Abstract: A filter element includes a first end cap, a second end cap, and a ring of filter media disposed between the first end cap and the second end cap. The ring of filter media circumscribes a central cavity. The filter element also includes an air-bleed conduit axially extending through the central cavity. The air-bleed conduit includes a first portion integrally formed with the first end cap and a second portion integrally formed with the second end cap. The second portion is configured to fluidly connect to the first portion.

Abstract: The present invention relates to a filtering assembly for filtering at least one fluid flowing in particular in a hydraulic motor or device, comprising: —a filter body which comprises a vessel and a cover which are configured to engage with one another in order to enable the filter body to close, —a tube, in particular a central tube, inside the filter body extending along a longitudinal axis (X), —a removable filter cartridge which is housed in the filter body and includes an upper end plate, a lower end plate and a filter medium which extends between the upper end plate and the lower end plate, the filter cartridge having a tubular opening for surrounding the tube, characterized in that the cover has a circular rib which is formed such as to project into an inner space of the filter body, and in that the upper end plate has a circular edge which is designed to sealingly engage radially and inwardly with said circular rib of the cover.

Abstract: A method for forming a thin, board-like base material has a tensile transfer step and a forming step. In the tensile transfer step, the long, thin, board-like base material is transferred by pulling the thin, board-like base material in the transfer direction while holding both ends of the thin, board-like base material along the transfer direction and pulling the ends outward in the direction intersecting the transfer direction. In the forming step, predetermined forming operations are performed with respect to the thin, board-like base material.

Abstract: The liquid recovery filter includes several embodiments, each of which provides for the recovery of liquid otherwise trapped within the filter housing and element. Each embodiment includes a series of vents, purge ports, and passages that communicate fluidly with the filter housing and filter core. Certain vents and purge ports are initially opened following filtration operations to allow pressurized gas to flow into the housing, thereby forcing residual unfiltered liquid through the filter. When this has been accomplished, another vent is opened to the filter core to allow filtered liquid to flow from the downstream or outlet passage from the filter core. Some embodiments have the filter outlet located above the filter, and include a downstream drain port extending from the filter core. The downstream drain port provides for the recovery of filtered liquid when the vent or purge port is opened in these embodiments.

Abstract: A liquid recovery filter assembly for recovering filtered liquid trapped within a core or downstream side of a filter element. Multiple embodiments each include a recovery port and a recovery filter in fluid communication with the core or downstream side of the filter element. The recovery port is opened following filtration operations to permit and to facilitate filtered liquid to flow from a downstream or outlet port, thus allowing recovery of liquid remaining in the filter core or downstream side following filtering operations. The recovery filter permits the introduction of pressurized gas to force the filtered liquids from the filter assembly without compromising the sterility and/or non-contaminant condition of the liquid.

Abstract: A driven crimping gear (10) cooperates with the first idler crimping gear (12) and the second idler crimping gear (14). The gears pull paper of a roll (12) which paper has had the edges curled over. The paper is guided through the gears by plates (28) and (30).

Abstract: A dunnage crumpling apparatus is provided having first and second entry-side crumpling members and first and second exit-side crumpling members. The first and second entry-side crumpling members define an entry therebetween. The first and second exit-side crumpling members define an exit therebetween that is disposed along the longitudinal path downstream of the entry. A crumpling zone being defined between the entry and exit. The first entry-side rumpling member is configured for moving at an first rate and is associated with the second entry-side crumpling member for moving sheet material through the entry in a first direction along a longitudinal path at an entry rate. The first exit-side crumpling member is configured for moving at an second rate and is associated with the second exit-side crumpling member for moving the sheet material through the exit in the first direction along the path at a exit rate that is slower than the entry rate to crumple the sheet material for producing dunnage.

