Class / Patent application number | Description | Number of patent applications / Date published |
210130000 | Fluid pressure responsive by-pass | 73 |
20080202993 | METHOD AND APPARATUS FOR TREATING SOLID WASTE - An apparatus for treating solid waste to produce a biomass product includes a cylindrical vessel includes a cylindrical vessel comprising a loading doorway and a discharge doorway at opposite ends of the cylindrical vessel. At least two drive tires are mounted on the cylindrical vessel perpendicular to the cylindrical axis. The drive tires each include a smooth exterior surface for rotating the cylindrical vessel without gear teeth and without sprocket teeth. A drive mechanism is coupled to the drive tires for rotating the cylindrical vessel around the cylindrical axis. The drive mechanism includes drive wheels that support and provide torque to the cylindrical vessel from a contact surface on each of the drive wheels that contacts the exterior surface of the drive tires. | 08-28-2008 |
20080230452 | Spool valve - A spool valve includes a sleeve, a spool and a filter. The sleeve is configured into a generally tubular form and has an opening, which communicates between inside and outside of the sleeve. The spool is axially slidably supported in the sleeve to change an opening degree of the opening of the sleeve. The filter is installed to the opening of the sleeve to filter fluid, which passes through the opening. The filter is configured into a generally rectangular form such that four outer edge portions of the filter are placed generally in a common imaginary plane. The sleeve includes two guide grooves that receive two opposed sides, respectively, of the filter. | 09-25-2008 |
20090001001 | Cleaning systems and methods for removing foreign substances from lighting surfaces on vehicles - A cleaning system for a lighting surface of a vehicle having a brake system comprising at least one tank of pressurized air, comprising at least one accumulator, a bleed valve assembly, at least one nozzle assembly, and a control valve assembly. Operation of the control valve assembly selectively allows and prevents pressurized air within the accumulator to flow to the at least one nozzle assembly. The bleed valve assembly controls the flow of air from the at least one tank of pressurized air to the at least one accumulator such that flow of pressurized air from the accumulator to the at least one nozzle assembly does not adversely affect operation of the brake system. | 01-01-2009 |
20090095665 | Anti-Drainback Valve For An Oil Filter - An anti-drainback apparatus for an oil filter assembly includes an anti-drainback valve formed from an elastomeric material. The anti-drainback valve is operable to selectively restrict reverse flow through the oil filter assembly. The anti-drainback valve is generally frusta-conical in shape and includes at least one relief valve to selectively open in the presence of a predetermined pressure to allow reverse flow through the oil filter assembly. An oil filter assembly is also provided incorporating the disclosed anti-drainback valve. | 04-16-2009 |
20090120853 | ENDLESS STREAM FISH TANK - A single tank configuration of a fish tank or livewell includes an outer container; an inner container installed inside the outer container, the inner container having a first end with an entry hole and a second end with an exit hole; and a pump installed between the inner and outer containers at one end of the fish tank or livewell for facilitating water circulation inside the fish tank or livewell. The inner and outer containers have an elongated shape. A double tank configuration of a fish tank or livewell includes two single tanks; connecting pipes for connecting the two single tanks to each other; and at least one pump installed between the two single tanks ( | 05-14-2009 |
20090127170 | Filter device, especially for filtering liquids in internal combustion engines - A filter device for filtering liquids in internal combustion engines has a filter housing and a filter element inserted into the filter housing. A liquid to be filtered is introduced into the filter housing and flows through the filter element. An overflow valve is arranged between an entry side and a clean side of the filter element and has a valve body. The overflow valve is in an open position when a pressure of the liquid at the entry side of the filter element exceeds a threshold value. The valve body of the overflow valve is a sealing hose placed between the entry side and the clean side onto a cylindrical supporting body arranged in the filter housing. Flow openings are provided in the cylindrical supporting body. The sealing hose is arranged at the clean side of the supporting body. | 05-21-2009 |
20090127171 | WATER SUPPLY SYSTEM WITH FILTRATION AND RETROFIT ASSEMBLY - A water supply system in accordance with the invention includes pumping in which there is a mechanical co-dependency between the generations of liquid-draw pressure and filtration-drive pressure, but a hydraulic dependency of the application of the filtration-drive pressure upon release of water from the liquid-draw pressure. In one preferred embodiment, the system is enabled by a retrofit assembly in which a second, filtration-drive pump is mechanically connected to the pump handle of a water intake pump. The retrofit assembly may include multiple arms and hinge points for coupling the second pump to the pump handle, as well as a flow path from the output of the water intake pump to the input of the second pump and a flow path from the second pump to a filtration system. The flow path between the two pumps typically includes an unfiltered water outlet. | 05-21-2009 |
