Filter Element Attached To Closure Patents (Class 210/454)
  • Publication number: 20020043506
    Abstract: A fuel filter assembly includes a filter element positioned within a hollow cylindrical filter housing and attached to the filter housing such that the filter element and filter housing rotate in unison. The filter housing includes an integral gripping surface, such as longitudinal ribs.
    Type: Application
    Filed: December 22, 2000
    Publication date: April 18, 2002
    Inventors: Aaron K. Amstutz, David C. Becktel, Terry L. Miller, Jeffrey R. Ries, Kevin K. Socha
  • Patent number: 6357600
    Abstract: A drip chamber (1) for body fluid and discharge kits, includes a hollow tubular external closure (2) with a connector (4,5,6) formed at a first end for an outward fluid-flow connection to an external circuit and a second open end (3) arranged opposite to the first end, and a monolithic filtering element (7), formed of a cylindrical filtering body (8) with a first end supported by the connector bottom (4), and of a plug (10) with an inward fluid flow tube (11) monolithically attached to a second end of the cylindrical filtering body (8) and hermetically attached to the second end (3) of the hollow tubular external closure (2).
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: March 19, 2002
    Assignee: GVS S.r.l.
    Inventor: Massimo Scagliarini
  • Patent number: 6345721
    Abstract: A filter assembly including a filter element having an extension of filter material potted in an end cap, the potting adhesive material potting the filtering material into the end cap and further adhering the end cap to a hub of a baffle plate. The end cap is an open end cap having an outer perimeter and an inner perimeter defined by a portion of the hub.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: February 12, 2002
    Assignee: Donaldson Company, Inc.
    Inventors: Reynold Frederick Durre, John Francis Connelly
  • Patent number: 6308473
    Abstract: A roof louver filter system for preventing snow from entering an attic of a building structure through a roof louver vent during inclimate weather conditions. The inventive device is comprised of an air permeable material that is formed into a U-shaped structure for being positioned within a roof louver. The U-shaped structure includes a front portion, a first side portion and a second side portion. The first side portion includes a first slanted edge and the second side portion includes a second slanted edge for conforming to the rear rim of the roof louver when installed. The inventive device is preferably constructed of a polyester fiber material thereby preventing water and insects from entering into the roof louver. The inventive device prevents snow from directly blowing into the attic of the building through the roof louver during inclimate weather conditions.
    Type: Grant
    Filed: April 27, 1999
    Date of Patent: October 30, 2001
    Inventor: Jamie Auck
  • Patent number: 6293410
    Abstract: A no-cure fuel filter and method of making same is disclosed. The no-cure fuel filter utilizes a non-organic, mineral based filter element which replaces the pleated paper type filter element of conventional fuel filters. The no-cure fuel filter may be used for gasoline blended fuels, ethanol blended fuels, diesel fuel blends, propane fuel blends, or methanol fuel blends, and may be used for primary filtration, secondary filtration or final filtration. The no-cure fuel filter comprises a non-organic mineral based filter element disposed along a path of flow of unfiltered fuel in a fuel system of a vehicle. The filter element includes an exterior periphery and an interior periphery and a first end and a second end. The no-cure fuel filter further comprises end caps disposed over and fluidly sealing the first and second ends of the filter element, such that the unfiltered fuel must pass through the filter element from one of the peripheries to the other periphery.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: September 25, 2001
    Assignee: Mahle-Parr Filter Systems, Inc.
    Inventor: Larry D. Forbes
  • Patent number: 6264831
    Abstract: An integrated fuel filter and fuel pump assembly with a water separation capability includes a fuel filter housing and a fuel filter element placed within the fuel filter housing. The fuel filter housing includes an outer surface with a connection interface for a fuel pump. This connection interface includes a fuel inlet port and mounting provisions for threaded fasteners. The fuel pump which completes the integrated assembly includes a fuel inlet and a fuel exit which is directly connected to the flow inlet of the housing. Further, the fuel pump is directly mounted to the outer surface of the housing in a unitized-type of arrangement. The upper endplate for the filter element is enlarged so as to extend beyond the outer diameter of the filter element and additional serve as a closing lid for the housing.
    Type: Grant
    Filed: October 11, 1999
    Date of Patent: July 24, 2001
    Assignee: Fleetguard, Inc.
