Abstract: An exhaust gas treatment system for an internal combustion engine may have a reductant delivery system with a reductant tank. A filter module positioned in the reductant tank filters reductant before it is conveyed to the reductant pump to remove impurities. In order to reduce gas flow to the pump, the filter module may have an outlet port leading to the reductant pump and a venting port positioned above the outlet port such that gas bubbles float to the venting port prior to entry of the reductant into the outlet port. The filter module may be secured to a tank level sensor assembly, and may vent the gas to a gas reservoir above the reductant in the reductant tank. Such a filtration system may operate independently of any return line that conveys reductant back to the reductant tank.

Abstract: A filter and replacement filter cartridge is provided with a pulsation dampener mounted and sealed to the filter cartridge basket at an inner diameter thereof. The pulsation dampener is captive to the basket such that removal of the basket from the filter housing canister removes all of the basket, filter media, and pulsation dampener as a single unit without separate, loose parts thereof. An axial extension section of the basket facilitates gripping and removal, and maintains a fully seated installed filter position. Sealing is provided without a section of the pulsation dampener interposed between the filter housing canister and lid.

Abstract: A filter for diesel fuel having at least an inlet conduit (4) and an outlet conduit (5) of the diesel, and being provided at least a toroidal filter element (3) inserted on and supported by a cylindrical support element (13), the filter further comprising a device for reducing dimensions of air bubbles present in the diesel fuel, wherein the device comprises at least an air conveyor chamber (10) associated to the cylindrical support element (13), wherein the air conveyor chamber (10) is provided with at least a hole (11) from which the air accumulated in the filter can exit in order to enter, in a form of small bubbles, a flow of the diesel fuel in outlet from the filter, and wherein the air conveyor chamber is defined by a bulge of the cylindrical support element (13), which protrudes towards the inside of the cylindrical support element (13).

Abstract: A water treatment system is capable of meeting the particular needs of a variety of water treatment system applications. For instance, the water treatment system may include a customizable display, multiple interchangeable filters and disinfection systems. In one embodiment, a vessel containing the filters and disinfection assembly can be easily removed from a base that supplies water to the vessel. In another embodiment, the water treatment system includes a plate that includes at least one electrical connection. One or more electronics bricks with sensors, displays and the like can be removably attached to the plate such that each electronics brick is in electrical communication with said brick. In another embodiment, the water treatment system incorporates one or more stackable and interchangeable filter blocks that direct water flowing into the vessel through each filter media.

Abstract: Fluid flow surge protection is provided for a filter by increasing upstream plenum fluid volume. In one embodiment, an accumulator or transfer mechanism transfers or trades downstream plenum fluid volume to or for upstream plenum fluid volume.

Abstract: The invention concerns a method and an apparatus for removal of ammonium from a polluted media, which avoid the disadvantages related to the chemical-physical properties of MAP, with the aim to improve the technical and economical operational parameters and to produce a reusable and environmental friendly produced nitrogen fertiliser. The invention concerns a method and a apparatus where all chemical processes and mechanical steps are carried out in one single container with the different steps split in time phases, whereby the chemical products are prevented from transportation between compartments and contact with pumps and pipes. Only liquids without precipitates are in contact with these elements. The apparatus includes a process container, an elevator unit and a flexible membrane which together enables all chemical processes, separation, mixing and gas extraction to be carried out in the same compartment.

Abstract: A filter device for filtering liquids having a filter element situated in a filter housing, with a deformable expansion element being provided in the filter housing so that when it is deformed, the volume of at least one section of the flow path of the liquid to be filtered in the filter housing is variable.

Abstract: A blood filter system used for the sequential filtering of blood while actively removing air bubbles and debris comprising a filter housing with unique conical, or cylindrical shape, a flared inlet port, a unique up and down blood flow path, a multi-stage sequential filter assembly, an active air purge assembly and a unique downspout assembly with outlet port. The filter housing is adapted so that blood passes from the inlet port through the multi-stage sequential filter assembly to the outlet port following an up and down flow path, while its unique shape and angled filters effectively direct any air bubbles and debris up and out of the blood stream toward the active air purge assembly where they are removed.

Abstract: An eyeglass lens processing apparatus for processing an eyeglass lens includes: a processing chamber inside which a lens grinding tool is disposed; a tank which stores grinding water; a drain hose connecting the processing chamber with the tank; a filter for eliminating bubbles attached to an outlet of the drain hose, which includes a large number of pores having a size such that permits passing of processing debris stemming from rough processing and inhibits passing of bubbles larger than the processing debris.

