Abstract: Spent pyrophoric reaction catalyst from a reaction mixture is removed safely, cheaply, and rapidly using a single plate pressure filter. After hydrogenation, the reaction mixture is decanted, the desired hydrogenation product is removed, and catalyst-rich material which settles at the bottom of the vessel is delivered to a single plate pressure filter fitted with a filter bag 40 of permeable material. The spent catalyst is retained in the filter bag 40 and stored under water awaiting recovery. The filter apparatus 1 comprises a container having a domed base 2, a generally cylindrical sidewall 3 terminating in an upper rim 4 closed by a lid 5 having lifting lugs 6. The lid 5 is fixed in pressure-tight engagement with the sidewall 3 by flange engaging screw clamps 7 and an embedded polytetrafluoroethene gasket 8. The filter bag 40 is held in position by a band 11 and may be readily released for removal of the spent catalyst material. The bag 40 may be reused.

Abstract: The present invention provides for a multiple well filter plate and method of producing same, the multiple well filter plate comprising a molded plate and a filter sealed via an adhesive, the method particularly adapted for producing multiple well filter plate having substantial well densities and small volume sample wells.

Abstract: A combination filter assembly having a plurality of filter sieves positioned in parallel one after the other in the direction of flow. The filter sieves are stretched and mounted in housing elements to form filter elements. The housing elements are in contact with each other by means of top and bottom bearing faces, and are maintained in a stack. The filter elements have a cylindrical shape with annular bearing faces, wherein one bearing face includes a centering male coupling and sealing formation, and the other bearing face includes a corresponding centering female coupling and sealing formation.

Abstract: The fuel filter housing (12) is formed of inlet segment (14) and outlet segment (16) that are telescopically mounted to each other, with a seal (44) positioned between the mounting flanges (38) and (40). Valve (60) is maintained displaced from its valve seat (58) by valve actuator (66), by the valve actuator engaging the perimeter of the filter (34). When the outlet housing segment (16) moves away from inlet housing segment (14), the filter and the valve actuator (66) also move, allowing the valve the close. The amplitude of movement of the valve (60) toward and away from its seat (58) is smaller than the sealed telescopic movement of the housing segments, so that the valve closes before the segments separate, thereby limiting the amount of fuel lost from the fuel filter assembly.

Abstract: A method of separating a cell-containing sample into a substantially cell-depleted portion, and a cell-containing portion comprising at least one of a stem cell, a lymphocyte, and a leukocyte comprises a step in which the sample is received in a vessel with at least one flexible wall. In another step, an additive and particles are added to the sample, wherein the additive substantially binds to the at least one of the stem cell, lymphocyte, and leukocyte, and the particles and wherein the particles substantially bind to the at least one of the stem cell, lymphocyte, and leukocyte, and the additive, thereby producing a cell-containing network. In a further step, the network is separated from the substantially cell-depleted portion by applying a magnetic force.

Abstract: An oil strainer comprises upper and lower partial bodies, made of synthetic resin, joined together to form a roughly tube-shaped strainer main body, the interior of which is provided with a filter. The oil strainer has a flange section for attachment with bolts, and the flange section is provided with at least one bolt hole which passes through the interior of the roughly tube-shaped strainer main body. With this structure, it is possible to provide an oil strainer which can be installed on a small installation surface, which is able to reduce resin fatigue, and which can prevent impairment of the seal due to loosening of installation members.

Abstract: The present invention relates to the latch-assisted lid extractor. The present invention includes a canister and a lid connected to the canister via a latch assembly. The latch assembly includes an over-center lock to removably secure the lid to the canister. Additionally, the latch assembly can be moved from a first position sealing the canister with the lid to a second position urging the lid away from the canister. The present invention provides a mechanism that can both securely latch or fasten a lid to a canister and at the same time assist in removing the lid from the canister to enhance ease of operation.