20090145825 | Filter Arrangement for Liquids - A filter arrangement for liquids has a filter housing with a bottom part and a top part. A cylindrical filter element is inserted axially into the filter housing. At least one seal that, after assembly of the filter arrangement, effects closure of at least one return device for unfiltered liquid to be filtered is provided. The at least one seal is a beak valve arranged in the filter housing, wherein the at least one seal prevents return of unfiltered liquid as well as of filtered liquid of the filter element. | 06-11-2009 |
20090173676 | SMALL SCALE REVERSE OSMOSIS SYSTEM COMPRISING A DOUBLE VALVE PERMEATE PUMP - In a small-volume reverse osmosis system with a reverse osmosis module, a concentrate line leading from the reverse osmosis module to an outlet line, a permeate line leading from the reverse osmosis module to a storage tank, as well as a permeate pump connected to the concentrate line and to the permeate line with a displacement unit and two control channels, the invention proposes that two valves that are alternately switched by the displacement unit ( | 07-09-2009 |
20090178963 | Two Part Resilient Combination Bottom Support and Relief Valve End Seal Assembly for Fluid Filters - A fluid filter is described, comprising a filter body defining a cavity for a filter element, a first end cap for fitting on one end of the filter body, having an integrated single piece anti drain back valve and seal, and a second end cap for fitting on an opposite end of the filter body, having an integrated two part relief valve and supports for the filter element, formed by a relief valve body and a relief valve disc. | 07-16-2009 |
20090178964 | One Piece Combination Anti-Drain Back and Relief Valve - A fluid filter and an end cap of the fluid filter are described. The filter may be a spin on oil filter, which includes a combination dual valve element defining an integral anti-drain back valve and an integral relief valve, a retainer assembly for maintaining the combination dual valve element in position in the end cap, relative to the filter. The combination dual valve element includes a ADB sealing lip forming an anti-drain back valve portion, and a RV sealing lip forming a relief valve portion. | 07-16-2009 |
20090211955 | Anti-Drainback Valve with Position Positive Locking for Spin-on Oil and Fuel Filters - An anti-drainback valve contains a locking mechanism for securing the valve into to a filter assembly. The locking mechanism is made up of at least two keys that extend from the valve into beyond a cap of the filter assembly in order to secure the valve within the filter assembly. When multiple keys are employed, such keys may be equally spaced around the circumference of the cap. Manufacturing costs are kept minimal as minimal material is required and a two part mold may be employed during manufacturing. | 08-27-2009 |
20090255860 | Greywater diversion and hair catcher assembly for baths that is comprised of the novel assembly of a hair catcher mesh cup, a two-port valve, a direct-drain waste-overflow assembly, and an indirect-drain waste-overflow assembly - Greywater diversion of bathwater for reuse is fast becoming a global necessity; however, there is a need for a device that separates the diversion function from the utilization system for reasons including backflow situations and odor control. Further, said device must be able to be installed in typical bath installation; further, the fiber filtering function must be located in a readily accessible position within the assembly. This invention describes the novel combination of a strainer-mounted hair catcher mesh cup, a two-port full-port variable-aperture valve, an indirect waste overflow fitting, and a direct waste overflow fitting to comprise a greywater diversion assembly that allows for easy cleaning, emergency backflow of greywater to the primary sanitary drain system, and installation within the restricted space beneath a bath in a typical North American bathroom. | 10-15-2009 |
20090301949 | Filtering System, in Particular for Filtering Liquids in Internal Combustion Engines - A filtering device for filtering liquids in internal combustion engines has a filter housing and a filter element inserted into the filter housing. A cover disk closes off the filter housing. The cover disk consists of two individual disks and a central flow connection connects the two individual disks. The two individual disks and the flow connection form a common plastic component. | 12-10-2009 |
20090301950 | FILTER WITH BAYONET COUPLING TO COVER - 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. | 12-10-2009 |
20100000918 | Two Piece Non-Metallic Relief Valve - A fluid filter is described, which includes a housing having a first end portion defining fluid inlet and fluid outlet areas, a filter media disposed in the housing, having inlet surfaces communicating with the fluid inlet and outlet surfaces communicating with the fluid outlet, and a relief valve assembly for selectively opening a filter bypass connecting the fluid inlet and the fluid outlet. The relief valve assembly has a media plug for anchoring it in the filter media, the media plug having a bypass aperture connecting to the fluid outlet, and a valve element secured to the media plug. The valve element has a valving portion cooperating with the bypass aperture in the media plug for resiliently closing the bypass aperture when an inlet fluid pressure is below a threshold pressure, and for opening the bypass aperture when the inlet fluid pressure is above the threshold pressure. | 01-07-2010 |
