Abstract: Disclosed is a parallel filtering circuit comprising at least two filters of a depth layer filtering type connected in parallel to each other in conduits showing different fluid resistances respectively, whereby, even when both the filters are clogged with particles of contaminants, the total flow rate may not decrease sharply, so that a preventive measure can be immediately taken before a fatal situation occurs. An orifice may be connected at its inlet to the outlet of the conduit having a smaller fluid resistance and at its outlet to the outlet of the conduit having a having fluid resistance.

Abstract: A device for biospecifically purifying a liquid having a first portion containing cellular elements and a second portion without cellular elements, the device comprising a casing, a duct for conducting the liquid into the casing, a filter disposed within the casing for tangentially filtering the liquid to separate first portion from the second portion, a filter disposed within the casing for transversely filtering the separated second portion to biospecifically purify the liquid after the separation of the cellular elements, ducts for evacuating the first portion and second portion from the casing.

Abstract: An oil filter comprising a housing opened at one end, a first separator unit in the housing for removing solid contaminants from the oil and a second separator unit for removing gaseous contaminants. The first separator unit includes a cylindrical filter element and upper and lower end plates attached to the upper and lower ends of the filter element. The second separator unit is disposed in the space defined by the inner periphery of the filter element and between the upper and lower end plates. It includes a chamber arranged to generate a vortical flow of the oil introduced thereof to thereby separate gas-rich oil which gathers in an axially central portion of the chamber, a first outlet for discharging the gas-rich oil and a second outlet for the oil containing little gaseous contaminants, the first and second outlets extending into the housing from the open end thereof.

Abstract: A method and a device for ultrafiltration during hemodialysis are described in which ultrafiltrate fluid, before removal from the dialysis circuit, is passed through a balancing device, which is also used as ultrafiltrate pump. For this purpose, a controller controls and actuates inlet, outlet, and dialyzer valves, in such a way that a desired amount of ultrafiltrate, corresponding to the filling volume of a balancing chamber or a multiple thereof, is introduced to the discharge through the balancing chamber. In order to carry out continuous ultrafiltration during hemodialysis, a predetermined amount of air is introduced to the dialysis fluid flow circuit through an air separator and is then pumped off during hemodialysis so that a corresponding amount of ultrafiltrate is obtained.

Abstract: A fuel filter assembly employs a base which mounts a disposable filter element cartridge and includes a sump for collecting water removed from the filtering unit. The cartridge includes a dual stage filter system wherein fuel flows axially to an upper filter element for removing particulate matter and coalescing water droplets and axially to a secondary filter stage which functions as a water barrier. The filtered fule flows axially downwardly and through an outlet passage from the base. The water collected in the sump is removed through a drain cock.

Abstract: A device and method for permitting the separation of plasma or serum from whole blood. The device comprises a matrix of hydrophilic sintered porous material to which at least one red blood cell agglutinating agent has been applied. According to a first method of using the device, a sample of whole blood is applied to a first end of the matrix and the red blood cells within the sample come in contact with the agglutinating agents present in the matrix. The blood cells agglutinate, and are entrapped in the interstices of the matrix, while substantially blood-cell-free serum or plasma accumulates near the outlet of the device. A filter means in liquid receiving relationship with the matrix functions to wick the serum or plasma from the matrix.According to an alternative aspect of the invention, a filter means in liquid receiving relationship with the outlet of the matrix functions to retain any blood cells which pass through the matrix is the filter means wicks the plasma or serum from the matrix.

Abstract: Using a membrane separating device to remove cell-free fluid from a suspension of cells to preconcentrate cells in the suspension prior to processing in a centrifuge.