Abstract: A biological fluid filter is disclosed for use in a biological fluid processing system. The biological fluid filter comprises an inlet section, with said inlet section comprising a top wall and a downstanding peripheral side wall, an outlet section complimentary in shape and bonded to said inlet section to form a chamber, said outlet section comprising a bottom wall and an upstanding wall and a filter element mechanically held in place between said inlets section and said outlet section to divide said chamber into at least an inlet chamber and an outlet chamber, said inlet chamber and said outlet chamber also in communication with a vent embedded in said filter element.

Abstract: A sealed filtration system includes a housing, having two chambers, that can be submerged. One chamber houses a plurality of subchambers in which various filter media are located, and the other chamber houses a submersible pump or additional filer media. A drain chamber and port is also defined within the housing for each chamber. An external pump can be to the housing.

Abstract: A filter housing for retaining a roomside replaceable filter is generally provided. In one embodiment, the filter housing includes one or more sidewalls defining an interior volume. Each sidewall includes a first section and an adjacent second section sealingly coupled thereto. A sealing member is coupled to the second section and extends into the interior volume. The sealing member is adapted to provide a gas-tight seal between with a replaceable filter and the filter housing. A hole is disposed through at least one of the first or second sections. The first section is sealed to the second section around a perimeter of the hole.

Abstract: A single or multiwell plate using membrane, preferably an ultrafiltration membrane to filter selected solutes from a liquid is disclosed. In particular, a preferred construction and method of sealing the membrane to the interior of the well so as to form an integral seal between the top portion of the well and the bottom portion is disclosed. The preferred method is to use a heat seal device which secures the filter to the underdrain portion of the device.

Abstract: A refrigerant filter, attachable to automotive air-conditioning systems, for removal of debris from air-conditioning refrigerants. The filter media is contained within a two-part hollow body for flow-through filtration of the refrigerants. The first and second parts of the hollow body are sealingly and removably attachable to one another to easily gain access to the filter media, which permits replacement of the filter media without removal of the filter body from the refrigerant line. The apparatus includes a first and second filter media, in which the second filter media prevent transfer of portions of the first filter media into the air-conditioning system.

Abstract: A filtration device for separating concrements, fragments or other body material from liquids which are processed by means of a lithotripter connected to a suction device equipped with a peristaltic valve and sucked out of body cavities. The device has a functional zone having an inlet zone connected at one end to the lithotripter, and an outlet zone connected to the suction device. There is a collection zone mounted on the functional zone and connected to the other end of the inlet zone. A filter element is disposed between the functional zone and the collection zone, so that body material processed by the lithotripter will be deposited in the collection zone, and the filter element will separate the body fluids collected by the lithotripter from the body material.

Abstract: A pressure vessel comprises a top wall, a bottom wall, a side wall extending between the top wall and the bottom wall, and a chamber formed by said walls, an inlet port extending through one of the walls for introducing fluid to the pressure vessel, an outlet port extending through one of the walls for removing fluid from the pressure vessel, a pressure gradient member located within the chamber of the pressure vessel through which fluid passing through the pressure vessel flows as the fluid passes through the pressure vessel, the pressure gradient member including an outlet port, and a flexible resilient tube attached to and extending between the outlet port of the pressure gradient member and the outlet port of the pressure vessel for mounting the pressure gradient member within the chamber formed by the walls of the pressure vessel and for connecting the outlet port of the pressure gradient member to the outlet port of the pressure vessel and for providing substantially uniform support of a load on the pre

Abstract: A strainer basket is used in conduits or fluid systems and includes a non-metallic strainer basket in which a bio-cide is disposed to combat algae and fungal buildup along the surface of the basket and/or in the openings of the basket.

Abstract: A caged filter cartridge assembly has a pair of coaxially spaced-apart end plates, and a number of tubular filter cartridges extending between said end plates. These end plates include seat recesses having a coaxially disposed retaining ring establishing an annular terminal lock edge. The filter cartridges include end caps at each opposed end thereof which are received within respective ones of said seat recesses. The end caps have at least one annular lock ring which is forcibly engaged with the terminal annular lock edge of the retaining ring so as to join the end cap, and thus said filter cartridge, to the end plates.

