Abstract: An oil filter includes a housing having a case and a cap detachably engaged with each other and a filter element detachably contained in the housing. An oil-draining hole is provided at a bottom portion of the case. The oil filter further includes a plug member for opening and closing the draining oil hole and a spring member for operating the plug member according to an engagement state of the case and the cap. At an intermediate condition of the engagement state of the case and the cap, the plug member moves to the cap side to open the oil-draining hole. Therefore, before changing the filter element, oil staying in the oil filter can be readily securely discharged to the outside.

Abstract: A diaphragm type of flush valve for use with toilet devices such as urinals and water closets includes a body with an inlet and an outlet and there is a valve seat therebetween and a valve member movable to a closing position on the valve seat. The valve member includes a diaphragm which is peripherally attached to the body. There is a pressure chamber above the diaphragm for holding the valve member on its valve seat and there is a filter and a bypass orifice connecting the inlet and the pressure chamber. The filter includes a filter ring positioned beneath the diaphragm and adjacent the outer periphery thereof. The filter ring and the diaphragm are held in a fixed position relative to each other. The filter ring has a plurality of outwardly directed circumferentially spaced filter grooves. There is a seal ring between the filter ring and the body and facing the grooves.

Abstract: A septic tank filter system comprises a mounting member adapted for attachment to an interior surface of a septic system tank, at least one open-ended, cylindrical filter housing fixed to the mounting member, and a hollow foraminated filter nested in each filter housing. The filter has a first conduit providing a fluid flow connection between the filter interior and an outlet port in the filter housing. Liquid sewage is filtered during passage from the outside of the filter to its interior. Filtrate flows through the first conduit, then through the filter housing outlet port, thence through the mounting member and finally exits the tank through the outlet pipe in the tank wall. A score line in the filter housing side wall permits ready removal of a section thereof to form an inlet port. Telescoping channel members on the outside of the filter housings allow them to be interconnected with the outlet port of one in fluid flow connection with the inlet port of another.

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

Abstract: The fuel filter/regulator assembly comprises a cylindrical body open at one end and closed at its opposite end by an annular wall having a pocket for receiving the regulator. The annular fuel filter is received in the body and has an inner end cap configured to bear against and receive an upper portion of the regulator. A further end cap closes the open end of the body and bears against the fuel filter element. A fuel inlet is provided and all components of the housing are formed of stainless steel. In another form, a wave spring is employed to accommodate stack-up tolerances of the fuel filter.

Abstract: A lubricating oil filter for internal combustion engines is disclosed herein. The oil filter includes a vertical housing closed at the top by a screw cover and includes a filter support rotatably mounted on the screw cover for removably supporting an annular filter element. The filter support includes a valve element at a bottom end thereof for closing an additional outlet port at the bottom of the housing when the cover and filter support are installed on the housing and for opening the additional outlet port when the cover and filter support are removed from the housing.

Abstract: This invention is directed to a method for inhibiting particulate material in a pneumatic tire from adversely affecting operation of a tire valve assembly The method involves inserting a filter element into a valve stem passage of the valve assembly while the valve assembly is connected to the wheel assembly, and then installing a sealing valve in the valve stem passage. The invention also relates to a tool for inserting the filter element into the valve assembly to inhibit particulate material from passing into the valve assembly while allowing fluid to pass therethrough. The tool comprises a body selectively attachable to the valve assembly. The body has a plurality of passages therein, including a plunger passage, a filter passage and a fluid passage, and a selector valve having two bores therein for selective registry with the plurality of passages.

Abstract: A water treatment or filtration unit is in two parts, a base and a cartridge. The base includes three ports, one of which may be selectively plugged or otherwise disabled. The cartridge contains the water treating material and is screwed into a socket in the base. Openings in the cartridge are then aligned with openings in the base to allow water to pass therethrough. Cartridges may be readily exchanged by simply unscrewing from, and screwing into, the base.

Abstract: A rotary drum filter valve is provided with a valve having a valve segment with a first part which partially restricts the flow of filtrate from a head section and a second part which blocks from the head section.

