Abstract: A debris recovery device for drainage systems that includes a shaft with a peripheral wall. A basket made out of a meshed material has a spring loaded hingedly mounted bottom wall that is partially opened when it carries a load of a predetermined weight. A peripheral flange rests on the shoulder of the peripheral wall. An oil trap assembly can be optionally added to catch oil spills before reading the drainage system. The oil trap includes a sheet of a porous oil-absorbing material.

Abstract: A filter (10) for filtering debris out of the fluid in a transmission sump (S) prior to the fluid entering a transmission pump (P) is disclosed. The filter (10) includes a filter housing (12) presenting a filter inlet (30), a bypass inlet (32), and an outlet (46). Filter media (14) is disposed in the housing (12) such that fluid flowing from the filter inlet (30) to the outlet (46) passes through the media (14) and fluid flows from the bypass inlet (32) to the outlet (46) without passing through the media (14). A bypass valve assembly (16), shiftable into and out of a closed position, prevents fluid flow through the bypass inlet (32) when the valve (16) is closed.

Abstract: A fluid filter assembly includes a valve assembly having a plunger with openings defined therein. The plunger includes a sealing portion and a non-sealing portion. The sealing portion sealingly engages a valve seat, while the non-sealing portion includes an opening which leads to a central passage through the plunger, the opening and central passage cooperating to direct the flow of fluid through the plunger and an associated spring.

Abstract: A fluid filter assembly having a relief valve for visually indicating the life of a filter element. The fluid filter assembly of the present invention provides a vertical, transparent housing having a fluid inlet for communicating a fluid into the housing and a fluid outlet for communicating fluid downstream of said housing. A filter element is disposed within the housing between the fluid inlet and the fluid outlet for filtering the fluid. In the preferred embodiment, a frusto-conical divider is connected to the top of the filter element and extends downward adjacent a bottom portion of the filter element wherein the fluid from the inlet rises between the filter element and the inside of the divider and between the outside of the divider and an inside surface of the housing. A relief valve is provided in the top of the filter element and is in communication with the unfiltered and filtered side of the filter element.

Abstract: A modular system for putting together different sized filter elements, especially filter elements having different lengths, more particularly filter devices for hydraulic fluids, comprising a support tube that defines an inner cavity in the corresponding filter element, said tube being surrounded by a filter mat that is substantially cylindrical and that matches the different dimensions and having passages to let the fluid pass through. The filter elements also contain at least one coupling member enabling connection on the end side of a corresponding support tube to an additional support tube having a location on the end side for interacting with and locking on the coupling member. Each coupling member is embodied as an attachment plug element with a crown consisting of interspaced tabs extending in axial direction and hooks for snapping on the location of the attached support tube.

Abstract: A combination valve support and sealing element is used in a filter cartridge in which the filter cartridge includes a filter element within a housing closed by an end plate having a central opening surrounded by an array of radial openings spaced a fixed radial distance from one another. The valve support and sealing element is comprised of a unitary body having an annular sealing lip for sealing with the end cap of the filter element, which sealing lip deflects under oil pressure to allow oil to bypass the filter element if the filter media of the filter element is clogged. An anti-drainback valve is provided by a radial flange projecting from the unitary body, which radial flange overlies the spaced radial openings and prevents fluid from flowing back out of the spaced radial openings when not under pressure. When the fluid is under pressure, the radially projecting flange deflects, allowing oil to flow past the flange, into the housing and through the filter element.

Abstract: A sieve filter (1) for fluid lines or conduits which are formed of an annular disk-like fluid inlet (3) and an annular disk-like fluid outlet (4) with a fine mesh filter element arranged there between that is braced by stiffening bars (5), and which has a bypass function when the filter element (6) is stopped up or with highly viscous fluid. The fluid inlet (3) of the sieve filter (1) is constructed with the bypass function in that it has a smaller outside diameter than the fluid outlet (4) and is sealed off by a pressure relief valve (7). When the filter element (6) is stopped up or with highly viscous fluid in the line, the fluid inlet (3) is cleared by opening the pressure relief valve (7) as a bypass, through which the fluid is conducted unfiltered to the fluid outlet (4) of the sieve filter (1).