Abstract: An apparatus for use with an array of liquid specimen containers having open upper ends includes a panel structure having an array of openings corresponding to the array of liquid specimen containers such that the open upper ends of the containers will be aligned with the openings upon placement of the panel structure over the containers in an upright engagement with the containers. The apparatus further includes filter material stretched across the openings so as to extend across the open upper ends of the containers in overlying abutment with the open upper ends of the containers when the panel structure is in the upright engagement. In this arrangement, liquid contents of the containers can flow downward through the filter material when the panel structure and the containers are together moved from their upright engagement to an overturned engagement inverted from their upright engagement.

Abstract: A hollow fiber membrane cartridge comprises a bundle of a plurality of hollow fiber membranes, both ends of which are fixed by adhesion, a cartridge head fixed at the periphery of the bundle at one end so as not to permit the passage of liquid either in or out, and a bottom ring fixed at the periphery of the bundle at the other end so as not to permit the passage of liquid either in or out, wherein the cartridge head and the bottom ring are not connected and fixed but are separated, the hollow portion at the end of each hollow fiber membrane on the cartridge head side is open, the hollow portion at the end of each hollow fiber membrane on the bottom ring side is sealed, and a plurality of through-holes are provided in an adhesion and fixation layer on the bottom ring side.

Abstract: A water filter for recreational vehicles (RV) is provided which includes a ceramic filter element having a radial flange attached thereto. The flange facilitates filter assembly and replacement of the filter element in the filter housing. The method of use describes a quick and easy method of replacing the filter element which is advantageous to unskilled persons in assembling and attaching the water filter to the RV.

Abstract: Electrokinetic devices having a computer for correcting for electrokinetic effects are provided. Methods of correcting for electrokinetic effects by establishing the velocity of reactants and products in a reaction in electrokinetic microfluidic devices are also provided. These microfluidic devices can have substrates with channels, depressions, and/or wells for moving, mixing and monitoring precise amounts of analyte fluids.

Abstract: The invention relates to a filter for fluids, comprising a plastic supporting body for supporting a filter material. The outer surface of the filter is provided with a pump connection piece, which has a lower end extending in an inner space of the filter, which exhibits an inlet opening. The supporting body is composed of a first part comprising the pump connection piece and of at least a second part, both parts being movably linked to each other through a hinge section so that the at least second part can be positioned angularly in relation to the first part, along with the filtration material, and the first and the at least second parts being initially aligned in a same plane. A locking device is provided to lock the second part in the angular position in relation to the first part.

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

Abstract: A sewer basket and its support are to be positioned at any selected level within a vertical sewer pipe having an interior surface and an opening, of reduced size or not, at street level. The basket support is secured to the interior surface of the sewer pipe to receive the basket that includes a plurality of filter units adjacently and releasably resting on the basket support. Each filter unit is so sized as to get through the sewer opening while being in a substantially horizontal orientation. Each filter unit includes a frame, a filter screen secured to and extending across the frame, and a handle device accessible from the pipe opening to properly position, place and retrieve the unit on and from the basket support respectively. The basket support includes an intermediate support having a generally flat lattice shape that abuttingly rests thereon and that abuttingly supports the filter units.

Abstract: A filtration device for separating concretions, fragments or other body material from liquids which are processed by means of a catheter connected to a suction device equipped with a peristaltic valve and sucked out of body cavities. The device has a functional zone having an inlet zone connected at one end to the catheter, and an outlet zone connected to the suction device. There is a collection zone mounted on the functional zone and connected to the other end of the inlet zone. A filter element is disposed between the functional zone and the collection zone, so that body material processed by the catheter will be deposited in the collection zone, and the filter element will separate the body fluids collected by the catheter from the body material.

Abstract: Electrokinetic devices having a computer for correcting for electrokinetic effects are provided. Methods of correcting for electrokinetic effects by establishing the velocity of reactants and products in a reaction in electrokinetic microfluidic devices are also provided. These microfluidic devices can have substrates with channels, depressions, and/or wells for moving, mixing and monitoring precise amounts of analyte fluids.

