Rehabilitating Or Regenerating Filter Medium Patents (Class 210/791)
  • Publication number: 20100089838
    Abstract: Floor drain with water trap including an upper screen (19) or lip and a lower screen or threshold (32) extending to a higher level (29) than the lower edge of the upper screen, and that the water first flow below the upper screen and thereafter over the lower screen. The inlet part before the upper screen has a small cross-section or volume in relation to the water volume between the upper and the lower screen securing an efficient flushing away of light pollutions.
    Type: Application
    Filed: March 3, 2008
    Publication date: April 15, 2010
    Inventor: Gert Wilhelm Söderström
  • Patent number: 7691274
    Abstract: A filter installation and method, especially a seawater filter installation and method, includes at least one fluid line (18,20) for transporting a biological fluid, a filter device (54) mounted in the fluid line with at least one filter element (22) in a filter housing (10), and a device for biological decontamination. The device for biological decontamination contains active substances that can be introduced into the filter housing (10), such as inert gases or special metals, ensuring that toxic impurities cannot enter. The active substances used are ecofriendly unlike chemically produced fungicides and herbicides.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: April 6, 2010
    Assignee: Hydac Process Technology GmbH
    Inventors: Ralf Wnuk, Thomas Schneider
  • Patent number: 7686964
    Abstract: The method and an arrangement are for dewatering and washing lime slurry before the dewatered lime mud is passed to a lime mud kiln. The lime slurry is dewatered in a pressurized lime mud filter of disc or drum type. The pressurized lime mud filter is pressurized through a compressor drawing on its suction side (s) gas phase from the filtrate tank and pressurizing on the pressurized side (p) of the compressor the pressure vessel on the lime mud side of the filter. A certain pre-determined amount of gas phase in the gas circulation system is vented and an equivalent pre-determined amount of fresh air is added to the recycled gas phase with the aim of maintaining the partial pressure of oxygen gas above a certain minimum level.
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: March 30, 2010
    Assignee: Metso Fiber Karlstad AB
    Inventor: Patrik Lownertz
  • Publication number: 20100068373
    Abstract: Equipment to extract excess sugar from fruit juice using a centrifuge containing reusable sugar absorbing materials is presented. A method comprising repeatedly performing successive extraction and cleaning cycles on successive portions of juice is also presented. The method's extraction cycle involves extracting the sugar from the juice. The cleaning cycle includes removing the extracted sugar from the sugar absorbing material with hot and cold water, and both cycles include removing all the liquid out of the centrifuge by introducing an inert gas under pressure into the centrifuge at the end of each respective cycle.
    Type: Application
    Filed: September 16, 2008
    Publication date: March 18, 2010
    Inventor: William N. Buchele
  • Patent number: 7678283
    Abstract: A rotary drum filter has a plurality of longitudinally extending division grids mounted about the outer circumference of a drum. A plurality of corrugated sheets are provided, with the leading and trailing edges of each sheet mounted to circumferentially adjacent pairs of division grids to define filtrate compartments. An equivalent number of perforated filter plates are also provided. Each filter plate is attached to the top of a corrugated sheet and has a leading edge and a trailing edge that are set back from the leading edge and trailing edge of the corrugated sheet. A seal clip is positioned near the leading edge of each corrugated sheet. A seal member or seal members is/are held in place by the seal clip and is/are positioned at the face of the leading edge of each corrugated sheet or beneath and near the face or each corrugated sheet.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: March 16, 2010
    Assignee: Andritz Inc.
    Inventors: Todd S. Grace, Joseph A. Gottberg
  • Patent number: 7678284
    Abstract: A filter cloth of long pile fiber bundles is used as a tertiary filter in a wastewater processing method. The filter may be backwashed by a rotating suction head which does not touch the filter cloth. A combination of countercurrent and horizontal flow dislodges entrained solids from the filter cloth. Mounting of the filter media as modular components permits increased capacity within a single tank while avoiding down time in changeover of filter media.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: March 16, 2010
    Assignee: Grouse Mountain, Inc.
    Inventor: Donald D. Ricketts
  • Patent number: 7662296
    Abstract: A filtering and compacting device for solid particles suspended and contained in fluids, such as slurries produced by mechanical operations, comprises a container (11), provided with a cover (12) and an openable bottom (13), and includes an inlet mouth (91) of the fluid to be treated, means for placing the container (11) under pressure, means (20) for opening the bottom (13) of the container (11), in which bottom (13) there is located a first filtering element (90) for retaining the solid particles internally thereof and at least a second filtering element (30) which defines a filtration chamber (31), in which the filtration chamber (31) overlies a compacting chamber (32) of filtered slurry.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: February 16, 2010
    Assignee: P.M.P.O. S.R.L.