Abstract: Method for filtering treated water and apparatus to practice the method. The method taught herein consists of filling a first container with water, attaching a special filter apparatus thereto and finally attaching a second, empty bottle to the filter apparatus. When the conjoined containers and filter apparatus are inverted, the water in the first container, now atop the filter apparatus passes through that apparatus and into the second container under the impetus of gravity. Air displaced from the second container by the transfer of water therein is exchanged into the first container by means of a vent located in the body of the filter apparatus. The apparatus taught herein comprises a filter body having disposed within the previously discussed vent, at least one filter element and a check valve to preclude the unwanted re-filtration of previously filtered water.

Abstract: A fuel injection valve has a fuel filter developed as one piece with a holding collar. The holding collar extends radially beyond the fuel inlet connection and has a nose outside the fuel inlet connection. The circumferential nose of the holding collar together with the groove on the outer circumference of the fuel inlet connection forms a detent connection by which the fuel filter is fastened in pin-pointed position. Between the base body of the fuel filter and the inner wall of the fuel inlet connection there is merely a clearance fit, so that formation of chips is avoided within the fuel injection valve. The fuel injection valve is particularly suitable for use in fuel injection systems of mixture-compressing external-ignition internal combustion engines.

Abstract: An oil filter has a cap screwed to the approximately upright arranged filter housing of the oil filter for the cleaning of lubricating oil, with a ring-shaped filter insert being detachably fastened on the cap and separating the outer inflow space from the inner flow-off space. In the lower zone of the filter housing, provision is made for a valve-like acting member, which is automatically opened with each change of the filter insert and serves for discharging oil that remained in the filter housing into an oil-collecting space via a discharge duct. A center bar is rotatably connected with the cap. The center bar is axially displaceable in a limited way and has in its zone close to the cap a piston-like flange, which is sealed against the filter insert and separates the inflow space from the flow-off space. The center bar has, in its lower end zone, the valve-like acting member cooperating with the discharge duct.

Abstract: A spin-on filter is shown for use in high pressure fluid applications. The filter generally includes a housing having an open end and a closed end. Disposed within the housing is a filter element having an open end and a closed end. A cover is placed in the open end of the housing, the cover having a entrance flow passage operable in delivering fluid to the filter and a exit flow passage operable in delivering fluid from the filter. The cover includes a hub sealingly engaged with the open end of the filter element. A valve assembly extends from the hub into the housing, and defines a valve seat with said hub. The valve seat has a relief channel therethrough, connecting the entrance flow passage to the exit flow passage. A baffle plate is adjacent to the valve seat and biased against the valve seat. In operation, the first and exit flow passages have associated pressures.

Abstract: A fluid filter, particularly adapted for use in non-vertical header mount arrangements, has an inlet thereinto and an outlet therefrom, both of which are valved to create a closed filter shell upon removal of the filter from the header. The outlet valve is opened by engagement of the filter on a header spud therefor and the inlet valve is opened by pressurized oil being presented thereto.

Abstract: An electromagnetically operated injection valve including a fuel filter that has a filter housing on which a return spring is supported and which includes a frame that is pressed into a flow hole so that the force introduced by the return spring onto the fuel filter is guided via the filter housing and the frame pressed into the core. This obviates the need for a setting bushing for setting the spring force. The injection valve is particularly suitable for fuel injection units of mixture compressing spark ignited internal combustion engines.

Abstract: An emergency shut-off device for an air-compressing internal combustion engine is provided in the filter head of the engine fuel filter for the purpose of shutting off the fuel supply for shutting down the engine when the engine cannot be turned off by the ignition key.

Abstract: A seal for a rotating center valve vacuum filter drum has a non-flat cross section with an elastomeric core and a chemical resistant sheathing. The seal is installed under tension so that, as wear occurs during operation, positive sealing contact is maintained. The non-flat cross section provides a nesting relationship with the center valve slot and stationary shoe to resist any tendency to wander out of the slot.

Abstract: A filter device includes a tube connectible to a fluid line for the fluid to be filtered, and a housing enclosing the tube and including a partition dividing its internal chamber into two compartments each including a filter body. The housing and partition are movable axially of the tube to position the partition with respect to the inlet opening at: (a) a first position to cause both filter bodies to perform a filtering function, (b) a second position to cause the first filter body to perform a filtering function, or (c) a third position to cause the second filter body to perform a filtering function.

