Abstract: A fuel filter for an internal combustion engine of a motor vehicle, comprising a divisible housing having a fuel inlet opening and an outflow opening, a replaceable ring filter element (3) mounted in the housing so that flow can pass through it radially from the outside to the inside, having an end disk on one end, namely a first end disk (13) and a second end disk, an alignment of the longitudinal axis of the ring filter element (3) that is upright during filter operation, an outflow channel (5) which leads from the bottom to the top out of the fuel outflow opening in the radial interior of the ring filter element (3), carrying filtered fuel away in a tube (4), a centrally arranged vent channel (6) that leads outward from the bottom and is closed at the top, with a throttle opening (7) in the upper closure, whereby this throttle opening (7) opens into the clean space or the crude space of the filter, should be designed so that the internal combustion engine cannot be operated when the ring filter insert

Abstract: A filter cartridge which comprises a filter pack (3) formed by a flat filtering medium, a tubular sheath (2) with a perforated wall, surrounding the filtering pack, and two respective end caps (5) having a first disc (16) and a second disc (17) placed one on top of the other, each made from thermoplastic, with a portion of the filtering pack (3) situated along one of its edges and a portion of the sheath (2) situated along one of its edges (33) which are embedded in the second disc (17), with the first disc (16) having a peripheral rim (19) which surrounds the relevant portion of the sheath (2) and with the sheath having a shoulder (34) opposite the edge of the rim (19) of the first disc (16).

Abstract: This invention relates to a filter assembly for removing material that is entrained in a gas stream. The filter assembly comprises a housing which comprises head and body parts, with an inlet port in the head part for a gas stream to flow into the housing, the head and body parts having formations which enable them to be connected to one another and separated by relative rotation. The filter assembly further comprises a filter element which can be fitted within the housing. The filter element comprises a wall of a filtration medium which defines a hollow space for a gas stream to flow from the space through the wall to be filtered, and an end cap with an inlet which can be sealed to the inlet port in the head part of the housing to provide a flow path for a gas stream to be supplied from the inlet port in the housing to the said space.

Abstract: A top or bottom mounted, in-line, in-tank return line filter element is mounted in a hydraulic reservoir. The reservoir includes a holding tank, at least one outlet extending from and one return line extending to the reservoir, an in-tank return line within the reservoir and extending to one return line, and an in-tank return line filter element mounted within the in-tank return line. The in-tank return line filter element includes an end cap, a filter media and a by-pass valve coupled thereto. The end cap includes a central fluid opening, a mounting surface for the filter media, and a peripheral attaching mechanism for attaching the filter element to the in-tank return line to form a filter assembly. The mounting surface is positioned between the central opening and the attaching mechanism such that an in-line, in-tank filter element is provided.

Abstract: A fluid filtration system includes a filter receiver located in a fluid reservoir housing and a replaceable filter module adapted to mount in the filter receiver. Fluid to be filtered is exposed to a filter media included in the filter module and mounted in a filter chamber provided in the filter receiver. The filtered fluid is discharged into a fluid reservoir located in the fluid reservoir housing and outside the filter receiver. Fluid is then pumped from the fluid reservoir to a fluid user and fluid discharged from the filter user is conducted to the filter chamber for filtration in the filter media.

Abstract: A filtration module (10) is provided which includes a manifold (12), a filter cartridge (16) and a bowl (14) which houses the filter cartridge (16). The filter cartridge (16) and bowl (14) are connected to each other by a key (30) which is secured to flat surfaces (38) on the cartridge (16) to form a unitary construction. The filter cartridge (16) and bowl (14) are in fluid communication with the manifold (12) in a manner which prevents mixing of a fluid feed to the module (10) and a permeate removed from the module (10).

Abstract: An improved filtering bag combination having an increased area of filtering and a longer life of use. The improved structure includes a filtering member with multiple folds to cover a support formed of a plurality of rods. The rods of the support have a plurality of bracing members to support the filtering member, two ends of the support are mounted with two shaping pieces, and an upper and lower lid for fixing and sealing. The bracing members are all serrated members, and are provided on the outside with numerous equidistantly separated crests and corresponding hollows and on the inner side with a connecting base. The crests each have a clamping notch for placing a rod, so that the bracing members can be transversely arranged within a circle formed by encircling the rods of the support.

