Abstract: A filter arrangement for liquids including a filter element (6) that can be axially inserted into a filter housing (4) during assembly of the filter arrangement (1). After installation, this filter element (6) seals a back flow device at least for the liquid to be filtered with at least one seal (12) in front of a return flow channel (16). The device is configured in such a way that as the filter element (6) is axially withdrawn, a first seal (12 ; 20; 30; 40) can be initially released to enable return flow of unfiltered liquid, and as the filter element (6) continues to be axially withdrawn, a second seal (18; 22; 41) can be released to enable return flow of filtered liquid.

Abstract: A spin-on oil filter cartridge has a can with a gripping portion at the free end comprising seven concave, arcuate flutes which are spaced from one another. The seven arcuate flutes provide an ergonomically configuration which facilitates removal of the filter cartridge by hand. If the filter cartridge is too tightly engaged to be removed for replacement purposes, a tool in the form of a socket wrench is provided wherein the tool includes a socket portion which compliments the gripping portion of the filter cartridge. The tool further includes a knob fixed thereto which provides increased hand purchase which facilitates rotation of the spin-on oil filter cartridge.

Abstract: Several filter elements (13, 14) for purifying a liquid are connected with a connecting piece (21) to form a single structural unit which is then arranged in a filter housing (12). One of the advantages of the invention is that the filter elements (13, 14) can be connected before they are introduced into the filter housing (12). This makes the final assembly of the complete filter (11) considerably easier by reducing the number of parts. The connecting piece (21) can also be used to separate a flow of liquid into two partial flows which can be filtered through different filter elements so that they differ in their degree of purity.

Abstract: A spring 15 is crimpingly fixed to an element holding plate 14 of the fluid filter. Since the spring 15 is crimpingly fixed to the element holding plate 14, a material having a high elastic limit can be freely selected for the spring 15. At the assembling time, the spring 15 can be prevented from yielding to be elastically deformed, even when the size between the upper end of the element 12 and the crest of the filter case 11 fluctuates. As a result, it is possible to provide a fluid filter which requires no high sizing accuracy of the individual parts composing the fluid filter at the assembling time so that it can be easily assembled.

Abstract: A fuel filter assembly includes a filter element positioned within a hollow cylindrical filter housing and attached to the filter housing such that the filter element and filter housing rotate in unison. The filter housing includes an integral gripping surface, such as longitudinal ribs.

Abstract: A molded base module for a filter assembly comprises a header portion which forms a receiving cavity for a replaceable cartridge and includes integral inlet and outlet structures for providing the communication with the received filtered cartridge. The base module also includes an integrally formed retainer defining a retaining channel for securably retaining the cartridge to the module. The retainer may include angularly spaced slots which mate with corresponding retention tabs of the cartridge.

Abstract: A purifier for filtering and purifying a fluid, such as water, comprises a pressure vessel for holding a purifying element for filtering and purifying the fluid, the pressure vessel having inlet and outlet members for introducing the fluid into the pressure vessel and for removing the fluid from the pressure vessel. A first end cap closes a first opening in the housing of the pressure vessel, and a sealing member located between the first end cap and the housing of the pressure vessel seals between the first end cap and the housing. A first removable retaining yoke extends between the housing and the first end cap for securing the first end cap to the housing. Level compensating support members are provided for supporting the pressure vessel above a surface on which the purifier rests in a secure, non-wobbling manner. Optionally, a by-pass channel and a by-pass valve are provided to cause the fluid to by-pass the purifying element, when filtered/purified fluid is not desired.

Abstract: A mobile oil recycling system adapted for use with an oil-lubricated combustion engine. The inventive system includes an evaporation chamber for changing the pressure of the oil from a first pressure to a second pressure lower than the first pressure. Metering holes in a textured three-dimensional evaporation surface at the second pressure allow oil to spread over the three-dimensional surface area and evaporate contaminants from the oil. In a specific embodiment, the system further includes a filtering system for removing solid contaminants from the oil. A housing contains and supports the filtering system and the contaminant removal chamber, and directs the flow of oil through the recycling system. In a more specific embodiment the housing includes a base having an oil inlet for allowing pressurized oil to enter the oil recycling system and an oil outlet for allowing oil at atmospheric pressure to exit the recycling system.