20100140151 | Fluid Filter Element - A filter element is removably positionable within a filter housing defining a filter chamber for said filter element. The filter housing comprises a standpipe extending within the filter chamber. The filter element includes a tubular filter media circumscribing the standpipe, a first end cap supporting the filter media at one end thereof, a second end cap longitudinally spaced from the first end cap and supporting the filter media at the opposite end thereof, and a center tube extending between the first and second end caps. The center tube has at least one inlet opening therethrough, a bypass opening at a first end thereof adjacent to the first end cap and a standpipe opening at a second end thereof adjacent to the second end cap and through which the standpipe is adapted to be inserted longitudinally into the center tube. | 06-10-2010 |
20100193417 | Exchangeable Filter - The invention concerns of exchangeable filter ( | 08-05-2010 |
20100219113 | Device for Filtering Pressurized Oil - A device for filtering oil circulating in a hydraulic circuit for operating hydraulic actuators has at least one inlet port for the oil entering the device, at least one outlet port for oil flowing out of the device, a main filter to filter the oil flowing from the inlet port to the outlet port, at least one auxiliary or discharge port and one or more by-pass ports to place the device in fluid communication with an oil accumulator. A main valve assembly is arranged between the main filter and the auxiliary or discharge port. The device extends along an axis and has by-pass valves arranged between the inlet port and the by-pass ports. The by-pass valves are radially arranged about the main valve assembly. | 09-02-2010 |
20100224538 | Method Of Filtering And Filter Device - Method of filtering and a filter device having a housing ( | 09-09-2010 |
20100224539 | ELEMENT WITH BYPASS SEALING ELEMENT - A filter element includes in an end cap assembly an internal bypass valve such that the bypass valve can be replaced along with the filter element. Additionally or alternatively, the filter element end cap assembly has a reverse flow valve for enabling reverse flow across the filter element without passage through filter element. | 09-09-2010 |
20100282652 | FILTER END CAP ASSEMBLY WITH BYPASS VALVE - A filter assembly, filter element and methods are provided. The filter assembly includes a filter base in which a filter element is mounted. The filter element includes a bypass valve carried by the filter element that operates independent of and free of interaction with the filter base. Methods include providing an entirely new bypass valve for the filter assembly by inserting a filter element including a complete bypass valve into the filter base such that bypass valve structures of the filter base are rendered useless or superfluous. | 11-11-2010 |
20100314303 | THREE-STAGE FUEL FILTER - A fuel filter has a coalescent element for separating water from fuel, a prefilter element, a main filter element, and a common central tube, wherein the coalescent element, the prefilter element, and the main filter element are arranged sequentially along the common central tube. A fuel filter arrangement has a housing in which the fuel filter is arranged. The common central tube of the fuel filter is attached to the housing, wherein between the fuel filter and the housing an annular space is formed. | 12-16-2010 |
20110031173 | Cylindrical Inline Fluids Filter - A fluids filter is presented that is cylindrical in shape and can be adapted to fit inline with any pipe system. The filter is comprised of an outer solid cylinder and an inner cylinder possessing multiple filter means, including a replaceable fine mesh or material filter. An absorbent boom can be placed in the filter system to absorb hydrocarbons or other materials. | 02-10-2011 |
20110147284 | SELF POWERED WATER PURIFICATION SYSTEM - A water purification unit to purify potentially contaminated water is provided. The water purification unit is in fluid communication with a water source and has a pump to draw water from the water source. The water is passed through at least a main filter to purify the water and dispensed through an outlet. Power is provided to the water purification unit by a battery bank and a non-grid power source. | 06-23-2011 |
20110220563 | FILTER DEVICE AND FILTER ELEMENT - The invention relates to a filter device. The invention further relates to a filter device comprising a filter element ( | 09-15-2011 |
20120031822 | FILTER END CAP ASSEMBLY WITH BYPASS VALVE - A filter assembly, filter element and methods are provided. The filter assembly includes a filter base in which a filter element is mounted. The filter element includes a bypass valve carried by the filter element that operates independent of and free of interaction with the filter base. Methods include providing an entirely new bypass valve for the filter assembly by inserting a filter element including a complete bypass valve into the filter base such that bypass valve structures of the filter base are rendered useless or superfluous. | 02-09-2012 |
20120037549 | COMBINATION OF A FILTER ELEMENT AND A CORE ELEMENT, AND A FILTER ELEMENT - A combination ( | 02-16-2012 |
20120091047 | OIL RESERVOIR COMPRISING AN OIL FILTER - An oil reservoir having an oil inlet fitting and at least one oil outlet fitting for connecting to a hydraulic system. The reservoir comprising a housing having a lower housing part and a reservoir cover which is connected to the lower housing part and includes an integrated oil filter. An oil filler neck, which can be closed by a cap, is configured on the housing cover. The reservoir housing is equipped with at least one guide element which is attached to at least one inside wall of the reservoir housing and forms a circular guidance track for the oil. This guidance track forces the oil flow in a circular manner, after entering the reservoir and passing through the oil filter but before exiting the oil reservoir, such that any air which may be present is separated from the oil and can exit the oil reservoir via an air outlet. | 04-19-2012 |