Abstract: A feedring for use with an axial flow preheat steam generator which utilizes a double wrapper to direct feedwater flow to the cold leg tube bundle region. The feedring is positioned directly over the double wrapper and includes a plurality of standpipes spaced circumferentially along the feedring. The standpipes respectively extend vertically from a lower portion of an interior of the feedring upward through the interior of the feedring. The standpipes have a feedwater intake in the upper portion of the feedring to minimize the potential for vapor formation and bubble collapse water hammer. The components of the standpipe are arranged to minimize the transmission of entrained loose parts from traveling with the feedwater to the tube bundle. A feedwater discharge is provided at the exit of the standpipe at or below the bottom of the feedring, for evenly distributing the feedwater into the double wrapper downcomer.

Abstract: A top load liquid filter assembly includes a filter lockout mechanism to ensure that the filter base and cover are not connectable unless there is a proper filter cartridge installed therein. The filter system can also include an automatic drain mechanism and a cartridge retention mechanism. One example embodiment further includes an air bleed vent. A filter cartridge usable in the topload liquid filter assembly includes first and second protrusions and cover-gripper members. Methods of use, installing, servicing, and retaining can be practiced.

Abstract: Disclosed are a hollow fiber membrane module, a filtration apparatus based on the same, and a method for manufacturing the filtration apparatus. The hollow fiber membrane module includes two headers respectively provided with a permeate collecting unit therein, wherein each of the headers has grooves on its two sides, the grooves being extended in a length direction of the hollow fiber membrane. Since one slide rod can simultaneously be inserted into grooves of two adjacent hollow fiber membrane modules, the hollow fiber membrane modules can mutually serve as guides for insertion/ejection thereof. Also, since the grooves formed on the header can serve as insertion holes into which a clamp is inserted, the clamp can be used for coupling between the hollow fiber membrane module and another element and reinforcement of the coupling.

Abstract: Aspects and embodiments of the present invention are directed to apparatus and methods of filtering a fluid to reduce a level of at least one contaminant therein. The filtering of the fluid may be accomplished with a radial flow filtration column comprising a fluid chamber having an inlet, an outlet, and a side wall, an inner permeable retainer positioned in the fluid chamber, an outer permeable retainer positioned in the fluid chamber spaced apart from and surrounding the inner permeable retainer, a media bed compartment formed between the inner permeable retainer and the outer permeable retainer, and an adjustable element biased into the media bed compartment and configured to maintain a predetermined packing density of a media bed to be disposed within the media bed compartment.

Abstract: A blood purification column includes a cylindrical body, a first header having a first blood channel, a second header having a second blood channel, an adsorbent carrier, a first end plate, a second end plate, and a blood flow tube, wherein: one end of the blood flow tube communicates with the first blood channel and the other end is closed; the first end plate has its outer circumferential surface closely contacting the inner circumferential surface of the cylindrical body; a gap is provided between the outer circumferential surface of the second end plate and the inner circumferential surface of the cylindrical body; the ratio of the outer diameter of the blood flow tube in the cross-section vertical to the longitudinal direction, to the inner diameter of the cylindrical body in the cross-section vertical to the longitudinal direction, is 0.35 to 0.50; and the blood capacity is 6 to 10 mL.

Abstract: A top load liquid filter assembly includes a filter lockout mechanism to ensure that the filter base and cover are not connectable unless there is a proper filter cartridge installed therein. The filter system can also include an automatic drain mechanism and a cartridge retention mechanism. One example embodiment further includes an air bleed vent. A filter cartridge usable in the topload liquid filter assembly includes first and second protrusions and cover-gripper members. Methods of use, installing, servicing, and retaining can be practiced.

Abstract: A spin-on filter that eliminates the use of a nut plate and reduces the number of separate components. Instead, the spin-on filter utilizes the end plate of the filter cartridge to perform a number of functions, including closing the open end of the filter shell, sealing between the dirty and clean fluid sides, sealing between the filter and the mounting head to prevent leakage outside the filter to environment, attaching the filter cartridge to the shell, and sealing the end of the filter media.