    Inventors: Charles W. Hawkins, Zemin Jiang
  • Patent number: 6251273
    Abstract: A filter comprising a housing, which consists of at least two housing parts, and a filter element attached inside the housing. The invention provides for at least one latch element by means of which a detachable latched connection can be established between the filter element and at least one of the housing parts.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: June 26, 2001
    Assignee: Filterwerk Mann & Hummel GmbH
    Inventors: Heinz Jawurek, Erich Poldner, Heinz Wendt
  • Patent number: 6248237
    Abstract: A filter assembly including an integral filter cartridge and storage pouch is disclosed herein. The storage pouch is configured to hermetically surround the filter cartridge upon removal of the cartridge from an opening of a liquid drainage conduit of the assembly. The drainage conduit can include a shutter for closing the opening of the drainage conduit upon removal of the filter cartridge.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: June 19, 2001
    Assignee: Societe d'etudes et de Constructions Aero-Navales
    Inventors: Xavier Mery, Claude Chevallier
  • Patent number: 6240985
    Abstract: A remote filling device for use with a shipping container is described. A shipping container with specialized connections can be remotely opened using a single lightweight tool using a single drive screw latching mechanism. The actuation of the latching mechanism also compresses seals between the filling device and dewatering connections on the container. Dewatering is accomplished using reusable, backwashable filters. Once the container is filled and dewatered, the filling device is remotely removed and a lightweight, reusable lid is remotely scaled to the container using a single screw latch remotely actuated.
    Type: Grant
    Filed: February 23, 2000
    Date of Patent: June 5, 2001
    Assignee: Studsvik Inc
    Inventor: J. Bradley Mason
  • Patent number: 6235194
    Abstract: A recharge and filter assembly includes a housing with a removable recharge and filter cartridge. The housing includes a canister with a removable cover allowing access to the cartridge. The cartridge includes a filter element comprising a ring of media and upper and lower end caps. The upper end cap carries a peripheral seal which provides a fluid-tight seal with the housing canister. An annular channel is provided between an annular portion of the upper end cap and the seal. An annular support member from the cover is received in the annular channel to support the upper end cap. Latching fingers on the upper end cap and a mating ring on the cover removably couple the cartridge to the cover. The cartridge further includes a recharge canister supported by tabs on the upper and lower end caps. Fluid is recharged by inhibitor material, while particulates and other contaminants are removed by the filter media.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: May 22, 2001
    Assignee: Parker-Hannifin Corporation
    Inventor: Todd A. Jousset
  • Publication number: 20010000894
    Abstract: A preferred transmission filter (10) includes a first flange (18) transparent to a laser beam (58) and includes a second flange (20) opaque to the laser beam (58) and meltable upon exposure thereto. The flanges (18, 20) are in registered, abutting relationship with a laser weld bead (62) at the juncture (44) between the flanges (18, 20) to provide a fluid seal circumscribing the filter (10). The preferred filter manufacturing apparatus (12) includes a laser (54) coupled to a robot arm (50) controlled by a programmable logic controller (52). The controller (52) operates the robot arm (50) in order to direct the laser beam (58) through the first flange (18) onto the second flange (20) and along the juncture (44) to form the laser weld bead (62).
    Type: Application
    Filed: December 1, 2000
    Publication date: May 10, 2001
    Inventors: John W. Gizowski, Markus Beer, J. Thomas Schriempf
  • Patent number: 6217755
    Abstract: The filter head and filter housing define a liquid flow inlet path, a first liquid flow outlet path, and a second liquid flow outlet path. A filter media construction is positioned within the housing. The filter media construction, in combination with the housing, defines an unfiltered liquid volume, and a filtered liquid volume. A first liquid flow inlet path directs liquid from the liquid flow inlet to the unfiltered liquid volume. A first liquid flow outlet path directs liquid flow from the filtered liquid volume to the first liquid flow outlet. A second liquid flow outlet path directs liquid flow from the filtered liquid volume to the second liquid flow outlet. A first valve assembly selectively opens the second liquid flow path to passage of liquid therethrough in response to a first selected liquid pressure level within the filtered liquid volume.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: April 17, 2001
    Assignee: Donaldson Company, Inc.
    Inventors: Jack Stifelman, Johan Fobe, Angelo Schiavon, Enrico Greco
  • Patent number: 6015492
    Abstract: A fuel filter assembly includes a housing (12) with a removable element (24) mounted therein. The housing has an inlet port (14) in direct fluid communication with a chamber (18). The outlet port (16) is in direct fluid communication with a central standpipe (22). The standpipe has a flow element (42) movable therein for controlling the condition of flow openings (36) in the standpipe. The element includes projections (88) for engaging recesses (90) in a cover (28) to selectively latch the element and cover together. The cover further includes a cover projection (82) for supporting a projection (78) on end cap (60) of the filter element, which opens flow into the standpipe only when the element is installed. When the element is removed, the flow element prevents the introduction of contaminants into the standpipe.