20120097586 | Device for filtering and deaeration of fuel oil with return changeover valve - In a device ( | 04-26-2012 |
20120193275 | FILTER ELEMENT USING PLASTIC CAP INTEGRATED WITH RELIEF VALVE - The present invention relates to a filter element using a plastic cap integrated with a relief valve, wherein a net type core | 08-02-2012 |
20120199522 | FILTER WITH BAYONET COUPLING TO COVER - 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. | 08-09-2012 |
20120217191 | FILTER DEVICE - A filter device may include a filter housing having at least one filter element configured to separate the filter housing into a raw side and a clean side. A bypass valve may control a bypass for circumventing the at least one filter element, wherein the bypass valve may have a valve member for controlling a bypass opening connecting the clean side of a coupling chamber of the bypass valve with the raw side. The valve member may be configured to close the bypass opening via a pretension generated by a closing spring. The bypass valve may be an actuating device for changing the pretension acting on the valve member and the actuating device may be coupled with at least one control chamber and configured to set the pretension acting on the valve member based at least in part on a control pressure of the control chamber. | 08-30-2012 |
20120234741 | Air Compressor with Oil Pump Inlet Strainer and Bypass Valve - An air compressor with oil pump inlet strainer bypass features includes a bypass valve assembly in fluid communication with the air compressor crankcase to provide lubricating oil to the dynamic compressor components, or simply to the air compressor. The bypass valve assembly includes a valve housing defining an interior chamber and an oil strainer screen engaged with the valve housing to filter the lubricating oil entering the interior chamber. A bypass valve is in fluid communication with the interior chamber and includes a valve body having a bypass port and an indicator port. An optional suction tube is connected to the bypass port on the valve body. An indicator assembly is connected to the indicator port on the valve body. | 09-20-2012 |
20130068677 | FILTER GROUP FOR INTERNAL COMBUSTION ENGINES - A filter cartridge for fuel, includes a first filter element and a second filter element, which is of a flat type and is located downstream of the first filter element with reference to a direction of the fuel, the filter elements are configured such as to be crossed in series by the fuel, in which the first filter element is a depth filter and has a mean porosity value which is greater than the porosity of the second filter element and which is such as to retain large-dimension paraffins and a part of smaller-dimension particulates, while enabling passage of small-dimension paraffins. | 03-21-2013 |
20130092611 | OIL RESERVOIR WITH BAFFLE - An oil filter reservoir includes a reservoir housing having a filter, which divides the housing into an oil inlet chamber and an oil outlet chamber. A housing inlet and a housing outlet circulate oil in and out of the reservoir housing. The filter includes a permeable wall and a bypass valve, which releases the increased oil pressure and volume in the inlet chamber during cold temperature operation. A baffle in the outlet chamber is spaced apart from the bypass valve and permits limited oil flow through the baffle. The baffle separates the outlet chamber into a reserve chamber and a bypass chamber. | 04-18-2013 |
20130270162 | Liquid filter having a filter bypass valve and filter insert therefor - Liquid filters comprising a housing having a removable cover, a liquid inlet, an outlet, a replaceable hollow cylindrical filter material insert, and a filter bypass valve comprising a valve seat arranged on the filter insert and a valve body that interacts with the valve seat and is biased in the closing direction. Two radially spaced closed sealing contours are provided between the valve seat and the valve body. At least one bypass channel, connecting the unfiltered and filtered side of the filter while bypassing the filter insert, passes through the valve seat between the sealing contours. The valve body is movably guided in the housing on a housing part, the two sealing contours are offset from each other in the axial direction, and the valve body has a corresponding conical or tapered or dome-like shape in the sealing area of the valve body that interacts with the sealing contours. | 10-17-2013 |
20130306531 | FILTER CARTRIDGE - A filter cartridge ( | 11-21-2013 |
20140183112 | KIDNEY LOOP FILTRATION SYSTEM FOR FUEL DELIVERY SYSTEM - A fuel delivery system is described in the present disclosure. The fuel delivery system includes a kidney loop filtration system for filtering fuel stored in a tank. The kidney loop filtration system is fluidly connected to the tank and to a fuel transfer pump. The kidney loop filtration system includes a pump, at least one primary filter, and a swing-check valve. The swing-check valve allows flow of fuel in a first direction in a first mode of operation and in a second direction in a second mode of operation. The swing-check valve further includes a flow passage and a perforated flap. The perforated flap filters fuel during the flow of fuel, in the second direction. | 07-03-2014 |