Abstract: A single or multiwell plate using membrane, preferably an ultrafiltration membrane to filter selected solutes from a liquid is disclosed. In particular, a preferred construction and method of sealing the membrane to the interior of the well so as to form an integral seal between the top portion of the well and the bottom portion is disclosed. The preferred method is to use a heat seal device which secures the filter to the underdrain portion of the device.

Abstract: A filtering chamber for a set for the administration of fluids is provided. The chamber includes a housing providing a passageway for the fluid in the administration set. Within the chamber is a filter of screen which filters the fluid flowing through the housing. The filter or screen is attached to the housing during molding of the housing without the use of bonding agents, resulting in a chamber component which may be produced automatically and economically.

Abstract: An oil reservoir for vehicle transmissions includes an oil pan, cover, and filter cartridge which are manufactured as separate components. The cover 14 is attached to the pan 12 preferably with a snap-fit connection. The filter cartridge 16 is releasably secured in position between the cover 14 and pan 12 so as to enable the module 16 to be installed and removed without having to disconnect the cover 14 from the pan 12.

Abstract: A biological fluid processing or fluid filtration system is provided having novel open and closed loop processing systems wherein the gases transferred into and out of the system during processing pass through a porous medium in upstream and/or downstream gas inlet or outlet housings or vents in a manner which precludes the fluid being processed or filtered from ever contacting the housings or vents. Each housing or vent is separated from the fluid by a column of gas in its respective transfer line. The upstream gas inlet housing or vent is in communication with the unfiltered biological fluid, and the downstream gas inlet housing or vent is in communication with the filtered biological fluid.

Abstract: An apparatus and a method for separating particulate matter from a fluid, wherein the apparatus includes a specimen container, a porous arrangement positioned in a housing and suitable for collecting particulate matter in the liquid on a collection site, and a pump. The housing includes a first portion having elements that improve fluid flow through the housing and elements that decrease the porous arrangement retention characteristics of the portion. The housing also includes a portion having elements that increase the porous arrangement retention characteristics of the portion.

Abstract: An ultrafiltration device has a ported reservoir body, and a filter membrane sealed to the body along a closed contour surrounding the port(s) to provide a large area filtered outflow path. A frusto-conical end provides hydrostatic deadstopping with little or no wicking, greatly enhancing recovery time and efficiency. Methods of using the device rapidly isolate a predetermined amount of a desired retentate in the distal portion of the tube, and are also useful for quantitative transfer of smaller molecules and for multi-step processing of sample arrays Linear array strips of such chambers may be formed by bonding together mating halves with filter areas over the chamber ports. The vessel may include a rib to guide and orient filter during assembly, and/or a ledge or recess to engage and align the filter, assuring that the filter is precisely positioned and does not wander during manufacture and bonding.

Abstract: A drip chamber (1) for body fluid and discharge kits, includes a hollow tubular external closure (2) with a connector (4,5,6) formed at a first end for an outward fluid-flow connection to an external circuit and a second open end (3) arranged opposite to the first end, and a monolithic filtering element (7), formed of a cylindrical filtering body (8) with a first end supported by the connector bottom (4), and of a plug (10) with an inward fluid flow tube (11) monolithically attached to a second end of the cylindrical filtering body (8) and hermetically attached to the second end (3) of the hollow tubular external closure (2).

Abstract: A bacterial fluid filter includes a filter element supported by a backing member. The filter element and backing member are sealed, e.g., with one or more o-ring seals, in a housing to provide a filter assembly capable of filtering fluid under relatively high pressure. In one embodiment, a filter element, backing member, and seal are disposed in a removable and disposable housing that is sized to fit within a filter housing.