Abstract: The invention relates to a filter device (10) for filtering a liquid, in particular a hydraulic oil, having a substantially cylindrical filter housing (12), which accommodates a filter element (30) and can be closed off by means of a cover (18), the filter element (30) having an associated untreated region (70) with an inlet (22) for supplying liquid which is to be filtered and a clean region (74) with an outlet (26) for removing filtered liquid, and the filter element (30) comprising an end plate (58) which is remote from the cover (18) and on which there is mounted a radially acting sealing element (62) for sealing the untreated region (70) of the filter element (30).

Abstract: A trash trap for liquid manure disposal systems that has a cylindrical housing with an open interior. The housing has a first end with an inlet port and an outlet port in its side wall. The cylindrical housing also has a removable cylindrical filter that has a fluid opening in its side walls and is detachably mounted along a centerline of the housing. The cylindrical filter has a diameter that is less than the inner diameter of the housing so that fluid can enter the housing through the inlet port and exit through the outlet port. Also, on the second end of the housing there is a detachable cap around an access opening.

Abstract: A fuel-water separation filtration system for filtering fuel and for separating water out of the fuel includes a housing assembly, a filter element assembly, and a closing lid. The housing assembly includes a unitary molded housing, a plurality of flow connection fittings that are spin welded into the housing, and a standpipe that is spin welded to the housing. The filter element assembly includes a cover and an endplate and filter media with one end bonded to the cover and an opposite end bonded to the endplate. The standpipe includes an attachment portion that extends beyond the upper end of the filter element assembly and the closing lid is threadedly attached to the attachment portion for closing the housing assembly. The filtration system requires pressurization for proper operation and the filtration system cannot be pressurized without the filter element assembly being installed.

Abstract: A one-piece, molded plastic end cap (1) is designed for installation in a diesel engine fuel filter. The end cap (1) comprises a disk-shaped filter support component (2), with a top portion adhesively connected to the fuel filter center tube (8) and filter media (9), and a bottom portion which includes a downward-facing, slotted, cylindrical nipple (3). The distal end of the nipple (3) protrudes slightly from the bottom of the fuel filter housing (7), and is threaded to accept a drain plug/self-venting valve (10). The self-venting valve (10) is designed such that, the internal fuel filter vacuum is broken through a capillary-type action, and air subsequently enters the filter, and contaminants (primarily water) are able to drain freely.

Abstract: A filter having a thin metal flanged embedded within an open wall portion of a transparent plastic housing. The metal flange is permanently and non-detachably embedded within the wall and connected to a filter cover plate to create a fluid-tight seal. The resulting transparent spin-on filter allows a user to visually inspect the condition of the circulating fluid and filter without removing the filter from an operating system.

Abstract: The invention relates to a liquid filter, especially an oil filter, for cleaning lubricating oil, especially for internal combustion engines of automobiles, comprising an upright filter housing which contains a receiving area for a ring-shaped filter insert that is inserted into said receiving area, an inlet channel for unclean liquid, an outlet for clean liquid, and an additional discharge channel which is exposed when the ring-shaped filter insert is removed. An eccentrically projecting pin is moulded to a lower end plate and sealingly penetrates an opening of the discharge channel when the ring-shaped filter insert is introduced into the filter housing.

Abstract: A filter assembly includes a filter cap having a filter chamber defined therein. The filter cap includes a side wall having an opening defined therein. A fluid filter is positioned in the filter chamber. A spring-loaded detent button is movably secured to the filter cap and extends into the filter chamber. When the detent button is depressed by a user, the end of the detent button positioned in the filter chamber contacts the fluid filter thereby releasing the fluid filter from the filter cap. An associated method for replacing a fluid filter is also disclosed.