Abstract: A liquid circuit for filtering a liquid, comprising a liquid storage vessel (10), a liquid pump (17), a consumer or user device (14), a filter element (23) and a controller (24). A heated liquid can be supplied at least partly to the filter element (23). The liquid circuit may be used in liquid systems in which a liquid, such as water, oil or fuel, is filtered and at least part of the liquid is returned to the storage vessel (10). The liquid is pumped in the liquid circuit from the storage vessel (10) by the pump (17) through lines (11, 13, 15, 16), filtered by filter element (23) and supplied to the consumer device (14). Excess liquid not required by the consumer device (14) is returned through liquid return line (15) to the controller (24) which directs the liquid either to the filter element (23) or the storage vessel (10), depending on the liquid temperature.

Abstract: A filter device for filtering hydraulic fluid includes first and second subelements 40, 42 within a filter housing having separate inflows 20, 24 thereto for the respective subelements and a common outflow 22. The first subelement has a higher filter fineness than the second subelement. Several bypass configurations are taught and include: (i) a bypass line 28 for bypassing the second subelement by drawing fluid directly from the supply 95; (ii) a bypass valve 116 (FIG. 3) for bypassing the first subelement; and (iii) a bypass valve 151 (FIG. 5) for connecting the first subelement inflow 20 with the common outflow 22. The device is compact, has an easy-to-service arrangement, and ensures protection of a hydraulic pump and highly stressed hydraulic components.

Abstract: The invention relates to a cooling device comprising a cooling unit (10) through which a fluid to be cooled, especially hydraulic oil, can flow and comprising a filter unit (12) for filtering the fluid. By virtue of the fact that the cooling unit (10) and the filter unit (12) are joined together as one piece and that the filter unit (12) is placed together with the cooling unit (10) inside a device housing (14), the inventive cooling device can be constructed in a manner that is considerably more compact and lighter while having an output that is comparable to that of prior art solutions.

Abstract: Oil filter for engines, transmissions or automatic transmissions, said oil filter being integrated in an oil pan, at least one bypass valve being arranged on the oil filter, the bypass valve containing a spring whose spring resistance increases with increasing temperature, said spring opening and closing an opening of the bypass valve with the aid of a closing means.

Abstract: A filter assembly includes housing enclosing a replaceable filter element. A support core is provided in the housing, and includes an extension and locking assembly. The element includes a ring of filtration media with a pair of end caps. The first end cap includes a central opening to receive the support core. The extension and locking assembly prevents the cover of the housing from being attached to the housing body without a proper filter element installed. The extension and locking assembly includes a bypass member and a locking member, which are in locking engagement when an element is absent in the housing. The second end cap includes internal protrusions which engage the locking member when the filter element is installed to disengage the bypass member from the support core, and allow the element to be inserted and the cover to be installed.

Abstract: A twist-on renewable filter comprising a one-piece hollow housing, made of polymeric material having a threaded adapter for attachment to a distribution head assembly. The filter housing is fabricated from components that are made of a polymeric material that are fused together to form the one-piece hollow housing. A filter media assembly is rigidly bonded at both ends within the housing. The renewable filter has an infinite life and can be removed and cleaned, for example, by reverse flushing the filter with a cleaning solution. A bypass valve 250 is provided within the filter that is designed to provide full closure for an infinite life. The bypass valve 250 is fully located within the one-piece hollow housing such that it cannot be disabled or tampered with. The bypass valve 250 functions to allow sufficient fluid to bypass the filter media when the filter media has become contaminated and will not permit the full volume of the normal oil stream to be filtered.