Abstract: A process and apparatus employing nylon 4 for the purification of water comprising the steps of contacting the water with iodine in a first treatment zone; nylon 4 complexed with iodine rather than elemental iodine is preferably used and is contacted by the water in the first treatment zone where it releases iodine at levels sufficient to purify the water. The treated and purified water is then contacted with nylon 4 in a second treatment zone where the iodine is removed from the water. The apparatus comprises a conduit having an inlet and an outlet, with a first treatment zone containing nylon 4 material complexed with iodine and a second downstream treatment zone containing nylon 4. The nylon 4 material used in both treatment zones can be in any form, preferably a form having a high surface area. A suitably restrained moistened fine powder may be used as may be textured or untextured, drawn or undrawn, staple fiber, knitted or non-woven fabrics or pulp (fibrils).

Abstract: A filter cartridge for cleaning oil of an oil sealed vacuum pump which comprises a cartridge housing, the cartridge housing being releasably mounted to the vacuum pump; filter materials including at least two types of filters having different characteristics, the filter materials including the filters being disposed in the cartridge housing.

Abstract: A filter structure including inlet and outlet members between which is sandwiched a suitable filtration media, such as activated carbon and mechanical filters, either being taken alone or in combination with one another. The upper inlet member is provided with substantially circular arrays of openings being arranged at spaced intervals about imaginary circles of different diameters and having a common center. The openings further removed from the common center of the imaginary circles are of greater diameter. The surface in which the openings are provided tapers downwardly and outwardly from the aforementioned common center causing liquid deposited thereon to seek passage through the openings furthest removed from the aforesaid common center. The second, lower member is provided with three (3) sets of arrays similar to that provided in the upper inlet member.

Abstract: An apparatus for cryoprecipitation of blood plasma, where the blood from a patient is fed to a plasma separator (1) in order to obtain blood plasma which is then cooled to about +4 degrees centigrade. The blood plasma from the plasma separator is next fed into a container (5). As the contents of the container are kept at a sufficiently low temperature, cryoprecipitation occurs in the container. The blood plasma from the container is then circulated preferably in a loop past a plasma filter (60), where a cooling unit (9) is placed on a branch of the loop (7,8). The filtrate from the plasma filter (6) is finally returned to the patient after it has been warmed in a heating unit (11).

Abstract: Disclosed herein is a hemodiafiltration cartridge and apparatus and methods utilizing said cartridge. Said cartridge comprises: a dialysate inlet; a dialysate outlet; a blood inlet; a blood outlet; a first semipermeable membrane means for sterilizing and depyrogenating dialysate prior to its contact with blood; and a second semipermeable membrane means for the removal of wastes from blood.

Abstract: The disclosure pertains to an oil decontamination and water recycling system which is designed to prevent oil, grease, and fuel contamination of ground or surface water and to return the clean water in a single pass for reuse. Water contamination results from pressure or steam cleaning of grit, scale, oil, grease and fuel contaminated equipment. The system is a closed loop separation, filtration and absorption system which removes these contaminants and most other petroleum products. The free oils are discharged to a holding barrel and the solids are removed from the settlement tank and drained off from the centrifugal separator. The petroleum based contaminants such as oil, grease and fuel are absorbed mechanically by a cartridge filter for easy disposal.

Abstract: A fluid filter for use in a fluid system wherein fluid is forced through the filter by a suction source connected to the filter outlet is disclosed. In addition to a housing defining a volume, with an inlet and an outlet, and a filtration media envelope inside said volume, the filter further includes an envelope spacing means to support the envelope against collapse, and fluid flow spacing means between the housing and the envelope. In a preferred embodiment, the envelope spacing means comprises a grid assembly inside the envelope, connected to the housing inlet to maintain proper positioning.

Abstract: A process and apparatus for protecting a media bed filter with underlying support screen from solids contained in a liquid, such as filtrate from the filter, used to regenerate or backwash the media bed filter. Filtrate enters a first collection chamber containing a screen assembly covering one outlet, the chamber also containing a second outlet. Filtrate traverses the screen assembly and is transferred to a second collection chamber with addition of a predetermined amount of bactericide to prevent solids growth therein. Upon bactericide-treated filtrate reaching a predetermined level within the second chamber, filtrate in the first chamber bypasses the screen assembly and flows out the second output to further biological treatment or use. Bactericide-treated filtrate from the second collection chamber is used to regenerate or backwash the media bed filter with addition of optional surfactant to assist in cleaning the filter media and underlying support screen.