    Inventors: Fabio Pancaldi, Vanni Gallocchio
  • Patent number: 7651619
    Abstract: A method and an apparatus for separating dry matter from liquid includes an enclosed separation environment capable of being pressure regulated. Within the enclosed separation environment, a suspension is brought into contact with at least one filter so as to accumulate dry matter on the at least one filter. The filter with the dry matter passes through at least one set of rollers such that liquid is removed from the dry matter on the at least one filter to form a substantially dry filter cake. Thereafter, the substantially dry filter cake is removed from the at least one filter. The above steps are performed in the enclosed separation environment either under vacuum or overpressure. The invention may be used in various fields such as the food industry.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: January 26, 2010
    Inventors: Preben Bøje Hansen, Peter Stubbe, Hanne Birch, Kirsten Grønning Sørensen
  • Publication number: 20100015679
    Abstract: A fermentation system for production of biogas from solid organic material, the system including at least one fermentation reactor. The fermentation reactor includes a vessel (37) for housing a feed mixture having liquid and solid particles and an outlet port (44), a strainer assembly (33) at the outlet port for filtering processed feed mixture from the vessel, and a biogasification reactor (37) in fluid communication with another fermentation reactor, the other fermentation reactor configured to produce a biomethane. The strainer assembly further includes a mixture driving member (53) positioned in the strainer body (47) adjacent the drain opening (51), the mixture driving member having a driving surface configured to receive the liquid passing through the filter member (60). The driving surface engages the filter member such that solid particles are driven from a surface of the filter member when the driving member is activated.
    Type: Application
    Filed: August 1, 2007
    Publication date: January 21, 2010
    Applicant: The Regents of the Univeristy of California
    Inventors: Dave Konwinski, Ruihong Zhang
  • Patent number: 7641804
    Abstract: A filter unit (10) and a filter device formed from several such units for filtering a fluid, especially a process fluid such as required for chip-removing machining processes. The filter units (10) each comprise a frame (11) and a filter medium (16). The frame (11) has support webs (12), which reinforce the frame (11) and support the filter medium (16). The support webs (12) are arranged on the downstream side (18) of the filter medium (16) to prevent clogging on the upstream side (17) and permit a simple removal of the filter cake. The filter units (10) are stacked on each other in alternating orientation such that the upstream sides (17) or the downstream sides (18) of two adjacent individual filter units (10) face each other. The frame (11) forms unfiltered fluid and filtered fluid flow nozzles (13), (14) through which the fluid to be filtered or the filtered fluid can flow.
    Type: Grant
    Filed: August 22, 2007
    Date of Patent: January 5, 2010
    Assignee: Mann + Hummel GmbH
    Inventors: Christian Thalmann, Thomas Rodewaldt, Bernd Burkhart
  • Publication number: 20090321334
    Abstract: A variable wash flow filter assembly includes a wash velocity control cone movable between a minimal position and a maximum position.
    Type: Application
    Filed: June 26, 2008
    Publication date: December 31, 2009
    Inventors: Kevin Gibbons, Francis P. Marocchini, Tomas R. Leutwiler
  • Patent number: 7635435
    Abstract: A method and apparatus for separating immiscible liquids in a dispersion containing an aqueous liquid and at least one dispersed non-aqueous liquid by passing the dispersion through a series of absorbents, preferably polymeric. The direction of the flow through the absorbent is periodically changed. The period required before a change of the flow direction is established by the differential pressure. There is a gradual increase in the differential pressure across the absorbents which indicates a blockage due to viscous oil and/or solids. The product produced by the method and the apparatus of the invention is a polished non-aqueous phase and a polished aqueous phase both having low contaminant levels. In a preferred embodiment when solids are also present in the dispersion, a solids stream is also recovered.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: December 22, 2009
    Assignee: Separatech Canada Inc.