Abstract: An oil filter includes a housing 14 having an end plate 20 attached to the open end thereof. The end plate 20 includes an outlet opening and inlet openings 22. An anti-drainback valve 49 is provided adjacent the end plate. A filter element having an end cap at each end is positioned within the housing. The end cap 50 remote from the end plate includes a plurality of openings 52 spaced from a closed central portion 51. A spring valve 60 cooperates with the end cap 50 and the interior wall of the housing to alternately allow and disallow oil flow through the end cap openings depending upon the differential pressure across the end cap 50. The spring valve 60 and the end cap 50 can be operationally interengage to provide a relatively flat profile. Depressions 72 (FIG. 5) may be included between the arms 62 of the spring valve to provide a flow path should the spring valve be flattened against the housing during operation of the filter.

Abstract: A fuel system (10) comprises a tank (12), a pump (14), heat exchangers (16 & 18) and a filter (20) in series fluid flow relationship. A fuel metering unit (24) returns a proportion of the filtered fuel to the tank (12) and is controlled by the engine electronic control (30). The system (10) operates so that fluid is not returned to the tank (12) when a pressure differential of the order of 5 psi is detected across the fluid filter (20) and the temperature of the fluid is below 0° C. The fluid is not returned to the tank (12) for a period of time to reduce the flow of fluid passing through the heat exchangers (16 & 18). The reduced flow of fluid passing through the heat exchangers (16 & 18) is heated to a temperature sufficient to melt any solidified impurities blocking the fluid filter (20).

Abstract: A filter (10) for filtering debris out of the fluid in a transmission sump (S) prior to the fluid entering a transmission pump (P) is disclosed. The filter (10) includes a filter housing (12) presenting a filter inlet (30), a bypass inlet (32), and an outlet (46). Filter media (14) is disposed in the housing (12) such that fluid flowing from the filter inlet (30) to the outlet (46) passes through the media (14) and fluid flows from the bypass inlet (32) to the outlet (46) without passing through the media (14). A bypass valve assembly (16), shiftable into and out of a closed position, prevents fluid flow through the bypass inlet (32) when the valve (16) is closed.

Abstract: A fluid filter assembly having a relief valve for visually indicating the life of a filter element. The fluid filter assembly of the present invention provides a vertical, transparent housing having a fluid inlet for communicating a fluid into the housing and a fluid outlet for communicating fluid downstream of said housing. A filter element is disposed within the housing between the fluid inlet and the fluid outlet for filtering the fluid. In the preferred embodiment, a frusto-conical divider is connected to the top of the filter element and extends downward adjacent a bottom portion of the filter element wherein the fluid from the inlet rises between the filter element and the inside of the divider and between the outside of the divider and an inside surface of the housing. A relief valve is provided in the top of the filter element and is in communication with the unfiltered and filtered side of the filter element.

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 relates to a filter device with a filter housing (10), in which at least two filter elements (12, 14), with differing filter grades of filter material (16), are arranged, which are each partially separated from each other by a separating device (18), with a through channel (24) of predetermined cross-section for a hydraulic connection between neighbouring filter chambers (20, 22), which are arranged prior to the filter materials (16) in the flow direction of the fluids for filtering. According to the invention, the filter device permits a combination of a so-called main- and a so-called side-stream filter in the smallest possible space, whereby very good purity levels for the filtered fluid are nevertheless achieved.

Abstract: A relief valve is provided with a valve seat, a valve body capable of closing an open portion of the valve seat , a coiled spring for energizing the valve body in a closing direction, and a spring receiving body disposed such that the spring is interposed between the spring receiving body and the valve seat. This spring receiving body has a pair of recess portions that can be fitted in end portions of a beam portion of the valve body. According to this relief valve, in an assembled state, if the valve body and the spring receiving body are brought into proximity and then rotated relative to each other, the valve body, the spring receiving body, the spring, and the valve seat, are rapidly disassembled.

Abstract: A lubricating oil filter has a housing which includes a first shell providing a housing base and a second shell providing a housing lid, wherein a filter media is suspended in a space defined by the shells by being clamped between a shoulder in the housing base and a rib projecting from the housing lid. The filter media may be either a flat filter media or a pleated pack filter media. In a preferred configuration, the housing is rectangular and has both an unfiltered oil inlet and a filtered oil outlet in the first shell forming the housing base so that the filter element may be changed without disconnecting the lubricating oil filter from inlet and outlet lines.

