid inlet chamber defined by the filter element and housing. The central core extends into the first open end of the filter and the hollow cylindrical chamber of the filter element.

Abstract: A replaceable filter cartridge for use in a fluid filter assembly includes a substantially cylindrical filter element including a pair of oppositely disposed filter element ends. A first endplate is bonded to one of the filter element ends so as to close the end and prevent fluid leakage therethrough. A second endplate is bonded to the opposite filter element end so as to close the opposite end and prevent fluid leakage therethrough. The second endplate includes an outer annular wall which is sized so as to create a noticeable distance of separation between the second endplate outer wall and the outer surface of the filter element and thereby define an annular clearance space therebetween. The outer wall of the second endplate is annular and substantially concentric with the filter element and provides a lip or free edge for the snap-on assembly of a closing lid member.

Abstract: Flow inverter arrangements are provided for utilization in spin-on, liquid filter cartridges, such as lubricating oil filter cartridges and the like, wherein the filter cartridge structure normally used for "inside-out" flow is reversed to accommodate "outside-in" flow. Each embodiment of the invention utilizes a cylindrical wall disposed within the hollow core of a filter media, in spaced relation thereto, so as to define an annular space which is aligned with the input ports in the end plate of the housing. A filter media has a first end cap within an opening aligned with the central core so that liquid which is passed from the annular space and through the filter media can pass through the opening in the end cap and to the central port which is aligned with the hollow core of the filter media, but isolated from the filter media by the interior wall.

Abstract: A filter element has an internal coil spring which is magnetized to remove magnetizable particles from a stream of lubricating oil prior to the oil passing through an annular filter media. The annular filter media is part of a cylindrical filter element which includes an end cap that closes one end of the filter element and an internal sleeve which defines a hollow core. The filter element is disposed within a filter container having a cylindrical wall and a round end wall. The filter container is closed at one end by an end plate overlain by a cover plate. Lubricating oil to be filtered enters the container and accumulates in an annular space between the filter element and in an end space between the end cap of the filter element and the closed end of the housing prior to passing through the filter media.

Abstract: A reusable oil filter assembly adapted for use in filtering the lubricating oil of an engine configured to receive an oil filter, including a filter housing having an open end and a closed end, a filter mount disposed between the filter housing and the engine for receiving the unfiltered oil from the engine and returning filtered oil to the engine. The filter mount includes a first plate, a second plate, and an anti-drain back seal disposed between the first plate and the second plate. The anti-drain back seal prevents both the oil disposed in the engine from flowing out into the filter assembly and the oil disposed in the filter assembly from flowing into the engine when the engine is turned off. The first plate, the second plate and the anti-drain back seal arefittingly, rather than integrally, mated together, thus facilitating service, repair and replacement of the assembly.

Abstract: A sea water strainer for use with marine craft includes a reservoir forming member disposed intermediate two ends portions. The end portions are formed with inlet and outlet fluid channels which are selectively accessible and blockable to direct the flow through the strainer. Further, an arrangement for mounting the strainer is provided with inclined bores through which bolts may pass with their operational interface directed angularly upwardly for easy access by conventional tools.

Abstract: A fuel filter comprises of a adapter and a filter element within a can. The adapter provides a series of valves which are opened and closed by the attachment and detachment of the filter, thereby preventing spillage from the fuel pump when the filter is removed for replacement.

Abstract: A reusable fluid filter assembly is provided, comprising, a cylindrical housing having external threads adjacent its open end; a top plate assembly having internal threads and indexing means for preventing rotation of the top plate with respect to a filter mounting base after the filter is positioned; a top plate attachment member having a fluid exit port extending through it and internal threads for threading onto corresponding external threads on the filter mounting base; and a replaceable filter element. A sealing ring in an annular channel adjacent the external threads of the housing seals the filter assembly when the housing is threaded into the top plate. The top plate attachment member secures the top plate assembly to the filter mounting base and also seals against the open end of the filter element.