    Type: Grant
    Filed: May 1, 1998
    Date of Patent: January 18, 2000
    Assignee: Parker Hannifin Customer Support Inc.
    Inventors: Peter Popoff, David H. Hodgkins, Michael D. Clausen, Victor R. Oelschlaegel
  • Patent number: 5972210
    Abstract: In a bypass filter unit, in particular, for filtering supplies of hydraulic oil in a bypass flow, comprising a motor-driven pump and a fixedly mounted filter housing closeable by a cover and containing an exchangeable filter element, it is proposed that the drive of the pump, the pump and the filter housing be arranged coaxially with one another, with the end of the filter housing that is closeable by the cover pointing upwards, that the filter housing be directly connected to the pump, and that the filter housing form a receptacle for the clean oil while the filter element is being changed, so as to enable changing of the filter element and renewal of the filter in a simple way and without risk of soiling the clean oil side.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: October 26, 1999
    Assignee: Argo GmbH Fuer Fluidtechnik
    Inventor: Karlheinz Munkel
  • Patent number: 5958230
    Abstract: A filter for fuel and the like comprising an inner filter element and an outer metal filter can which allows the element and can to work together so that when the filter can is removed from the dispensing apparatus, the filter element springs closed and locks against the filter can so that no fuel is spilled. Additionally, the filter can grasps the filter element and pulls it from the dispensing apparatus.
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: September 28, 1999
    Assignee: Eagle Fitter Corporation
    Inventors: James Pyle, Geoffrey Wilcox
  • Patent number: 5858227
    Abstract: A fuel filter assembly (10) includes a housing (12) with an internal chamber (14) and inlet and outlet (18, 22). The chamber is bounded by an annular wall (16) and has an opening (30) at an upper end thereof. An element (26) is accepted in the chamber. The element includes a manually engagable cap portion (28) for closing the opening, and a disk-shaped member (46). The disk-shaped member has a deformable lip portion (50) for engaging the annular wall, and for fluidly separating an aperture (24) in connection with the outlet fitting, from aperture (24) in connection with the outlet fitting, from an aperture (20) in fluid communication with the inlet fitting. A check valve (200) is also engaged by the lip portion to open a fluid path to the chamber when the filter element is located in the housing. A media body (54) of filter media (56) removes impurities from liquid flowing therethrough. Fuel flows from the inlet to the chamber and then through the media.
    Type: Grant
    Filed: September 18, 1997
    Date of Patent: January 12, 1999
    Assignee: Parker-Hannifin Corporation
    Inventors: Walter H. Stone, Michael D. Clausen
  • Patent number: 5855772
    Abstract: A fuel filter constructed and arranged with a heater and designed for fuel-water separation includes a unitary housing (casting) which has an open top to be closed by a threaded lid and a closed base which in combination with a surrounding sidewall defines an interior space. A fuel filter cartridge including a filter element, centertube, and top and bottom endplates is disposed in the interior space such that there is a water collection space between the bottom endplate and the closed base of the housing. The lid includes a plurality of snap-fit fingers arranged in an annular array for press-on attachment to the top endplate. A heater ring is provided within the housing and is positioned around the filter cartridge. The heater ring provides both a flow path for entering fuel and a plurality of positive-temperature-coefficient stones which assist in the heating of the fuel. Control of the heater ring is provided by a heater connector and thermostat combination.
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: January 5, 1999
    Assignee: Fleetguard, Inc.
    Inventors: Paul D. Miller, Keith Lilly, Bill Hedgecough, A. Caner Demirdogen, Zemin Jiang
  • Patent number: 5833852
    Abstract: A liquid filtering apparatus includes a hollow cylindrical accommodation member having external screw threads at respective ends. Connecting members are disposed at respective ones of those ends, and each connecting member possesses a passage to enable liquid to flow through the accommodation member. Each connecting member is adapted to be connected to a water pipe and is retained on the accommodation member by a respective lid member which is threaded onto a respective end of the accommodation member. A filter disposed inside of the accommodation member is in the form of a cylindrical perforated net and a panel extending across one end of the net to resist radial crushing of the net when the filter is removed and is being cleaned.