Abstract: A liquid filter has a filter housing with a first thread and a drain passage. A filter element including a filter medium is arranged in the filter housing. A filter lid is provided with a second thread configured to engage the first thread for connecting the filter lid to the filter housing. The filter lid further has a filter bypass valve for bypassing the filter element when a pressure loss that is too high occurs when liquid passes through the filter medium of the filter element. First bayonet connectors are provided on the filter lid and second bayonet connectors are provided on the filter element for connecting the filter element to the filter lid by engaging the first bayonet connectors. A double-concentric seal is arranged on the filter element for closing off the drain passage.

Abstract: A liquid filter cartridge is provided. Preferred seal arrangements are provided, to provide for preferred axial load conditions, with respect to one or more of the end caps of the cartridge. Some cartridge configurations provided include no core structure or outer liner structure therein, to support axial load. Assemblies using the cartridge, and methods of assembly and use, are provided. The liquid filter cartridge can be a serviceable cartridge, or it can be retained permanently in a housing.

Abstract: A liquid filter has a filter housing with a first thread and a drain passage. A filter element including a filter medium is arranged in the filter housing. A filter lid is provided with a second thread configured to engage the first thread for connecting the filter lid to the filter housing. The filter lid further has a filter by pass valve for bypassing the filter element when a pressure loss that is too high occurs when liquid passes through the filter medium of the filter element. First bayonet connectors are provided on the filter lid and second bayonet connectors are provided on the filter element for connecting the filter element to the filter lid by engaging the first bayonet connectors. A double-concentric seal is arranged on the filter element for closing off the drain passage.

Abstract: A filter element in the form of a nonwoven self-supporting filtration web having rows of folded or corrugated spaced-apart pleats, the web containing continuous thermoplastic fibers a majority of which are aligned at 90°±20° with respect to the row direction. The filter element can be made by forming rows of pleats in such a nonwoven web and cutting the web to a desired size and shape. The filter elements can provide improved mechanical and filtration properties and can exhibit reduced susceptibility to pleat deformation and the loss of space between pleats.

Abstract: A filter assembly for use in filtering stormwater includes a bottom including a boss that includes a rib extending laterally along an inner surface of the boss. The rib includes a locking portion that mates with a corresponding locking portion on a peripheral surface of a connection to an outlet conduit for securing the bottom to the connection thereby inhibiting rotation of the bottom relative to the outlet conduit. A center tube is secured to the bottom using a locking mechanism that inhibits relative movement between the bottom and the center tube. The center tube is in communication with an opening in the bottom and a hood is secured to the center tube. A filter medium is located between the hood and the center tube.

Abstract: A filter unit includes an outer filter assembly, a bypass valve assembly, and an inner filter assembly. The bypass valve assembly can be separated from the outer filter assembly, allowing the bypass valve assembly to be recycled/reused when the outer filter assembly is disposed of. In addition, the bypass valve assembly and the inner filter assembly can be connected together, then inserted into the outer filter assembly.

Abstract: A filter element is removably supported within a housing comprising a filter head and a collection bowl. The element is removed from the lower end of the housing when the collection bowl is removed. The element includes an annular side wall which supports the element on radial ribs within the collection bowl; and a series of projections or posts which engage ribs on the bowl and cause the element to rotate in conjunction with the bowl when the collection bowl is screwed off of the head. The rotation of the element breaks the seal stiction between an upper seal on the element and the filter head, such that the element remains with the bowl. Openings around the sidewall facilitate fluid flow around the lower end cap. The element is supported by the collection bowl as the bowl is removed, and easily removed from the bowl and replaced.

Abstract: A filter element (1) has a filter pot (3) delimiting a cylindrical interior (5) and has a bottom part (7) with a fluid connection (11). A lid part (37) is opposite the bottom part. A filter medium (29) is adjacent to the inner wall of the filter pot (3) in the form of a hollow cylindrical body leaving the central region of the interior (5) free. Fluid passages (31) in the wall of the filter pot (3) surround the filter medium (29). A ring body (53) as a connecting part 10 between filter pot (3) and lid part (37) and has a jacket part (55) extending axially along the end section (57) of the filter pot (3). An end part (51) extends radially inward and spans the edge of the filter pot (3) and the edge of the lid part (37). On the end part (51) of the ring body (53) and on the lid part (37), interacting snap connectors (59, 61) are provided to form a snap connection between end part (51) and lid part (37).