    Inventor: Amine Benachenhou
  • Publication number: 20090308818
    Abstract: A solid separator that uses a rotating screen, having spiral guides at its outer portion, over which a plurality of spiral-shaped scrapers are suspended. An inlet distributor including a plurality of apertures distributes a contaminated liquid flow over the screen, when rotated, permits the scrapers and guides to drive the deposited debris towards an outer edge of the screen and up a slight conical ramp and into a debris discharge sump. A level sensor may be included above the screen to activate the screen rotation based on the level of the contaminated liquid flow above the screen. An alternative embodiment uses individual scraper supports having respective jack mechanisms that permit the operator to independently lift and even rotate each scraper for additional cleaning or service. The alternative embodiment uses an assembly of two screens having an outer portion that also includes a slight conical ramp having spiral guides thereon.
    Type: Application
    Filed: June 4, 2009
    Publication date: December 17, 2009
    Inventor: David A. Laing
  • Patent number: 7632416
    Abstract: A variety of improved hydroclone based fluid filtering systems are described. The hydroclones generally include a tank having an internal chamber and a filter (preferably a surface filter) that is positioned within the internal chamber. The filter defines a filtered fluid chamber within the internal chamber of the tank. The hydroclone may be operated such that a vortex of flowing fluid is formed between the chamber wall and the filter with the filter being located in the center of the vortex. With this arrangement, the filter acts as a cross-flow filter. In one aspect of the invention, the filter is a stepped filter. In another aspect of the invention, the filter is an surface filter, as for example, an electroformed metal surface filter. In some preferred embodiments, the openings in the filter are arranged as slots that extend substantially vertically so that they are oriented substantially perpendicular to the flow path of fluid flowing in the adjacent portion of the vortex.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: December 15, 2009
    Assignee: Clean Filtration Technologies, Inc.
    Inventor: David J. Levitt
  • Publication number: 20090277850
    Abstract: An implantable fluid separator having a housing holding a membrane which allows fluid to pass through. The fluid is drained from the housing and removed from the body.
    Type: Application
    Filed: May 11, 2009
    Publication date: November 12, 2009
    Inventors: Theodore P. Adams, William Jehn Rissmann, Bruce Alan Brillhart, John H. Wang
  • Patent number: 7611634
    Abstract: A method of filtering a fluid wherein after filtering a contaminated fluid, which causes the formation of a filter cake, a substantially non-contaminated fluid is fed through the filter cake and filter at varying flux or at varying driving force. At the same time the necessary driving force or the obtained flux, respectively, are measured. The measured value and the respective value setting are compared with at least one standard set of data and on the basis of this comparison the fouling status of the fluid to be filtered, the filter and the filter cake is determined. The method makes it possible to accurately determine characteristics of a fluid to be filtered. This may be realized by simply varying the flux and measuring the driving force at different flux values, or vice versa.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: November 3, 2009
    Assignee: NORIT Membraan Technologie B.V.
    Inventors: Harry Futselaar, Bastiaan Blankert, Bernardus Henricus Louis Betlem, Matthias Wessling
  • Publication number: 20090255880
    Abstract: A single use, disposable filtration assembly that eliminates the need for disassembly and replacement of fouled filtration modules in a pharmaceutical setting. The single use, disposable filtration assembly is a unitary assembly that is simply positioned and connected within the fluid processing system whereupon the disposable filtration assembly, upon reaching the end of its useable life, is removed from the process as a single, integral unit ready for disposal through appropriate methods.
    Type: Application
    Filed: April 14, 2009
    Publication date: October 15, 2009
    Inventors: Scott J. Pritchard, John V. Fullerton, III
  • Patent number: 7588688
    Abstract: The disclosed principles for providing a chemical-free filtering of particulate down below sub-micron levels, while concentrating the particulate into a sludge. The disclosed principles integrate cross-flow filtration (i.e., micro-filtration or ultra-filtration) with a settling tank (or “weir”) to provide sequential filtration and dewatering of an aqueous media. The disclosed technique operates chemical-free and is continuous. Applications for systems and processes in accordance with the disclosed technique are wide, and include aggregate fines removal, sediment removal, replacement for clarifiers, etc.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: September 15, 2009
    Assignee: Purifics Environmental Technologies, Inc.
    Inventors: Brian E. Butters, Anthony L. Powell
  • Publication number: 20090218298
    Abstract: A strainer system comprises a strainer housing having an inlet for raw fluid and an outlet for strained fluid; a generally cylindrical strainer basket having a strainer screen and disposed within the housing, the external surface of the strainer screen being in flow communication with the raw fluid inlet and the internal surface of the strainer screen being in flow communication with the strained fluid outlet; a backwash collector assembly comprising a backwash conduit having an opening disposed adjacent the outer surface of the strainer screen, the backwash conduit and the strainer basket being moveable relative to each other, so as to allow the opening to pass across the external surface of the strainer screen. A method of straining a fluid, in particular a liquid, is also provided. Finally, a valve assembly for use in the selective opening and closing of a plurality of backwash conduits is disclosed.