    Type: Grant
    Filed: February 19, 1997
    Date of Patent: November 10, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Deok-Joong Yoon
  • Patent number: 5795473
    Abstract: An elongated fluid filtering assembly includes an elongated filter element housed within an elongated hollow tube. The filter and hollow tube are supported on an elevated frame by at least two resilient bushings. The resilient bushings allow easy maintenance of the filter. The hollow tube contains at least one transverse slit which allows fluid to enter the fluid chamber and contact the filter. The filter assembly is easily accessible and relatively inexpensive to maintain.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: August 18, 1998
    Inventor: Donald C. Marks
  • Patent number: 5770065
    Abstract: A fuel filter assembly includes a housing (12) with a removable element (24) mounted therein. The housing has an inlet port (14) in direct fluid communication with a chamber (18). The outlet port (16) is in direct fluid communication with a central standpipe (22). The standpipe has a flow element (42) movable therein for controlling the condition of flow openings (36) in the standpipe. The element includes projections (88) for engaging recesses (90) in a cover (28) to selectively latch the element and cover together. The cover further includes a cover projection (82) for supporting a projection (78) on end cap (60) of the filter element, which opens flow into the standpipe only when the element is installed. When the element is removed, the flow element prevents the introduction of contaminants into the standpipe.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: June 23, 1998
    Assignee: Parker Hannifin Corporation
    Inventors: Peter Popoff, David H. Hodgkins, Michael D. Clausen, Victor R. Oelschlaegel
  • Patent number: 5770066
    Abstract: An improved filter assembly is provided using a bag-type vessel shell and a removable adapter assembly that contains multiple filter cartridges. The invention can be used with both double-open-end filter cartridges and single-open-end filter cartridges. In either case, both ends of the filter cartridges are held in place by individual positioning guides, so as to maintain a perpendicular orientation and seal integrity. In all cases, a knife-edge end seal is provided to be forced into the end surfaces of the filter cartridges. In one embodiment, a compression plate is provided with a single coil spring to force the multiple knife-edge end seals against their respective filter cartridges. In a second embodiment, individual floating end seals are provided at the compression plate to provide good seal integrity regardless of variations in length of the individual filter cartridges.
    Type: Grant
    Filed: November 4, 1996
    Date of Patent: June 23, 1998
    Assignee: Northeast Filter and Equipment Company
    Inventor: Daniel L. Coates
  • Patent number: 5759743
    Abstract: It is an object of the present invention to provide a developer-circulating method and an apparatus for carrying out the method in making a flexographic printing plate which prevents dissolved chemical substance from adversely affecting human bodies and has excellent safety; capable of preventing the increase of the viscosity of developer; and capable of effectively preventing the dissolved chemical substance from adhering to the apparatus, thus preventing the life of the apparatus from being reduced and collecting the dissolved chemical substance in a short period of time and which is superior in operation efficiency, work efficiency, and treating efficiency. Solid content of liquid containing resin component which has eluted from flexographic printing plates 3, 42 and dispersed in developer is flocculated by flocculating agent, and the liquid containing the flocculated solid content is separated into the liquid and solid contents.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: June 2, 1998
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Hisaichi Muramoto, Yasushi Umeda
  • Patent number: 5698097
    Abstract: An oil filter for internal combustion engines is disclosed herein. The filter includes a housing with a bottom arranged below an open top and a screw-on cover threadedly engaged within the open top. The housing includes an inlet duct, a first oil discharge duct in the bottom of the housing, and a second oil discharge duct in the bottom of the housing and coaxially surrounding the first oil discharge duct. A support part is provided within the housing having a first end which is connected to the cover in an axially force-transmitting manner and a second free end inserted into the first oil discharge duct when the cover fully threadedly engaged to the open end of said housing to sealingly close the first discharge duct, and is withdrawn from the discharge duct when the cover is removed from the open end of the housing to enable discharging of oil from the housing via the first oil discharge duct.
    Type: Grant
    Filed: September 13, 1995
    Date of Patent: December 16, 1997
    Assignee: Knecht Filterwerke GmbH
    Inventors: Hans Gebert, Rolf Mohle, Dietmar Sonntag, Elke Bruss, Dietwart Guntert, Hubert Muller
  • Patent number: 5670042
    Abstract: A fuel filter assembly (10) includes a housing (12) with an internal chamber (14) and inlet and outlet (18, 22). The chamber is bounded by an annular wall (16) and has an opening (30) at an upper end thereof. An element (26) is accepted in the chamber. The element includes a manually engagable cap portion (28) for closing the opening, and a disk shaped member (46). The disk shaped member has a deformable lip portion (50) for engaging the annular wall, and for fluidly separating an aperture (24) in connection with the outlet fitting, from an aperture (20) in fluid communication with the inlet fitting. A media body (54) of filter media (56) removes impurities from liquid flowing therethrough. Fuel flows from the inlet to the chamber and then through the media. From an interior area (60) of the media body, the fuel passes through a passage (62) into an intermediate area (52) and out the outlet.