Abstract: A filter cartridge for use with a base to create a filter assembly. The filter cartridge includes a seal to establish a fluid flow within the filter assembly and a resilient bias member to bias the filter cartridge away from the base. The resilient bias member in cooperation with a fastening mechanism secures the filter cartridge to the base.

Abstract: A replaceable filter cartridge assembly for a liquid filter and a liquid filter in which such a filter cartridge is installed. The filter cartridge 10 is provided with a support element 15, and a seat 20 for a sealing membrane 19 is provided on the support element 15. The sealing membrane seals the inlet 22 of the housing via a sealing edge 21 that acts as a return flow barrier over the inlet. The sealing membrane 19 also has a radial sealing surface 23 to provide a seal between the support element 15 and the outlet port 24 of the filter. This permits the filter cartridge to be manufactured in a particularly cost-effective manner and assures simple mounting within the housing. Since only the filter cartridge, which can be pushed onto the support element 15, needs to be exchanged, very little material has to be disposed of when the filter is replaced, which further increases the cost-effectiveness of the filter in use.

Abstract: A filter for filtering a fluid, such as lubricating oil for an engine, has a full flow filter element and a bypass filter element stacked on the full flow filter element. A flow-deflecting element is disposed between the full flow filter element and bypass filter element to provide a spinning motion to oil flowing from the bypass element as that oil joins oil which is passed through the full flow filter element. The spinning motion of the oil from the bypass filter element encourages mixing of the oil from the bypass filter element with the oil filtered by the full filter element. During operation of the engine this arrangement tends to provide cleaner lubricating oil and therefore reduces engine wear while increasing the time interval between scheduled maintenance.

Abstract: A filter cartridge comprising an annularly closed filter medium provided with end disks (16). Within the interior of the cartridge there is a support tube (24), which is made in one piece and has a radial sealing ring (25) in its interior. The outside diameter of the support tube is chosen such that the support tube can be inserted into the filter cartridge. This produces a sealing effect between the end disks (16) and the outer circumference of the support tube. The filter cartridge of the invention has the advantage of being cost-effective to produce and simple to assemble.

Abstract: A filter with a multi-piece filter body has a filter head connected to a filter pot and has at least one filter element. The filter element has a support tube surrounded by a filter mat. The filter mat free ends have element mountings. One of the element mounting is rigidly connected to the support tube and can be placed in contact with the filter head. An intermediate member is arranged, at least at that end of the filter element mounting connected to the filter head, between that element mounting and that end of the filter mat, and can be removed along with the filter mat from the support tube which remains connected to the filter head.

Abstract: A filter assembly including a filter element having an extension of filter material potted in an end cap, the potting adhesive material potting the filtering material into the end cap and further adhering the end cap to a hub of a baffle plate. The end cap is an open end cap having an outer perimeter and an inner perimeter defined by a portion of the hub.

Abstract: A filter arrangement is described in which fuel flows through a filter member in a radially outward direction. A sleeve surrounds the filter element and defines, with the filter member, an air collection chamber. One or more small openings are provided in the sleeve whereby air is permitted to escape from the air collection chamber at a controlled rate.

Abstract: A packaged fluid filter comprises a sealed canister fitted with fluid inflow means and fluid outflow means which communicate internally of the canister respectively with proximal ends of an axial flow filter element hollow core spool, and outflow face of wound tissue laid on said core spool, thereby serving to eliminate need for a fixed spool holder internally of the canister.

