Abstract: Described is a filter cartridge having a clean side anti-drainback valve. The filter cartridge includes an annular filter element having a hollow core with an annular valve support 40 disposed therein. The clean side anti-drainback valve includes a valve 60 and an annular valve seat 70 having a base, a central opening, and a peripheral flange 82. The peripheral flange is mounted atop an upper surface 90 of the annular valve support such that the central opening is in alignment with the passage 50 leading out of the filter cartridge. The valve 60 is mounted on the valve seat and is biased by a coil spring to a normally closed position so that when the engine is not running clean side oil is retained within the filter cartridge. A dirty side anti-drainback valve can also be included.

Abstract: A fuel filter includes a housing (412) with a removable element (424) mounted therein. The housing has an inlet port (414) in direct fluid communication with a chamber (418). A first outlet port (416) is in direct fluid communication with a central standpipe (422). The standpipe has a flow element (442) movable therein for controlling the condition of flow openings (436) in the standpipe. The cover further includes a cover projection (482) for supporting a projection (478) on the end cap (460) of the filter element, which opens flow into the standpipe only when the element is installed. The removable element can include first and second filter media rings (426, 716) where fluid is introduced between the rings and flows radially inward through the first media to the first outlet port (416), and radially outward through the second media ring to a second outlet port (710).

Abstract: The filter head and filter housing define a liquid flow inlet path, a first liquid flow outlet path, and a second liquid flow outlet path. A filter media construction is positioned within the housing. The filter media construction, in combination with the housing, defines an unfiltered liquid volume, and a filtered liquid volume. A first liquid flow inlet path directs liquid from the liquid flow inlet to the unfiltered liquid volume. A first liquid flow outlet path directs liquid flow from the filtered liquid volume to the first liquid flow outlet. A second liquid flow outlet path directs liquid flow from the filtered liquid volume to the second liquid flow outlet. A first valve assembly selectively opens the second liquid flow path to passage of liquid therethrough in response to a first selected liquid pressure level within the filtered liquid volume.

Abstract: The filter cartridge assembly has a valve body having an interior flow passage, a filter across the interior flow passage, and a check valve assembly in the valve body. The filter removes particulates as small as 0.003 microns. A check valve element adjacent to a valve seat in the interior flow passage has a check valve poppet and a stem. The check valve poppet has a relatively narrow neck, and the check valve poppet is tapered inwardly from the outlet end toward the neck at an oblique angle relative to the longitudinal axis of the valve body that is substantially equal to the oblique angle of the annular valve seat.

Abstract: A fuel filter comprises a head (96) having an inlet (100) and an outlet (102). The head is connected to an element (266) by a nipple portion (186) which has a valve element (196) therein. An actuating projection (222, 272) is engageable with the valve element to open flow through said nipple portion when the correct element is attached thereto. The actuating projection is further supported on a central portion (220, 276) which prevents connection to a nipple portion that extends too far into the element. According to a further embodiment, the filter includes a housing (412) with a removable element (424) mounted therein. The housing has an inlet port (414) in direct fluid communication with a chamber (418). The outlet port (416) is in direct fluid communication with a central standpipe (422). The standpipe has a flow element (442) movable therein for controlling the condition of flow openings (436) in the standpipe.

Abstract: A filter includes a housing having an inlet and an outlet. A filter core including a filter media is movably disposed within the housing with the inlet and the outlet in fluid communication with opposite sides of the core and a pressure responsive surface in fluid communication with said inlet. The filter also includes a valve supported on the filter core and moveable into a sealing position to prevent fluid from passing to the outlet when said core moves within said housing response to fluid pressure acting against said pressure responsive surface.

Abstract: A fuel filter for a fuel dispensing pump comprises a shell having a closed end and an open end. A plate is fixed in the open end of the shell. The plate has one or more fuel inlet openings and a centrally located fuel outlet opening. A rigid annular pervious core in located within the shell. A water absorbing media is disposed about the core. A first end cap closes the inner end of the core and the water absorbing media. A second end cap closes the outer end of the core and water absorbing media. The second end cap has a central opening there through. A valve cylinder cup is secured to the second end cap and extends within the central opening in the core. The valve cylinder cup has at least one opening in the side wall thereof. A valve piston is slidably disposed and guided in the valve cylinder cup and movable to open and close the openings in the sidewall of the valve cylinder cup.