    Type: Grant
    Filed: June 18, 1993
    Date of Patent: September 23, 1997
    Assignee: Parker Hannifin Corporation
    Inventors: Michael D. Clausen, Walter H. Stone
  • Patent number: 5656161
    Abstract: An improved salt basket for dewatering solids, particularly salts resulting from evaporation of industrial wastewaters. The salt basket system includes a pressurizable vessel having a screen floor situated above a bottom liquid collection head, an inlet for the brine/solids slurry from which solids are to be separated and dried, an inlet for air, an inlet for steam (the latter two inlets may be combined, where convenient), an inlet for solids free feed, and a drain outlet (these two may be combined where convenient into a combination feed/drain connection). Preferably, an automated system for introducing feed brine and for removing the solids product is provided. For safety, a pivotally attached lower door has a hydraulic failsafe closure mechanism and locking safety latches to prevent the door from inadvertently opening.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 12, 1997
    Assignee: Ionics, Incorporated
    Inventors: Robert L. Solomon, Ferris C. Standiford, Joseph Bostjancic, Dan Peterson, George R. Jones
  • Patent number: 5643448
    Abstract: A fluid filter cartridge is disclosed herein. The filter cartridge includes a generally tubular casing closed at one end and having at the opposite, open end, an annular member defining a filter element receiving aperture and provided with a single seal extending circumferentially of the casing and projecting axially away from the casing. The filter element includes a base ring and a generally tubular filter screen extending from the base ring to an end closure therefor. The base ring and tubular filter screen are dimensioned to fit within the filter receiving aperture. A removable connection is provided between the annular member and the base ring whereby the filter element is removably retained in the casing after rotation of the filter element about its axis relative to the axis of the casing.
    Type: Grant
    Filed: August 16, 1995
    Date of Patent: July 1, 1997
    Assignee: Glacier Metal Company Limited
    Inventors: Henry Woods Martin, Ian M. Cox, Scott A. Rodibaugh
  • Patent number: 5624418
    Abstract: A collection and separation device for use in combination with a fluid collection container operatively coupled to a suction source to withdraw body fluids and collect tissue specimens from a patient comprising a tissue collection container operatively coupled between the patient and the fluid collection container having at least one tissue collection basket removably disposed therein to receive body fluids and tissue specimens from the patient including a separator to separate the body fluids and tissue specimens and a fluid collection chamber or zone disposed adjacent the separator such that body fluids and tissue specimens from the patient are received in the tissue collection basket where the body fluids and tissue specimens are separated whereby the tissue specimen is retained in the tissue collection basket for subsequent removal from the tissue collection container and the body fluids are collected in the fluid collection chamber or zone for collection and removal to the fluid collection container.
    Type: Grant
    Filed: October 4, 1995
    Date of Patent: April 29, 1997
    Inventor: R. David Shepard
  • Patent number: 5607584
    Abstract: Removable filter cartridge assemblies (10) for housings (28) having a removable member (101, 130) to provide access to the interior (102, 136) of the housing and an inlet (108, 134) and an outlet (109, 135) to and from the interior thereof (102, 136) comprising at least one filter cell (12) through which fluids are passed for filtration, the cell having a central aperture (18) therethrough for the passage of fluid, separate from the fluid within the housing; opposed disks of filtration media (16), spaced apart and defining upper (16U) and lower (16L) surfaces of the cell emanating radially from the central aperture; and, an outer peripheral edge (14) circumscribing the cell; first and second retainer ring members (22) securably disposed on the upper and lower surfaces of said filter cell, open to and concentric with the central aperture, said first retainer ring members being contiguous with the outlet of the housing; and lifting means (42, 50, 80, 90) communicable with one of the retainer ring members for mo
    Type: Grant
    Filed: October 3, 1995
    Date of Patent: March 4, 1997
    Assignee: Cuno Incorporated
    Inventors: Frank Swiatek, Richard Leavitt, deceased, Donald Chanski, Ronald V. Repetti, Drew Willoughby
  • Patent number: 5603829
    Abstract: A device for separating contaminants out of the lube oil of an internal combustion engine is provided which includes a filter element, a centrifuge rotatable by means of the lube oil flowing through it, and at least one supply passage for lube oil to be cleaned and at least one drain passage for the cleaned oil. The filter element and the centrifuge are arranged in a common, closable housing with at least one of the filter element and the centrifuge being removable from the housing when the housing is open. The filter element and the centrifuge are arranged in the housing in vertical alignment and a single cover covers the common housing.