Abstract: A liquid filter, especially for oil of an internal combustion engine, with a bypass valve including a valve body 20 and a valve seat 21 integrated in an end plate 32 of the filter insert. A spring 22, which urges the bypass valve closed, is mounted in a support member 24 attached to the housing. Thus, parts of the bypass valve subject to wear and soiling can be replaced each time filter element 18 is replaced, and reliable operation of the bypass valve is assured throughout the life of the filter. The filter insert can be designed free of metal for easy disposability. The filter cartridge can also be used with known filter arrangements in which a permanent valve body is housed in the support member 24. When the filter element of the invention is used, this permanent valve body stays in the support member and functions as an intermediate piece 35, which transmits force between spring 22 and valve body 20. The valve function is assumed by new valve body 20 engaging valve seat 21.

Abstract: The invention concerns a filter for liquid circulating in an engine unit or in hydraulic equipment including a tank (1) cooperating with a closure element (2) with a filtering cartridge (3) inserted in the tank (1) and adjusted therein by threadedly engaging the closure element (2) with the tank (1). The cartridge (3) includes a filtering material (4) having at one of its ends a first flange (5) and at the other of its ends a second flange (6) that includes a peripheral seal (8) designed to be sealingly clamped between an end of the tank and the closure element (2) when the tank (1) is threadedly with the closure element (2). The invention is characterized in that it includes at least one element forming a stop (9, 91) provided on the second flange (6) and/or on the closure element (2) and/or on the tank (1), the element forming a stop (9,91) being designed to control clamping of the peripheral seal (8) with the closure element (2).

Abstract: A liquid filter, especially including an oil filter cartridge 12 which is contained in a pot-shaped or cylindrical housing 10 with threaded cover 11, into which a cooler 13 is preferably installed. An outlet opening 37a is contained in the oil cooler which facilitates complete emptying of the cooler when the filter is changed. In this way a complete replacement of the oil can be performed, so that the replaced oil is not contaminated from the outset by residues of the old oil. Thus, service intervals can be lengthened. To prevent a short circuit of the outlet opening 37a during operation, the opening is closed by a valve stem 33 coupled to the threaded cover and opened by unscrewing the cover.

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 filter medium is formed by preparing a pH 3-5 aqueous suspension of cellulose fibers in a pulper or beater with a concentration of between 3% and 5%. A pH 2.8-3.8 aqueous suspension of glass fibers is prepared in a pulper or beater with a fiber concentration of between 0.5% and 1.2%. A first pulp consisting exclusively of cellulose fibers is prepared, to which a moisture-resistant resin is added. A second pulp is prepared consisting of cellulose fibers and glass fibers in proportions of between 30% and 70%, to which a moisture-resistant resin is added. Two superposed layers of the pulps are formed by methods used in paper manufacture. The two layers are collected on a layer of material able to absorb water. The two superposed layers of pulp are pressed to a pressure of between 0.1 and 1 kg/cm2. The resultant sheet is dried to a moisture content of 1%. The dried material is impregnated with a 50 wt % solution of acrylic latex, and dried again. The dried material is then wound on a reel.

Abstract: A water filter is packaged in a way that permits longer dwell time and greater volume in a dwell passage of the water filter. In one embodiment the water filter includes an influent passage where a biocide is imparted to the water, a dwell passage where the water remains in contact with the biocide for at least a predetermined duration, and an effluent passage where the biocide is removed from the water. The water filter includes a replaceable cartridge mounted in a pressure vessel. By arranging the dwell passage to include a pan shaped portion in the bottom of the vessel and an axial portion along the extremity of the cartridge, greater volume, greater mixing, and more effective disinfecting result. Another embodiment includes a series of baffles on the exterior surface of the cartridge that create further turbulence for mixing the biocide with the water.

Abstract: The oil filter 23 is set in the downstream of the oil control valve 4 while being extended in the axial direction of the advance-angle side oil path.