Abstract: An ultrafiltration device has a filter membrane sealed inside a reservoir body, such as a tube. The tube has one or more ports and a closed portion distal to the port(s), and the filter membrane is sealed to the body along a closed contour widely surrounding the port(s) to provide a large area filtered outflow path. The method is effective to rapidly isolate a predetermined amount of a desired retentate in the distal portion of the tube. The method and device are also useful for quantitative transfer of smaller molecules and for multi-step processing of sample arrays. A frusto-conical peripheral filter provides high ratio of effective filter area, and may be configured for hydrostatic deadstopping and little or no wicking, greatly enhancing recovery time and efficiency. Linear array strips of such chambers may be formed by bonding together mating halves with filter areas over the chamber ports.

Abstract: A single or multiwell plate using membrane, preferably an ultrafiltration membrane to filter selected solutes from a liquid is disclosed. In particular, a preferred construction and method of sealing the membrane to the interior of the well so as to form an integral seal between the top portion of the well and the boftom portion is disclosed. The preferred method is to use a heat seal device which secures the filter to the underdrain portion of the device.

Abstract: The invention concerns a filter for liquid circulating in an engine unit or in hydraulic equipment including a tank (1) cooperating with a closure element (2) with a filtering cartridge (3) inserted in the tank (1) and adjusted therein by threadedly engaging the closure element (2) with the tank (1). The cartridge (3) includes a filtering material (4) having at one of its ends a first flange (5) and at the other of its ends a second flange (6) that includes a peripheral seal (8) designed to be sealingly clamped between an end of the tank and the closure element (2) when the tank (1) is threadedly with the closure element (2). The invention is characterized in that it includes at least one element forming a stop (9, 91) provided on the second flange (6) and/or on the closure element (2) and/or on the tank (1), the element forming a stop (9,91) being designed to control clamping of the peripheral seal (8) with the closure element (2).

Abstract: A cell containing sample is separated into a cell containing portion and a substantially cell depleted portion, by mixing the sample with particles to produce a cell containing network, and separating the network from the remaining substantially cell depleted portion within a plurality of confining walls, wherein at least one of the walls is flexible. While in some aspects the separation is performed employing a magnetic force, in other aspects the separation is performed using two forces, wherein one force is a magnetic force and the other force is a mechanical force. It is contemplated that whole blood may be used as the sample, and that the cell-containing portion largely comprises a network of inter-linked red blood cells. It is especially contemplated that separation involves antiligands, preferably primary antibodies that bind to a ligand such as antigen on or in red blood cell membranes, and secondary antibodies that bind to the primary antibodies.

Abstract: The blood filter cartridge of the invention can be used as a sample cup of an analyzer without sucking bubbles, which comprises a blood filtering material, a holder containing the blood filtering material and having a blood inlet and a filtrate outlet, and a filtrate receiver for receiving filtrate discharged from the filtrate outlet, the filtrate receiver has an upper end having a difference in height or structure for returning the filtrate from the upper end of the filtrate receiver to the filtrate outlet.

Abstract: A water filtration assembly (10) includes a first end cap (34) covering the first end of a housing (12) and a second end cap (36) covering the second end of the housing (12). The end surface (40) of each end cap (34 and 36) has a L-shaped cap recess therein with an axial leg (42) and a transverse leg (44) extending about the end face. A projection (30) at the first end of the housing (12) is disposed in engagement with the cap recess of the first end cap (34) as the end surface (40) of the first end cap (34) abuts the recess end surface (28) at the first end of the housing (12). In the same fashion, a projection (30) at the second end of the housing (12) is disposed in engagement with the cap recess of the second cap (36) as the end surface (40) of the second cap (36) abuts the recess end surface (28) at the second end of the housing (12). The end caps (34 and 36) are formed with a two sided shoulder (46) filling the corner between the axial (42) and transverse (44) legs of the cap recess.

Abstract: The sewer basket is to be positioned at any selected level within a vertical sewer pipe having an interior surface and an opening at street level without in any way modifying the same. A basket support is provided comprising an expandable support for extending entirely around the interior surface of the sewer pipe and having at least one pair of opposite spaced free ends that define inturned ears through which a bolt extends and the ears are spread apart by nuts screwed on the bolt. For a sewer pipe of circular cross-section, the basket frame and the support frame are both of circular shape, the expandable frame having a single pair of spaced ears with a single bolt extending through the ears. For sewer pipes of quadrilateral shape, both the basket and the support frame are similarly quadrilateral, the support frame being made of two U-shaped sections each having opposite free ends defined by inturned ears and a bolt with nuts extending through each pair of ears.