Abstract: A filter bowl and filter cover assembly is provided wherein the filter bowl is adapted to be easily mounted upon and removed from the filter cover by a plurality of bolt fasteners as a result of the bolt fasteners, connecting the filter bowl to the filter cover, being loosened to a predetermined degree and rotating the filter bowl relative to the filter housing in a clockwise direction so as to permit the head portions of the bolt fasteners to pass through key-hole shaped apertures formed within the filter cover. The filter bowl is able to likewise be easily and quickly re-installed upon the filter cover as a result of a reversal of the aforenoted removal procedures.

Abstract: A membrane module (3) comprising a plurality of porous hollow membranes (8). The membranes (8) extend between and are fixed at each end in a header (5, 6). One header (6) has one or more of openings (12) formed therein. The openings (12) are in fluid communication with a source of gas and/or liquid (13, 14, 15). The other of the headers (5) is sealingly connected to and in fluid communication with a head-piece (9). The head-piece (9) is adapted to couple to an associated head-piece of a further module to form a rack of modules (17). A potting head (6) for use in mounting porous hollow membranes (8) is also disclosed comprising a preformed potting element (29). The potting element (29) includes one or more cavities (30) for receiving curate potting material which, in use, supports said membranes (8).

Abstract: The invention discloses a kind of porous membrane filtration component for treating water, specifically it discloses a kind of suspending porous hollow fiber membrane bundle for treating highly turbid waste water. The component includes some porous hollow fiber membrane yarns and casting heads arranged at both ends of respective yarns, wherein the connections between the said casting heads and membrane filtration module are flexible connections, at least one end of the flexible connection the cast header is connected with a hollow tube or cord, and the membrane bundle hangs on the said membrane filtration module, suspending freely. The invention provides a suspending porous hollow membrane bundle that can effectively remove contaminants adhered to the surface of the membrane yarns, makes its membrane yarns difficult to rupture, has a longer service life, and produces water with steady quality.

Abstract: A filter for applications such as a lube filter for a large medium speed diesel engine application lube system is provided in which the open end cap carries three different seals including two radial seals that seal radially against a stem pipe in an axial abutment face and a seal gasket that seals against a mounting face of the housing. One of the radial seals is more reliable than the other while the other of the radial seals acts as a redundant backup and safety in the event that there is an improper installation or damage to the other seal as a result thereof.

Abstract: The present invention refers to a hollow fiber membrane separation device with two flow spaces, of which a first space is formed by the capillary tube passages of a hollow-fiber bundle cast at its ends into a sealing compound, and a second space is formed by a housing enclosing the fiber bundle, wherein the first space is sealed off by caps, placed on the sealing compounds, with seals running over the peripheral areas of the sealing compounds, and wherein the housing, into which the hollow-fiber bundle is drawn, at each end of its casing has tooth-like or pinnacle-like projections formed by axial notches or indentations running out freely. According to the invention, the housing has, between the tooth-like or pinnacle-like projections, extensions extending from said projections and extending to the adjacent tooth-like or pinnacle-like projection.

Abstract: A reusable remote filter having a can-like body, a tubular woven metal mesh filter element fitting concentrically within the can-like body, and a cap having the first and second threaded openings therein, the cap being threadedly assembleable to the can-like body, the first threaded opening being in fluid communication with a first port at a right angle thereto, the first port flaring outwardly to be substantially of the same diameter as the inner diameter of the tubular woven metal mesh filter element when the reusable remote filter is assembled, the second threaded opening being in fluid communication with the periphery of the tubular woven metal mesh filter element around substantially the entire periphery of the tubular woven metal mesh filter element.