20150129470 | Side Seal Relief Valve - A fluid filter includes a filtering medium and a relief valve. The relief valve includes an opening and is disposed between opposite longitudinal ends of the filtering medium. The filtering medium may include a plurality of pleats, and the relief valve may couple planar surfaces of two pleats. The opening of the relief valve may be directly connected to an outlet of the fluid filter, so that flow of fluid through the opening bypasses the filtering medium. | 05-14-2015 |
20150337695 | LIQUID FILTER WITH A FILTER BYPASS VALVE AND WITH A CENTRAL DISCHARGE DUCT, AND FILTER INSERT FOR A LIQUID FILTER - A liquid filter having a housing with a removable cover and an exchangeable cylindrical insert enclosed by two end disks. The filter has a bypass valve and the upper end disk has a central valve seat interacting with a valve body. The housing has a central discharge duct, with a closure pin fixed in the duct which is axially adjustable between closed and open positions. The filter has a valve body carrier connected, with limited axial displaceability, to the pin. The carrier, on its free end, has the bypass valve body, and onto which the insert end disk is mountable. The carrier is preloaded with a force, acting in the closing direction of the valve via a housing spring. During mounting of the insert onto the carrier, a force acting in the closing direction of the closure pin can be exerted directly on the pin by the insert. | 11-26-2015 |
20150343382 | REVERSE OSMOSIS SYSTEM WITH VALVES FOR CONTROLLING A WORK EXCHANGER SYSYEM - A system and method for the structure and operation of a work exchanger system in a reverse osmosis plant is disclosed. The work exchanger system is characterized by a an array of multiple work exchanger chambers each being individually controlled and operated to a meet an aggregate need of pressure recovery by the entire system. Each work exchanger chamber is characterized by at least one valve having a bypass system which is configured to equalize pressure on both sides of the valve. Such an equalizing process's delays are monitored and controlled by the central systems' controlling system to create no restrictions to reject high pressure brine flow in a reverse osmosis system at any given time. | 12-03-2015 |
20160030865 | Spherical Contact Ball Joint Style Spool Relief Valve for Filter Applications - A cartridge forming part of a fluid filter includes a filter element, an end cap overlying one end of the filter element, a central tube having one end secured to the end cap, a biasing element, and a relief valve having a valve piston with a head that is biased by the biasing element into engagement with a valve seat formed by an underside of the end cap. The valve seat is configured so that it has a curvature that is larger than that of the head of the valve piston. In the particular arrangement disclosed, a second end cap overlies another end of the filter element, axially opposite the end cap mentioned, and is also secured to the central tube. Preferably, at least one of the central tube and the valve piston defines a depending pilot for supporting an end of the biasing element. | 02-04-2016 |
20160107110 | FILTER ASSEMBLY FOR FLUID SUPPLY SYSTEM - A filter assembly includes housing and a filter device disposed within the housing to define a circumferential cavity therebetween. The filter assembly further includes a bypass valve having a housing wall, multiple inlets and an outlet formed on the housing wall, and a valve member. A first end of the valve member is coupled to a valve seat and a second end of the valve member engages with the outlet of the bypass valve. The valve member is displaced from a first position to a second position when pressure of fluid in the circumferential cavity is greater than a biasing force of a spring, and wherein the valve member engages with the outlet port of the bypass valve against the biasing force of the spring in the first position and the valve member allows the fluid to flow into the hollow center tube in the second position. | 04-21-2016 |
20160152497 | WATER TREATMENT SYSTEM | 06-02-2016 |
210131000 | By movement of separation medium | 7 |
20090127172 | Oval seal cartridge with no dirty drip - An assembly is disclosed that includes a centerpost assembly and a fluid filter cartridge. The centerpost assembly includes a main body having an inlet flow opening, an open interior, and a radial flange. An interior shelf is positioned proximate the inlet flow opening of the main body. The interior shelf includes an interior flow opening. A check valve ball is movably positioned on the interior shelf to move between the inlet flow opening and the interior flow opening. A spring-loaded end cap is movably connected to an upper end of the main body and is configured to move between a compressed state and an uncompressed state. A blocking pin extends from a lower surface of the end cap. When the end cap is in the compressed state, the blocking pin prevents the check valve ball from blocking a flow of fluid from flowing through the interior flow opening. | 05-21-2009 |
20090184036 | FLUID FILTER FOR COMBUSTION ENGINE SYSTEMS AND METHODS - Described herein are embodiments of a fluid filter for combustion engine systems and associated methods. According to one exemplary embodiment, a fluid filter apparatus for reducing re-entrainment of contaminant particles into post-filtration fluid flow due at least in part to a fluid flow surge includes at least one fluid filter and a fluid flow diverting element that is coupled to the fluid filter. The fluid filter includes at least one fluid filtering medium that is communicable in fluid flow receiving communication with a fluid flowing along a first fluid flow path during a fluid flow non-surge event. During a fluid flow surge event, the fluid flow diverting element is capable of diverting at least some of the fluid from the first fluid flow path to a second fluid flow path. | 07-23-2009 |