Abstract: The invention relates to a fuel filter for an internal combustion engine, comprising a filter housing consisting especially of metal, and a filter element and a pressure-regulating valve located in said filter housing. The aim of the invention is to ensure that no noise originating from the pressure-regulating valve is emitted. To this end, the pressure-regulating valve is mounted in the filter housing in such a way that vibrations are dampened.

Abstract: The method and apparatus are provided for preparing a slurry for a CMP apparatus with which mixing accuracy for a slurry is improved and accurate measurement is automatically accomplished for H2O2 as a small amount of additive. A slurry preparation apparatus for a CMP apparatus comprises a tank for preparing the slurry, a stock solution feeder for the slurry which feeds a stock solution for the slurry into the tank, and a concentration measurement instrument located outside the tank, which is capable of measuring an additive concentration in the slurry in the tank. The concentration measurement instrument measures the additive concentration in the slurry in the tank, and the amount of the stock solution for the slurry to be supplied is controlled according to the measurements.

Abstract: A noise muffler for the exhaust of waste gases from apparatus such as an oxygen concentrator, including a muffler core with an inlet to receive the waste gases and a plurality of bores in the core first to direct the waste gases through a filter material and a cap enclosing the filter material and forming a plurality of outlets to direct the waste gases out of the muffler, the bores and outlets positioned to cause the waste gases to change their direction of flow multiple times before exiting the muffler.

Abstract: Apparatus and methods for removing gas from a blood handling system. A filter apparatus for monitoring and removing gas is provided comprising of a gas removal/blood filter, a sensor to sense the presence of gas, and a valve operably coupled to the sensor to evacuate gas from the apparatus when the sensor detects an accumulation of gas. When used with a previously known blood handling system, the present filter apparatus facilitates priming and the addition of additional blood handling elements during operation of the blood handling system.

Abstract: A freeze resistant filter cartridge assembly, includes a filter cartridge including a filter housing and a filter media and having at least one component selected from a list of components consisting of: the filter housing being formed of an increased elasticity polyolefin polymer having elongation and glass transition properties that allow for stretching of the housing during a freezing event rather than rupturing; a sleeve having a volume of air entrapped therein within and being disposed in the interior of the filter cartridge; and the filter housing formed of a conventional polyolefin having a wall thickness great enough to resist freeze induced expansion stresses. A method of forming a freeze resistant filter cartridge assembly is further included.

Abstract: A water valve assembly includes a valve body having defined therein a central cavity. The water valve assembly also includes an integrated filter and noise suppressor device having a component body which has defined therein (i) a number of screen members, (ii) a number of fluid channels, and (iii) a first flange secured around a periphery of the component body with each of the number of fluid channels extending through the first flange. The integrated filter and noise suppressor device is positioned within the central cavity of the valve body. A method of operating an appliance water valve assembly is also disclosed.

Abstract: A multiple cartridge filter housing assembly for the high purity filtration of etching liquids, deionized water, slurries and other liquids used in the semiconductor, pharmaceutical and chemical industries. It comprises at least one upper and one lower cartridge within a bottom housing, a top housing and at least one extension housing. A vent tube in the top housing extending to the upper spacer ring in the extension housing generates a first air pocket between its lower end and the top of the housing assembly. The upper end of each cartridge is centered by a flow-through spacer ring. The lower end of each cartridge is sealed, against the pressure drop across the cartridge, and centered by an adapter ring. The adapter rings, except for the bottom one, have a downwardly extending tube with flow-through holes at its lower end such that secondary air pockets are generated above the holes and below the bottom surface of the adapter ring.

Abstract: A filter cartridge, including a tubular filter element which encloses an interior space on the downstream, clean air side, is joined in the axial direction on one side to a side-face lid, forming a seal. In order to reduce pressure peaks which occur in the filter element on the clean air side, the lid has a diaphragm which is capable of vibrating.

Abstract: A vapor separating unit for a fuel system and having particular application to a fuel system for a marine engine. The vapor separating unit includes a closed tank having a fuel inlet through which fuel is fed to the tank by a diaphragm pump. The liquid level in the tank is controlled by a float-operated valve. An electric pump is located within the vapor separating tank and has an inlet disposed in the tank and an outlet connected to a fuel rail assembly of the engine. Excess fuel from the fuel rail assembly is conducted back to the upper end of the vapor separator tank. A vapor venting mechanism is incorporated in the tank to vent vapor from the tank.

