Abstract: A dual-flow lubricant filter assembly having a bypass filter element with a full-flow filter element stacked thereon includes a grommet disposed between the filter elements for isolating lubricant streams after the lubricant has passed through the filter elements. The grommet is molded of a resinous material and includes an external flange which is sandwiched between the bypass and full-flow filter elements in order to axially position the grommet. The grommet also includes an internal flange which seals with an unthreaded portion of a standpipe with which the filter assembly is coupled.

Abstract: A back-washable, candle filter element has a center tube with a closed peripheral wall surrounded by a plurality of perforated tubes. A head part has bores and a seat and receives a pressure control arrangement located between the bores. The bores establish a direct link between the top openings of the perforated tubes and the central tube for increasing a filtration power in a controlled manner, and for back-washing and drying a filter cake in a controlled manner.

Abstract: A fuel filter assembly employs a base which mounts a disposable filter cartridge. A pair of axial conduits provide fluid communication between the base and the cartridge. An orifice located in one of the conduits provides a bleed vent which controls the formation of air bubbles in filtered fuel exiting the fuel filter.

Abstract: A spill free clean out type sink trap includes a cover sealingly and detachably mounted on a container and, in one embodiment, respective individual inlet and outlet conduits are spaced apart laterally from one another. The conduits both project downwardly below the cover into the container in which case, during use, the water level in the container is spaced from the cover. This is an air space of sufficient volume to receive and hold the liquid, normally retained in the conduits, when the seal between the cover and container is broken. In another embodiment, inlet and outlet conduits are concentric and the outlet conduit projects into a further conduit to an extent such that the lower open end thereof is below the normal liquid level. The further conduit projects sufficiently downwardly into the container such that the liquid free volume in the container is greater than the volume of liquid contained in the lower end of the inlet conduit and the further conduit.

Abstract: A fuel filter assembly of a type wherein a disposable cartridge element is suspended below a base is adapted so that cartridge replacement may be accomplished in a dry or spill-free fashion. A plug is dimensioned and positioned within the base and extends into the mounted cartridge to occupy a pre-established cartridge volume. When the cartridge is axially dismounted from the base, the cartridge essentially gains free volume. The free volume gain allows for the cartridge to capture any fuel which may drain from the base.

Abstract: A fuel filter assembly employs a spring-loaded collar which retains the disposable cartridge to the base. The collar carries a wave spring and comprises followers which ascend a spiral ramp of the base for securing the disposable cartridge to the base in a positive locked position. The filter assembly also incorporates an efficient bleed orifice and a pair of axial spaced seal rings for implementing a fluid seal with the received disposable cartridge.

Abstract: A filter system (10) is disclosed that includes a filter assembly (12) and input/output hardware (14). The filter assembly includes a housing (16) and cap (18) that cooperatively support a prefilter (20) and main filter (22) in a fluid flow path. Fluid flow through the filter assembly occurs radially through the prefilter and axially or radially through the main filter. The main filter includes an alkaline leaching agent to raise the pH of fluid flowing therethrough to, for example, between 8 and 10. A method is also disclosed for evaluating the effectiveness of the filter system in reducing a select contaminant from the fluid by evaluating the effectiveness of the filter system in raising the fluid's pH.

Abstract: A fuel filter assembly incorporates a modular drain bowl which may be removably mounted at the lower end of the disposable filter cartridge. An anchor insert is disposed interiorly at the lower portion of the cartridge sump for anchoring a fastener to attach the drain bowl. The insert also is specially configured to form outlet passages which facilitate the flow of water from the sump to the drain bowl.

Abstract: An oil filter for providing coarse and fine filtration of lubricating oil in an internal combustion engine is disclosed herein. The oil filter includes a cylindrical housing closed by a cover containing a coarse-filtering cartridge of pleated paper included between a lower plate and an upper plate, and a fine-filtering cartridge placed between the coarse-filtering cartridge and the cover. The fine-filtering cartridge is supported between a lower base plate and an upper base plate arranged to bear against the cover. Both filtering cartridges have a cylindrical shape with axial recesses extending therethrough. The fine-filtering cartridge is composed of a band of filtering paper disks, the band being bent as an accordion. The upper base plate is integrally formed with to a first end of a barrel with the barrel coaxially extending through the axial recess of said fine-filtering cartridge and partially into the axial recess of said coarse-filtering cartridge.