Abstract: An oil-collecting can (500) for a filter cartridge (300) comprises a plurality of capillary ribs (530) that are sized and shaped to contact filter media in the outlet chamber. The oil-collecting can (500) can be used in conjunction with a filter cartridge (300), which is installed in a filter assembly to encourage the downward flow of oil droplets. Such a filter assembly could be used, for example, in a crankcase ventilation system, to remove particulates and other contaminants from piston-bypass fumes.

Abstract: A filter assembly for filtering contaminants from any fluid stream. The housing of the filter assembly is preferably made of any metal and/or polymer, and can hold one or two externally centering filter elements or cartridges, each of which can hold a single filter, or multiple filters. Flow in filter housings having two externally centering filter elements or cartridges can be unidirectional or opposed.

Abstract: A filter element is removably positionable within a filter housing that includes a standpipe extending therewithin and provided with a flow control valve. The filter element comprises a tubular filter media, a first end cap, a second end cap longitudinally spaced from the first end cap, and a center tube extending between the first and second end caps. The center tube has a substantially cylindrical body extending between opposite first and second ends of the center tube. The center tube has at least one inlet opening formed on the cylindrical body and a standpipe opening at the second end thereof adjacent to the second end cap through which the standpipe may be inserted longitudinally into the center tube. The center tube further has at least one actuator key provided to open the flow control valve of the standpipe.

Abstract: A filter assembly for filtering contaminants from a fluid stream. The housing of the filter assembly is preferably made of fiber reinforced plastic to prevent corrosion from the fluid stream, and can hold one or two filter elements or cartridges, each of which can hold a single filter, or multiple filters. Flow in filter housings having two elements can be unidirectional or opposed.

Abstract: A candle filter assembly for a filter device includes, in an exemplary embodiment, a tubular core having an outer surface and an inner surface, and including a plurality of openings extending therethrough, a filter media supported by the core defining a core and filter media subassembly, and a drain pipe including a plurality of openings extending therethrough to permit fluid to flow between an outer surface of the drain pipe and the inside of the drain pipe. The drain pipe is located inside the core. The candle filter assembly also includes an end cap, a first sealing block including a drain pipe opening. The drain pipe extends through the drain pipe opening in the first sealing block. The candle filter assembly further includes a compression nut threadingly engaging the drain pipe extending through the first sealing block.

Abstract: A filter element (1) having a filter pot (3) which delimits a cylindrical interior (5) and has a bottom part (7) having a fluid connection (11), a lid part (37) opposite the bottom part, a filter medium (29) adjacent to the inner wall of the filter pot (3) in the form of a hollow cylindrical body leaving the central region of the interior (5) free, and having fluid passages (31) in the wall of the filter pot (3) surrounding the filter medium (29), is characterized in that a ring body (53) which is envisaged as a connecting part between filter pot (3) and lid part (37) and has a jacket part (55) which extends axially along the end section (57) of the filter pot (3) and an end part (51) which extends radially inward and spans the edge of the filter pot (3) and the edge of the lid part (37) is provided, and in that, on the end part (51) of the ring body (53) and on the lid part (37), interacting snap connectors (59, 61) are provided to form a snap connection between end part (51) and lid part (37).

Abstract: A multi-layer filter including a first media layer surrounded by a second media layer, a third media layer surrounding the second media layer, and at least one retainer disposed between the first and second media layers or between the second and third media layers. The first, second and third media layers surround the central axis of the filter. The filter has multiple media layers in a compact package, providing increased media surface area which allows greater contaminant holding capacity, lower pressure drop, and lower face velocity.

Abstract: A fuel filter assembly includes a housing having an end supporting a first tube. The housing defines a cavity that is enclosed by a cover opposite the end. A diverter is arranged within the cavity and includes first and second sides with the first side adjacent to the housing end. The diverter includes a wall on the first side in sealing engagement with either the first tube or the housing end. The diverter is constructed from a first material forming a base and a second material supported by the first material defining at least a portion of the first side. The second material may be overmolded onto the first material. Preferably, the first material is a plastic and the second material is an elastomer forming a gasket suitable for providing a seal between the diverter and the housing. One end of the filter media is embedded in the adhesive on the second side of the diverter.