Abstract: A filtering system for use in coextrusion apparatus, and particularly for removing carbon particles from a core extrudate of thermally degradable barrier material which has been preencapsulated with a preencapsular material. The filter includes a casing and a frame mounted to the casing. A coarse filter screen through which the component streams can flow is also provided. The coarse filter screen is mounted to the frame and is composed of a web of woven strands having a sufficiently small diameter so as to permit the preencapsulated core extrudate to pass through and emerge from the coarse filter screen without substantial mixing of the barrier material and the preencapsular material. The fine filter screen is supported by the coarse filter screen upstream of the coarse filter screen.

Abstract: An improved pressurized filter apparatus, which filters fluid axially through filter elements formed with wound layers of tissue, includes at least one fluid collector with at least one passageway for filtered fluid to flow from the adjacent filter elements inwardly into the centrally located flow path to the filter exit port. The passageways are formed by upraised ridges which space the filter element exit ends from the substantially flat portion of the collector. Annular ring portions project axially from the flat portion of the collector into the adjacent filter element exit ends to form a first seal which separates unfiltered fluid from filtered fluid. A rigid outer retention ring projects axially from the outer perimeter of the collector flat portion, and includes one inside surface for each adjacent filter element which abuts against the periphery of the adjacent filter element to form a second seal which further ensures separation of unfiltered fluid from filtered fluid.

Abstract: The present invention sets forth an improved cell type filter cartridge in which the individual cells contain a separator disc having stiffening members formed at the central aperture of the cell and connected to a plurality of the separating ribs in spaced relation to each other. The coaction of the two or more discs with the separator ribs provides for a rigid, box-like structure of the ribs to impart a substantial cantilevered strength to the ribs. Additionally, at least one of the stiffening discs is positioned at or near the ends of the separator ribs to act as a load-bearing surface to prevent media intrusion of the filtering medium and thereby maintain the area of the flow path of the filtered liquid as it passes through the central aperture of the disc.

Abstract: A filter device for a fuel tank includes a suction pump main body contained within a fuel tank, a generally cylindrical mounting member mounted upon a bottom portion of the pump main body, and a filter attached to the bottom portion of the pump main body through means of the mounting member. The filter comprises a net. The net is folded over upon itself such that an upper net piece and a lower net piece are vertically overlapped with respect to each other. The upper net piece is formed with a through hole for permitting an upper portion of the mounting member to pass therethrough. The peripheral portions of the net pieces are welded to each other so that the filter is formed as a flat, bag-shaped structure defining an inner enclosed space. The upper portion of the mounting member is connected with the bottom portion of the pump main after passing through the through hole. The inner enclosed space of the filter is in fluid communication with the pump main body by means of the mounting member.

Abstract: A fluid collector for use in a fluid filter includes a substantially flat portion having two sides of which at least one faces a filter element from which filtered fluid is received, a centrally disposed opening adapted to allow the centrally located flow path to pass axially therethrough, and at least one slot which forms a passageway for filter fluid to flow from the filter elements to the receiving ports into the centrally located flow path. The fluid collector also includes ridges which project axially from at least one side of the substantially flat portion to maintain the filter element ends in parallel spaced relationship to the substantially flat portion.

Abstract: The specification discloses improvements in axial flow filters of the type having filter elements constructed of spirally wound tissue layers and having planar fluid entry and exit surfaces located at their opposite axial ends. Entry and exit filtration stages are provided in the form of annular webs of filter media covering the entry and exit surfaces the filter elements to provide additional filtration of fluid entering and exiting the elements. The filter media comprising the entry filtration stage is specially adapted for distributing the flow evenly across the entry surfaces of the filter element to minimize the formation of bypass flow channels between the tissue layers, and for plugging any bypass flow channels that form to effect a distribution of the flow to areas on the entry surfaces where bypass flow channels do not exist.