Abstract: A filtering appliance for cleaning cooking oil in a food fryer is designed and dimensioned for single-handed portable use in "hand-gun" fashion. The appliance has an elongate casing means with a hand grip at one end adjacent a pump-and-motor assembly. An intake nozzle conducts oil to be cleaned to a cartridge style filter made by stacking annular elements cut from a commercially available filter material of fibrous mat forming matrix holding particulate filtering media. The filter is axially spring loaded to accommodate yielding of the filter material. The appliance discharges into the food fryer through a duct outside the casing means. Thus, the oil is recirculated to achieve cleaning.

Abstract: Apparatus for removing air bubbles from blood and from a dialysate solution are described herein. In one cassette-style embodiment of a blood debubbler, the debubbler includes front and rear covers, a fluid circuit board between the front and rear covers and defining a blood chamber between the fluid circuit board and the front cover and an air chamber between the fluid circuit board and the rear cover, and a microporous membrane separating the blood chamber from the air chamber. A support means is provided for supporting the microporous membrane from the air side of the membrane. A pressure sensor is provided within the front and rear covers for measuring the blood pressure in the blood chamber. The debubbler has a blood inlet port and a blood outlet port for conducting blood to and from the blood chamber. An air port is provided in communication with the air chamber, which allows for air passing through the microporous membrane to escape.

Abstract: A return filter for hydraulic fluids comprises a filter head attachable to a container for fluid, a filter pot arranged on one side of the filter head, a cover releasably arranged on the other side of the filter head, a filter element arranged so as to extend continuously through the filter head and the filter pot, at least one inlet formed on the filter head for the returning fluid, an air port formed on the filter head, and a ventilation filter inserted into this port. Filter head, filter pot and filter cover consist of plastic; a hose nipple integral with the filter head is formed at the inlet for the returning fluid. The air port is surrounded by a housing which is integral with the filter head and is closable by a cover carrying the ventilation filter. The walls of the housing are provided with slots which are open towards the cover. On the one hand, these slots make provision for air to pass through and, on the other hand, they allow the cover to be releasably clipped into the housing.

Abstract: Disclosed is a filter installed in a water-flowing path of a washing machine. The filter improves the washing effect and protects the water-flowing path in the washing machine. The filter can be easily assembled and disassembled outside the washing machine. The filter has a body being fixed to and penetrating through the housing of the washing machine, a mesh member inserted in the body to filter the washing liquid passing therethrough, a locking lid assembled integrally with and relatively rotatable to the mesh member, and an annular packing tightly wound on the mesh member to prevent leakage between the body and the mesh member. A user can insert the mesh member into the body, and then rotate the locking lid so that the first locking protuberances of the locking lid are engaged with the second locking protuberances, thereby the mesh member is assembled in the body.

Abstract: Filtration chamber consisting of a cylindrical vessel having a bottom plate (1a) forming a support for the filtering system (11), this latter comprising a filter sheet (11a) and a filter netting bed (11b), both anchored to the bottom plate (1a). The filter sheet (11a) and the filter bed (11b) are fixed at their periphery onto an anchor ring (10), provided with a bayonet system (10a, 1c) for rapidly locking it onto the bottom support plate (1a). The filter sheet (11a), in the form of a punched plate or of a gate, and the filter bed (11b), in the form of a wire net, are fixed to the anchor ring (10), along its entire periphery, by welding. Three O-Ring type toroidal sealing gaskets (13, 15, 16) are positioned between opposed horizontal surfaces--of the bottom plate (1a), of the anchor ring (10), and of a rib (14) of the chamber wall (2)--so that the operation to for closing the bottom (1) of the chamber causes the simultaneous tightening of all the gaskets.

Abstract: A liquid filter includes a housing and a filtering bag supported within the housing to remove soiled matter from processed fluids being filtered. The filter bag includes a rim and a pouch made out of a flexible material which is secured to the rim by a series of circumferencially spaced intermitted bonds. The bonds capture horizontal fibers of the filter bag as well as vertical fibers, thus resulting in a stronger bond and making it less likely a rupture will occur at the bond when stress is applied to the filtering bag, such as occurs when the bag is being removed from the housing during bag change over.