Abstract: A hollow fiber membrane device adapted for bore side feed includes a split annular disk as a tube sheet support. The device may be assembled without integrating tube sheet support means into the hollow fiber bundle and tube sheet combination and without in situ tube sheet formation.

Abstract: A funnel having at least one channel or groove formed by projected ribs in the sidewalls of the funnel. The projections space the sides of a filter membrane placed inside the funnel, thereby preventing the sides of the filter insert from adhering to the sidewalls of the funnel and allowing the fluid to flow through the sides of the filter insert and into the grooves or channels that conduct the fluid to the discharge orifice of the funnel. The projected ribs are preferably a plurality of raised ribs arranged at approximately 45 degree intervals about the funnel interior surface.

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: A filter assembly (10) with a filter housing (12) and a bag-type filter element (14). A collar (36) is disposed inside the housing below an opening (42) through which a process stream is introduced into the filter assembly. The filter element includes a filter bag (70) to which a sealing ring (72) is attached. The sealing ring is formed to define a channel (84) in which the collar is seated. The sealing ring also has a lip (86) that snap secures against a complementary stepped surface (60) formed around the collar. A gasket (85) attached to the sealing ring forms a liquid-tight barrier between the collar and the sealing ring. The collar is also formed with a boss (62). The sealing ring defines a alignment notch (88). In order to seal the filter element in place, boss (62) must seat in alignment notch (88); this ensures that when the filter element is secured in place, it is properly aligned with the other components of the filter assembly.

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 liquid filter including an inlet portion, an outlet portion and a central portion having a first inner diameter and a second, reduced inner diameter and a pleated disc filter retained inside of the central portion of the filter by a spring, and the filter having at least one of the end fittings being a threaded fitting and having corresponding threads on a corresponding portion of the housing.

Abstract: A coupling is provided having filters in the coupler and/or the nipple members. The coupler filter resides in the inlet to the coupler and the nipple filter resides in the inlet to the nipple member. The coupler and the nipple filters are easily replace due to their locations and the means employment to secure them in place. The coupler and the nipple filters are strength stainless steel filters having pores in the range of to 250 microns.

Abstract: A strainer apparatus capable of being installed within an Acme type coupling of the kind used in a pipe connecting a transport gas tank to a gas storage tank comprises a perforated disc and a retainer ring. The outer surface of the retainer ring has a smooth portion and an adjacent knurled portion. The disc acts as a strainer and is permanently fixed inside of the Acme coupling by means of the retainer ring knurled portion being press fitted against the inner surface of a coupling counterbore within which both the disc and ring are installed. The Acme coupling after being fitted within the strainer disc is installed in the pipe line leading between a gas transport tank and a gas storage tank to prevent debris from being pumped through the pipe coupling and towards and possibly to the gas storage tank.

Abstract: A strainer formed by a body member defining an inlet passage for receiving the fluid and an outlet passage for discharging the fluid. A chamber is connected to the outlet passage and an internal passage connects the inlet passage to the chamber. A separator is disposed in the chamber for separating particles from the fluid as the fluid passes through the chamber. The fluid is thus routed into the inlet passage, and through the inlet passage to the chamber where the particles are separated. The fluid is then passed to the discharge passage for discharging the fluid to a conduit.

Abstract: A fluid filter has a housing fabricated from two portions made from a toxic resistant plastic, such as TEFLON, and includes a filter element sealingly supported therein in such a manner that contaminants or foreign material filtered thereby is captured in an area closed off by novel seals formed between the two housing portions. The seals may take the form of an accordion-type seal, or, male-female type engaging ends may be used. The seals allow the filter element to be removed and examined, if needed, and allows the housing portions to be easily and quickly assembled and disassembled for repair or examination.