Abstract: A fuel filter assembly employs a retainer collar for locking the disposable cartridge to the base. The base and the retainer collar are configured with a pair complementary spiral ramp-like structures. The retainer collar is rotatable so that the catches are positioned in slots of the base for locking the cartridge to the base. A spring washer biases the retainer collar into the locked position.

Abstract: A filtering system comprises an outer housing into which fluid enters tangentially through a side inlet port to create rotational flow therein. Solid contaminants which clog filtering media are precipitated to the bottom of housing through action of centrifugal force in rotational flow. An inner can, disposed within the housing shrouds a filter cartridge. Unfiltered fluid flows rotationally into the inner can and is filtered through a vertical cylindrical filter cartridge. Filtered fluid flows up through the center of said cartridge to a clean fluid chamber below a domed cover and exists downwardly through a vertical outlet tube extending through the filter cartridge to an outlet port in the bottom of the housing. Gases in the system are collected in the clean fluid chamber and transported by the fluid flow through the outlet tube, thereby automatically purging gases from the filtering system.

Abstract: The present invention relates to an oil filter (1) for internal combustion engines, which is preferably used in secondary oil circuit in addition to a conventional oil filter. The oil filter comprises a filter housing (2a, 2b, 3o, 3u) in which a filter element (5) that consists of a roll of absorbant paper that is wound about a rod (4) is installed. In order to simplify production and inventory management, the present invention proposes that the oil filter be configured as a set of elements that comprises the body sections (2a, 2b) and caps (3o, 3u) and a rod (4) with the rolled filter element (5). The volume of the oil filter can be matched to a particular application by connecting a plurality of body sections (2a, 2b) with an appropriate number of rods (4).

Abstract: The invention relates to a generally cylindrically shaped container having a filter medium positioned therein and a plurality of partitions, each extending upwardly from the bottom of the container providing a plurality of adjacent lower sections to include an inlet section within the container. The inlet section has an inlet port on one side of the filter medium interconnecting the inlet section with the inlet of the container, and each of the sections has an outlet port on the other side of the filter medium. When blood is introduced into the filter, the blood flows initially and at low flow rates only through the inlet section, and at sufficiently higher flow rates the blood level exceeds the height of the partition of the inlet section and further flows successively over the partitions and through the adjacent sections.

Abstract: Disclosed is a filtration process for the removal of undesired substances from dry cleaning fluids. Illustratively, a cylindrically-shaped batt of a long-fiber synthetic washable fabric filter is attached to a spoke-like rigid frame and the fabric-frame assembly is placed into a filter housing having a fluid collecting center rod. Contaminated dry cleaning fluid is introduced to the housing, passed inwardly through the fabric, and a contaminant free permeate is collected by the fluid collecting center rod.

Abstract: Multichamber-candle filter element for filtration of a residual volume of a suspension with rapidly settling solid components, includes at least two chambers (1,2) positioned in succession above each other, a lowest of the chambers being from 1/3 to 1/10 of a total length of the candle filter element, and a separate filtrate delivery pipe (8,9) extending into each of the chambers to provide a separate filtrate outlet for each chamber and a partition member separating each of the chambers from each other in a fluid-tight manner. The multi-candle filter element also has a fluid-tight cover plate (6) and a fluid-tight bottom plate (3) and fluid permeable walls (14,15).

Abstract: A water filter system for use in refrigerators having water dispenser and/or icemaker features. The filter system includes a commercially available filter cartridge which removes common water contaminants. A shut off valve temporarily stops the flow of water to the filter to permit replacement of the cartridge. The filter is disposed within the refrigerator for easy access and may be further disposed in a recess in one of the refrigerator walls or the refrigerator door to avoid reducing the useable food storage volume. The shut off valve may be closed by activating a conveniently located switch, by opening the refrigerator door, by opening a cover over the recess, or alternatively may be normally closed and opened only in response to activation of the icemaker or water dispenser features.

Abstract: A tubular filter element consisting of a filter leaf which is pleated and connected at both its fold ends to a hollow cylindrical filter body (F) both of whose front surfaces are sealed by end caps (11, 13), one end cap (13) of which opens, as a connection cap, the hollow core (10') for communication with a housing space (3) of a surrounding housing, the force flow guidance of the fluid to be treated takes place along the folds (10) through a tube (6', 5) which extends through the hollow core (10') of the filter body (F), rests on the fold edges of the filter body (F), is open at one end in the area of the fold range functioning as outlet or inlet (20), is tapered in the area of the fold range functioning as inlet or outlet (21) and forms a connection (5) for the recirculating flow of fluid coaxially to the connection cap (3) for the flow of fluid to be treated which cap establishes the housing communication.