Abstract: A filter housing assembly for the filtration of liquids at high temperature and high pressure and for reduction of particles having a housing for a filter cartridge, a flanged cap, that is slidingly inserted into the housing, and having a cap nut for fastening and tightly sealing the cap to a lip on the housing. The interface housing-cap having grooves, with centerlines offset in opposite directions, for receiving sealants and cone-shaped surfaces on the flange and the lip opposing flat surfaces on the cap nut and the flange, respectively, for achieving a tight seal. The housing having a bottom with a concentric cylindrical recess with a concave-convex edge for receiving the nose of the cartridge. The housing also having a spacer for holding the upper part of the cartridge concentric for efficient filtration.

Abstract: Removable filter cartridge assemblies (10) for housings (28) having a removable member (101, 130) to provide access to the interior (102, 136) of the housing and an inlet (108, 134) and an outlet (109, 135) to and from the interior thereof (102, 136) comprising at least one filter cell (12) through which fluids are passed for filtration, the cell having a central aperture (18) therethrough for the passage of fluid, separate from the fluid within the housing; opposed disks of filtration media (16), spaced apart and defining upper (16U) and lower (16L) surfaces of the cell emanating radially from the central aperture; and, an outer peripheral edge (14) circumscribing the cell; first and second retainer ring members (22) securably disposed on the upper and lower surfaces of said filter cell, open to and concentric with the central aperture, said first retainer ring members being contiguous with the outlet of the housing; and lifting means (42, 50, 80, 90) communicable with one of the retainer ring members for mo

Abstract: A filter assembly includes a base and a filter cartridge supported on the base. The filter cartridge includes a filter element mounted within a cup-shaped housing having a circumferentially extending wall and an open end. In the preferred embodiment, a collar circumscribes the housing and includes a set of cooperating bayonet lugs which cooperates with a corresponding set of bayonet lugs on the base, permitting easy removal of the filter when the filter is changed by merely rotating the collar one quarter of a turn. In the alternate embodiment, the lugs are included within the housing itself and cooperate directly with lugs on the base.

Abstract: A device for separating contaminants out of the lube oil of an internal combustion engine is provided which includes a filter element, a centrifuge rotatable by means of the lube oil flowing through it, and at least one supply passage for lube oil to be cleaned and at least one drain passage for the cleaned oil. The filter element and the centrifuge are arranged in a common, closable housing with at least one of the filter element and the centrifuge being removable from the housing when the housing is open. The filter element and the centrifuge are arranged in the housing in vertical alignment and a single cover covers the common housing.

Abstract: A filter and a filter and valve assembly primarily intended for use in fluid analyzer systems for particulate or coalescing filtration of fluids includes a filter assembly having a base element with all port openings in the base and with the port openings arranged so that the assembly can be mounted in a variety of selected positions. An integrally valved filter assembly is also disclosed and is provided with a rotary valve that can control flow between a filter chamber and multiple supply and/or discharge ports.

Abstract: A filter includes a case, filtering material housed within the case, a cover which covers the open end of the case and is non-rotatable relative to the case, and an annular fastener clamping the cover to the case. The case includes a large-diameter portion at an open end of the case, the large-diameter portion including a convexity forming an engagement tab. The cover has a concavity into which the convexity is received to prevent the cover from rotating relative to the case. Moreover, the cover includes a screw thread on the outer periphery thereof. The annular fastener has a screw thread on the inner periphery thereof mated with the screw thread on the outer periphery of the cover. On the other hand, the annular fastener has a small-diameter portion engaged with the large-diameter portion of the case by which engagement and mating of the screw threads the annular fastener secures the cover to the case.