Abstract: A filter device has a bypass valve which releases a fluid-conveying path to an outlet when a filter element becomes clogged. The bypass valve includes a closure part on which at least one closure spring acts. To adjust the spring pretension and the opening force for the closure part, an adjusting device is provided for adjusting the opening force of the closure spring. The filter device can be economically adapted without any structural modifications to very different applications in a predetermined pressure range.

Abstract: The novel filtration system for zebra mussels is comprised of an unit that is designed to allow users to prevent the infiltration of zebra mussels into drinking water systems having their intake pipes located in surface waters that are infested with the zebra mussels and their eggs. The filtration system for zebra mussels is comprised of a plurality of filters that include an inner pleated micron filter, and a middle wire frame for durability and an outer, course metallic screen. The filtration system is the form of a circular unit that is fitted around the head of a foot valve of the water intake line. A circular plate is located at the top and the bottom of the filters and is held together as a single unit with rods connecting the top and bottom circular plates.

Abstract: The apparatus treats storm water and includes a cylindrical basket that has a housing with a circumferentially extending air slot near the base of the housing. The basket contains an annular bed of absorbent material surrounded by a filter cartridge. Water flows radially inward through the filter and the bed into a cylindrical inner drainage space which has an outlet at its lower end, covered by a float valve. The drainage space is also in fluid communication with a one-way valve that allows air to pass from the housing into the environment. During operation, the float valve lifts when the water level rises and air is expelled from the drainage space through the one-way valve. As a result, water is continuously siphoned through the basket apparatus. When the water level drops, air enters through the air inlet slot of the housing and rises in turbulent fashion along the filter, scouring the filter and dislodging particulates.

Abstract: A filter for fuel and the like comprising an inner filter element and an outer metal filter can which allows the element and can to work together so that when the filter can is removed from the dispensing apparatus, the filter element springs closed and locks against the filter can so that no fuel is spilled. Additionally, the filter can grasps the filter element and pulls it from the dispensing apparatus.

Abstract: A float actuated water level control valve has a sliding valve tube depending from a float to meter the amount of water flow through the valve proportionally in response to the position of the float. The valve is especially useful for controlling the water level in an aquarium overflow filter system. The valve inlet has an adjustable flow area which is defined as the area between a lower edge of the sliding valve tube and an upper edge of a drain. The configuration of the lower edge of the sliding valve tube and the upper edge of the drain are selected to provide increased flow area linear to the position of the float. The valve inlet is submerged, and drain gurgling sounds are thereby muffled. In addition, the valve maintains the water level within the reservoir at a height above the valve inlet, which is especially useful for reducing splashing sounds from water spilling over an overflow wall in an aquarium.

Abstract: An under counter dish washing machine has an upper spray assembly with a spray base recessed at the top of the wash compartment. An enclosed control housing is provided around the recess to house various controls in order to make use of what is otherwise wasted space. The sump of the machine is covered by a screen having an opening in which a pump filter moves up and down to open and close the drain opening. The filter has a perforated body so that all water draining to the sump must pass through either the screen openings or the perforations of the pump filter. The supply hose which delivers water to the machine is relieved from constant water pressure by a solenoid valve which closes except during a fill cycle of the machine.

Abstract: A filter assembly including a filter housing having a standpipe extending upwardly therethrough, in which is located a spring-biased flow element, and about which is received a replaceable filter element. A screw threaded cover is removably attached to the housing. The filter element includes an upper endcap, a center tube, a lower endcap and cylindrical filter media around the center tube. The lower endcap includes a central opening which receives upwardly therethrough the standpipe in sealed relation. A separate actuator with a projection formed to extend therefrom is located in the center tube, either fixedly or movably, below the upper endcap. When the filter element is placed over the standpipe, and the cover attached to the housing, the projection on the actuator pushes down against the spring-biased flow element, putting cavities formed in the flow element and openings formed in the standpipe in fluid communication.