Abstract: A system for processing and reclaiming machine tool coolant wherein filtering apparatus mounted upon a portable frame is transported to the machine tool and includes pumps for cycling coolant from the machine tool coolant reservoir through coarse and fine filters to remove contaminating foreign matter, including bacteria. The apparatus includes an accumulating reservoir receiving and supplying pumped coolant and the pumps are controlled by float-operated switches maintaining a sequence of pump operation to assure efficient pump operation.

Abstract: Passing a sample of a liquid dispersion or emulsion of solid or immiscible liquid particles through one or more filters having a selected pore size less than 5000 A permits separation of the dispersed phase by particle size and/or separation of the dispersed phase from the continuous phase. The process is applicable to obtaining samples of dispersed particles, particularly latex, for analysis.

Abstract: A portable water filter for household use is disclosed, comprising a pair of releasably connected, upper and lower sections. A water faucet is connected by a line having a severe flow restriction to the lower section for discharge into the bottom thereof. The two sections are connected by a threaded collar having an integral wall separating the two sections with aperture means at its center for upward flow of water from the lower to the upper section. Each section contains two filtering materials, one of which in each section is a plurality of nested, cup-shaped, paper filter elements sealed by a mating ring to the interior surface of the respective section. The walls of the sections are transparent to permit viewing of the filter materials, thereby visually indicating the need for filter replacement by the degree of discoloration thereof.

Abstract: A lubricant filter assembly for an internal combustion engine is provided which includes a head member removably mounted on a base member. The head member includes a sleeve-like housing open at one end only and having first and second filter units fixedly mounted therein. The outer peripheries of the filter units coact with the interior surface of the housing to form a common inlet passage. One of the filter units is provided with an interior first outlet passage which communicates with a first passage formation formed in the base member. The first passage formation communicates with a first lubricating circuit of the engine. The second filter unit is provided with an interior second outlet passage which communicates with a second passage formation formed in the base member. The second passage formation communicates with a second lubricating circuit of the engine. Seal sections are carried by the head member.

Abstract: A filtration unit comprising a filtration media subunit secured in an outer frame. The subunit comprises a fibrous filtration media enclosed in an inner frame having an upstream frame element and a downstream frame element. Each frame element has longitudinal and transverse struts and the intersection of these struts is in a single plane on the side of the frame elements which contact the filtration media. In one embodiment the filtration unit is enclosed in a sock of knit fabric; in another embodiment, there is a piece of knit fabric between the outer frame and the downstream frame element of the inner frame. The longitudinal struts may have portions which are perpendicular to and project beyond the principal plane of the periphery of the downstream frame element. If such perpendicularly projecting portions are provided, they are preferably arcuate in configuration.

Abstract: A filtering screen is described comprising: a first filter mesh, a second filter mesh having a different mesh size from the first and overlying the first mesh, and an apertured support to which both of the meshes are bonded so as to maintain the two meshes in tension, the tension in one of the meshes being greater than that in the other. At least one other filter mesh may be bonded over the first two meshes. The support may comprise a plate of fiber reinforced material having apertures formed therein which are much greater in area than the openings in the filter mesh, or a sheet of metal in which apertures are formed and in which edge regions of each aperture are turned through approximately 90.degree. to extend normal to the plane of the sheet from the underside thereof to increase the rigidity of the sheet. The frame may alternatively be a honeycomb structure or an apertured metallic plate, the filter meshes being joined to the surface of the frame.

Abstract: A swingable filter including an upper lid for discharging a liquid therethrough which is connected to a flexible pipe of a liquid suction device, a weight, a plurality of ribs defining a space for housing and supporting the weight for rotating movement, a first filter element located on the outer periphery of the ribs and a second filter element interposed between the upper lid and the weight. The weight cleans the filter elements by its rotation. To secure the elements together, a detachable rubber band may be provided.