    Type: Application
    Filed: November 3, 2006
    Publication date: September 3, 2009
    Inventors: Brent Knox-Holmes, Ian Durdin, Andrew David Jackman
  • Publication number: 20090218299
    Abstract: A static screen used upstream of a membrane assembly within a water treatment system has a screening surface with a number of openings distributed over its area. Liquid flows through the screening surface to reach the membrane assembly. Various shapes of screening surfaces are described including three-dimensional bodies with openings at or near their lower ends. Methods for cleaning the screen are described including aeration, backwashing and lowering down the water level in an upstream section by partially or completely draining a tank. Various treatment systems or process designs incorporating the screen are described. Screen elements may be made in two or more parts comprising a supporting structure and a separation layer and may be mounted on a conduit or pan.
    Type: Application
    Filed: May 4, 2007
    Publication date: September 3, 2009
    Inventors: Pierre Lucien Cote, Jennifer Lynn Pawloski, Michael David Theodoulou, Stanford Chuk-Wah Li, Douglas Joseph Thompson, Ali Adnan
  • Publication number: 20090211990
    Abstract: A filter (20) configured to separate the solid components and the liquid components from a slurry. The filter (20) includes a plurality of filter plate assemblies (46) that cooperate to define a plurality of filter chambers (70), each defining a perimeter (96) having an open section (98) when the filter plates (68) are in a closed position relative to one another. Each filter plate assembly (46) includes a closure (104) configured to close the open section (*). Preferably, the closures (104) are movable to an open position to permit a particulate cake to be removed from the filter chambers (70) without separating the filter plates (68).
    Type: Application
    Filed: March 4, 2005
    Publication date: August 27, 2009
    Inventor: Sean R. Duby
  • Publication number: 20090211992
    Abstract: For providing a water filtration purifying apparatus and a method thereof, enabling to reduce the manufacturing costs of the apparatus as a whole, by combining a function of filtration and a function of separation/concentration, the filtration function and the separation/concentration are separated, in the structure thereof. Thus, since all sewage waters generated in respective filtration separators can be collected by only one (1) set of a magnetic separator, even if there are plural number of the filtration separators, it is possible to dissolve a problem of rising up the costs of the apparatus, as a whole. With this, it is possible to provide a water filtration purifying apparatus, for enabling high water-quality purification and also reducing low manufacturing costs thereof, by further small-sizing the magnetic separating portion.
    Type: Application
    Filed: April 13, 2005
    Publication date: August 27, 2009
    Inventors: Norihide Saho, Hisashi Isogami, Takashi Mizumori, Tetsuya Tanaka
  • Patent number: 7563375
    Abstract: A method of cleaning a fouled RO membrane in a module for RO separation, the membrane having feed side and permeate side, the foulant accumulating at the feed side. The cleaning method comprises: feeding concentrated saline solution to the feed side of the RO membrane under the high gauge pressure of the normal RO separation process; feeding dilute saline solution to the permeate side of the RO membrane under higher pressure than the permeate pressure of the normal RO process, so that a net driving differential ?PN is directed to the feed side, whereby the solvent is being sucked from the permeate side to the feed side, penetrates into the interface between the membrane and the accumulated foulant, and separates the foulant from the membrane surface; and withdrawing the concentrated saline solution together with the separated foulant and the penetrated solvent from the feed side of the RO membrane.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: July 21, 2009
    Assignee: I.D.E. Technologies Ltd.
    Inventor: Boris Liberman
  • Publication number: 20090178982
    Abstract: An improved cleaning apparatus and method is provided for cartridge filters in a fluid bed processor. A cleaning solution duct is coupled to the air pulse tube so as to supply a mixture of pressurized air and cleaning liquid to the inside of the filter cartridge. The pressure forces the cleaning solution and air outwardly through the filter cloth to remove particles from the interstitial pores of the cloth. The cleaning liquid also flushes the interior and the exterior surface of the cloth. The lower end of the filter includes a cap which is normally closed, and which can be opened to allow drainage of cleaning liquid from the interior of the cartridge filter.