Abstract: A spin-on filter including a combination anti-drainback and bypass valve is disclosed herein. The valve includes an annular valve support disposed between a filter element and an end plate of the filter. The valve support has an inner sleeve portion which seats about a central outlet of the end plate and an outer sleeve portion with holes therethrough. The valve member has an expandable collar portion which normally seals the bypass holes and functions as a bypass valve and a skirt portion with normally seals the inlet holes in the end plate and functions as an anti-drainback valve. The valve member is preferably made of a low swell silicone material which requires higher oil pressures to bypass the filter at low starting oil temperatures than at higher operating oil temperatures.

Abstract: A brewing pot for tea includes a container including an upper portion having a top rim defining at least one cavity, and a lower portion defining a chamber, and an abutting edge formed between the upper portion and the lower portion. A supporting base supported on the abutting edge includes an upright post. A cylindrical body is slidably mounted on the supporting base and includes a top portion formed with an annular flange and a bottom portion defining a socket. At least one block is formed on the annular flange and abuts on the top rim of the container, and a control ball is received in the socket. The cylindrical body and the supporting base can be rotated relative to the container to a position where the block is received in the cavity such that the body can be moved downward relative to the supporting base while the control ball can be moved toward the post such that the control ball can be urged by the post to rise from the socket.

Abstract: A fuel filter assembly includes a housing (12) with a removable element (24) mounted therein. The housing has an inlet port (14) in direct fluid communication with a chamber (18). The outlet port (16) is in direct fluid communication with a central standpipe (22). The standpipe has a flow element (42) movable therein for controlling the condition of flow openings (36) in the standpipe. The element includes projections (88) for engaging recesses (90) in a cover (28) to selectively latch the element and cover together. The cover further includes a cover projection (82) for supporting a projection (78) on end cap (60) of the filter element, which opens flow into the standpipe only when the element is installed. When the element is removed, the flow element prevents the introduction of contaminants into the standpipe.

Abstract: A tea maker structure is disclosed. It includes a percolator cup as an upper layer of the tea maker and a tea cup as a lower layer of the tea maker. A bottom of the percolator cup is formed with a water outlet communicating with the tea cup. A filter mesh is disposed above the water outlet to prevent tea grounds from blocking the water outlet. The opening/closing of the water outlet is controlled by a controlling mechanism coaxially disposed in the percolator cup, whereby the tea can flow into the tea cup with the tea grounds remaining in the percolator cup. Also, this tea maker is prevented from falling down due to improper application.

Abstract: A gas elimination device for cellular fluids has a cylindrical chamber that is divided radially into two parts by a cylindrical filter centrally located in the chamber. The fluid inlet is directed tangentially to the outer part of the chamber to create a vortex flow. The vortex flow is stopped by passage of the fluid through the filter, and gas bubbles that have formed rise to the top of the outer part of the chamber. A hydrophobic membrane covers the top of the chamber and allows the gas to exit the chamber to the atmosphere. A one way valve formed in a two part cap covering the chamber prevents flow of air into the chamber. A float valve stops flow when the chamber fills with air.

Abstract: A filter cartridge has an annular filter dement retained within a housing by an end plate. The end plate has a central outlet and a plurality of inlet holes mounted or the end plate is an annular valve support which supports an annular valve member disposed between the valve support and the filter cartridge. A coil spring urges the annular filter member against the valve member which, in turn, engages the valve support and urges the valve support against the end plate. The valve support has an inner sleeve portion which seats against the end plate and an outer sleeve portion with holes therethrough. The valve member has an expandable collar portion which normally seals the bypass holes and a skirt portion which normally seals the inlet holes. When the filter is filtering lubricating oil for an internal combustion engine, the skirt is deflected by pressurized lubricating oil and flows around and through the filter element before passing out of the central outlet in the end plate.