Abstract: A hand operated press is used for extracting cell sap from biological tissue, such as from leaf tissue of plants, as well as from animal tissue as a removable barrel that holds a suitable screen in place in a well. The barrel houses a plunger that is of small diameter so that when the barrel has tissue added to it the plunger is inserted and a substantial pressure may be exerted manually to insure rupturing the cell membranes and releasing all of the cell liquid (in plants called sap) for analysis. In the preferred form the screen holds at least one standard size filter paper disk in place so that the liquid is first forced through the screen to retain large solid particles, and the filter paper disk is wetted for use in a standard analyzer for direct analysis of the desired characteristics.

Abstract: An apparatus is disclosed for removing granular material from an aeration basin of a sewage plant. The apparatus includes a collector for collecting the granular material from the aeration basin. A first pump includes an input and an output port with the input port being in fluid tight communication with the collector for pumping and removing the granular material out of the aeration basin together with a portion of the sewage and waste water contained within the basin. A float is disposed on the surface of the sewage within the aeration basin, the float adjustably supporting the collector relative to the granular material to be removed. A buoyant conduit is connected to the output port of the first pump such that the buoyant conduit conducts the removed granular material, sewage, waste water and bio-mass from the float away from the aeration basin.

Abstract: An annular filter disc for use in a fluid filtering device and being of crenellated shape having outwardly directed bay portions alternating with inwardly directed projecting portions, the latter having edges substantially located on a circular envelope substantially concentric with the disc.

Abstract: A filter and water separator for use with liquid hydrocarbons such as aircraft fuel includes a horizontally directed housing and within the housing a first set of filtering and coalescing elements connected to the inlet port of the housing and a parallel arranged set of separating elements arranged parallel to the filtering elements and communicating with the outlet ports in the housing. Each separating element is provided in its interior with a coaxially arranged hollow cylinder communicating at one end with the outlet port and having an inlet opening at its opposite end. The cylindrical wall of the hollow cylinder is formed with a plurality of inlet openings, the combined cross-section of which increases from the end face inlet opening toward the outlet port.

Abstract: A filtration unit comprising a filtration media sub-unit secured in an outer frame. The sub-unit comprises a fibrous filtration media enclosed in an inner frame having an upstream frame element and a downstream frame element. Each frame element has longitudinal and transverse struts and the intersections of these struts are in a single plane on the side of the frame elements which contact the filtration media. In one embodiment the filtration unit is enclosed in a sock of knit fabric; in another embodiment, there is a piece of knit fabric between the outer frame and the downstream frame element of the inner frame. The longitudinal struts may have portions which are perpendicular to and project beyond the principal plane of the periphery of the downstream frame element. If such perpendicularly projecting portions are provided, they are preferably arcuate in configuration.

Abstract: A multiple-disk type filter including a stack of filter disks disposed in a housing and an extensible support for the stack of filter disks, the extensible support including first, second, third and fourth base elements and a multiplicity of rod members joining the first and second base elements in sliding relationship, a first plurality of the rod members being fixedly attached to the first base element and being arranged for slidable supporting engagement with the second base element and a second plurality of the rod members being fixedly attached to the second base element and being arranged for slidable supporting engagement with the first base element.

Abstract: This invention pertains to a fluid filter apparatus and more particularly to an improved fluid filter apparatus in which a plurality of disc-like filter elements or pads is preferably mounted on a perforated tubing, although, it can work without the tubing. Each filter element is a disc-like member having a hole cut in the center and is made of a filtering type material such as fiberglass, paper or felt. Each element is cut in a pattern such as a square, triangle or hexagon whose sides are straight or curvilinear which can be cut without waste. Adjacent stacked disc filter elements are orientated such that the configuration of two adjacent filter elements does not coincide. For example, in regard to a square type configuration filter element, adjacent elements are preferably rotated 45.degree. with respect to each other from their aligned position.