    Type: Grant
    Filed: March 2, 1994
    Date of Patent: February 18, 1997
    Assignee: Ing. Walter Hengst GmbH & Co. KG
    Inventor: Dieter Baumann
  • Patent number: 5601710
    Abstract: A water purifier includes an outer housing, an inner housing disposed in the outer housing, and a filter element disposed in the inner housing. The outer and inner housings have top openings, respectively, each closed by a lid. The inner housing and filter element can be removed as a unit from the outer housing when the lid of the outer housing is removed. The outer and inner housings include interconnected water inlets for admitting unfiltered water, interconnected filtered-water outlets for discharging filtered water, and interconnected unfiltered-water outlets for discharging unfiltered water when the filter element is to be replaced. The filtered-water outlets and unfiltered-water outlets are disposed adjacent the bottom of said outer housing.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: February 11, 1997
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Deok-Joung Yoon, In-Seog Chung
  • Patent number: 5601714
    Abstract: A disposable device for filtration and collection of blood during a surgical operation, which device comprises a housing with a cup-shaped portion, in which a wall section is forming a ledge in the reservoir inside the housing. A first self-supporting filtration element for venuous blood is upstanding from the ledge, and a second filtration element for cardiotomy blood is suspended from the cover, the two elements being arranged side by side in a parallel relationship. The filter elements have an elongate, oval cross-section.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: February 11, 1997
    Assignee: Polystan Holding A/S
    Inventor: Sverre M. Haveland
  • Patent number: 5548893
    Abstract: A modular oil filter is used in an engine with a spin-on type oil inlet port. An adapter is screwed onto the inlet port, and secured thereon by a lock nut. A backflow valve may optionally be secured between the lock nut and the adapter to cover the oil entrance(s) in the adapter. A replaceable oil filter element is coaxially located against a seal shoulder of the lock nut. A housing or canister surrounds the filtration element and releasably secures to the adapter. The filter element may have outwardly extending tabs, an inner or outer diameter releasably connected to a spring coil, or other means to releasably secure the filter element within the canister prior to being placed on the adapter/lock nut.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: August 27, 1996
    Inventor: Douglas F. Koelfgen
  • Patent number: 5545242
    Abstract: An in-line filter includes a filter element sandwiched between two gaskets. A sealing portion is disposed between the gaskets to forming a seal around a periphery of the filter element. The filter can be disposed inside a standard type of tubing connector, and a seal can be formed between the gaskets and opposing sealing surfaces of the tubing connector. The gaskets may directly contact the sealing surfaces of the tubing connector, or sealing members may be disposed between the gaskets and the sealing surfaces.
    Type: Grant
    Filed: July 19, 1994
    Date of Patent: August 13, 1996
    Assignee: Pall Corporation
    Inventors: Michael Whitlock, William Murphy
  • Patent number: 5536405
    Abstract: Membrane disk assemblies include membrane disks which have feed and residue apertures formed through and bounded entirely by a perimetrical edge region of the disk. Preferably, the feed and residue apertures are formed though a fluid-impermeable support rim positioned in the perimetrical edge region of the membrane disk which serves to sealably bond the exterior membrane sheets and at least one interposed permeate carrier sheet one to another. Most preferably, the support rim includes inwardly directed lobes through which the feed and residue apertures are formed. The membrane disks will also include a central permeate aperture in fluid communication with the carrier sheet interposed between the pair of membrane sheets. When a number of such membrane disks are assembled in stacked relationship with the feed, residue and central permeate apertures registered, there will be formed respective feed, residue and permeate passageways through the stack.
    Type: Grant
    Filed: May 11, 1994
    Date of Patent: July 16, 1996
    Assignee: UOP
    Inventors: Roman Myrna, C. Glen Wensley
  • Patent number: 5368753
    Abstract: The invention is an antifreeze reclamation system that is designed for low volume processing over extended time periods. The system makes use of a tank that is preferably fabricated from a standard fifty-five gallon drum. Attached to the top of one end of the tank is a standpipe used for inputting used antifreeze into the system. A second standpipe is located at the top of the opposite end of the tank. The system functions by allowing gravity, buoyancy and time to separate the used antifreeze from entrained and dissolved impurities. The outputted liquid is mixed with new materials to restore it to its original, unused condition.
    Type: Grant
    Filed: June 28, 1993
    Date of Patent: November 29, 1994
    Inventor: Ransen Gardenier, Jr.
  • Patent number: 5336407
    Abstract: In a Fuel Filter arrangement for an internal combustion engine comprising a prefilter and a main filter mounted to the engine by a filter holder, the filter holder has a recess receiving the prefilter, which forms a plug-in unit removably inserted in the recess and position-locked therein.