Abstract: An edge filter for use with a variable-displacement pump control is disclosed. The edge filter comprises a first portion disposed between a source of hydraulic actuating fluid and an orifice having a first flow area. The first portion has an outer circumference defining a radial gap within a bore. The gap has a predetermined gap width less than a diameter of the orifice.

Abstract: A cleaner for an atomizer for removing the dust by a rapid flow of the liquid. It comprises a cylindrical case having a valve body urged to a valve seat by a spring, and a cylindrical mesh filter fitted around the valve body and the spring. One end of the mesh filter is urged to the valve seat whereas the other end is supported by a spring seat. The rapid liquid flow collides the mesh filter, thereby removing the dust clogging in the mesh filter.

Abstract: Filtration apparatus for the purification of various oil products such as combustion oil, lubricating oil, hydraulic oil, or transformer oil is disclosed, including a housing, a rigid, hollow core mounted longitudinally within the housing, and filter paper wound around the hollow core so that the oil flows axially through the filter paper in the housing from a high pressure end to the lower pressure end, and in which passages extend between the interior of the hollow core and the filter paper and a valve is provided for establishing fluid communication between the interior of the hollow core and the low pressure end of the filter.

Abstract: An automatic fluid flow control valve and strainer device which provides a constant flow rate of strained fluid despite varying differential pressures and employs a combination of a unitary body with an integrated, removable strainer assembly and a removable flow control valve assembly. The body is essentially in the shape of a "Y" and provides a compact valve with minimum threaded joints and access to the various components thereof with minimum disassembly. The removable strainer assembly is configured and arranged in a manner so that fluid flows from the outside to the inside of a cup-shaped strainer, allowing easier use and cleaning.

Abstract: A housing for use with a removable filter element includes fluid inlet passages and a fluid outlet passage, a plurality of arcuate slots arranged in a generally circular pattern on the housing, the housing including a valve body with bolts passing through the slots securing the valve body to the housing. A threaded boss is formed on the valve body for attachment of a filter element. A number of ports are formed on the valve body in registery with the fluid inlet passages for supplying fluid to the filter element. The boss includes a passageway therethrough communicating with the outlet passage and a check valve in the passageway. A seal is positioned between the housing and the valve body. Turning the filter element in a direction to remove it causes an initial rotation of the bolts in the slots resulting in misalignment of the ports and the fluid inlet passages, blocking flow to the ports.

Abstract: A valve fuel injection including a filter on the valve, the filter includes a filter cloth which is disposed on the circumference of the valve body in such a way that the filter cloth covers the through openings of the valve body. The filter cloth is provided with a sprayed plastic coating except in the area of the through openings in order to fix the filter cloth in its position relative to the through openings. In this way, contamination of the valve interior with plastic particles is avoided. The fuel injection valve is particularly suitable for fuel injection systems of internal combustion engines.

Abstract: A modular compound valve assembly for an automotive oil filter includes a relief valve subassembly and a clean-side anti-drainback valve subassembly sharing a common unitary valve body. In one preferred form, the valve body is formed of a stepped cylinder, wherein axially opposed surfaces of a first step comprise respective seats for first and second springs utilized in the two valve subassemblies. The first spring (for the relief valve) is entirely contained within the valve body, while the second spring (for the anti-drainback valve) is external to the valve body although supported thereon. The second spring is a frustoconically-shaped spring biased between the first step of the valve body and an external circular disc spaced from but fixed to a plunger of the anti-drainback valve.

Abstract: A filter having improved means of positive shutoff employs a rigid tubular fuel pervious core surrounded by flexible filter media that intercepts and resists the passage of particulate matter and water. A tubular retention sleeve is positioned within and in closed communication with the tubular core at one end thereof, the retention sleeve having an integral ball retention portion of reduced internal diameter. An end cap is secured to the other end of the tubular core member and has an annular sealing surface surrounding a flow passageway opening therethrough. A ball is normally positioned within the retention sleeve and in the engagement with the circumferential ball retention seat. When the flexible filter media has absorbed a sufficient quantity of water the pressure differential across the ball forces it to pass through the retention seat and to lodge against the sealing surface of the end cap, thereby closing further flow through the filter.