Abstract: A multiple stage automatic, low-to-no back pressure, high capacity, continuously renewable, separation and filtration system for the contaminated liquids which are discharged into the environment including means to add air to the contaminated liquids as they moved into a vertical elongated hydrostatic chamber wherein the action of gravitational forces and added air separates the contaminants from uncontaminated liquids, with a detachable bottom container for collecting and holding heavier contaminants and a large capacity upper chamber for collecting and holding lighter contaminants with a drain valve for the subsequent environmentally safe disposal of these lighter contaminants liquids, where the out flow of this vertical elongated chamber passes through a generally smaller filter canister composed of a hydrophobic, contaminant attracting filtering material which captures the remaining trace solid and liquid contaminants suspended in the out flow of the hydrostatic chamber.

Abstract: A thermal sensitive material 61 is disposed between a spring valve 60 and an end cap 50 of an oil filter (FIG. 1). Upon reaching a predetermined pressure, e.g. when the media of the oil filter becomes clogged, an opening 52 in the end cap opens to allow the oil to bypass the filter media. However, the thermal sensitive material precludes bypass flow through the end cap (e.g. during initial operation of the engine when a pressure surge may occur) until a predetermined oil temperature is attained.

Abstract: A fluid filter assembly having a relief valve for visually indicating [the life of] when a filter element may be replaced. The fluid filter assembly of the present invention provides a vertical, transparent housing having a fluid inlet for communicating a fluid into the housing and a fluid outlet for communicating fluid downstream of said housing. A filter element is disposed within the housing between the fluid inlet and the fluid outlet for filtering the fluid. In [the preferred] a first embodiment, a [frusto-conical] divider is connected to the top of the filter element and extends downward adjacent a bottom portion of the filter element wherein the fluid from the inlet rises between the filter element and the inside of the divider and between the outside of the divider and an inside surface of the housing. A relief valve is provided in the top of the filter element and is in communication with the unfiltered and filtered side of the filter element.

Abstract: A domestic water filtration system includes a first water treatment unit (7) with a replaceable ion exchange resin water softener cartridge (15) accommodated in a canister (19) and a second water treatment unit (8) with a replaceable filter cartridge (16) including an activated carbon block (16a) wrapped with a depth filter (22a) and a membrane filter (22b). A flow control device comprising a three way valve (2) has an inlet (12) for connection to the mains water supply and two outlets (13, 14) respectively connected to the inlets of the water treatment units (7, 8) so that rotation of the valve spindle (10) in one direction from an off position allows water to flow to the inlet (3) of the first treatment unit (7) and in the other direction from the off position allows water to flow to the inlet (5) of the second treatment unit (8).

Abstract: A filter, especially a filter for lubricating oil of an internal combustion engine, including an inlet for the raw liquid and an outlet for the clean liquid. A filter insert (12) is arranged inside the filter, as well as a valve, such as a pressure relief valve (23). Parts of the valve are provided with coatings, for example hydrophobic coatings of polytetrafluoroethylene or silicone. The filter can also contain a heating element (34) in the vicinity of the valve.

Abstract: A dual direction bypass valve allows a transmission filter to function whether or not it is placed in the vehicle transmission correctly. The filter includes a front and rear valve bodies separated by an end cap, and each having a spring and disk. When the filter media is clogged during normal forward flow, the fluid pressure on the rear valve body disk compresses the spring, opening an aperture in the end cap, allowing the fluid to pass from the front valve body through the rear valve body to the outlet, bypassing the filter media. If the transmission filter is placed in the engine backwards, the fluid pressure compresses the spring of the front valve body and opens up apertures in the end cap, such that the fluid flows through the apertures and the front valve body, bypassing the rear valve body and the filter media, to exit the filter.