Abstract: A modular fuel conditioner having a base and a disposable filter/water separator cartridge releasably secured to the base and defining a filter chamber in fluid communication with fuel inlet and outlet passageways in the base. A three stage filter assembly within the cartridge includes filtering and coalescing media and separates an upper portion of the chamber from a lower portion which defines a water collection sump. A heater in the base warms fuel before it enters the cartridge. Sensing devices in the base are provided for operating signals to indicate the presence of a predetermined quantity of water in the sump and the occurrence of a plugged filter condition. A priming pump on the base is manually operated to restore the fuel conditioner to operational condition after cartridge replacement.

Abstract: A filter element for use in fluid filters which include a sealed pan, or the like, for receiving the filter element in folded condition. The element includes a generally thin, flat body shaped for receipt within the pan when in folded condition. The body has a fold line generally intermediate opposed ends thereof whereby the body can be folded upon itself. The fold line is formed by a double-line indentation or score to facilitate precise folding and alignment of the opposed ends of the filter element for precise registry within the pan.

Abstract: An apparatus for filtering drilling mud that is being recirculated out of the drill hole. A flow conveying tubular section has at its first lower end a flanged base portion sealably attachable to the well casing or blow out preventer and is open-ended at its second end for allowing fluid flow therethrough. Also provided is an outer tank portion encapsulating substantially the upper half portion of the tubular section. The tank portion has an open-ended top for receiving flow out the upper end of the flow conveying tubular section and is integrally attached at its bottom portion to the outer surface of the tubular section to define a container for receiving fluid flow from the tubular section. An adjustable primary filter is provided on that portion of the tubular section enclosed by the tank portion for filtering and conveying fluid out of the tubular section into the tank portion. There is provided a secondary filter having a plurality of angulated vanes defining an angulated mud filtering surface.

Abstract: The specification discloses a filter apparatus including spirally wound tissue layer filter elements for filtering fluid and a seal between the filter elements to prevent fluid from bypassing the filter elements. A flow tube extends through the center of the filter elements. A resiliently deformable mesh spacer is located on the flow tube between the filter elements to insure formation of a radial passageway therebetween. The seal is applied between the filter elements along their circumferential edges in a melted state and migrates into and between the tissue layers and interstices of the filter elements and the mesh of the spacer. As the seal cools and hardens it adheres to the filter elements and the spacer. A seal may likewise be applied between the filter elements and the flow tube.

Abstract: In a filtering device comprising one or more filtering elements (1) having in principle co-axially disposed through-going apertures (4) for the passage of fluid, the individual filtering element (1) consists of two identical filtering discs (2, 3) which abut each other closely along their outer peripheral edges, and which at the sides facing away from each other are formed in such a way that several filtering elements (1) abut each other closely along the inner edges adjacent to the aperture (4).

Abstract: In a suction-type filter machine, a plurality of filter leaves each haing a core panel of egg-crate type walls defining transverse passageways through said panel and openings through said walls to provide vertical, horizontal and longitudinal passageways for filtrate flow drawn by a suction pump through the filter medium enwrapping the core panel and a conduit conductor enclosing an edge portion of the core panel.

Abstract: In the fluid circulation system of a transmission having a prespecified minimum operating temperature and a minimum fluid flow requirement for operation at the minimum operating temperature, a transmission fluid filter comprising a housing having a fluid inlet and outlet, and a filter element supported in the housing. The filter element is a composite assembly of a fine filtering medium such as a phenolic resin-impregnated felt having an opening therein, and a coarse filtering media such as polyester mesh secured over the opening so as to provide through the respective media parallel continuous fluid flow paths. The surface area ratio of coarse to fine filter media is the minimum ratio sufficient to permit minimum flow through the coarse filtering media at the prespecified minimum operating temperature.

Abstract: A separator for separating low and high density constituents of a liquid includes a tank. The tank has a liquid inlet, an opposing liquid outlet and an upper side drain. A filter is mounted in the tank adjacent the inlet for filtering its discharging liquids. An input dam is located downstream of the filter and extends upward a given height. The drain is positioned to draw from locations downstream of the dam. In one embodiment, the tank has a top panel extending across the tank, its upper edge near the drain. The panel is inclined upwardly to cause an upward liquid flow. An internal baffle may be mounted across the tank between the the outlet and the panel. This baffle is spaced from the bottom of the tank to provide an upwardly accelerating liquid flow.