Abstract: An oil filter assembly for an internal combustion engine includes a body (31) which provides inflow and delivery passages and an attachable filter element container (45) which is attached to the body by a screw-thread at its open end to enclose a cylindrical pleated paper filter element (41) which is located by a perforated support tube (35) carried by the main body, the filter element (35) is sealed at one end against the body and is axially positioned by a spring (38) acting between the closed end of the container and a disc-like closure member (42) which thereby maintains engagement between one end of the filter element and the main body and sealing closure of the other end of the filter by the closure member sealing, the radial and axial compression of the filter element being limited by the support tube.

Abstract: A fecal parasite concentrator which has a cylindrical body (20) with connections for a sample vial (24) on one end and a centrifuge tube (28) on the other. An integral filter (36) is disposed within the body at right angles coaxially covering the cross sectional area of the hollow body. The filter contains a series of closely spaced square openings for filtration of a liquid diluted fecal specimen. A hollow stem (40) with truncated end (44) extends upwardly from the filter and a number of geometrically shaped orifices (46) permit air to pass therethrough when the diluant specimen flows through the filter.

Abstract: Disclosed is a leukocyte-removing filter device comprising (a) a casing having an inlet for blood and an outlet for leukocyte-removed blood, which are both located in a top portion of the casing, and (b) a filter medium disposed in the casing so as to divide the internal space of the casing into an inlet-side chamber communicated with the inlet and an outlet-side chamber communicated the outlet.

Abstract: Water to be purified swirls about a source of ultraviolet radiation to kill any microorganisms contained therein and flows through a carbon filter cartridge mounted about the ultraviolet source to remove any chlorine and particulate matter. The outflow from the carbon filter is again subjected to ultraviolet radiation to kill any microorganisms entrained in the water emanating from the carbon filter. An ozone generator may be incorporated to entrain ozone with the inflowing water to enhance killing of any microorganisms present and to oxidize any undesirable compounds. The cartridge filter has its annular support member at one end disposed adjacent a first annular ridge to establish an annular seal between the support member and the first annular ridge. An axially moveable disk includes a second annular ridge disposed adjacent the annular support member at the other end of the cartridge filter to establish an annular seal therebetween.

Abstract: A pre-septic tank or washing machine output filter apparatus for the improved removal of contaminants from pre-septic fluids. A filter apparatus defining a fluid filter chamber has an input port and an output port. A fluid deflector or disperser is mounted to deflect substantially all of the contaminated fluid entering the filter apparatus. A filter is mounted within the filtering chamber and has a closed lower portion and an upper portion for receiving the fluid dispersal apparatus. Fluid entering the input port is dispersed by the deflector apparatus through an upper portion of the filter, thence through the fluid filter chamber to the fluid output port. Contaminants collected in the upper portion of the filter from the deflected fluid will eventually be caused by gravity to fall to the lower, closed portion of the filter where these contaminants will remain collected until the filter is emptied.

Abstract: A pipe bracket portion of a freight brake control valve having an improved filter arrangement. The pipe bracket portion has a first side with a service portion and an emergency portion mounted thereto. The pipe bracket portion has a second side with a brake pipe, a brake cylinder, a emergency reservoir and an auxiliary reservoir thereto. The pipe bracket portion is provided with a cavity designed for containing a generally cylindrical filter therein. A retaining nut secures the filter in the cavity and provides a seal between the outer circumference of one end of the cylindrical filter and the pipe bracket portion. A first cavity portion and a second cavity portion are thus formed within the cavity in which the first cavity portion houses the cylindrical filter, and the second cavity portion has at least one radial port for delivering air.

Abstract: A laminated filter material for removing foreign materials from gas or liquid with high precision, its fabricating method and a filter using a laminated filter material are described. The laminated filter material comprises a support member of porous metal and a particle layer of fine particles laminated on a surface having asperities of the support member, by immersing the support member in a suspension of the particles without a binder, and evacuating the suspension through the support member. The method for fabricating includes the steps of preparing a suspension of particles finer than the average pore diameter of support member without using a binder, immersing the support member, and evacuating the suspension through the support member.