    Type: Grant
    Filed: July 19, 1993
    Date of Patent: August 9, 1994
    Assignee: Mercedes-Benz AG
    Inventors: Gerd Niemeier, Frank Schneider
  • Patent number: 5290445
    Abstract: The disclosure describes a filtering apparatus and a method for manufacturing a filtering apparatus comprising a housing and a filter arrangement disposed within the housing. The housing may have first and second identical body portions. The filter arrangement, which may include an end cap and a filter element, may be secured within the housing solely by mechanical compression between the first and second body portions.
    Type: Grant
    Filed: June 1, 1993
    Date of Patent: March 1, 1994
    Assignee: Pall Corporation
    Inventor: Roger A. Buttery
  • Patent number: 5269912
    Abstract: A recovery system for precious metal particles in wash solutions includes a pair of filter elements and a pump mounted within a closed tank. The first filter is of relatively large pore size, and traps layer particles. The prefiltered liquid is collected within the tank. A pump is mounted within the tank, and drives the collected liquid and remaining particles through the second filter, which is of a small pore size chosen to trap the remaining particles. After passage through the second filter the wash water may be discarded.
    Type: Grant
    Filed: November 13, 1991
    Date of Patent: December 14, 1993
    Inventor: Peter S. Shor
  • Patent number: 5259956
    Abstract: A tube liquid dispenser includes a resilient tube, a filter positioned in the tube at one end, a flange of sealing material extending radially around the outer circumference of the tube, and an opposite end closed except for a dispensing opening of a size through which liquid passes only upon the application of pressure to the liquid.
    Type: Grant
    Filed: June 2, 1992
    Date of Patent: November 9, 1993
    Assignee: Porex Technologies Corp.
    Inventors: Howard A. Mercer, Michael W. Smith
  • Patent number: 5238717
    Abstract: An end cap for a filter element comprises first and second concentric components of a thermoplastic material. The first of the components forms a side wall and a base of a peripheral groove of the end cap while the second of the components forms a second side of the peripheral groove. The first and second components are connected by a weld extending around the components in the region of the peripheral groove. The weld may be an ultrasonic weld. This prevents distortion of the components at high temperatures by strengthening the composite while allowing use of lightweight inexpensive components that have smooth sealing surfaces with no injection mould parting lines.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: August 24, 1993
    Assignee: Pall Corporation
    Inventor: Michael A. Boylan
  • Patent number: 5236584
    Abstract: A filtration apparatus provides for semiautomatic operation by including a filter element dispenser located at a filtration station. In order to effect removal of a used filter element from the filtration station, a tilting mechanism allows for tilting of a filtration stage which breaks or interrupts a vacuum which is otherwise continuously applied to the filtration station. In operation, the filter dispenser is manually rotated about a support to dispense a filter element in a filtration port at the filtration station. Next, a filtration cup which includes a filtration well is manually rotated about the support and positioned to be seated in the filtration port. After the filtration cup is seated in the filtration port a liquid to be filtered can be dispensed into the filtration well.
    Type: Grant
    Filed: September 6, 1991
    Date of Patent: August 17, 1993
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Roy Repaske, Alan H. Rich, Jimmie L. Slemp
  • Patent number: 5230798
    Abstract: A leaf trap assembly is intended for ready installation in a downspout. The assembly comprises an elongated hollow body with a side wall opening and which attaches at each of its ends to downspout sections. A detachable door which covers the opening and a foraminous receptacle mounted for ready removal from the door are also provided in the assembly. The assembly is convenient to use in that it can be installed in the downspout near ground level. Additionally, separation of the door from the assembly and further separation of the receptacle from the door allows the receptacle to be cleaned in a very efficient manner.
    Type: Grant
    Filed: March 30, 1992
    Date of Patent: July 27, 1993
    Inventor: John T. Rogman
  • Patent number: 5203994
    Abstract: A fuel filter assembly employs a retainer collar for locking the disposable cartridge to the base. The base and the retainer collar are configured with a pair complementary spiral ramp-like structures. The retainer collar is rotatable so that the catches are positioned in slots of the base for locking the cartridge to the base. A spring washer biases the retainer collar into the locked position.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: April 20, 1993
    Assignee: Stanadyne Automotive Corp.
    Inventor: Leon P. Janik
  • Patent number: 5192439
    Abstract: A blood collection reservoir and filter device includes a generally cylindrical housing and an internal filter medium with the filter medium being retained in spaced relationship from the side wall of the housing so that blood can pass through the filter in a non-traumatized manner and flow smoothly onto a dispersion plate for cascading delivery to the internal surface of the side wall of the housing where it can flow in a non-traumatic manner to an outlet in the bottom wall of the housing. The filter medium includes a defoaming filter layer and a particulate filter layer so that blood removed from a surgical wound can be defoamed and filtered within the device. The filter is elevated within the housing to provide a relatively large temporary storage area where blood can be retained in non-contact with the filter.