Abstract: A filter system (10) is disclosed that includes a filter assembly (12) and input/output hardware (14). The filter assembly includes a housing (16) and cap (18) that cooperatively support a prefilter (20) and main filter (22) in a fluid flow path. Fluid flow through the filter assembly occurs radially through the prefilter and axially through the main filter. The prefilter and main filter are cooperatively designed to produce enhanced filtration rates and to remove particulate down to 0.5 micron. By substituting the cap and hardware, the filter assembly (12) is readily converted to different applications.

Abstract: An oil burner pump that includes a housing having a filter cartridge chamber that has an access opening which is closable by a removable cover. A filter cartridge is removable inserted into the chamber and is securable to the cover to be removed from the chamber when the cover is removed. The cartridge has opposite end portions and filter fabric extended between the opposite end portions, one of the end portions being removably securable to the cover.

Abstract: A fuel filter assembly employs a base which mounts a disposable filter element cartridge. The cartridge includes a dual stage filter system wherein fuel flows axially to a primary 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 fuel flows axially and exits through an outlet passage in the base. Water may be collected in a sump. The cartridge is retained on the base by a collar which engages against a roll seam structure of the cartridge. In one embodiment the base has a cannister configuration for receiving the cartridge.

Abstract: A magnetic separation apparatus is described, which is primarily intended for separating magnetic particles contained in a fluid. Such apparatus is primarily used in the process of sewage purification by binding magnetic particles to the substance to be removed, and by applying a magnetic filter. The invention resides in the fact that the channel for supplying the liquid to be treated has such a shape that part of the substance to be separated already precipitates before reaching the actual magnetic filter. This avoid the quick filling of the magnetic filter thus extending periods between rinsing the filter. By applying a relatively weak field in the area in which precipitation takes place, precipitation is enhanced.

Abstract: A double filtering filter for lubricating oil of internal combustion engines of motor vehicles comprises a cylindrical housing containing a rough filtering cartridge and a superimposed fine filtering cartridge, both in form of cylindrical sleeves and fitted over a tube extending within the rough filtering cartridge from a cover of said housing. A cover is provided with a plurality of peripheral inlet holes for the oil to be filtered, an axial hole for the outlet of the roughly filtered lubricant, and an intermediate radial hole for the outlet of the finely filtered lubricant. The filter further comprises an annular seal gasket on the tube between said two cartridges, and a pair of annular seal gaskets on the cover, one gasket being positioned outside said plurality of peripheral holes for the inlet of the lubricating oil, and the other gasket being positioned between said eccentric outlet hole and said axial outlet hole.

Abstract: A fuel filter assembly employs a base which mounts a disposable filter element cartridge. The cartridge includes a dual stage filter system wherein fuel flows axially to a primary 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 fuel flows axially and exits through an outlet passage in the base. Water may be collected in a sump. The cartridge is retained on the base by a collar which engages against a roll seam structure of the cartridge.

Abstract: An apparatus is disclosed for purification and/or sterilization or disinfection of water which has a head with water inlet and outlet openings and a housing secured in water tight relation to said head in which there is a cylindrical filter, preferably of activated charcoal. Between the filter and the housing is an outer water channel communicating with the water inlet so that water entering the apparatus is purified by passing through the filter to an inner channel communicating with the water outlet. Water is sterilized or disinfected by an ultraviolet lamp inside the filter over which water that has passed through it flows to the water outlet. The apparatus may be used in multiples which are connected in series or parallel to obtain a greater degree of filtration and disinfection than obtainable in a single unit.

Abstract: A vibrating sieving unit for insertion into a housing to form a sieving filter. The sieving unit can be inserted into an installed casing of a filter unit by the use of a manifold plate. The vibrator directly vibrates the sieving cylinder reducing the buildup of filter cake for improved performance. A unique cleaning-in-place system is presented utilizing the fluid being filtered as the purging liquid.

Abstract: A filtering device includes a head intended to be permanently installed in a fluid dispensing machine and a disposable canister therefor. A central chamber is formed in the head which chamber is in communication with an inlet port and an outlet port for receiving an unfiltered liquid and supplying a filtered liquid, respectively. The disposable canister has a flask shaped main body with a flat top and a neck of substantially uniform diameter on the top. The neck fits in the central chamber. A tube extending through the neck defines an annular clearance between the tube and the interior of the neck which annular clearance is in fluid communication with the inlet port. The opening into the tube located at the top of the neck is in fluid communication with the outlet port in the head. A pair of tab receptacle on the head and a complementary pair of tabs on the canister are engageable with one another by 1/4 rotation of the canister to lock the canister to the head.