Abstract: A fuel filter for preventing water and particulate contamination from passing therethrough, the filter having a rigid tubular fuel previous member having a first end and a second end, a flexible filter media surrounding the tubular member through which fuel freely passes from the exterior thereof into the tubular member but which resists the passage of particulate matter and water, a first end cap secured to the tubular member first end having an integral projectile portion extending within the tubular member direction toward the tubular member second end, the projectile portion being severable from the first end cap when differential fuel pressure thereacross reaches a preselected level, and, when severed, a passageway is formed through the first end cap, a second end cap secured to the tubular member second end having a passageway therethrough and having an annular seating surface, the projectile portion being configured to, when severed from the first end cap, engage and close against the annular surface o

Abstract: A reusable liquid filter assembly having a housing having two internally threaded ends and two externally threaded removable end walls. Sealing O-rings are provided on the end walls to bear and seal against bevelled zones on the housing ends. A filter subassembly is positioned in the housing and centered therein by the end walls. A port is provided in one end wall for sampling the filtered liquid. The liquid filter is readily disassembled for cleaning and replacement of all of its components.

Abstract: The problem of protecting a spring (44) of a spring loaded valve member (34) in a filter assembly (10) is solved by providing a valve body (12) defining a valve seat (20), with the valve member movable in the valve body to and from a closed position against the valve seat. The spring is disposed in a cavity (46) in the valve body, the spring biasing the valve member toward its closed position against the valve seat. The cavity has a mouth located in the path of movement of the valve member for closing by the valve member to capture and isolate the spring when the valve member moves to an open position away from the valve seat. A filter bowl (22) is removably attached to the valve body for automatically opening the valve member in response to attaching the bowl to the valve body.

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 filtering apparatus of the invention comprises a filter housing having a water inlet and a water outlet as well as a filter bell dome connected to the housing. A main filter member and thereabove a reversing flow filter member are coaxially arranged on a filter support member located in the interior of the filter bell dome. The filter support member is spirally movable within the filter bell dome. Further, reversing flow filter member cleaning brushes and main filter member cleaning brushes are fixedly mounted in said filter bell dome. In the operating position, the passage through the reversing flow filter is obstructed such that the water to be filtered flows through the main filter member from the exterior to the interior thereof. In the backwashing position, the filter support member is spirally displaced and simultaneously obstructs the direct access to the exterior of the main filter member.

Abstract: A fuel filter with improved means of preventing water and particulate contaminant from passing therethrough including a cannister, a place secured to the cannister open end having a central fluid outlet and fluid inlet openings spaced from the fluid outlet, a rigid tubular fluid pervious member within the cannister having one end in sealed communication with the plate fluid outlet opening, a flexible filter medium surrounding the outer surface of the tubular member through which fuel really passes but which resists the passage of particulate matter and water, a first deformable washer having an opening therethrough secured to the end of the tubular member opposite that atached to the plate, a ball within the cannister and normally in engagement with the first washer, the ball having a diameter slightly greater than the internal diameter of the washer, and an annular seat between the plate fluid outlet opening and the first end of the tubular member, a second deformable washer member supported concentrically o

Abstract: An oil filtering apparatus includes a check valve at the bottom of and within a cylindrical porous filter unit, to pass oil directly into an oil tank in case of clogging of the filter unit or cartridge. Channeling in the check valve inverted cap by-passes flow around the valve within the cap, when the valve is depressed; and a well formed around the cap collects dirt and other particles, within the filter unit lower interior.

Abstract: A device (10) for filtering and directing effluent to one of a plurality of angularly spaced drainfield trenches. The device (10) includes a housing (12) in which a core (14) is received. A filter medium (18) is inserted within the core (14) and extends around an inside of the core (14). Effluent channelled into the core (14) passes outwardly therefrom through a port (52) formed therein. This port is in registration with one of a plurality of ports (54) formed in the housing (12). Selective registration is accomplished by rotating the core (14) relative to the housing (12).