    Type: Grant
    Filed: February 3, 1992
    Date of Patent: March 9, 1993
    Assignee: Electromedics, Inc.
    Inventors: Gary L. Roth, William D. Zillmann
  • Patent number: 5186829
    Abstract: A key system for a fuel filter assembly employs angularly spaced arcuate protrusions which protrude radially from the cylindrical sidewall of the cartridge. The base has corresponding tracks defined by equidistantly spaced rails which engage with the protrusions to key the cartridge with the base. The key system is employed either apart from or in conjunction with a second axial key/slot system of the base and the cartridge.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: February 16, 1993
    Assignee: Stanadyne Automotive Corp.
    Inventor: Leon P. Janik
  • Patent number: 5176826
    Abstract: A vibrating sieving unit for insertion into a housing to form a sieving filter. The vibrator directly vibrates the sieving cylinder reducing the buildup of filter cake for improved performance. A unique cleaning-in-place system is presented utilizing the fluid being filtered as the purging liquid. An alternate purge construction is also provided for use if the first purge route is blocked.
    Type: Grant
    Filed: October 19, 1990
    Date of Patent: January 5, 1993
    Assignee: Rosedale Products, Inc.
    Inventor: Borje O. Rosaen
  • Patent number: 5141650
    Abstract: A portable pressure screen apparatus is disclosed having a cylindrical shaped pressure housing defining upper and lower hingedly connected halves. The housing includes a slurry inlet aperture raised relative to a filtered slurry discharge port situated at the opposite end of the pressure housing from the slurry inlet aperture. A screen spans the interior of the housing, separating the interior into an upper chamber and a lower chamber. Collected particulate matter from the slurry inlet aperture is accumulated in the upper chamber and slurry filtered through the screen leaves the interior of the housing through the filtered slurry discharge port connected to the lower chamber. A support frame is employed to adjustably support the housing in a generally angled attitude relative to the horizontal.
    Type: Grant
    Filed: April 18, 1991
    Date of Patent: August 25, 1992
    Assignee: County Line Sand & Gravel, Inc.
    Inventors: John D. Cavo, Jack Mize
  • Patent number: 5128032
    Abstract: A vibrating sieving unit for insertion into a housing to form a sieving filter. An air pressure operated vibrator directly vibrates the sieving cylinder to reduce the buildup of filter cake for improved performance. Tuning bars connected between the cover and the vibrator are structurally matched to the fluid being filtered and to the particular vibrating assembly to create a harmonic vibration and to thereby achieve a consistent, maximum vibration at a given, readily maintainable air pressure.
    Type: Grant
    Filed: October 19, 1990
    Date of Patent: July 7, 1992
    Assignee: Rosedale Products, Inc.
    Inventor: Borje O. Rosaen
  • Patent number: 5120438
    Abstract: A liquid purifying device for dispensing a liquid, including a container which has an interior space for storing a liquid, and a lid member for closing the interior space. The liquid is delivered out of the container, due to a pressure of a compressed air which is introduced into the interior space by air pumping means. The air pumping means includes a cylinder member which is reciprocated between an advanced position and a retracted position. The cylinder member is normally biased toward the advanced position, but may be held in the retracted position where appropriate. The lid member of the container has a liquid delivery path through which the liquid is delivered as desired, when a valve disposed in the path is placed in its open position upon pressing of a push-operated member. In the liquid delivery path, there is provided a filter adapted to remove bacteria from the liquid delivered through the path.
    Type: Grant
    Filed: April 17, 1991
    Date of Patent: June 9, 1992
    Assignee: Tomei Sangyo Co., Ltd
    Inventors: Makoto Nakagawa, Masashi Endo
  • Patent number: 5118417
    Abstract: A high-strength disposable tube filter and associated mounting and fluid distribution head assembly with improved fatigue life and higher operating pressure capability. The tubular style filter housing being of a unitary construction utilizes metal tubing rather than the commonly used deep-drawn thin gauge malleable metal can having the closed end of the internal filtering element being the closed structural endcap, or cover, of the housing can. The specification discloses a new state of the art unitary construction method whereas major improvements over prior art will benefit the industry.
    Type: Grant
    Filed: January 25, 1990
    Date of Patent: June 2, 1992
    Inventor: Richard J. Deibel