20110253607 | Power Steering Filter Assembly - A power steering fluid filter has a housing that defines an interior chamber, an inlet port communicating with the upstream end of the interior chamber, and an outlet port communicating with the downstream end of the interior chamber. The housing is for spicing inline with a power steering fluid hose via its inlet and outlet ports. A thimble filter is disposed within the housing and an annular magnet is located at the mouth of the thimble filter. A spring biases the thimble filter and magnet toward the inlet port of the housing. In use, power steering fluid passes through the housing and debris is captured by the thimble filter. Ferrous particles entrained in the fluid flow are attracted to and captured by the magnet. When the thimble filter becomes clogged, it is displaced by the pressure of the fluid against the clogged filter so that fluid can flow around and bypass the thimble filter while still being exposed to the magnet for removing ferrous particles. The housing is formed by two housing portions telescopically connected together and held with a locking clip that can be easily removed to release the housing portions to allow the filter and magnet to be replaced. | 10-20-2011 |
20110253608 | FILTER ARRANGEMENT FOR FILTERING LIQUIDS - A filter arrangement for filtering liquids has a central tube and a first filter element flowed through in radial direction outwardly and disposed on the central tube. A downstream second filter element is disposed on the central tub and flowed through in radial direction inwardly. The first filter element is moveable along the central tube from a basic position into an extended position. In the basic position a connection between the inlet line and a clean side of the first filter element is provided by the first filter element. In the extended position a bypass between an inlet line and the clean side of the first filter element is provided to bypass the first filter element. A spring element, applying a restoring force in a direction of extension of the central tube, is arranged on the first filter element at a side facing away from the second filter element. | 10-20-2011 |
20150101969 | AUTOMATICALLY RETRACTABLE SCREENS FOR STORM DRAIN CURB INLETS - Embodiments of the invention provide automatically retractable screens, adapted for installation into a storm drain curb inlet, configured such that the automatically retractable screens are biased toward the closed position and thereby reliably closed during periods of no, low, or moderate surface runoff water flows, yet also reliably open when surface runoff water flow rates increase to moderate or high levels. | 04-16-2015 |
20160059164 | FLUID INLET SCREEN BEING MOVEABLE TO BYPASS POSITION - A fluid filter assembly comprises an outer housing, a filter element including a face, and a filter portion extending from the face. The housing has an inlet and an outlet. A spring biases the face against a housing structure at the inlet. A pressure drop across the filter assembly biases the filter element against the spring force such that if the pressure drop exceeds the spring force, the filter element can move to a bypass position. A hydraulic system is also disclosed. | 03-03-2016 |
20160178294 | DEBRIS FILTRATION APPARATUS | 06-23-2016 |
210132000 | With additional separation or treating means | 9 |
20080308474 | Diesel Fuel Filter - A diesel fuel filter comprising an outer casing ( | 12-18-2008 |
20090057213 | LIQUID FILTER ASSEMBLY; AND METHODS - A liquid filter assembly is provided. The preferred assembly includes a serviceable filter cartridge having a primary filter section and a secondary or bypass filter section. The preferred assembly includes a bypass valve arrangement and a suction filter arrangement. The suction filter arrangement preferably includes a dimensionally biased valve arrangement, preferably one which is devoid of a helical coiled spring, to control flow through the suction filter. A flow/pressure regulation valve, to allow flow from an interior of the assembly to a reservoir if needed, is preferably provided. Preferred serviceable filter cartridges are shown. | 03-05-2009 |
20090065411 | Filter Cartridge with Pressure Relief Valve - A filter cartridge includes a substantially cylindrical filter media and a pressure relieving structure. The filter media is adapted to allow fluid to pass from an exterior of the filter media to an interior space of the filter media. The pressure relieving structure is disposed at an upper end of the filter media, and the pressure relieving structure opens when a predetermined pressure level is established across the filter media to maintain the predetermined pressure across the filter media. | 03-12-2009 |
20090255861 | Filtration device with a pressure-activated means for bypassing serial filter layers - A serial-flow filtration device is provided with pressure-activated means for by-passing at least one of its constituent layer (or layers) of filtration material. The filtration device comprises a housing, a fluid inlet, a fluid outlet, and at least an upper and a rearmost filter layer. The upper filter layer divides the interior of the housing into an upstream zone and a downstream zone, with the rearmost filter layer residing in the downstream zone. The fluid inlet enables the introduction of fluid into said upstream zone. The fluid outlet enables releases of the fluid from said downstream zone. The upper filter layer, but not the rearmost filter layer, has integrated thereinto a pressure-activated means capable of allowing substantially non-selective passage of fluid from the upstream zone into the downstream zone upon the attainment of a predetermined pressure differential across said upper filter layer. The bypass means can be embodied, for example, as a pressure-breachable seal or as a pressure-activated gate. | 10-15-2009 |