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 device is described for mechanically cleaning fluids, especially for [cleaning] the cooling water that enters a heat exchanger, having a pipe segment (12) as housing, a sieve element (20) that essentially covers the cross section of the pipe, and a suction device (20) on influx side (22) that is capable of moving around an axle (18), the purpose of the device being to aspirate the surface area of sieve element (16) and in this manner clean it, wherein, according to the invention, sieve element (16) forms a partially cylindrical casing having a cylindrical axle (56) perpendicular to axle (24) of pipe segment (12), wherein the open part of cylindrical casing (16) is arranged toward influx side (22) (FIGS. 1, 2).

Abstract: An in-line biological liquid filtration system and method comprises a collection container for receiving biological liquid. A filter is located downstream of the collection container and in fluid flow communication therewith. A storage container for receiving filtered biological liquid is located downstream of the filter and the storage container is in fluid flow communication with the filter and with the collection container. An additive solution is located in the storage container. At least one automatic control member automatically restricts a flow of biological liquid or additive solution when flowing the liquid or solution between the collection container and the storage container.

Abstract: A filter arrangement for use with a vessel that receives fluid includes a body engageable with the vessel. The body has an inlet port, an outlet port, a body cavity, a first fluid path disposed between the inlet port and body cavity, and a second fluid path disposed between the body cavity and the outlet port. A filter is disposed at least partially in the body cavity, and includes a filter cavity and filter media for filtering the fluid. A valve is associated with the body for allowing the fluid to flow into and out of the vessel. When the fluid flows into the vessel, the fluid flows through the filter cavity and along the first fluid path without flowing through the filter media. When the fluid flows out of the vessel, the fluid flows along the first fluid path, through the filter media and along the second fluid path.

Abstract: A filter (10) for filtering debris out of the fluid in a transmission sump (S) prior to the fluid entering a transmission pump (P) is disclosed. The filter (10) includes a filter housing (12) presenting a filter inlet (30), a bypass inlet (32), and an outlet (46). Filter media (14) is disposed in the housing (12) such that fluid flowing from the filter inlet (30) to the outlet (46) passes through the media (14) and fluid flows from the bypass inlet (32) to the outlet (46) without passing through the media (14). A bypass valve assembly (16), shiftable into and out of a closed position, prevents fluid flow through the bypass inlet (32) when the valve (16) is closed.

Abstract: A liquid filter, suitable for the lubricating oil of an internal combustion engine, having a cartridge installation opening 15 which faces substantially downward, a positively guided oil drain 28 is proposed for draining oil from the filter when the filter cartridge is changed. The positive guidance is effected by a valve stem 29 which is connected directly or indirectly to the housing by a support tube 22. It opens a gasketed drain opening which can be connected to a hose 35 in order to assure drainage of oil, for example, to a separate oil collecting vessel. The drain opening is automatically opened by unscrewing the screw-on cover 11. No other drain plug or the like needs to be opened. This filter is especially suited for installation in confined spaces since the oil can be drained in a reliable manner.

Abstract: A combination filter/dehydrator is disclosed which first filters a stream of oil or fluid of low volatility to remove particulate contaminants, and then passes the stream through a dehydrator 38 to remove free, emulsified, or dissolved entrained water. A pressure control valve 46 is provided to enable a portion of the oil stream to bypass the dehydrator in order to maintain a predetermined pressure differential across the dehydrator membrane. A discharge chamber (FIG. 5) is provided at an outlet of the dehydrator to prevent the loss of oil that has permeated the dehydrator membrane. A sweep gas stream 70 for removing water from the permeate side of the dehydrator membrane can include a coalescer 72 (FIG. 4) for removing liquids entrained in the sweep gas before entering device.

Abstract: An antibacterial member is constituted such that a propolis component is contained in, or adhered to, a water-insoluble base member. This antibacterial member is mixed into a filter member to be disposed in a flow passage in an antibacterial filter. Water in the antibacterial filter receives the antibacterial action from the propolis component when coming in contact with the antibacterial member. Thus, microorganisms in water is extinguished, and generation and propagation of germs, bacteria, algae and the like are suppressed.