Abstract: A thermostatic valve for mixing hot water and cold water includes a valve body defining a first inlet, a second inlet, a mixing chamber, a first passageway between the first inlet and the mixing chamber, and a second passageway between the second inlet and the mixing chamber. The thermostatic valve includes first and second flow control assemblies and first and second screen assemblies assembled into the valve body. A first screen assembly is positioned downstream of a first flow control assembly and a second screen assembly is positioned downstream of a second flow control assembly. Each screen assembly is removable from the valve body and includes a screen body having a screening portion with a lower open end and a top portion. The screen assembly includes a closing cap to retain accumulated particulate matter. A retaining clip is used to hold the screen assembly in position within the valve body.

Abstract: A filter apparatus comprises a ring secured to a filter cover so as to engage a center tube extending within a filter element to retain the center tube and the filter element. A method of assembling a filter apparatus is also disclosed.

Abstract: A method of assembling a fluid filter begins with a step of aligning housing shells to form a housing. A seam is defined in an area where the housing shells contact one another. The housing shells surround and enclose a porous filter element, having an edge portion that is substantially parallel to an adjacent side wall of the housing. The next step involves heating the first and second housing shells in the area of the seam, such that the first and second end caps are fused together. Another step of the method involves moving molten plastic, from the seam area of the housing, inwardly to contact the filter element, such that the filter element becomes fixed in position in the housing. Preferably, the molten plastic is arranged to form a circumferential seal around the filter element. A filter made according to the method is also described.

Abstract: A fluid filtration system includes a filter receiver located in a fluid reservoir housing and a replaceable filter module adapted to mount in the filter receiver. Fluid to be filtered is exposed to a filter media included in the filter module and mounted in a filter chamber provided in the filter receiver. The filtered fluid is discharged into a fluid reservoir located in the fluid reservoir housing and outside the filter receiver. Low-pressure fluid is then pumped from the fluid reservoir to a fluid user and fluid discharged from the filter user is conducted to the filter chamber for filtration in the filter media.

Abstract: An internal filter that may be installed or removed from the outside of the housing. The internal filter may also cooperate with an inlet passage for a charge pump.

Abstract: An end cap of a filter element has canted fins in an annular space between a filter element and filter housing for imparting a rotary motion to a fluid prior to the fluid passing through the filter element. The end cap includes a plurality of axially extending legs upstream of the fins, which legs engage a nutplate. Spaces between the legs provide an inlet allowing dirty fluid to flow to the outside surfaces of the filter element. The fins remove large particles from the fluid by centrifugal force so that large particles do not add to the contaminant load in the filter elements.

Abstract: A filter element and assembly for fluid applications which require a purging of air, and particularly for applications where the filter element is horizontally oriented (side loaded), where the filter element is rotationally positioned relative to the housing such that a vent orifice is properly located for venting air from the filter element as the element fills with fluid. The housing includes a cylindrical body with a closed end a threaded open end, and a threaded, cup-shaped cover which is screwed down onto the housing. The filter element and housing include i) cooperating retaining devices which temporarily couple the filter element to the housing cover when the element is initially inserted into the housing and the cover is initially screwed onto the housing; and ii) cooperating orientation devices which rotationally orient the filter element in the housing as the housing cover is further and fully screwed down onto the housing.

Abstract: A filtering apparatus including a filter cap with a releasable filter element is disclosed herein. The filter cap defines a filter chamber and includes an upper wall having an opening therein. An oil filter element is positioned in the filter chamber. A snap connection is provided within the filter chamber for releasable connecting the oil filter to the filter cap. Finally, an actuator having a portion extending through the opening into the filter chamber is provided. The actuator is operable is operable to eject the filter element from the filter chamber. The actuator is movably secured to the filter cap and is separable from the oil filter upon ejection of the filter element from the filter chamber.