Abstract: A water filter comprising a hollow cylindrical base, a filter assembly fastened in said base at the top which is comprised of an inner filter tube covered with a braided outer filter tube, a cylindrical casing covered on said filter assembly and attached to said base at the top, a ater outlet pipe connected to said base at the bottom, a water intake pipe and a drain pipe respective connected to said base, a plunger fastened in a cylindrical hole inside said base and rotated by a lever, wherein said plunger has a plurality of water passage holes alternatively rotated by said lever to let an intake flow of water from said water intake pipe: (a) flow toward said water outlet pipe directly; (b) flow through said filter assembly to said water outlet pipe (c) flow through the space between said inner filter tube and said outer filter tube and then, penetrate through said outer filter tube toward said drain pipe; (d) flow into the space between said outer filter tube and said cylindrical casing and penetrate through

Abstract: A pressure-activated diaphragm valve which when installed in the main up-stream side of a pressurized line, responds to signals from a control unit to shut off the main supply line and at the same time, opens a drain port on the down-stream side of the valve. When used as a freeze protection system, the main water line is shut off and the drain port opened before the freeze point, thereby, eliminating water damage from frozen, broken pipes. The valve also is self-cleaning and has a magnetic plug to remove and keep metallic particles out of the control chamber and the control unit has automatic and manual modes.

Abstract: A liquid control assembly consisting of: a housing having a top and bottom, a chamber, a drain conduit having an entryway in the chamber and communicating between the chamber and a discharge point, and a delivery conduit having an entryway in the chamber and communicating between the chamber and a point of use; and structure for selectively blocking the drain conduit entryway and for thereby diverting liquid in the chamber to the delivery conduit.

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

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

Abstract: A liquid filter as disclosed which includes a housing in which a filtering media is disposed. A relief valve permits the liquid filtrate to bypass the media when the pressure differential across the media exceeds a predetermined level. The relief valve includes a valve member consisting of a valve disc from which four legs extend. The valve closure spring engages the legs to maintain the valve closed until the pressure differential attains a predetermined level. The legs are designed so that only two of the legs engage the spring during normal operation of the valve. Accordingly, the other two legs remain unstressed by the valve spring, but can engage the edge of the valve aperture in case of failure of one or both of the other legs to prevent the valve member from falling into the liquid filtrate, thus blocking the flow of liquid filtrate to the engine, causing catastrophic failure of the engine.

Abstract: A fluid flow fill valve (10) has an elongated strainer member (40) with a plurality of axially extending flanges (44) each having alternating notches (48) and comb-like elements (46) which abut a complementarily tapered supply conduit wall (25) to provide an elongated strainer member along the conduit. The upstream end of the strainer member (40) has a nub (64) which is placed within an aperture (74) of flexible fluid flow restrictor member (66) to provide for a restrictive annular inlet to the strainer member (40). Strainer member (40) can be easily flushed by depressing and axially moving the strainer member downwardly such that a clearance (84) is formed between the comb-like element (46) and the tapered wall (25) of conduit (24).

Abstract: A fluid power apparatus (10) includes a power piston (40) dividing a working chamber (18) from a first chamber (16), the power piston (40) biased toward a rest position by a spring (17) and the piston (40) displaced by means of restricting fluid flow between the working chamber (18) and first chamber (16). In order to keep contaminants from entering the first chamber (16), a collapsible filter (80) is disposed about a piston rod (13) of the power pistion (40), the filter (80) having at an end cap (88) with a central opening (91) through which extends the piston rod (13) and at an opposite end member (98) a flange (95) which serves as a seat (97) for the spring (17). The end member (98) seats sealingly against the power piston (40) while the end cap (88) has a sealing mechanism (92) about the periphery of the central opening (91) to provide sealing between the end cap (88) and input rod (13).

Abstract: A valve structure for a swimming pool water filter includes:(a) a hollow body having multiple flow apertures,(b) a rotary plate on the body and having flow porting, the plate being movable toward and away from said flow apertures,(c) seal means between the body and plate,(d) a handle having operative connection to the plate to rotate said plate to bring said plate porting into and out of selected registration with said flow apertures,(e) and means mounting the handle to pivot without rotating the plate, and between a first position in which the handle has moved the plate to energize the seal means to seal off between the body and plate, and a second position in which the handle has moved the plate to de-energized said seal means.

Abstract: A filtered stop including a seal assembly having a rotary seal member with flow ports and a stationary seal member with corresponding flow ports, the rotary seal member being selectively positionable by indexing means which are operable from outside the stop so that the flow ports of the rotary seal member may be positioned either into or out of alignment with the ports of the stationary seal member to automatically shut off the flow of fluid before removal of the filter can be accomplished.