Abstract: An oil filter comprises a housing that is open at one end and has an end plate connected to the housing for closing the open end. The end plate has at least one inlet opening and an outlet opening therein. An anti-drain back valve is provided for precluding return flow of oil through the inlet opening. An annular filter media is disposed in said housing. An end cap is provided at each end of the filter media. The end cap remote from the end plate has at least one opening spaced radially outwardly from the central axis thereof. A spring cooperates with said end cap remote from the end plate. Normally, the opening in the spring is closed to oil flow. When the filter media becomes clogged, the pressure within the housing increases and when the pressure differential across the end cap remote from the end plate exceeds a predetermined value, the opening in the spring is opened for oil flow.

Abstract: A shipboard system 200 to process contaminated water and exchange commands and data with a remote facility. The shipboard system includes a separation system 10, controller 202, and a communication unit 204. The separation system includes a separator 16, oil accumulator 18, coalescer 20, and a pump 24. The controller 202 is coupled to the separation system 10 and is operable to acquire data relating to processing of contaminated water and can utilize commands received by the communication system 204 to permit remote control of the separation system. The communication unit transmits the data via satellite or other wireless transmission to a command center 212. The shipboard system can also include a global position system which can be used by the controller to inhibit the discharge of contaminated liquids when the ship is in protected waters.

Abstract: A sieve filter (1) for fluid lines or conduits which are formed of an annular disk-like fluid inlet (3) and an annular disk-like fluid outlet (4) with a fine mesh filter element arranged there between that is braced by stiffening bars (5), and which has a bypass function when the filter element (6) is stopped up or with highly viscous fluid. The fluid inlet (3) of the sieve filter (1) is constructed with the bypass function in that it has a smaller outside diameter than the fluid outlet (4) and is sealed off by a pressure relief valve (7). When the filter element (6) is stopped up or with highly viscous fluid in the line, the fluid inlet (3) is cleared by opening the pressure relief valve (7) as a bypass, through which the fluid is conducted unfiltered to the fluid outlet (4) of the sieve filter (1).

Abstract: A sieve filter for fluid lines, especially for hydraulic pressure lines (2) in internal combustion engines which is formed of a hollow cylindrical main body (3) with a fluid inlet (4) and a fluid outlet (5), and of a fine mesh filter element (6) for through flow by fluid which has a bypass function as well when the filter element (6) is stopped up or with highly viscous fluid. The sieve filter (1) is biased by a spring element (7), and is insertable together with the spring element (7), between two axially spaced opposing surfaces (8, 9) inside the pressure line (2) such that its fluid inlet (4) and the spring element (7) are prestressed against the opposing surfaces (8, 9), whereby the main body (3) of the sieve filter (1) closes a bypass fluid channel passing the filter element (6) which is clearable through an axial displacement of the main body (3) against the force of the spring element (7) resulting from the rise of fluid pressure on the filter element.

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 filter device for fuel supply system of an internal combustion engine of a vehicle has a housing, a filter insert arranged in the housing, at a dirt side a supply from a fuel container, at a clean side an outlet to an internal combustion engine, a return to the fuel supply container from the dirt side, a valve controlling the return, the valve having a movable wall which is loaded with a fuel pressure at the clean side and holding the return closed until a fuel pressure at the clean side exceeds a predetermined value, and thereafter is released by the valve, the valve having a rod which is displaceable by the movable wall and extends through the filter insert from the clean side to the dirt side, the movable rod having an end region which is arranged at the dirt side and controlling the return.

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 includes a pair of housing portions defining an interior cavity. A filter element is provided in surrounding relation to a fuel pump. A diverter plate assembly supported in the housing in sealing relation with one of the housing portions, the pump and the filter element, includes a bypass valve with a ball member. The bypass valve is normally closed when the pump is operational, and fuel flow passes from the inlet, through the filter element, and through the pump to the outlet. When the pump is not operational, the bypass valve opens, and fuel flow passes from the inlet through the filter element, and then directly to the outlet, bypassing the fuel pump. The diverter plate assembly includes a segmented collar that couples the assembly to one of the housing portions; a lip seal sealing to the pump; an outer rim that seals to one of the housing portions; and an annular flange that seals to the filter element.