Abstract: The invention relates to a filtering device (1) comprising a tubular filter (6). One end of said filter is supported on a base part (2) and the other end is supported on a cupped filter housing (3). The filter housing overlaps the filter (6) with a radial clearance (7) and is detachably connected via the edge (4) thereof to the base part (2). The base part (2) comprises a first flow-through channel (33) which is connected to the clearance (7) and comprises a second flow-through channel (34) which is connected to a cavity (35) of the filter (6). The aim of the invention is to make it possible to attach or detach the filter housing (3) even when tight spatial relationships are present in the vicinity of the filter housing (3) or in order to hold the filter (6) in position against the filter housing (3).

Abstract: A fluid filtration system includes a filter receiver located in a fluid reservoir housing and a replaceable filter module adapted to mount in the filter receiver. Fluid to be filtered is exposed to a filter media included in the filter module and mounted in a filter chamber provided in the filter receiver. The filtered fluid is discharged into a fluid reservoir located in the fluid reservoir housing and outside the filter receiver. Low-pressure fluid is then pumped from the fluid reservoir to a fluid user and fluid discharged from the filter user is conducted to the filter chamber for filtration in the filter media.

Abstract: A drinking element (1) for the drinking of a liquid comprises an outlet (3,10) for receipt in the mouth of a drinker of the liquid whereby the element (1) has one or more hollow filtration membranes (5) that are positionable with respect to the liquid and the outlet (3, 10) such that, when the drinker applies a suction force to the outlet (3, 10) liquid passes to the outlet (3, 10) through the one or more membranes (5) where it is filtered.

Abstract: The present invention relates to a filter assembly for a washing machine having a simple structure to separate dirt or particles involved in water. The present invention includes a filter case and a filter loaded in the filter case. The filter case includes inlet and outlet on a circumference and an opening inside to make the inlet and outlet communicate with each other. And, the filter includes a cap fitted to the filter case, a shaft extending from a bottom of the cap, and an extension extending from an end of the shaft, the extension disposed to confront the opening to filter particles in water, the extension having a protrusion protruding from one side opposite to the cap.

Abstract: A separation device, such as a filter or separation line apparatus, and method of making the same.

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

Abstract: A fluid filter assembly includes a shroud containing a filter module. A fluid pump is coupled to the shroud and operated to draw transmission fluid from a fluid reservoir in a transaxle housing into the shroud and through the filter module in the shroud to produce a stream of filtered transmission fluid to be pumped to a transmission or other destination in the transaxle housing. The shroud includes a filter housing containing the filter module and a mount flange cantilevered to the filter housing and adapted to mate with the fluid pump.

Abstract: A filter for filtering liquids, especially fuel, which includes a concentric housing, an unfiltered liquid inlet, and filtered fluid outlet, and a backflow member. A concentric filter element, with a dirt collecting chamber in the lowermost part thereof, is disposed in the housing, which is closed with a cover. The housing also contains a riser pipe having a return bore hole in the uppermost part thereof, as well as a return pipe. An intermediate pipe, which is sealingly closed by the cover, is disposed above the riser pipe, and the filter element is removably attached to the intermediate pipe.

Abstract: The invention relates to a liquid filter, especially an oil filter, for cleaning lubricating oil, especially for internal combustion engines of automobiles, comprising an upright filter housing which contains a receiving area for a ring-shaped filter insert that is inserted into said receiving area, an inlet channel for unclean liquid, an outlet for clean liquid, and an additional discharge channel which is exposed when the ring-shaped filter insert is removed. An eccentrically projecting pin is moulded to a lower end plate and sealingly penetrates an opening of the discharge channel when the ring-shaped filter insert is introduced into the filter housing.

Abstract: A self-cleaning water filter, coupled to a water flow having particulates therein, that includes a pair of canisters, each having a cylindrical wedge wire water filter screen. An elongated brush running the length of the screen is disposed between two confining walls also running the length of the screen to form a chamber. A elongated partition, including two sets of apertures, is used, along with the elongated brush, to divide the chamber into two particulate dislodge chambers and a drain subchamber. A drain is in fluid communication with the drain subchamber. During cleaning, the drain is opened and the screen is rotated against the brush for liberating the particulate contaminants and a limited amount of the water flow into the two dislodge subchambers. The particulate contaminants and the limited amount of water then pass through the apertures at a high velocity and into the drain a subchamber which exits through the drain.