Abstract: A filtering device includes a head intended to be permanently installed in a fluid dispensing machine and a disposable canister therefor. A central chamber is formed in the head which chamber is in communication with an inlet port and an outlet port for receiving an unfiltered liquid and supplying a filtered liquid, respectively. The disposable canister has a flask shaped main body with a flat top and a neck of substantially uniform diameter on the top. The neck fits in the central chamber. A tube extending through the neck defines an annular clearance between the tube and the interior of the neck which annular clearance is in fluid communication with the inlet port. The opening into the tube located at the top of the neck is in fluid communication with the outlet port in the head. A pair of tab receptacles on the head and a complementary pair of tabs on the canister are engageable with one another by 1/4 rotation of the canister to lock the canister to the head.

Abstract: In order to separate liquids from slurries containing particulate material, and particularly from slurries of water and spent ion exchange materials which are used for water conditioning in the operation of nuclear power plants and must be disposed of without any significant volume of free standing water therein, a vessel is provided which is filled with the slurry. The bottom of the vessel is conical and defines a region for the collection of water which passes thereto radially through a structure which filters the water and supports a bed of the particulate material thereon. A discharge tube extends longitudinally of the vessel into the region. A level sensor is disposed alongside the tube. A passage into the top of the vessel is provided for blowing air through the bed to force interstitial water through the bed into the region.

Abstract: A liquid proportioner is disclosed in which the interior of a flexible bladder located within a tank provides a concentrate reservoir and a dilutant reservoir is provided exteriorly of the bladder. Because the bladder is flexible, the concentrate and the dilutant are maintained at the same pressure. A first orifice system connects with the dilutant reservoir and a second orifice system connects with the concentrate reservoir. An elongated, tubular filter is located within the concentrate reservoir and operates to remove any solids from the concentrate which would otherwise cause clogging of the concentrate orifice system. Because the pressure of the dilutant and concentrate is maintained equal, the level of the concentrate within the concentrate reservoir remains above the upper end of the filter until the supply of concentrate is virtually exhausted. This ensures that the total area of the filter is available for filtering during the entire operation of the proportioner.

Abstract: A cooking oil filter system comprises a pre-filter for removing relatively large particles from cooking oil and a second filter assembly connected to the pre-filter outlet for removing smaller size particles. A first, inlet manifold connects the drain outlets of a series of cooking vats to the pre-filter inlet, while a second, outlet or return manifold connects the outlet of the second filter assembly to an inlet on each of the cooking vats. Valves are provided in the inlet manifold path between each vat outlet and the pre-filter, and in the outlet manifold path between the second filter assembly and each of the vat inlets. A suitable control assembly controls opening and closing of the valves to control connection of each cooking vat into the oil re-circulating and filtering system.

Abstract: A liquid filter apparatus, for connection to inlet and outlet piping, includes a housing which is integral with the piping and a removable integral filter unit in the housing. The integral filter unit includes bottom and top end caps with a core tube and a concentric outer tube extending between the end caps. A filter element between the core tube and the outer tube stands on ribs extending upward from the bottom end cap and is spaced from the top end cap by similar ribs extending downward from the top end cap, these ribs creating radial flow channels above and below the filter element. The filter element is a wound spiral of filter material and separator forming a plurality of axial flow channels. Some of these axial flow channels are open at the top to receive liquid from the top radial flow channel and closed at the bottom, and some of the axial channels are closed at the top and open at the bottom to discharge liquid into the bottom radial flow channel.

Abstract: A cartridge for a water filter system has a closed housing with only an inlet and an outlet formed in the lower surface thereof. A discharge tube extends from the outlet at the bottom, through the housing, to a position near the top of the housing. There, an elongated sleeve of filter material filters the water leaving the housing. The space between the inlet and the filter sleeve is filled with three different filter materials, most of which is activated charcoal.