Abstract: In order for a filter element with a casing, having filter material, with an end wall which terminates the casing on an upper side and has a through-passage opening, and with a bypass valve for opening and closing the through-passage opening, the bypass valve having a valve housing which is made of plastics material and accommodates a valve body and a valve spring which loads the valve body in the direction of a valve seat, to be configured such that it can be assembled more easily and produced more cost-effectively, it is proposed that the valve housing comprises a valve guide, and that a separate supporting element is provided, it being possible, for assembly purposes, for the valve body and the valve spring to be introduced into the valve guide and then for the supporting element to be fixed on the valve guide.

Abstract: A sump pan for a device such as a transmission or engine lubricating system includes an upper chamber and a lower chamber which are separated by a partition. The partition has an opening therethrough in which a filter media is positioned for filtering dirty fluid in the upper chamber so that clean fluid collects in the lower chamber. A suction tube extends through the partition for pulling the clean fluid for recirculation through the device utilizing the fluid such as a transmission or an engine. A bypass valve is also disposed in the partition so that if the fluid becomes too viscous to pass through the filter media, or the filter media becomes clogged, the bypass valve will open so that the fluid can still circulate.

Abstract: An oil filter assembly comprises: a cylindrical main housing having an open upper end; a cover assembled with an upper end thereof; an impeller housing disposed beneath a lower surface thereof; a mixer disc fixedly inserted in the impeller housing; an impeller disposed on an upper surface of the mixer disc to mix foreign material contained in an oil; an adjust housing disposed under the impeller to supply the oil when an engine is operated; a filter member for filtering off the foreign material from the oil supplied from the impeller; an overflow valve for controlling a quantity of introduced oil and capturing metallic foreign material from the oil supplied from the impeller by means of a magnetic force; and a fixing-and-oil-discharging bolt for assembling elements disposed in the main housing by means of the cover and supplying the oil filtered and cleaned to parts of an engine.

Abstract: A fuel filter for an engine includes a housing having an interior space and is assembled into a fuel flow path between a source of fuel and the engine. The housing includes a passageway which has an inlet aperture which is used to control the delivery of fuel to either the engine or back to the source of fuel. The housing also includes a return-fuel passageway which is in flow communication with the interior space and is adapted to couple to the source of fuel. A filter cartridge is installed within the housing and includes an end cap with an air vent tube having an inlet opening. The air vent tube is designed so as to assemble into the passageway, so as to plug the inlet aperture. Once the inlet aperture is plugged by the air vent tube, the flow entrance to the passageway is raised from the inlet aperture to the inlet opening of the air vent tube. The plugging of the inlet aperture by the air vent tube allows fuel to be delivered to the engine.

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: An apparatus for separating solid particles from the suction effluent of, for example, a dental office, preferably driven by a dental office vacuum pump, includes a surge tank for accommodating effluent overfill connected to a sedimentary deposit tank for sedimentation of effluent particles. A bypass conduit is connected to the surge tank inlet which is equipped with a vacuum break valve for allowing air into the system when the suction openings are closed. The sedimentary deposit tank has a series of baffle chambers through which effluent flows in sequence, and in each of which chambers sediment is deposited for later removal. The surge tank preferably has a liquid level sensor and warning device. Modular filters or adsorbants may be installed in the sedimentary deposit tank, or a modular auxiliary filter may be connected downstream of the tank. Chemical injection may be used to improve sedimentation.

Abstract: A self-cleaning faucet filter for filtering particulate matter from a water stream, the filter having a housing with a main discharge orifice and a side spout with a flushing water discharge, the housing having a main discharge passage with a filter member and a by-pass discharge passage in the side spout that has a leaf valve that allows water to flow through the by-pass discharge at the beginning and end of water usage with particulate matter accumulated on the filter flowing with the water discharged through the by-pass discharge.