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 shut-off valve sealing system for a removable cartridge-type filter which includes a body having an inlet to conduct fluid to be filtered therethrough to an inlet of the filter cartridge. The body has an outlet to conduct filtered fluid therethrough from an outlet of the filter cartridge when supported on the body, and a central opening in communication with the inlet and the outlet. A seal member is provided on the body about the central opening. A valve member is movably mounted on the body and movable against the seal member to shut off the inlet when the filter cartridge is removed from the body. A retainer member is provided for retaining the seal member on the body, the retainer member projecting beyond the seal member and providing a stop for stopping movement of the valve member.

Abstract: A reusable liquid filter assembly, such as an oil filter, is provided comprising a housing with inlet and outlet ports, filter means removably mounted inside the housing, means for holding the filter means inside the housing having tapered lengthwise slots for increased liquid flow, bypass valve means for providing a passageway between the inlet and outlet ports when the liquid pressure exceeds a predetermined value, means for alternately sealing and opening the housing to remove or insert the filter means, and a plurality of gasket means for permitting the filter assembly to be cooperable with a plurality of engines. An internally threaded nipple is also provided for insertion into the outlet port for changing the size thereof to permit use on a plurality of engines.

Abstract: The present invention related to a filter consisting of a stack 4 of elements 5 comprising one cylindrical side and each element consisting of several isolated sections 23-24 and provided with orifices 35 for communication of its sections with the circumferences of the element and with a rotary distribution valve 37 mounted to rotate coaxially with the cylindrical side and comprising a chamber 22a for the isolation of a first section 23 from any element of the other sections, communicating with this first section through a port of the distribution valve.The form of the port 22a and the layout of the orifices 35 are such that the first sections 23 of only one part of the elements are in communication with the chamber 22a.One application is the manufacture of a filter of small size and high efficiency.

Abstract: A self-cleaning renewable fluid filter that flushes a permanent filter media while the used oil is pumped out by the engine oil pump through a drain in the housing. The fluid filter has an inlet and a drain, a center core with an outlet, a drain valve normally closing the drain, a permanent fluid filter media inbetween the inlet and outlet, a plug for closing the outlet, an actuator for opening the drain valve and an improved bypass valve which bypasses fluid and enables reversal of fluid flow through the filter media during draining for flushing the media. The preferred drain valve actuator is an electric solenoid coil inside of the filter and the improved bypass valve is an annular valve around the center core and inside of a cylinder formed in an inlet end cap of the filter media.

Abstract: A multiple-disc type fluid filter is described wherein the housing includes an outer tubular section, and an inner section having two tubular members with an end plate at one end of one tubular member and securable to an open end of the outer housing section. The two tubular members of the inner housing section include ribs for supporting the filter discs. The end plate and the tubular member to which it is secured are open and constitute one of the filter ports, e.g. the inlet port, and the opposite end of the same tubular member is closed and terminates short of the outer housing section. The second tubular member, which is longitudinally spaced from the closed end of the first tubular member, constitutes the other filter port, e.g. outlet port. The stack of filter discs are all of substantially the same uniform thickness, but there are included a plurality of further discs of non-uniform thickness such as to correct the accumulation of non-uniformities in the latter discs.

Abstract: A discharge valve, especially for liquids, has a tubular body with an inlet and a circumferential outlet. A sleeve is slidable on the body around the outlet and has a large number of holes affording varying flow through the outlet, depending upon the sleeve location. In an extreme or shut-off position of the sleeve, a bearing ring on the body is abutted by a packing ring on the sleeve carrying an O-ring to seal against the bearing ring.

Abstract: A differential pressure valve is proposed for a fuel injection system of an internal combustion engine. The differential pressure valve includes a diaphragm embodied as the movable valve element, which separates two chambers from one another. A fuel supply line discharges into one chamber and a valve seat carrier provided with a valve opening protrudes into this chamber. This chamber also houses a filter element and a valve spring is disposed coaxially with the valve seat carrier between upper and lower spring plates. The filter element is disposed such that a subsequent change in the tension of the valve spring is also possible. To this end, the filter element can engage the upper spring plate on one side in a sealing manner and on the other side can be supported in a sealing manner in a groove of the wall of the chamber (FIG. 1). In order to assure the free mobility of the filter element, it is provided with an elastically deformable area. As shown in FIG.