Abstract: The subject valve discharge system comprises a discharge valve member that includes a valve closure segment at an inlet end thereof for insertion in the discharge valve housing. It further includes valve connecting means at a discharge end thereof. The respective discharge valve member and the discharge valve housing together define a gap therebetween. The discharge elbow defines a flow passage therethrough and includes elbow inlet and outlet ends. The elbow inlet end includes elbow connecting means. Discharge valve mounting means are connected to the respective discharge valve member and the elbow connecting means, respectively. The valve mounting means is self-adjustable during use for axial movement in response to the axial movement of the discharge system which is responsive to the axial movement of the rotary drum filter. In this way, the gap setting is maintained at a substantially constant, fixed clearance.

Abstract: A combined valve and filter mechanism for use in chemical apparatus comprises a valve body having a valve seat connected thereto. A valve stem has a valve at one end thereof for engaging said valve seat and has a cylindrical filter element for telescoping within the valve seat. The mechanism permits filtration of the chemical in situ without a separate filtering mechanism while providing a valve which when open or closed permits the agitation of the chemical in the apparatus without interference with or from the valve and vice versa. In the fully open position, the entire contents of the apparatus can be withdrawn from the apparatus.

Abstract: A rotary drum filter of the pipe machine type has a stationary vacuum breaker valve-discharge elbow assembly at the discharge end of the drum which defines a streamlined, smoothly curving, and substantially unobstructed discharge flow passage with gradually changing flow cross sectional areas. The valve member includes a valve closure segment at its inlet end that is structurally connected to the annular outlet end flange and sealing rim by an extension segment which forms a continuation of the valve segment. The cross sectional shapes and areas of the flow passage at the valve outlet and discharge elbow inlet are the same, but the area gradually increases in a direction toward the outlet of the elbow, and the shape gradually changes from a segmented circle to a full circle in the same direction.

Abstract: A vacuum breaker valve-discharge elbow assembly for a rotary drum filter of the pipe machine type is adjustably mounted to the drive gear housing for the filter via a separate mounting plate. A valve flange is secured to the mounting plate. The mounting plate is in turn transversely and axially adjusted on the gear housing via adjusting bolts to accurately seat the valve within its valve housing in the drum. The discharge elbow is then secured to the mounting plate independently of the valve. The valve can be rotationally adjusted on the mounting plate without disturbing the prior axial and transverse adjustment of the plate and valve by providing slotted fastener access holes on the valve flange and close-tolerance valve flange guide shoulders on the mounting plate. Cooperative calibration plates on adjacent valve flange and mounting plate surfaces facilitate precise angular adjustment of the valve.

Abstract: A vacuum breaker valve-discharge elbow assembly for a rotary drum filter of the pipe machine type is adjustably mounted to the drive gear housing for the filter via a separate mounting plate. A valve flange comprising a separate clamping ring clamps the valve to the mounting plate. The mounting plate is in turn transversely and axially adjusted on the gear housing via adjusting bolts to accurately seat the valve within its valve housing in the drum. The discharge elbow is then secured to the mounting plate independently of the valve. The valve can be rotationally adjusted without limitation on the mounting plate without disturbing the prior axial and transverse adjustment of the plate and valve by loosening the clamping ring to enable rotation of the valve along close-tolerance guide surfaces of the mounting plate. Cooperative calibration plate and pointer on adjacent surfaces of the valve body and packing collar facilitate precise angular adjustment of the valve.

Abstract: A filter assembly includes a slidable tubular member which in a first position provides for flow communication from an inlet passage through a filter element to a filter chamber outlet. Upon removal of the filter housing and filter element the tubular member is biased to a second position to effect a flow shut off between the inlet passage and the tubular member. The filter assembly may further include an outlet passage in flow communication with the inlet passage, and a valve seat is axially aligned with the tubular member and disposed between the inlet passage and outlet passage. A valve member on the end of the tubular member is engageable with the valve seat to preclude flow between the inlet passage and outlet passage when the tubular member is in the first position and providing for flow communication between the inlet passage and the filter chamber outlet.