Abstract: A filter assembly for filtering water from an external source, the filter assembly including a manifold assembly mountable to an appliance and being in fluid communication with the external source and a cartridge assembly, the cartridge assembly being replaceably fluidly couplable to the manifold assembly, the filter assembly includes a first and a second fluid tube, the first fluid tube being fluidly couplable to the external source being an unfiltered fluid inlet, the second fluid tube being a filtered fluid outlet, the first and the second fluid tubes each having a barbed end for coupling to the manifold assembly.

Abstract: A filter (20) has a removable cover (30) releasably engaging and gripping an end cap (40) of a filter element (34) including upon removal from the filter housing (22). The cover has a plurality of axially extending cantilever legs (102, 104) gripping a mushroom-shaped boss (118) on the end cap.

Abstract: A filter assembly includes a filter cap having a filter chamber defined therein. The filter cap includes a side wall having an opening defined therein. A fluid filter is positioned in the filter chamber. A spring-loaded detent button is movably secured to the filter cap and extends into the filter chamber. When the detent button is depressed by a user, the end of the detent button positioned in the filter chamber contacts the fluid filter thereby releasing the fluid filter from the filter cap. An associated method for replacing a fluid filter is also disclosed.

Abstract: A liquid filter mainly intended for oil or fuel in internal combustion engines, in which the filter comprises a replaceable filter cartridge (17). The filter cartridge is housed in a housing having an essentially central symmetry comprising a housing base and a cover which is designed to be screwed on. In order to avoid leakage residual liquid when the filter housing is opened, especially if the liquid filter is mounted horizontally, a drain screw (22) is actuated before the housing is opened, and in order to achieve the highest possible degree of drainage, the drain screw is moved to the lowest possible position by rotating a threaded member (11) by at most 360°. Upon rotation of the threaded member, a sealing ring (13) ensures tightness in the base (10) of the housing in an area “a”. After all the liquid has drained out of the housing through the drain opening (23), the filter housing can then be opened to enable replacement of the filter cartridge without danger of leakage.

Abstract: A disposable filter cartridge, in which the entire filter cartridge is disposable. The filter cartridge includes a tubular filter element substantially permanently retained to a lid such that the filter element cannot be removed from the lid without extreme force. The filter element includes a ring of filter media having ends potted in cup shaped end caps. The lid includes a central hub that is inserted through the opening in on of the end caps and ultrasonically deformed or flared radially outward to provide a lip that engages the top end cap for axial retention. The filter element is free floating and can be moved or tilted a small degree axially and can also be freely rotated relative to the lid.

Abstract: A trash trap for liquid manure disposal systems that has cylindrical housing with an open interior. The housing has a first end with an inlet port and an outlet port in its side wall. The cylindrical housing also has a removable cylindrical filter that has a fluid opening in its side walls and is detachably mounted along a centerline of the housing. The cylindrical filter has a diameter that is less than the inner diameter of the housing so that fluid can enter the housing through the inlet port and exit through the outlet port. Also, on the second end of the housing there is a detachable cap around an access opening.

Abstract: An oil filter apparatus comprises a housing formed to include an interior region and an aperture, a drainage valve positioned in the interior region for movement relative to the housing between an opened position allowing oil to drain out of the interior region through the aperture and a closed position blocking drainage of oil out of the interior region through the aperture, a filter module positioned in the interior region to filter oil, a valve actuator coupled to the filter module, and an anti-rotation device positioned to block rotation of the filter module relative to the housing to guide the valve actuator into communication with the drainage valve to move the drainage valve to the closed position when the filter module is installed in the interior region.

Abstract: The invention relates to a fluid filter, such as an oil filter for an internal combustion engine, comprising a filter housing which can be closed by a screw lid, a filter element and a central, approximately tubular component which projects into the interior of the filter, whereby the central component has bearing surfaces which are used to fix said component into the filter, so that it cannot rotate. The central component and the filter housing have projections and corresponding undercuts which interact with the projections, in order to fix the central component using a detent or snap-fit connection.