Abstract: A defoaming device for separating foam and bubbles from a liquid, such as blood, is disclosed. The device can be used in conjunction with a medical device, such as a membrane oxygenator, for separating air from blood while minimizing blood contact with the antifoam agent used in the device. In a first embodiment, the device includes a reservoir and a filtering material that does not contain any antifoaming agent. This filtering material is positioned in a lower portion of the reservoir to separate foam and bubbles from the liquid. An element containing an antifoaming agent is positioned in the reservoir above the maximum surface fluid level therein and receives the foam and bubbles that rise from the filtering material. Contact of the liquid with the antifoaming agent is substantially avoided. In a second embodiment, an element containing an antifoaming agent is positioned in the reservoir within the fluid therein.

Abstract: Chromatography systems with devices for compressing the column packing and/or for pulsation damping have incorporate an additional device in which a preselected minimum pressure, which is independent of the eluent pressure, is combined with a second pressure component which is proportional to the eluent pressure.

Abstract: A water filter with improved filtration efficiency and extended operational period. The filter includes a cassette member filled with filtration and activation agents, where a water path connecting a water inlet pipe and an open upper end of the cassette member is formed between an outer housing member and the cassette member, while an open lower end is directly connected with the water inlet pipe; a center pipe located inside the cassette member for connecting an inside of the cassette member with a water outlet pipe; and a damper member placed inside the cassette member which is vertically slidable along the center pipe, which divides the inside of the cassette member into an upper filtration chamber connected with the upper end and a lower filtration chamber connected with the lower end, where the water flows through the upper filtration chamber from the upper end and the lower filtration chamber from the lower end alternatively.

Abstract: A filter for the lubricating oil and refrigerant within refrigerators, freezers and heat pumps is provided which does not interfere with the cooling cycle. The filter utilizes a housing with an orifice that functions as an outlet and an inlet for the transfer of fluids. The filter withdrawn fluids from a location between the compressor and the condenser when the compressor cycles on and returns the fluids when the compressor cycles off. Preferred embodiments of this invention provide for the release of additives to the fluids from the filter material. Also provided by the invention are vapor compression cycle devices which incorporate such a filter and a method of filtering said fluids.

Abstract: In a fuel filtering device for a fuel pump (6) which is arranged in a liquid fuel tank (1) of vehicles and feeds the liquid fuel to an engine, there is provided a screen (17, 23) which is for filtering the liquid fuel (2) and is constituted as a bag with a bottom part thereof disposed in contact with or close to an inside wall of the bottom of the fuel tank and covers a suction opening (16) of a suction tube (15) and at least a part of the suction tube (15), the screen (17, 23) being constructed with a dense web which forms a substantially air-tight liquid film by soaking the liquid fuel (2) which makes contact with at least the bottom part of the screen (17, 23) when the screen is partially immersed in the liquid fuel (2).

Abstract: A known fuel filter is formed by a meshed body in a bag shape made of a synthetic resin while the meshed body is penetrated to form a fuel passage which is open toward the inside of the meshed body. The known fuel filter is attached to a portion adjacent to a bottom of the fuel tank for preventing water and a dust accumulated inside the fuel tank from being drawn inside the fuel filter. However, the known fuel filter has the fuel passage penetrating the central portion of the meshed body so that the degree of freedom of attachment is reduced. On the other hand, a fuel filter according to the present invention comprises a piece of meshed body being folded double, an outer flange and an inner flange respectively having a fuel passage and being connected to each other from the inside and the outside of the doubled folded portion, a swollen supporter provided integrally with or separately from the inner flange.

Abstract: A defoaming device for separating foam and bubbles from a liquid, such as blood, is disclosed. The device can be used in conjunction with a medical device, such as a membrane oxygenator, for separating air from blood while minimizing blood contact with the antifoam agent used in the device. The device includes a reservoir and a filtering material that does not contain any antifoaming agent. This filtering material is positioned in a lower portion of the reservoir to separate foam and bubbles from the liquid. An element containing an antifoaming agent is positioned in the reservoir above the maximum surface fluid level therein and receives the foam and bubbles that rise from the filtering material. Contact of the liquid with the antifoaming agent is substantially avoided.

Abstract: A filter for liquids is disclosed, which has a base with a central inlet, and an outlet, a central post with a filtering element surrounding and sealing therewith, a cannister enclosing the element and releasably sealed to the base, a passageway in the post, which is sealed to the inlet, and which has means to permit upward flow but inhibit downward flow or drip. This retains the liquid in the cannister and element when drawn upwardly, to prevent drip or spillage, or when lowered to provide a full prime. A method of removing the filtering element without drip, and a method of installing a primed element are also disclosed.