Abstract: In a filter for filtering human blood, especially in an extracorporeal circulatory system, with a blood inlet, a blood outlet and a vertically directed, hollow, cylindrical filter element located between them and consisting of a filter, and in which the hollow, cylindrical filter element seals housing chambers located in the filter housing between the blood inlet and the blood outlet in such a manner from each other by means of its front surfaces that the blood can only flow through the filter element, whereby the blood inlet is located in the center of the housing and of the hollow, cylindrical filter element and a gas outlet is located at the highest point of the housing, the blood inlet runs axially through the hollow cylinder of the filter element as a central ascending tube and divides it cross section into a smaller ascending pipe section and into a settling chamber section for the blood which is several times larger.

Abstract: A unitary device for the treatment and collection of blood from two different sources during a surgical procedure comprises a hollow housing made of a rigid, preferably transparent, material, first and second blood inlets in the housing, a first blood treatment element inside the housing comprising a layer of porous defoaming material and a layer of non-woven depth filter material, and a second blood treatment element inside the housing comprising a layer of porous defoaming material and free of any depth filter material. The novel device also includes internal walls for providing two blood flow paths therein, one through the first inlet, the first blood treatment element, a blood collection reservoir defined within the device and a treated blood outlet in the bottom wall of the housing, and the other through the second inlet, the second blood treatment element, the blood collection reservoir and the blood outlet.

Abstract: A filtering device includes a head intended to be permanently installed in a fluid dispensing machine and a disposable canister therefor. A central chamber is formed in the head which chamber is in communication with an inlet port and an outlet port for receiving an unfiltered liquid and supplying a filtered liquid, respectively. The disposable canister has a flask shaped main body with a flat top and a neck of substantially uniform diameter on the top. The neck fits in the central chamber. A tube extending through the neck defines an annular clearance between the tube and the interior of the neck which annular clearance is in fluid communication with the inlet port. The opening into the tube located at the top of the neck is in fluid communication with the outlet port in the head. A pair of tab receptacle on the head and a complementary pair of tabs on the canister are engageable with one another by 1/4 rotation of the canister to lock the canister to the head.

Abstract: A filter element for use in a filter apparatus comprises a plurality of cylindrical filter units coaxially aligned end-to-end to form an integral tubular structure, a top end cap and a bottom end cap on the upper opening and the lower opening, respectively, of said tubular structure, and a cylindrical displacement member disposed coaxially within the tubular structure with a small clearance therebetween.

Abstract: A potable water filter comprising a housing having an inlet and first and second outlets, a tube in the housing having a peripheral wall, a passage extending through the tube, and an opening in the peripheral wall leading to the passage, a tubular pleated filter element surrounding the tube and a carbon filter element within the tube. Some of the water from the inlet flows through the tubular filter element and the carbon filter element to the second outlet. Another portion of the water from the inlet flows along the tubular filter element to flush the tubular filter element and then flows out the first outlet.

Abstract: A reverse osmosis sytsem for water treatment including a head member adapted to be fixedly mounted in a fliud supply line, an integral disposable reverse osmosis unit inserted into said head member, said osmosis unit including a pressure vessel, an end member attached to said pressure vessel and a reverse osmosis membrane module disposed in said pressure vessel and operatively associated with said end member.

Abstract: A unitary device for the treatment and collection of blood from two different sources during a surgical procedure comprises a hollow housing made of a rigid, preferably transparent, material, first and second blood inlets in the housing, a first blood treatment element inside the housing comprising a layer of porous defoaming material and a layer of non-woven depth filter material, and a second blood treatment element inside the housing comprising a layer of porous defoaming material and free of any depth filter material. The novel device also includes internal walls for providing two blood flow paths therein, one through the first inlet, the first blood treatment element, a blood collection reservoir defined within the device and a treated blood outlet in the bottom wall of the housing, and the other through the second inlet, the second blood treatment element, the blood collection reservoir and the blood outlet.

Abstract: A filter device for use in a fuel tank, has a filter body having an upper wall and a lower wall, a guide portion extending through the filter body and having an intake hole at a lower portion of the guide portion near the bottom wall of the filter body, a suction pipe having a lower portion which is inserted into the guide portion, and spring means provided between the suction pipe and the filter body for biasing the filter body toward the bottom wall of the tank body.

Abstract: The invention relates to a filter for regenerating oil, especially from combustion engines, with an exchangeable cylindrical filter-cartridge, being of filter-tissue-paper wrapped tightly around a thin-wall-carton-tube. The filter-cartridge-center is supported by a rubber-tube, being slightly smaller in diameter than the carton-tube. The thin-wall-carton-tube will be ruptured by the oil-pressure existing on the outer circumference of the carton-tube, at such weak places caused by the channels running lengthwise the rubber-tube, making the oil-flow through the filter-cartridge possible. The filtered oil will collect in channels passing to the exit.