Abstract: A coolant filter kit, for attaching in-line to a coolant hose of a combustion engine, includes a fluid conduit member and a coolant filter apparatus. The fluid conduit member has a stem and two opposed branches connected to the stem, with an inlet formed in a first branch thereof, and an outlet formed in a second branch. The fluid conduit member further has a partition in the stem thereof, substantially separating a first flow chamber from a second flow chamber therewithin. In a preferred embodiment of the invention, a limited amount of fluid is allowed to flow directly from the inlet to the outlet without passing through the filter apparatus. The filter apparatus includes a hollow housing defining a filter chamber therein. A porous cylindrical filter element is disposed in the filter chamber of the housing. Optionally, the filter apparatus may include a slow-dissolving tablet or plug for releasing a supplemental coolant additive into coolant over time.

Abstract: Described is an oil filtration apparatus that includes external vanes 120 and associated outer flow passages 140 for allowing a heat exchange to occur between oil passing therein and cool air that passes by the vanes. A manually rotatable valve 154 is provided at one end of the filtration apparatus for controlling the flow of oil through the manifold. In a first position, the valve allows oil to flow through the outer flow passages through the end cap 152 and into an inner flow passage 142 where it is filtered before flowing through a central passage 134 and out the flow manifold. In a second position, the outer flow passages are blocked so that oil flows directly into the inner flow passage. A pressure sensitive valve 164 is provided in the end cap so that when the filter becomes clogged, oil is diverted directly to the central flow passage bypassing the filter.

Abstract: A filter comprising a housing, which consists of at least two housing parts, and a filter element attached inside the housing. The invention provides for at least one latch element by means of which a detachable latched connection can be established between the filter element and at least one of the housing parts.

Abstract: A recharge and filter assembly includes a housing with a removable recharge and filter cartridge. The housing includes a canister with a removable cover allowing access to the cartridge. The cartridge includes a filter element comprising a ring of media and upper and lower end caps. The upper end cap carries a peripheral seal which provides a fluid-tight seal with the housing canister. An annular channel is provided between an annular portion of the upper end cap and the seal. An annular support member from the cover is received in the annular channel to support the upper end cap. Latching fingers on the upper end cap and a mating ring on the cover removably couple the cartridge to the cover. The cartridge further includes a recharge canister supported by tabs on the upper and lower end caps. Fluid is recharged by inhibitor material, while particulates and other contaminants are removed by the filter media.

Abstract: The invention relates to a spin-on filter for filtering a flowing substance, especially to a filter for hydraulic liquid or lubricating oil in combustion motors. The filter comprises a casing, which is openable at one end, a substantially cylindrical replaceable filter means fitted inside the casing, the flow to be filtered having been arranged to pass through the filter means mantle, and a collar for connecting the filter with a device assembly, which includes inlet and outlet ducts for flow to be filtered. In accordance with the invention, the filter comprises a support member forming a solid extension of the collar, consisting of an axial spindle inside the filter means and of an end flange at its end opposite to the collar, the periphery of the end flange being tightly sealed against the inner wall of the casing such that the support member will receive the internal pressure within the casing axially.

Abstract: A filter assembly for a liquid to be filtered, especially for use in a conditioning unit for the lubricating oil of a motor vehicle, including a filter cartridge (8) concentrically arranged around a center tube (9) through which a liquid stream may flow. The filter assembly includes a bypass valve (11) through which unfiltered liquid can flow into the center tube (9) if the filter cartridge becomes clogged. The bypass valve (11) is durably affixed by a valve plate (21) so that a valve body (16) is urged against the valve plate (21) by a valve spring (19) supported by supports (20) extending axially in the center tube (9).

Abstract: A liquid filter assembly comprises a filter cartridge and a filter head in fluid communication with the filter housing. 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. The filter head includes an inlet for conveying liquid to the unfiltered liquid volume, a first outlet for conveying liquid from the filtered liquid volume, and a second outlet. A first valve assembly is provided which is constructed and arranged to selectively permit passage of liquid from the unfiltered liquid volume through the second outlet, in response to a first selected liquid pressure level within the unfiltered liquid volume.