    Type: Application
    Filed: January 11, 2008
    Publication date: July 16, 2009
    Inventor: AARON K. BASTEN
  • Publication number: 20090178976
    Abstract: An apparatus for filtering liquid that includes a filter having an external surface; a rotatable shaft extending through the filter; and a movable member coupled to the rotatable shaft. The movable member is configured to impart a suction force at various locations across the external surface of the filter. The movable member has a trailing portion that extends further than the leading portion in the direction toward the filter.
    Type: Application
    Filed: October 17, 2007
    Publication date: July 16, 2009
    Inventor: Jay Stevens
  • Patent number: 7553425
    Abstract: A skimming screen for a swimming pool filtration system is disclosed. The skimming according to the invention includes a support frame having a central opening and a mesh fabric or screen material attached to the support frame so as to extend over substantially the entire area of the central opening. The support frame and the screen material are shaped and dimensioned to cover the intake orifice of the suction line when a strainer basket is removed for cleaning. A method of using the skimming screen to facilitate cleaning of the strainer basket is also disclosed.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: June 30, 2009
    Inventors: Samuel B. Stern, Margaret Quarry
  • Publication number: 20090095041
    Abstract: A method of disposing of waste material in a waste stream, including positioning a porous foamed glass member characterized by an open-cell interconnected pore network in contact with a volume of liquid to be purified and removing an amount of an undesired material from the volume of liquid.
    Type: Application
    Filed: October 16, 2007
    Publication date: April 16, 2009
    Inventors: W. Gene Ramsey, Andrew Ungerleider
  • Patent number: 7517376
    Abstract: An air supply system and valve is disclosed which provides a reverse pulse of air for cleaning a filter element located in a filter house. A valve is also disclosed for use in the air supply system. The system includes a pressure vessel adapted to contain a volume of compressed air to be used for supplying the reverse pulse, the pressure vessel having a wall with at least one outlet aperture therein. The valve is mounted to the wall around the aperture to control the flow of air from the pressure vessel, the valve means comprising a valve body having an inlet, an outlet and a flow passage connecting the inlet and outlet, the inlet, the outlet and the flow passage generally extending axially through the valve body, a valve seat surrounding the flow passage, and a valve closure member movable towards and away from the valve seat into closed and open positions to thereby close or open the flow passage, and operating means for moving the valve closure member between the closed and open positions.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: April 14, 2009
    Assignee: Goyen Controls Co. Pty. Ltd.
    Inventor: Andrew John McCausland
  • Publication number: 20090071912
    Abstract: [PROBLEMS] To provide a device and a method for automatically removing lint without requiring special skill and labor by improving a lint removal technique in a continuous washing machine. [MEANS FOR SOLVING PROBLEMS] An opening (2a) is formed in a washing liquid feed tube (2), and a guide vane (6) is fixed to the feed tube along the opening (2a). A cylindrical screen (3) is fitted onto the feed tube rotatably about the feed tube (2), and rotatingly driven by rotating drive rollers (7a) and (7b). A washing liquid flowing out of the opening (2a) is passed through the side wall (3a) of the cylindrical screen (3), filtrated to separate the lint from the washing liquid, and recirculated from a collecting tube (5) to the continuous washing machine.
    Type: Application
    Filed: May 22, 2006
    Publication date: March 19, 2009
    Inventors: Takashi Mishina, Yasunori Atsumi, Harutoshi Shimoyama, Yuichi Kanoh
  • Publication number: 20090071913
    Abstract: A cleaning device for cleaning lubricating oil which circulates in a lubricating oil circuit has an intake to be connected with the lubricating oil circuit, through which a part quantity of the lubricating oil circulating in the lubricating oil circuit is to be fed to the cleaning and a return to be connected with the lubricating oil circuit for the returning of the cleaned lubricating oil into the lubricating oil circuit.
    Type: Application
    Filed: September 16, 2008
    Publication date: March 19, 2009
    Applicant: MAN Diesel SE
    Inventors: Nikolaus Konig, Michael Forster
  • Patent number: 7494809
    Abstract: A method for automated cell enrichment preparation where biological cells are injected into a first subchamber and flowed through the first subchamber, through a large pore filter and into a second subchamber so that the large pore filter retains particles large particles in the first subchamber, while the biological cells pass through the first filter into the second subchamber and are retained by a small pore filter. After clearing, the biological cells are stained. A solvent exchange leaves the biological cells in solvent and they are released into a concentration module where a portion of the solvent is removed to form an enriched concentrated cell suspension.