Abstract: A liquid filter unit can be used to filter fuel and includes a ball which is moved into a position to prevent further fuel flow through the filter unit when a predetermined amount of water is collected in the unit. One form of the unit includes a water soluble membrane anchoring the ball in place. This form of the filter unit can be used in either the vertical or horizontal orientation, and can be used for high fluid flow rates.

Abstract: A filter device comprising a tubular housing with an inlet for the fluid to be filtered in one end of the housing, an outlet for filtrate in the opposite end of the housing and a filter tube mounted inside the housing and extending essentially in the axial direction of the tubular housing. At least part of the filter tube wall forms the filter surface. One end of the filter is openly connected to said inlet, whereas the other end is closed so that an annular feed conduit is formed between the housing and the filter tube. A first valve means is arranged inside the filter tube to shut off the filter tube, during cleaning periods, thereby dividing the filter tube and the filter surface into an upstream part and a downstream part, and forcing the entire filtrate stream to pass through said upstream part of the filter surface into the filtrate conduit.

Abstract: A fluid filtering device for use with a filter body having a chamber open at one end and a fluid inlet and a fluid outlet port in fluid communication with the chamber. The device comprises a housing formed by molding a plastic cap onto one axial end of a tubular cage. A filter element is disposed within the cage while an annular member is nondetachably secured to the other end of the cage to entrap the filter element within the cage. The cage is dimensioned so that upon insertion into the body chamber, the filter element is positioned between the inlet and outlet ports while the cap covers the open end of the chamber. In addition, a fluid bypass valve is contained within the cage and bypasses the fluid flow around the filter element from the fluid inlet to the fluid outlet upon the occurrence of a predetermined differential pressure across the filter element.

Abstract: A fuel filtering system comprises a case having a cartridge-type filter disposed therein, along with a separator which defines a reservoir. Fuel, such as diesel fuel, is adapted to normally enter an inlet to the case, flow through the filter and thence to an outlet of the case for engine consumption purposes. A valve member, having a specific gravity less than water but greater than that of the fuel, is movably mounted adjacent to the outlet. When the level of water in the reservoir exceeds a predetermined level, the valve member will float on the water and move upwardly to at least partially close-off communication of fuel to the outlet to thus adversely affect engine performance whereby the vehicle operator is alerted to the water-in-fuel problem. In a first embodiment of this invention, such valve member comprises a tubular member mounted exteriorly on a tube defining the outlet therein whereas in a second such embodiment the valve member comprises a spherical ball movably mounted in the tubular member.

Abstract: The invention relates to a duplex basket strainerarrangement. Such arrangements include an outer casing having a first basket strainer receptacle at one end thereof, a second basket strainer receptacle at the other end thereof, a center plug receptacle having an inner wall surface and being disposed between the first and second receptacles, inlet means disposed in one side wall of the casing for permitting entry of a fluid into the casing, and outlet means in the other side wall of the casing for permitting exit of the fluid from the casing and a center plug disposed in the center plug receptacle. In accordance with the invention, the center plug comprises an elongated member, circular in cross-section, having an inflow stage and an outflow stage, and resilient means disposed around the periphery of the elongated member between said inflow and the outflow stages.

Abstract: A valve of a type for use particularly in animal waterers. A valve body having a passageway extending therethrough has a valve stem disposed in the passageway. The valve stem has an enlarged portion on one end thereof having longitudinal slots therein and a valve head on the other end thereof for cooperation with a valve seat located at one end of the passageway of the valve body. A screen having perforate sides and an imperforate end is connected to the valve body and encompasses the valve head. A cylindrically shaped member is positioned inside of the screen and is sealed at one end thereof to the valve body and at the other end to the imperforate end of the screen. A single small hole passes through the cylindrical member at a place on the cylinder whereby the valve head must move past it during opening and closing thereof to thereby keep the opening from being closed due to the build-up of foreign particles or mineral deposits thereon.