Abstract: A water filtration system for preventing scale and removing chlorine includes a vertically oriented elongated pressure vessel 11 having a fitting at the upper end thereof. The fitting includes a passage 30 for directing water into the pressure vessel and a passage 40 for allowing water to flow outwardly from the pressure vessel. A catalytic/magnetic device 50 is coupled to the input fitting passage and includes a catalytic chamber 51 and a magnetic chamber 54 through which the input water flows. A flow diffuser 57 receives the output of the magnetic chamber and directs it through a chlorine filtering media 60 in an upwardly traveling water flow. The chlorine filtered water is allowed to pass outwardly from the pressure vessel. The catalytic chamber 51 includes flexible fibers 61 of high nickel stainless steel while the magnetic chamber includes a center tube 95 having a plurality of oppositely oriented magnets supported on the exterior thereof.

Abstract: A filter (10) for a vehicle is provided. The filter includes a casing (12) having an inlet (22), a plurality of outlets (25) and a passage extending within the casing. The inlet and outlet are adapted to be in fluid communication with a fluid system of a vehicle. The filter further includes a first filter (26) disposed within the passage and a core (20) received with the passage. The core is adapted to be in fluid communication with the fluid system, wherein at least a portion of the core is magnetized such that fluid passing through the fluid system passes through the core and ferrous particles within the fluid are magnetically captured by the core.

Abstract: A fuel filter cartridge has a plurality of retention tabs which radially integrally project along the roll seam structure which joins a top section of the housing to the cylindrical lower section. A base contains complementary slots which allow for the cartridge to be axially inserted and rotated to secure the replaceable cartridge in position. Various numbers and configurations of the retention tabs may be provided.

Abstract: The invention relates to a spin-on filter (1) for filtering a flowing substance, especially a hydraulic liquid or lubricating oil in combustion motors. The filter (1) comprises a casing (7), open at one end, which is connected to a device assembly (6) including inlet and outlet ducts (4, 5) for the flow to be filtered, and a substantially cylindrical replaceable filter element (12) fitted inside the casing. The flow to be filtered passes through the filter element mantle, either radially-inwardly or radially outwardly. The cylindrical filter element (12) includes an end flange (16), designed such that its outer edge (17) simultaneously acts as a seal for the casing (7) end. The flange (16) can be made by injection-molding plastic in one piece and is equipped with flow openings (18) required for the flow to be filtered and communicating with the inlet or outlet ducts in the device assembly.

Abstract: A fuel filter (10) has a filter case (11), and a return path (25) is provided on the upper surface of the filter case (11). Return fuel discharged from a pressure regulator is supplied to the return path (25). The return path (25) having a closed lower end is provided with branch paths (26). The return fuel supplied to the return path (25) passes through the branch paths (26) and flows down into fuel reservoir along the outside peripheral surface of the filter case (11). Electrical charge on the surface of the filter case (11) is reduced when the return fuel flows along the outside peripheral surface of the filter case (11). Kinetic energy of the return fuel is reduced by the energy absorbing effect of the return path (25), the energy distributing effect of the branch paths (26), and the energy absorbing effect when the return fuel flows down along the outside peripheral surface of the filter case. Thus, fuel return sound waves from the returning fuel dropping into the fuel reservoir are reduced.

Abstract: A filter cartridge includes a filter housing having a main housing portion and a removable end closure defining a filter element cavity. The main housing portion includes an open annular end having an in-turned annular lip with a series of receiving slots formed in the inner surface of the lip. A filter element is disposed within the housing cavity and includes an end cap with a series of axially-extending drive pins, and an axially-extending stand-off device, where the drive pins are axially longer than the stand-off device. A mounting hub having a central threaded collar for attachment to a base is disposed between the outer surface of the end cap and the lip of the main housing portion. The mounting hub includes a series of orientation through-holes which correspond to the location of the drive pins on the end cap.