    Type: Grant
    Filed: February 14, 2006
    Date of Patent: February 24, 2009
    Assignee: VisionGate, Inc.
    Inventors: Alan C. Nelson, Florence W. Patten
  • Publication number: 20090045149
    Abstract: An apparatus, system, and method for removing sediment from water is disclosed. According to one embodiment of the present invention, the apparatus includes a tubular filter assembly comprising a support member; and a filtratable element surrounding the support member, the filtratable element comprising a backing mesh; and a fibrous batting. A system for removing sediment from water is disclosed. According to one embodiment, the system includes a filter chamber to receive a liquid having suspended particles therein; at least one filtration cartridge housed within the filter chamber, wherein the filtration cartridge comprises at least one elongated filtratable element, each filtratable element comprising a support member, and a filtratable media adapted to surround the inner core. A method for removing sediment from water is disclosed.
    Type: Application
    Filed: August 15, 2007
    Publication date: February 19, 2009
    Inventors: Christopher Adam Murray, Darren Francis Kevin Lawless
  • Patent number: 7491338
    Abstract: The present invention relates to an apparatus and method, using the apparatus, for blocking the passage of solid materials into or through a channel while permitting the passage of fluid; automatically releasing the blocked solid materials under predetermined conditions when priority is given to maximizing the passage of fluid; automatically re-closing after the accumulated solid materials have passed downstream, and resuming the blocking of solid materials; and, repeating the process upon recurrence of the predetermined conditions. Although the invention relates to street storm-water drainage channels, particularly inlets to catch basins, it can be applied to any fluid-flow channel where blocking the passage of solid materials is important but where there are conditions under which priority should be shifted from blocking the solid materials to releasing them downstream.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: February 17, 2009
    Inventor: Khalil Ibrahim Nino
  • Publication number: 20090039037
    Abstract: A portable water disinfecting and purification apparatus comprising a first chamber into which water to be purified may be drawn by suction or negative pressure, a second chamber into which the water from the first chamber can be forced by a pumping action or positive pressure, whereby the water is passed across a micro-filter positioned within a section of the second chamber through which water can be forced by said pumping action to an outlet for purified water.
    Type: Application
    Filed: August 8, 2008
    Publication date: February 12, 2009
    Inventors: Paul W. O'Brien, Mogens Engel
  • Patent number: 7485163
    Abstract: There are provided a nozzle capable of enhancing the straight-advancing capability of jetted fluid to increase the back wash effect of a filter member, and a filter-type dust collector capable of effectively carrying out dust removal from a filter member with such a nozzle. To this end, the nozzle has a Laval nozzle section secured to the inside of an outer tube at its proximal end and a fluid guide section disposed at the leading end of the outer tube. The fluid guide section has a plurality of suction holes elongated in the flowing direction of the pressurized fluid. This nozzle is mounted on a pulse header tube of a dust removal device.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: February 3, 2009
    Assignee: Takuma Co., Ltd.
    Inventor: Satoshi Yoshimoto
  • Publication number: 20090026152
    Abstract: The disclosed modular filter may include a filter medium and an external frame structure. The filter medium may form a chamber having a front side, a back side, and a periphery. The filter medium may also have a plurality of fibers. The external frame structure has at least one aperture mounted on at least one of the front side and back side of the chamber in which the external frame structure has a thickness greater than the lengths of the plurality of fibers.
    Type: Application
    Filed: June 19, 2008
    Publication date: January 29, 2009
    Inventors: Tony COLLINS, Brett Boyd, Bill Mattfeld
  • Patent number: 7476322
    Abstract: A membrane filtration system comprising one or more submerged ultrafiltration or microfiltration membrane assemblies at ambient pressure, with mixed liquor is discharged underneath each membrane assembly. In a sequenced batch reactor system, a coarse bubble air diffuser for scouring each membrane assembly is supplied with air only during the backwash cycle of the filtration system and not during the filtration cycle. In a membrane bioreactor system, the biological treatment section is physically separated from the filtration section and fine bubble air diffusion is used in the biological treatment section.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: January 13, 2009
    Assignee: ITT Manufacturing Enterprises, Inc.