20100051524 | FLUID TANK WITH KIDNEY-LOOP FILTRATION SYSTEM - A return flow filtration assembly for filtering return hydraulic fluid is provided. The filtration assembly includes a first return fluid chamber including a first inlet and first and second of outlets. The second outlet is configured to be coupled to a secondary return flow filter for providing micro-filtering of the return fluid. The first outlet includes a restriction element for restricting flow through the first outlet and generating an artificial back pressure within the first return fluid chamber to drive fluid through the second outlet, when the second outlet is coupled to a secondary return flow filter. | 03-04-2010 |
20110303592 | Filtration Device with Pressure-Activated Means for Bypassing Serial Filter Layers - A serial-flow filtration device is provided with pressure-activated means for by-passing at least one of its constituent layer (or layers) of filtration material. The filtration device comprises a housing, a fluid inlet, a fluid outlet, and at least an upper and a rearmost filter layer. The upper filter layer divides the interior of the housing into an upstream zone and a downstream zone, with the rearmost filter layer residing in the downstream zone. The fluid inlet enables the introduction of fluid into said upstream zone. The fluid outlet enables releases of the fluid from said downstream zone. The upper filter layer, but not the rearmost filter layer, has integrated thereinto a pressure-activated means capable of allowing substantially non-selective passage of fluid from the upstream zone into the downstream zone upon the attainment of a predetermined pressure differential across said upper filter layer. The bypass means can be embodied, for example, as a pressure-breachable seal or as a pressure-activated gate. | 12-15-2011 |
20130327689 | FILTER WITH A BYPASS MECHANISM FOR A HYDRAULIC SYSTEM - A reservoir for a hydraulic system includes a housing having an inlet and an outlet. The inlet is adapted to receive an incoming fluid and is formed within an inlet tube that extends into the housing. A filter within the housing, includes a filter element, defining an inner filter chamber, and includes an inlet opening encompassing the inlet tube that extends into the housing. The inlet opening allows the incoming fluid to enter the inner filter chamber for filtration. A base wall around the inlet opening includes a guide step that guides a relative movement between the reservoir and the filter. A relative movement between the filter and the reservoir facilitates the base wall, the guide step, and the inlet tube, to co-operate and establish a bypass route for selectively allowing the incoming fluid to bypass the filter, depending upon a predetermined differential pressure between the inlet and the outlet. | 12-12-2013 |
20160017900 | FILTER DEVICE - A filter device, comprising at least one first connection (A | 01-21-2016 |
20160101378 | IN-LINE SINGLE OUTLET FILTER WITH AUTOMATIC CLOGGED FILTER ELEMENT BYPASS - An in-line or in situ filter is disclosed for filtering fluid flowing through a hydraulic system, and particularly an automotive hydraulic system. The filter has a magnetic base with a central opening at its outlet end and a seat with a central opening at its inlet. The base and the seat are joined by a cylindrical filter element made of a magnetically susceptible mesh screen material. A spring within the filter element biases a ball against the central opening of the seat normally sealing off the opening and forcing fluid to flow through the filter element to be filtered before exiting through the central opening of the base. If the mesh screen becomes clogged, backpressure forces the ball away from the seat against the bias of the spring to allow fluid to bypass the filter element and flow directly through the filter. In the process, ferrous debris entrained within the fluid flow continues to be captured by attraction to the magnetic base and the magnetized filter element. | 04-14-2016 |
210133000 | In inlet and outlet closure header | 12 |
20080272036 | Oil filter by-pass adapter - An oil filter by-pass adapter for placement between an internal combustion engine block and a spin-on type oil filter comprising a wafer plate having a first face adapted to contact the engine block, and a second face adapted to contact the oil filter. The second face has a peripheral wall to retain the oil filter. A central through passage extends through the wafer and provides clearance for the oil to enter and exit the oil filter. There is a choked flow oil conduit from the input oil stream having at least one oil transfer passage which takes oil from before the oil filter and passes it to an oil transfer channel. The oil filter by-pass adapter can be an ultra high molecular density plastic or aluminum. The oil filter by-pass adapter oil transfer passages are between 1/64- 7/64 inches in diameter and the oil transfer channel is between 3/64-¼ inches in diameter. | 11-06-2008 |
20080296210 | FLUID TREATMENT DEVICES - A fluid treatment device includes at least one treatment module (“pod”) releasably connected to a head unit, the pod and head unit each including riser tubes which may be connected to adjacent riser to form a flow passage through the fluid treatment device. A connection mechanism allows a control valve to be rotatably connected to a fluid treatment device so that it may be oriented as desired. | 12-04-2008 |