Abstract: A filter includes a casing enclosing a filter cartridge and a removable collection bowl. The filter cartridge includes a filter media ring with upper and lower end caps. The lower end cap of the filter cartridge has a ring-shaped member projecting axially downward. The ring-shaped member has an annular portion with radially inward-directed threads, whereby the collection bowl, with radially outward-directed threads, can be removably attached to the cartridge. The ring-shaped member further includes radial flow passages between the threads and the end cap, whereby contaminants may pass from a peripheral region of the filter element interiorly of the ring-shaped member and downwardly into the attached collection bowl. The filter includes an anti-rotation feature, comprising radially outward-directed keys, disposed circumferentially around the annular portion of the ring-shaped member and projecting radially-outward therefrom, and slots formed on the inside surface of the casing.

Abstract: A relief valve for an oil filter device integrally formed with a check valve has an annular shape, and has a front end portion, a guiding portion, a sealing portion, a recess portion, and a groove portion. The relief valve is attached to a protector only by inserting a cylindrical protector end portion into the groove portion thereof. At this time, the recess portion is elastically deformed so that the sealing portion moves inwardly, while the sealing portion is elastically compressed by the protector end portion. As a result, the relief valve closes an oil flow passage defined in a wall of the protector end portion only by an elastic deformation stress thereof. The relief valve can be readily molded and attached to the oil filter device and stably provide desired valve opening characteristics.

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, in particular, a fluid filter of the "spin-on" type, comprising a head with an inlet space and an outlet space and with a coaxially extending connecting spigot, a housing with one open end, said housing containing an annular-cylindrical filter element and having a terminal edge that confines said open end and sealingly engages a groove provided in the body of said head and positioned coaxially around said connecting spigot, as well as an annular disc-shaped intermediate piece screwed onto said connecting spigot and supporting said filter element. An edge portion of said intermediate piece extending beyond said filter element is screwed into said housing and is provided with passage openings. Head, intermediate piece and filter housing are sealingly assembled with one single ring.

Abstract: A novel spiral membrane arrangement is disclosed comprising opposing elongate filtration membrane units, spiraled about a base axis and separated by a novel lattice separator having spaced apart elongate primary laths which form fluid passageways, bridged by cross laths arranged to form a plurality of fluid shears spaced along the passageways which divide, deflect and/or disrupt gross fluid flow through the passageway, directing fluid against the membrane surface and creating a self cleaning functionality which improves the efficiency and the life of the life of the membrane arrangement.

Abstract: A fluid filtering apparatus for a vehicle, which comprises: a filter element (2) provided with an element body (20) having a tubular shape and with a sealing member (21, 21) having a plate-shape, which is joined to each of opposite ends of the element body (20); a filter case (1) for receiving the filter element (2); and a pair of holding members (3, 4) coming into close contact with the sealing member (21) of the filter element (2) in an axial direction of the filter element (2) so as to divide an inside of the filter case (1) into a dirty-side zone (C1) and a clean-side zone (C2), between which the filter element (2) is placed. The sealing member (21) is joined to the element body (20) by ultrasonic fusion, which is applied exclusively to an outer peripheral portion (210) of the sealing member (21).

Abstract: A faucet with multiple water discharges includes a housing, an input water connection for said housing, an unfiltered water discharge and a filtered water discharge. There is a water filter within the housing and a valve within the housing which is connected to each water discharge. There is an unfiltered water flow path from the input water connection to the valve and a filtered water flow path from the input water connection, through the filter, to the valve. A manual control element, accessible from the exterior of the housing, operates the valve to direct filtered water to the filtered water discharge and unfiltered water to the unfiltered water discharge. There is an electrical circuit positioned within the housing. The circuit includes a display and the circuit is responsive to operation of the manual control to cause the circuit to operate the display only during the discharge of filtered water.

Abstract: A fluid filter assembly (20) includes an axially extending tubular housing shell (24) having an integral closed end (26), a distally opposite integral open end (28), and a sidewall (30) extending integrally between the ends. An annular filter cartridge (32) is in the housing shell. An adapter plate (48) has a first set of threads (50) thread mounting the adapter plate to the machine (22) from which fluid is filtered, and a second set of threads (54) engaging the threads (56) of the open end of the housing shell in thread tightened engagement. The housing shell is a singular one-piece member of sufficient stock and thickness at the open end to be internally threaded and to structurally support direct threaded engagement with the adapter plate without an intermediate structural support member.