    Inventors: Michael A. Dimitriou, Joseph G. Krall, David Rice, Velupillai Yogendran, Roger J. Byrne, Kenneth P. George, John E. Koch, III
  • Publication number: 20090008343
    Abstract: A water filtration system (60, FIG. 2) wherein pressured feed water (water with impurities to be filtered out) passes downstream from an upstream end of a passage (66) through a filter arrangement (74) in the passage, to a filtrate storage region (82), during filtrate production. Pressured water, such as at 50 psi (3 bars) from a tap water source (110), provides the pressured feed water during filtrate production, and also pressurizes the filtrate during backflushing. A filtrate pressurizing apparatus (90) includes a movable member or piston (92) that lies in a chamber (94), and that has a feed side (134) that is pressurized by tap water during a backflush and that has a filtrate side (132) that presses against filtrate, the feed side having a larger diameter (D2) than the filtrate side (D1) to produce an increased pressure during backflushing.
    Type: Application
    Filed: July 1, 2008
    Publication date: January 8, 2009
    Inventor: Jason D. Gilmour
  • Patent number: 7473356
    Abstract: An object of the invention is to provide a wastewater treatment system using a superconducting magnetic separator that can wash the magnetic filter efficiently. The system comprises in a bore of a superconducting magnet a removably built-up multiunit magnetic filter consisting of a plurality of single-unit magnetic filters. The multiunit magnetic filter has a total longitudinal length at least equal or greater than that of the superconducting magnet. During excitation of the superconducting magnet, a single-unit magnetic filter is removed from the upstream side (sewage side) of the multiunit magnetic filter by pushing in another single-unit magnetic filter from the downstream side (clean water side), and washed and returned to the downstream side again.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: January 6, 2009
    Assignees: Niki Glass Co., Ltd, Tatsumi Air Engineering, Ltd, Futaba Shoj, Co., Ltd
    Inventors: Takefumi Niki, Yasuhiro Noda, Tatsuo Fukunishi
  • Patent number: 7473375
    Abstract: The residual material in a filter-dryer (1) is removed from the screen (15) by careful scraping with a lasso like belt (20). The scraped material will be removed through a side opening (16). To gain this remaining material adds to the yield of the process by reducing loss of product, and does not endanger personnel unnecessarily and therefore save process costs.
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: January 6, 2009
    Assignee: Rosenmund VTA AG
    Inventor: Robert Gerard Stoerzer
  • Publication number: 20080315441
    Abstract: An oxygen generator including: a humidifier tank moves up and down according to a horizontal movement of an adjustment knob so that the humidifier tank can be readily detachable, and thus a user can securely and conveniently use the oxygen generator without any water leakage from the humidifier tank during an operation of the oxygen generator. Also, it is possible to reduce noise according to driving of a compressor, noise according to the nitrogen exhaustion, and noise according to driving of a fan portion when the oxygen generator operates, to display purity information about the discharged oxygen, sensed by an oxygen sensor, as a digitalized numerical value on a display portion so that a user may readily recognize a current oxygen purity, and to drive the compressor at a low power consumption based on a discharge flow rate of oxygen and thereby reduce the power consumption.
    Type: Application
    Filed: September 7, 2007
    Publication date: December 25, 2008
    Applicant: Oxus Co., Ltd. (Status: Corporation)
    Inventors: Tae Soo Lee, Yoon Sun Choi, Yong Duck Kim
  • Patent number: 7468082
    Abstract: A self cleaning gas filtration system for filtering contaminants from a flow of gas. A filter element is disposed within a housing and configured to receive a first flow of gas from an inlet in the housing. A pressurized gas source is fluidly coupled to at least one tube having a plurality of perforations. The perforations are configured to backflush the filter with a second flow of gas from the gas source. An outlet is configured to receive at least a portion of the second flow of gas.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: December 23, 2008
    Inventor: Robert R. Gordon
  • Publication number: 20080308494
    Abstract: A sampling apparatus and method for sampling is provided that achieves automatic, aseptic, extractive sampling of fluid samples from fluid sources containing high solids and/or high viscosity fluid without failing due to adverse interactions between the fluid and the sampling device such as clogging or fouling due to mechanical means or to physicochemical reactions between the fluid and the materials of construction of the sample device.
    Type: Application
    Filed: May 29, 2008
    Publication date: December 18, 2008
    Inventor: George E. Barringer, JR.
  • Publication number: 20080308501
    Abstract: A liquid/solid separator system mounted on a mobile cart and connected to a process tank for reducing the rate at which fluids are consumed in manufacturing processes. The system may include automation and also may include a shear-stepped screen including tilted wire wedge wires arranged at varying cant angles. The system may include a fine screen basket received in a settling box.