Abstract: This disclosure concerns a vessel or housing having a removable domed cover and a horizontal partition in the housing to form separate dirty and clean liquid chambers, and having a single large vertical cylindrical pleated filter cartridge clamped against the lower side of the partition in the dirty liquid chamber in the housing. The filter cartridge has a central perforated tube which axially fits over and is spaced from a vertical outlet duct extending up from the bottom of the housing through an aperture in the partition, which aperture forms an annular opening from the interior of the filter cartridge into the clean liquid chamber in the domed cover. The lower end of the filter cartridge seals to a sleeve around the bottom of the vertical outlet duct. The seals for the top and bottom of the cartridge may comprise integral soft plastisol annuli or ring gaskets in the harder plastisol end discs which seal the ends of the pleats of the filter cartridge and the ends of its central perforated tube.

Abstract: A low-cost, mass-produced oil purifier of plastic, utilizing reverse internal currents to remove impurities, has a sealed housing with upper and lower parts that interfit. The lower housing part has a circular base and a central, upright standpipe open at top and bottom, that is provided with exterior ledges at different levels on which perforated discs are supported. The upper housing part comprises an inverted shell fitted to the base of the lower part, and having an inverted cup depending from its top wall and surrounding the top of the standpipe. At one side of the inverted cup is an oil inlet on the upper housing part. The top perforated disk imparts a swirl to the incoming oil, which passes downward through the disks to a settling chamber at the bottom, and then in a purified state upward through the disks again to the open top of the standpipe, thence down through the standpipe and out at the bottom of the latter.

Abstract: A cartridge fluid filter includes a housing within which are positioned annular, concentrically mounted filter elements that are held together in relative position by first and second end caps to define a gap between the filter elements. A filter core is positioned within the gap that communicates with an outlet defined in the first end cap. An annular reinforcing disc is mounted in the first end cap to support the end cap around the outlet.

Abstract: A fuel treatment device for use in fuel system of an internal combustion engine comprises a casing adapted to be secured, in use, to a mounting which defines a fuel inlet and an outlet. A fuel treatment element is located in the casing and a wall of the casing is displaceable by hand to achieve a pumping action.

Abstract: Disclosed is a cylindrical closed strainer molded of a plastic in a unitary structure, which comprises a top plate, a bottom plate disposed opposite said top plate at a fixed interval therefrom and a cylindrical net stretched between the peripheries of said top plate and bottom plate, said top plate being possessed of snap fastening means on the upper surface thereof and provided with a through hole which has a diameter larger than the outside diameter of a suction pipe intended to be connected with the strainer body and is provided on the inner circumference of said through hole with a thin seal member coaxially containing a circular hole of a diameter smaller than said outside diameter of the suction pipe. Said suction pipe is provided with a flange which is adapted to rest stably on the upper surface of said top plate.

Abstract: A device and method of operation for receiving retrieved blood from the surgical field of a patient and treating the blood so that it is in condition for direct or indirect return to the patient. The device is comprised of a housing adapted to receive a relatively large volume of blood, which when received is removed of air bubbles and other foreign matter. The received blood flows smoothly both to and from a fibrous membrane interposed in the path of blood flow thereby avoiding bubbling and damage to the blood. Significantly, means within the housing are provided to inhibit clotting of the blood within the housing.

Abstract: A water cleaner is formed of a hollow casing having a water inlet and a water outlet. An elongated tubing is secured to the interior of the casing and contains an inlet and an outlet and means for coupling the tubing inlet to the water inlet and the tubing outlet to the water outlet. A screen surrounds the exterior of the tubing and is secured thereto. A filter element surrounds the screen for removing impurities from the water passing from the casing inlet to the casing outlet.

Abstract: A longitudinally extending housing contains an element for filtering a liquid and an element for heating the liquid. The housing is internally divided into a longitudinally extending generally cylindrical outer chamber, containing the filter element, and a similarly extending cylindrical inner chamber, containing the heating element. The flow of filtered liquid from the outer chamber to the inner chamber is permitted only by having the liquid flow over a generally cylindrical wall defining a weir, which divides the housing into the two chambers. The weir cooperates with a specially formed conical configuration on an end of the housing to define a liquid flow path between the chambers in which undissolved air may be removed from the housing. After entering the inner chamber the filtered liquid flows along the length of the axially directed heating element and the heated and filtered liquid is thereafter discharged from the housing.

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.