Abstract: The present invention relates to a method and apparatus for the continuous discharge of water from suspension, especially from fibrous pulp, whereby pulp is caused to thicken without having the water to be removed through a thick uncontrollably gathered fiber mat.In accordance with the invention the suspension to be thickened is fed into a filtering chamber, the suspension is formed as a layer that is continuously being mixed for equalizing the consistency differences, the liquid is continuously removed from the suspension and the thickness of the fiber mat being formed on the filter surface is controlled by subjecting said mat to shear stresses.The above described method is realized by an apparatus, in which at least one of the co-operating surfaces, the filtering surface (8) and its counter surface (10), is provided with means (12) for non-mechanically limiting the thickness of a fiber mat on the filtering surface, whereby a uncontrolled formation of a fiber mat on the filtering surface (8) is prevented.

Abstract: A solid-liquid separation apparatus wherein a solid-liquid mixture is introduced into a rotary filtration drum having filter cloth mounted thereon and is allowed to pass through the filter cloth to thereby separate the solids contained therein. The filter cloth has one surface facing the interior of the drum and covered with a napped filter layer which is formed by a multiplicity of fibers having a diameter of 0.1 to 10 .mu.m. The filter cloth preferably has an elongation percentage of not smaller than 1.0%. A base material of the filter cloth includes a weft extending along the rotational axis of the drum and a warp extending in the circumferential direction of the drum. The fibers of the napped filter layer are formed by napping chiefly the weft in the direction of the warp.

Abstract: A sorter for paper pulp suspension including a rotationally symmetrical wire cage and a rotor supporting a plurality of vanes for rotating about the interior of the cage for moving suspension through the wire cage, the vanes being non-uniformly spaced. An annular pulp chamber surrounds the screen for collecting the pulp. A suspension outlet at the bottom of the pulp chamber receives the pulp from the pulp chamber. The pulp chamber extends axially beyond the lower end of the wire cage. An annular damping chamber surrounds the lower end of the pulp chamber and flow from the pulp chamber to the pulp outlet is past the damping chamber. The damping chamber develops a pool of the suspension in it. A pressurized gas cushion above the pool of suspension in the damping chamber controls the level thereof and damps the motion of the pulp in the pulp chamber.

Abstract: An arrangement for feeding fuel, advantageously from a supply tank to an internal combustion engine, particularly of a power vehicle has a feed aggregate through which a fuel flows, and a structural element arranged in a fuel flow and including a filter part and a fuel pressure wave damping member, wherein the structural element is arranged in a housing which surrounds the feed aggregate.

Abstract: A pulse damper for use in a liquid chromatographic solvent delivery system includes a cavity within a housing containing a compliant medium. The compliant medium being an elastomer. As a consequence, a solvent flow volume can be precisely formed and maintained.

Abstract: A hydraulic system including a closed reservoir which is pressurized at a varying pressure that is responsive to a variable condition of the system. The system minimizes the air contained in the hydraulic fluid, causing air which has been released from the hydraulic fluid to collect in the reservoir which has provision for releasing it to the atmosphere.

Abstract: The specification discloses an improved fluid filter (10) including a housing (12), cover (26), spring biased filter element (30) movable between normal and bypass positions, and viscous damper (50) for eliminating oscillation of the filter element. The damper (50) can comprise either a circumferential integral step (52) formed in the filter housing (12) or a separate sleeve (54) inserted therein, located a predetermined distance below the lower end of the filter element (30) when the filter element is in the normal position.

Abstract: The specification discloses surge controlling means for a liquid-solid separator. A plurality of surge compartments are provided above overflow weirs in a holding tank for the liquid-solid material.

Abstract: For the damping of high-frequency vibrations in liquids under high pressure in conduit systems there serves a diaphragm (2) loaded by a spring (3) and surrounded on all sides by the liquid of the conduit system. When the liquid is stationary the diaphragm (2) acts as barrier in a free flow cross-section of the conduit system. When the liquid is flowing the diaphragm (2) is situated in the state of suspense in which it is held by the energy of flow of the liquid against the counteracting force of the spring (3) loading the diaphragm (2). The diaphragm (2) is set in a housing (1) installed in the conduit system in such a way that the liquid on the upstream side of the diaphragm (2) flows through an annular space (6) radially around the diaphragm (2). The diaphragm (2) is especially suitable for installation in the housing (9) of a liquid filter.