20090050547 | Additive Releasing Oil Filter - An oil filter for dispensing additive into oil used in an engine, comprises: a canister; a filter within said canister, said filter having an outside and an inside and defining a space between the filter outside and the canister; a chamber within the canister and defined by a member having an opening therethrough; at least one additive disposed in said chamber; and a gate accruable between open and closed positions, said gate being disposed so as to occlude said opening when in the closed position and being disposed so as to allow fluid flow through said opening when in the open position. The additive may be in a solid form and may contact the oil when said gate is in the open position. The gate may be temperature- or pressure-actuated. | 02-26-2009 |
20090134078 | Oil filter assembly - An oil filter arrangement ( | 05-28-2009 |
20100012561 | MULTIPLE VALVE ASSEMBLY FOR REDUCING WATER LOSS FROM A LEAK - A valve assembly for reducing water loss from a leak from a water device. The valve assembly includes a first passage through which water flows from a water source to the water device and a second passage through which water flows from the water device. A first valve is in fluid communication with the first passage and the second passage. The first valve is operable for obstructing the first passage in response to a change in pressure differential between water in the first passage and water in the second passage resulting from a leak of water from the water device. The valve assembly also includes a second valve in fluid communication with the first passage. The second valve is responsive to the obstruction of the first passage to close the first passage and thereby stop water from flowing from the water source to the water device. | 01-21-2010 |
20100059427 | Filtering System, in Particular for Filtering Liquids in Internal Combustion Engines - A filtering system has a filter housing and a filter element and having a raw side and a clean side arranged in the filter housing. Liquid introduced into the filter housing flows through the filter element from the raw side to the clean side. An overflow valve is disposed between the raw side and the clean side of the filter element. The overflow valve is moved into an open position should a pressure of the liquid on the raw side of the filter element surpass a limit value. The overflow valve has an adjustable valve body loaded by a valve spring and made from plastic material. The filter element and of the filter housing structurally supplement one another such that the filter element is positioned precisely in the filter housing and relative rotation of the filter element relative to the filter housing is prevented. | 03-11-2010 |
20100065481 | LIQUID FILTER ASSEMBLY, COMPONENTS; AND METHODS - A liquid filter assembly is provided. The preferred assembly includes a serviceable filter cartridge having a primary filter section and a secondary or bypass filter section. The preferred assembly includes a bypass valve arrangement and a suction filter arrangement. A valve, to allow flow from an interior of the assembly to a reservoir if needed, is provided. Preferred serviceable filter cartridges are shown. | 03-18-2010 |
20110168613 | FILTER ASSEMBLY - A filter assembly comprises a filter housing ( | 07-14-2011 |
20120006731 | FILTER WITH REUSABLE BYPASS VALVE AND INNER ASSEMBLY - 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. | 01-12-2012 |
20120205300 | LIQUID FILTER ASSEMBLIES; FEATURES; COMPONENTS; AND, METHODS - Liquid filter assemblies, features, components and methods are described. In general, a liquid filter cartridge is provided which includes features that help ensure that when the assembly is serviced, the cartridge positioned within the assembly is a proper one, in proper sealing orientation, for appropriate use. Features that can be used to provide for this include: a seal on the filter cartridge that defines a seal pattern non-orthogonal to a plane perpendicular to a central axis of the filter cartridge; and, a member of a projection/receiver arrangement on the filter cartridge which is orientated to engage a portion of a liquid filter assembly, for example a liquid flow collar, to allow sealing when the cartridge is a properly positioned cartridge and a properly configured cartridge. Assembly features are described. Also, a flexible radial projection arrangement providing snap-fit interaction between a cartridge and housing is provided. Methods of assembly and use as described. | 08-16-2012 |
20130327690 | HYDRAULIC FLUID FILTER HAVING A BYPASS VALVE - A fluid filter having a filter basket is described. The filter basket defines a filter interior through a first wall, formed of a filter element, which surrounds the filter interior, and a second wall, located at the bottom of the filter basket, accommodating an inlet to receive a fluid. The second wall includes a bypass channel extending into the filter interior, defining a bypass inlet therein, which in turn includes a bypass valve for routing the fluid to bypass the filter element based on the pressure differential across the filter. Further, the second wall includes at least one collecting pocket where filtered contaminants of the fluid can deposit and accumulate. Here, the bypass inlet extends above the second wall, placing the bypass inlet above the at least one collecting pocket. | 12-12-2013 |
20140202939 | FILTER ELEMENT AND ASSEMBLY WITH BYPASS REVERSE FLOW FILTER END CAP - A filter element includes in an end cap assembly an internal bypass valve such that the bypass valve can be replaced along with the filter element. Additionally or alternatively, the filter element end cap assembly has a reverse flow valve for enabling reverse flow across the filter element without passage through filter element. | 07-24-2014 |