Abstract: A filter-purifier cartridge having a purifier element which can be coupled to one end section of a tubular filter element, or can be adapted to retain filtering means within its hollow core, or be used separately; the purifier element with or without said filtering means, being manually separable from and joined to a top wall member disposed at one end section of said element, the cylinder of that purifier element which retains the filtering means within its hollow core can be adapted to function as the cartridge housing.

Abstract: A diesel fuel pick-up tube has two branches in the fuel tank. One is connected to a fuel strainer having openings of approximately 130 microns and the other is connected to a strainer having openings of about 400 to 500 microns. A vacuum relief valve is in the pick-up branch connected to the coarser strainer and is set to open at a predetermined amount of vacuum on the order of five inches of Mercury. The strainer with the finer mesh would therefore normally pass fuel but not wax crystals when the diesel fuel has reached the cloud point. Only if the finer mesh strainer is sufficiently clogged with wax crystals to cause the vacuum in the pick-up tube to open the relief valve would fuel be taken in through the coarser of the two strainers. Both strainers will prevent water from entering the pick-up tube.

Abstract: A process for the continuous filtration and aging of a viscose solution comprising xanthated alkali cellulose (XAC) is described wherein the XAC is continuously passed in a downstream direction through a series of aging tanks and a series of filter means. The aging tanks are so designed and arranged that the viscose solution is never partitioned into batches, as necessitated by common manufacturing systems, but constitutes a continuous, uninterrupted stream throughout aging filtration, deaeration and spinning. The filter means, standard plate and frame filters, are designed and installed in such a manner that the number of filter changes, or redressings, are substantially reduced in the aggregate, without increasing the number of filters now used in a standard plant, or sacrificing viscose quality. This results in less process interruption, loss of product, and less potential environmental pollution.

Abstract: Arc suppressing gas in a high voltage circuit breaker system is collected, filtered and compressed. The compressed gas is passed through a series of oil and desiccant filters and returned to a high pressure vessel for storage. The oil and desiccant filtering system is combined in a single, separable casing including baffles and a check valve.

Abstract: A hemodialysis apparatus is provided in which two blood compartments are formed by two different types of membranes. One membrane is a relatively high flux membrane, with relatively high hydraulic permeability, and the other membrane is a relatively low flux hemodialysis membrane. The blood compartment associated with the high flux membrane will be separated from the blood compartment associated with the low flux membrane. In use, dialyzing solution flows through only a dialysate compartment adjacent to the low flux membrane to accomplish diffusion at low transmembrane pressures. No dialyzing fluid perfuses the compartment adjacent the high flux membrane, but high transmembrane pressures draw ultra-diffusate into this compartment for collection and measurement of fluid loss in the patient.

Abstract: A filter-purifier cartridge arranged so that a manually separable and manually replaceable hollow cylindrical purifier element is axially positioned and coupled to one end section of a tubular filter, the purifying medium within said purifier element contained between two removable and replaceable foraminous members, said members being optionally capable of manual removal and manual replacement; the filtering efficiency offered by radial flow through the wall of the filter element combined with an axial flow within the purifier element.

Abstract: A frame structure having a pre-dewatering unit fixedly mounted thereon and a final-dewatering and inspection table unit movably mounted thereon. The pre-dewatering unit includes a vertically extending receiving compartment through which the mixture of water and vegetables passes upwardly from bottom to top and a pre-dewatering chute adapted to receive the mixture flowing over the top of the receiving chamber. The pre-dewatering chute includes an upper chamber and a lower chamber separated by a screen member. The screen member is positioned at an angle to the horizontal so that the solid material in the mixture will pass over the top surface of the screen member and a substantial portion of the liquid material will pass through the screen member into the lower chamber. The final-dewatering and inspection table unit includes a final-dewatering section and an inspection table section, both of which are vibrated by a suitable vibratory means.