Abstract: A filter unit comprises a housing through a wall of which is formed an aperture, an annular insert of a plastics material located in said aperture to make sealing contact with the defining walls of the aperture, a closure member removably mounted in, to make sealing engagement with, the annular insert, and a filter cartridge mounted on the closure member to extend into the housing, the closure member and filter cartridge being locatable on and removable from the housing as a unit.

Abstract: A disposable filter cartridge, in which the entire filter cartridge is disposable. The filter cartridge includes a tubular filter element substantially permanently retained to a lid such that the filter element cannot be removed from the lid without extreme force. The filter element includes a ring of filter media having ends potted in cup shaped end caps. The lid includes a central hub that is inserted through the opening in on of the end caps and ultrasonically deformed or flared radially outward to provide a lip that engages the top end cap for axial retention. The filter element is free floating and can be moved or tilted a small degree axially and can also be freely rotated relative to the lid.

Abstract: There is provided an oil filter capable of preliminarily confirming a correct assembling of a valve body to a holder and preventing the valve body from being abnormally assembled.

Abstract: A fuel filter cartridge assembly employs a two piece housing to house a replaceable filter unit. The filter cartridge assembly incorporates a key system to ensure compatibility of a replacement filter unit for a given cartridge assembly. Keys formed on the filter unit cooperate with keyways formed in the housing to ensure that only filter units having key structures may be used. Each key may have a different angular position, angular dimension and radial projection. By varying the dimensions of the keys and/or the positions and/or the number of keys, a composite compatibility matrix comprising an infinite number of configuration sets are available to differentiate between filter units having differing flow capacities, filter media, disposal options or other characteristics.

Abstract: Liquid filter arrangement with interchangeable filter element and including a pot-like filter housing in which the filter element is disassemblably inserted between a liquid inlet to the chamber and an outlet situated below, in the lower section of the filter housing, for filtered liquid from the chamber. In the liquid chamber is arranged a central tube about which is arranged the filter element which is provided at the bottom with an annular end piece sealingly surrounding the central tube, and is provided upwards with an end disc by which the filter element is fastened to a lid fastened sealingly in the upper section of the filter housing. When the filter element is in its fitted position, the end piece blocks the inlet to a draining duct in the central tube, which duct leads to a draining outlet from the chamber.

Abstract: A fuel filter cartridge assembly employs a two piece housing to house a disposable, incineratable filter unit. The filter unit is constructed to cooperate with the sealing mechanism of the housing to seal the assembled cartridge against a fuel inlet/outlet conduit. Tabs formed on the filter unit end cap cooperate with slots formed in the housing to ensure that only compatible filter units are used.

Abstract: A sump filter assembly wherein a filter element that may or may not be removably disposed in a filter housing is sealingly engaged with the filter housing by way of a sealing member to separate the filter housing cavity between dirty and clean spaces. The filter element is provided with filtration material with a portion thereof embedded in the filter element, the filter element is further provided with a sealing member retaining shoulder to ensure proper placement of the sealing member in the assembly, with the sealing member being an O-ring or gasket member, among other things.

Abstract: An improvement in the fabrication and bonding of dead-end and cross-flow thermoplastic filtration modules is disclosed whereby two housing parts are bonded to each other and to a filtration membrane by an L-shaped plastic melt.

Abstract: An improved dialysis cell and method for using the same to achieve shorter dialysis times wherein the two dialysis solutions used in the dialysis are brought into greater mutual contact with a semipermeable membrane, requiring the use of a smaller volume of dialysis. Because the dialysis cell is substantially rigid and in the shape of a test tube it can be used with an automated pipettor.

Abstract: In a fluid filter with a housing and a filter element replaceably located in said housing, and with a filter by pads valve having a valve body held in the housing that is movable against the action of a spring from the closed position in which it cooperates with a sealing surface, into an open position in which it permits a fluid flow to bypass the filter element. The invention proposes that the sealing surface associated with the valve body be formed by the replaceable filter element.