Abstract: A valve is provided for precisely controlling fluid flow at low flow rates and simultaneously filtering said fluid. The valve employs a resilient porous filtering medium interposed in the flow path and capable of undergoing adjustable compression by means of a threaded shaft associated with an external handle. When the filtering medium is compressed, it provides greater occlusion of the flow path, thereby diminishing flow rate through the valve. The valve is readily dismantled to facilitate cleaning or replacement of the filtering medium.

Abstract: A stacked-disc structure is comprised of a stack of annular discs (13) scalloped along the outer edge to provide lobes (13a) and etched on one side to provide lands (13a). A web (13d) is retained in the lobes to strengthen the discs so that they will not collapse due to high fluid pressure. The stack of discs is retained by a housing (10) having a fluted interior wall to retain the ends of the lobes. End plates (11 and 12) secure the stack of discs with a spacer (14) at one end having lands (14a) on lobes which match the lobes of the stacked discs to allow fluid to flow into, or out of, the spaces between the lobes of the stacked discs. The spaces between the lands on the etched discs provide passages for fluid flow into or out of the hollow core of the stack. The height of the lands (i.e., depth of the etch) determines the size of the smallest particle that will be permitted to flow through.

Abstract: A valve for preventing the loss of fluid from a fluid circuit in an engine block when a screw on filter element located at a low point in the circuit is removed includes a bore in the engine block having an inlet passage connected to the bore near a valve seat which connects the bore to the outside of the engine block. The bore contains a poppet valve having a threaded end for engaging the filter element and a pin and spring combination passing through a longitudinal slot in the poppet valve to cause the poppet valve to block the bore to prevent the loss of fluid. The poppet valve is hollow and open to an outlet passage in the engine block which is spaced away from and is always blocked from the inlet passage. The through passage has a check surface and contains a check ball and check spring which are disposed between the pin and the threaded end of the poppet valve.

Abstract: A rotary drum filter of the center valve type has replaceable valve seats in the form of pairs of opposed arcuate valve seat segments which are threadedly connected to channel sidewall portions of the drum in the region of the annular channel which receives the relatively stationary arcuate valve member. Each valve seat segment has a corner indentation between radially and axially outer faces thereof for seating the valve member.

Abstract: The improvement in a blood filtration unit for filtering multiple units of blood comprising means for filtering air entering the unit.

Abstract: The filter assembly employs a closure portion having fluid inlet and outlet ports integral therewith enabling in-line use of the assembly. Associated with such closure is a spring biased valve handle, whereby rotation of the handle along a prescribed course of travel enables simultaneous closing of the inlet and outlet ports thusly permitting free movement of the filter assembly body from the closure. A vent is provided in the closure which acts to relieve internal pressure within the assembly thereby further enabling easy removal of the filter body.

Abstract: A filter assembly comprises a cover member detachably mounted on a stationary support and a support member attached to the cover member in axially spaced relationship therefrom. A tubular screen, having a filter disposed therein, is disposed axially between the cover and support member and defines an annular passage between it and the filter. In normal operation, fluid is communicated from an inlet, through the screen and filter and to an outlet. When the pressure of the fluid in the passages exceeds a predetermined level, the fluid is communicated from the inlet and through the screen and passage to open a bypass valve mounted in the cover to communicate the fluid directly to the outlet. A plurality of magnets are preferably secured on an underside of the support member and adjacent to the inlet to uniformly disperse the fluid thereby and to pick up metallic contaminants.

Abstract: A fluid filtering device comprises an inner member having an inner axial passageway for the fluid, and an outer housing radially spaced from the inner member to define therewith an outer axial passageway for the fluid, the inner member being formed with a radial passageway providing a communicating path between the two axial passageways for the fluid. A filter is disposed with the device upstream of the radial passageway in the path of the fluid flowing through the passageway, and a deflector is disposed within the axial passageway of the inner member on the upstream side of its radial passageway to deflect the fluid to flow through the radial passageway and through the filter. The deflector has a cylindrical wall disposed within the inner member and extending axially thereof, and a transverse wall extending transversely across the axial passageway of the inner member.

Abstract: This invention relates to an exhaust valve to remove air under pressure from the sand magazine of a core or molding machine apparatus which reduces the noise of the exhaust and which includes a housing member for a reciprocable piston that controls an exhaust port of substantial size in such housing and a screen housing projecting through the wall of the sand magazine with a screen mounted in the screen housing to filter incoming air through a relatively large inlet port.