Abstract: A method of applying a curable powder coating, to a selected portion of a spin-on filter housing, uses a fluidized bed coating apparatus to provide a slip-resistant enhanced gripping surface when cured. This slip-resistant coating is applied to a selected portion of the exterior surface of the filter housing, in order to provide an easily grippable slip-resistant textured surface, once the powder has been cured. The textured coating according to the invention may be applied to a bare untreated plastic or metal surface, or alternatively, may be applied overlapping a cured layer of a conventional coating. A preferred coating is a thermosetting paint powder. In a first embodiment of the invention, a slip-resistant textured surface coating may be applied to the entire exterior surface of a spin-on filter housing, except the base plate thereof.

Abstract: An improved, reduced waste oil filter has a concave housing having a first end, a fluid inlet port and a fluid outlet port. A concave cover is removably and sealably attached to a second end of the housing providing a closed area with which the inlet and outlet ports communicate. An elongated cylindrical disposable oil filter element is supported within the closed area. The filter element has a perforated center tube, a first end of which detachably communicates with the fluid outlet port, the other end of the center tube being closed. The center tube has a filter media there around so that fluid flow into the closed area through the inlet port flows through the filter media and into the center tube to pass out through the outlet port. The filter element has a length greater than the internal depth of the cover so that when the cover is removed from the housing a portion of the length of the filter element extends exteriorly of the cover to facilitate easy removal and replacement.

Abstract: A filter assembly including a base and a disposable filter cartridge. The container of the filter cartridge has a top portion of an upper section that is received in the base and which may deform into engagement with the interior receiving surface of the base when exposed to the fuel system operating pressure. A plurality of longitudinally extending keys or protrusions protrude from the bottom surface of the base. The protrusions are selectively dimensioned and positioned to provide a unique protrusion matrix for a given filter capacity, filtering quality or filtering parameter. The protrusions form corresponding depressions in the top portion of the upper section when the fuel system is operating, locking the top portion of the upper section to the base. The base structure supports the upper section of the cartridge, controlling the extent of deformation of the upper section.

Abstract: An oil exchange apparatus (16, 96, 126) and its assembly with an arrangement (17) of fluid flow lines (112), (108), for lubricating a system, such as an engine (15, 145), while providing for a quick exchange of the apparatus (16, 96, 126) with another one when another batch of oil is to lubricate the system. A filter (30, 103, 135) is mounted and disposed in a receptacle (21, 97, 128); inlet conduits (144, 109, 132) and outlet conduits (34, 105, 136) are mounted to the receptacle (21, 97, 128) and by which oil flows in and out of it in the operation of the system. A vacuum or vent conduit 43 also is mounted to the receptacle in each of its embodiments. In one embodiment, all the conduits (34, 44, 43) are mounted in a top housing component (22) of the receptacle (21). In other embodiments, inlet (109, 132) and outlet (105, 136) conduits are mounted at the receptacle's bottom (101, 130), while the vacuum/vent or third conduit (115, 141, 156) is at its top (102, 142).

Abstract: A fuel filter assembly that provides a constant level of least restricted fuel flow through the fuel filter assembly during the useful life of the filter media by utilizing the least possible amount of filter media to provide the least possible pressure differential over the filter media while also providing a constant level of fuel additive by exposing an amount proportional to the filter media required for the least possible restricted fuel flow. The fuel filter assembly utilizes a vertically upward housing that houses a filter media and a fuel additive. The fuel level slowly rises in the housing as the filter media becomes obstructed with contaminants and as the fuel additive dissolves over the life of the filter media. The top portion of the housing is made of a transparent material so that the level of fuel may be easily determined, thereby allowing for an accurate and simple assessment of the useful life of the filter media and the fuel additive.