Abstract: A disposable, spin-on fluid filter is constructed and arranged to mount onto a base that is configured with a threaded mounting shaft. The base provides a fluid inlet flow to the filter and a fluid exit path from the filter. The filter construction includes a housing canister having a closed end and an opposite, open end and a fluid filtering media positioned within the housing canister. A mounting post is formed as part of the closed first end of the housing canister. The mounting post is constructed and arranged for assembly to the threaded mounting shaft of the base. The design focuses on the elimination of any nutplate and on repositioning the location where the fluid filter is connected to the head to the closed end of the canister.

Abstract: A separator of the present invention provides a means for separating a immiscible dispersion of at least one oil from water. The separator adapted for use with a flow generator, includes a housing, a coalescing cartridge within the housing, the cartridge retains a coalescing media and defines at least one cavity or passage, permitting flow of the dispersion into and out of the passage; and a flow regulator comprising a constriction and the regulator displaceable between an open and a closed position and permitting liquid flow out of the passage when in the open position.

Abstract: The chrysanthemum-shaped element is in a cylindrical shape in which folds are formed and inner surfaces of adjacent folds are bonded at their top and bottom edges. The chrysanthemum-shaped element includes (A) an element body composed of a filter medium having a filter paper and a low-melting fiber layer formed on a surface of the filter paper on the inner surface side of the folds at least at the top and bottom edges of the filter paper; and (B) bonding sections formed at the top and bottom edges on inner surfaces of the folds by heat-adhesion of the low-melting fiber layer. The low-melting fiber layer is made of a fiber having a lower melting point than that of filter paper materials that form the filter paper and/or compound fibers which contain a fiber of a lower melting point than that of the filter paper material.

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

Abstract: An oil filter includes a base, a cap mounted to the base to be detachable and forming a filter case in association with the base, a cylindrical filter element accommodated inside the filter case, and an inner cylinder disposed inside the filter element and attached to the cap. The cap has a head portion to which an engaging member is formed so as to extend inside the filter case, an axial one end of the inner cylinder is fitted to an outside of the engaging member to be detachable. The inner cylinder is provided with a stopper projecting in a radially outward direction thereof and having a tip end abutting against an inside surface of the filter case to thereby prevent the inner cylinder from falling down, and the stopper is disposed between the head portion of the cap and the filter element.

Abstract: The oil filter includes a base having an inlet port, an outlet port, and an oil channel communicating with the outlet port. A removable cap is provided to the base, and forms a filter case therewith. A tubular filter element is contained within the filter case. The oil channel coincides with the filter element in axis and extends in an axial direction of the filter case. An inner tube is located in the filter element; and an inner-tube extension fitted thereto movable in the axial direction of the filter case is located on a side of the outlet port. The base includes a holding portion having a joint portion, having the inner tube and the inner-tube extension joined each other, fitted therein. The holding portion includes a clearance portion allowing the inner-tube extension to separate from the inner tube under hydraulic pressure.

Abstract: The present invention relates to a method for the production of liquid cleaners, consisting of a cleaner housing with a cleaning chamber exhibiting an inner and an outer end, and a cleaning insert arranged inside the cleaning chamber. The cleaner housing is given a conical shape such that the cleaning chamber receives a smaller lateral dimension at its inner end than at its outer end, said outer end being openable. The cleaning insert is manufactured from a fluid-permeable, compressible cleaning material with a lateral dimension that in an initial state, outside the cleaner housing, exceeds the smaller lateral dimension of the cleaning chamber. The other end of the cleaner housing is kept open, and the cleaning insert is inserted into said other end having the larger lateral dimension, and is pressed into the cleaning chamber towards the end having the smaller lateral dimension.