Abstract: A filter for liquids has a housing, a filtering element accommodated in the housing and having a central tube, and a vibration damper located in the housing and having a membrane, a spring biasing the membrane and a casing arranged to accommodate the membrane and the spring and including a cup-shaped portion which extends into the central tube and receives the spring therein.

Abstract: A pulse damper for use in high-pressure liquid pumping applications such as liquid chromatography comprises a length of flattened polytetrafluoroethylene tubing that can be coupled to the high-pressure liquid flow line. The flattened tubing is enclosed within a liquid-tight housing structure completely filled with a compressible liquid, and the end of the tubing are coupled to the high-pressure flow line by fittings mounted inside the housing structure. When a transient pressure variation occurs in the flow line, the cross-section of the tubing changes from a flattened elliptical configuration to a more rounded configuration as the pressure pulse temporarily overcomes the stresses that tend to maintain the tubing in its flattened configuration. The restoring force of the compressible liquid in the housing structure surrounding the tubing prevents expansion of the tubing beyond a desired limit during a pulse, so that the tubing cannot burst when its cross-sectional configuration changes.

Abstract: A method and apparatus for fluid transfer across a membrane wherein transfer fluid is passed through the interior of a wrapped, permeable, flattened, tubular membrane and fluid to be processed is passed through passageways formed between the wrappings of the tubular membrane. The exhaustion of transfer fluid begins at the completion of a process fluid pumping stroke and ends at the initiation of the pumping stroke. In a preferred embodiment the method and apparatus are utilized to oxygenate blood.

Abstract: Disclosed is a process and apparatus for recovering high temperature heat normally lost from materials that have been processed at high temperature, and for transferring this heat directly to materials about to be processed. The apparatus comprises a tunnel having an infrared radiation reflective interior surface through which cool incoming and hot exiting workpieces pass. The cross-sectional shape of the tunnel is elliptical, and the workpieces are moved along focal lines so that radiation emitted from hot workpieces is reflected at the interior surface, directed to cool workpieces, and absorbed. A furnace suitable for subjecting a workpiece to a controlled thermal cycle is also disclosed.

Abstract: In a system for decantation treating of liquid containing therein suspended material, the liquid to be treated is pulsatingly introduced into the bottom of a sludge bed and pulsated therein. The liquid is passed upwardly through the sludge bed at a predetermined speed whereby the suspended material is agglomerated and removed from the liquid. The liquid is forced through the sludge bed from the bottom to the top thereof in paths which are inclined both to the horizontal and to the vertical. Specifically, the liquid passes generally upwardly through an assembly of inclined flow control devices which are positioned within the sludge bed throughout substantially the entire height thereof. Sludge settles within the inclined passageways between the flow control devices for a slight distance until the sludge contacts an inclined bottom wall. The sludge then slides downwardly in an inclined manner along the bottom wall in a concentrated path or current.

Abstract: A filterable fluid flows under pressure through a filtering passage along one side of the filter, so that there is a substantial pressure drop along the filter area in the flow direction. A fluid flow in this same direction is provided in a filtrate passage extending generally parallel to the opposite side of the filter, so as to create a corresponding pressure drop in the flow direction in the filtrate passage, whereby the pressure difference between both sides of the filter is maintained substantially constant throughout the entire filter area.

Abstract: In a liquid chromatograph apparatus, a pulse damper consists of a block of solid material almost filling the cavity of the damper, for example a polytetrafluoroethylene block occupying 99% of the volume of the cavity but arranged to move freely therein.

Abstract: An improved apparatus for protection of a liquid chromatography column is proposed. Under environmental changes in pressure and temperature, a liquid and a gas in a non-expandable container communicated with the chromatography column change their relative volume, so that the environmental changes are not transmitted to the column. To prevent the gas from entering into the column, a conduit connecting the column and the container enters into interior of the container.

Abstract: Apparatus for pumping the eluent liquid through a chromatograph column is provided in the form of an electromagnetic metering pump, the outlet of which is provided with a pulsation damping device in the form of a sealed chamber having a resiliently loaded elastic wall. Considerable control of operation is obtainable by adjustment of the resilient loading and the operation of the pump (speed and stroke length). The chamber may be fitted with a pressure gauge having a closable outlet to atmosphere for purging purposes. Effective chromatographic separation of mixtures is obtainable at low equipment costs.

Abstract: A spin-on type coalescer filter unit comprises a siphon tube which extends from inside the bottom of the filter element canister along the center line of the element, through the attachment nipple of the filter unit head, and into a fitting designed to receive the tube end. The fitting connects the tube to an oil drain passage so that coalesced oil may be driven through the siphon tube and to a drain line by high pressure in the filter canister.