    Type: Application
    Filed: August 15, 2008
    Publication date: December 18, 2008
    Inventor: William O. Irvine
  • Patent number: 7465391
    Abstract: An apparatus for separating solid matter from a liquid stream, where the apparatus includes a generally cylindrical separation panel surrounding an interior space, which is oriented so as to have a substantially vertical longitudinal axis. The separation panel has a plurality of vertically and horizontally spaced openings which are adapted to remove solid material larger than a predetermined size from liquid passing through the separation panel. The apparatus also includes a chamber surrounding the separation panel and providing a chamber portion into which the liquid passes after passing through the separation panel. The apparatus may further include an inlet positioned below the separation panel, through which the liquid stream is delivered from a bottom opening of the separation panel to the interior space and which is arranged such that the liquid circulates about the axis so as to pass the separation panel, and an outlet extending from the chamber portion.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: December 16, 2008
    Assignee: CDS Technologies, Inc.
    Inventors: James A. Heist, Alex Davey, David Ziegler
  • Publication number: 20080296236
    Abstract: A filter system and associated methods of filtering utilize a combination of ultrasonically enhanced backwashing and a modified filter media configurations for increasing the specific loading on a portion of the filter media, thereby tending to increase the total particulate holding capacity of the improved filter. Depending on factors such as the filter configuration, the particulate size distribution and the differential pressure that can be maintained across the filter, it is expected that the particulate holding capacity can be more than doubled relative to a conventional filter having similarly configured filter media.
    Type: Application
    Filed: May 30, 2008
    Publication date: December 4, 2008
    Inventors: David J. GROSS, David Arguelles
  • Patent number: 7459092
    Abstract: A method and apparatus for separating particles and dissolved matter from a fluid stream incorporated in an aircraft rinse system. The present invention includes a first pressure source which transports collected rinse fluid into a separator annulus with a filter element disposed therein. The untreated fluid is placed under appropriate pressure sufficient to produce turbulent flow, increased particle kinetics and/or cavitation physics allowing the desired fluid to penetrate and pass into and through the filter media. The filtered fluid is then transported to a collection tank. The contaminant particulate matter retained on the exterior of the filter media may be removed by the instantenous reverse pressurization of the separator annulus by a second pressure source thereby removing the contaminant particles away from contact with the filter media, and which may then be transported to a waste collection tank or a concentrator for further treatment.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: December 2, 2008
    Assignee: LJC Technologies, L.L.C.
    Inventors: Raymond Ford Johnson, Markley Dean Johnson, Rodney Grage
  • Patent number: 7459091
    Abstract: The present invention discloses a method and apparatus for separating particles and dissolved matter from a fluid stream. Specifically, the present invention includes a first pressure source which transports untreated fluid into a separator annulus with a filter element disposed therein. The untreated fluid is placed under appropriate pressure sufficient to produce turbulent flow, increased particle kinetics and/or cavitation physics allowing the desired fluid to penetrate and pass into and through the filter media. The filtered fluid is then transported to a collection tank. The contaminant particulate matter retained by the filter media may be removed by the instantenous reverse pressurization of the separator annulus by a second pressure source thereby removing the contaminant particles away from contact with the filter media, and which may then be transported to a waste collection tank or a concentrator for further treatment.
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: December 2, 2008
    Assignee: LJC Technologies, L.L.C.
    Inventors: Raymond Ford Johnson, Markley Dean Johnson, Rodney Grage
  • Patent number: 7455784
    Abstract: A liquid/solid separator system mounted on a mobile cart and connected to a process tank for reducing the rate at which fluids are consumed in manufacturing processes. The system may include automation and also may include a shear-stepped screen including tilted wire wedge wires arranged at varying cant angles. The system may include a fine screen basket received in a settling box.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: November 25, 2008
    Inventor: William O. Irvine
  • Patent number: 7449117
    Abstract: A filtration unit that includes a casing that has a closed bottom and is immersed in a water storage tank (or water storage pond) into which raw water is introduced, the casing being composed of a introduction port which introduces the raw water in the water storage tank into the casing, an active carbon supply device which adds active carbon to the introduced raw water, an agitator which agitates the raw water inside the casing to which active carbon has been added, a filtration module which filters the raw water, a back flow preventing device which prevents the raw water inside the casing from flowing back into the introduction port and being discharged into the water storage tank, and a discharging device which discharges the raw water from the casing.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: November 11, 2008
    Assignee: Tsukishima Kikai Co., Ltd.
    Inventor: Tsuyoshi Nakayama