Abstract: A filter assembly for filtering fluids which may be readily disassembled includes a perforated center tube assembly which is fluid-tightly connected at one end to an injection molded plastic head and is closed at its other end; an injection molded plastic bowl having one open end and a semi-closed second end; a disposable cylindrical plastic filter element adapted to fit within the plastic bowl and slip over the perforated center tube assembly in close proximity thereto but with no physical retention means between the plastic filter element and the center tube assembly. The assembly includes a releasable seal between the plastic filter element and the center tube assembly. The plastic head further includes an annular base provided with injection molded threaded fittings whereby it can be attached to a fluid supply and unfiltered fluid can flow into the plastic bowl and filtered fluid can flow out of the plastic bowl.

Abstract: A T-handle for a filter includes an integral mechanical indicator. The T-handle indicator has a threaded portion that extends through a hole in the filter cover and retains the cover to a canister. The indicator includes a spring-biased button that provides a visual indication of whether the element needs to be replaced. The button is received in a body that is open to the pressure on the downstream side of the filter element. A pair of clips on the button engage the indicator body to retain the button in the inward (element change) position. The clips can be accessed when the T-handle indicator is removed from the filter to return the button to the outward (fresh element) position. The indicator button includes an axially-elongated slot extending radially through the button, and the body includes a corresponding pair of holes on opposite sides of the slot.

Abstract: A filter assembly with a replaceable filter element and a reusable filter housing, which incorporates a locking mechanism to ensure that the filter system will not be operated without a filter element installed.

Abstract: A filter assembly for filtering fluids which may be readily disassembled includes a perforated center tube assembly which is fluid-tightly connected at one end to an injection molded plastic head and is closed at its other end; an injection molded plastic bowl having one open end and a semi-closed second end; a disposable cylindrical plastic filter element adapted to fit within the plastic bowl and slip over the perforated center tube assembly in close proximity thereto but with no physical retention means between the plastic filter element and the center tube assembly. The assembly includes a releasable seal between the plastic filter element and the center tube assembly. The plastic head further includes an annular base provided with injection molded threaded fittings whereby it can be attached to a fluid supply and unfiltered fluid can flow into the plastic bowl and filtered fluid can flow out of the plastic bowl.

Abstract: A filter assembly includes a bowl assembly and a head member enclosing a filter cartridge. A filter center tube is permanently fixed to the bowl but allowed to rotate within a pocket in the bottom of the bowl. The top of the center tube is threaded for fastening to a stud on the filter mounting head. The center tube cannot be threaded onto the stud without the filter assembled over the center tube and into the bowl. In order to assemble the bowl to the head, the operator must turn the outside of the bowl. If a filter is not present, the bowl will turn independently of the center tube and no torque is transmitted to the threads. When the filter is properly installed, a series of tabs or features spaced around the inner perimeter of the wall of the bowl interlock with corresponding grooves or features in the outside diameter of the end cap of the filter. Tabs or features on the outer diameter of the center tube also interlock with grooves or features in the inside diameter of the end cap.

Abstract: A filter device includes a tubular casing [10] with a closed bottom, a filter element [20] received within the casing [10], a lid [30] which closes an open end of the casing [10], and has a communication hole communicating the inside and outside of the casing [10] with each other, and a fastening member [50] fastening the casing [10] and the lid [30] together. A gap is formed between a peripheral wall [14] of the open end portion of the casing [10] and a peripheral surface [32] of that portion of the lid opposed to the peripheral wall [14].

Abstract: A T-handle for a filter includes an integral mechanical indicator. The T-handle indicator has a threaded portion that extends through a hole in the filter cover and retains the cover to a canister. The indicator includes a spring-biased button that provides a visual indication of whether the element needs to be replaced. The button is received in a body that is open to the pressure on the downstream side of the filter element. A pair of clips on the button engage the indicator body to retain the button in the inward (element change) position. The clips can be accessed when the T-handle indicator is removed from the filter to return the button to the outward (fresh element) position. The indicator button includes an axially-elongated slot extending radially through the button, and the body includes a corresponding pair of holes on opposite sides of the slot.