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| Number | Title | Issue Date |
| 7399419 | Modular filtration system A filter system includes a set of modules, each module including screen assemblies and filter media sandwiched between the screen assemblies. A plurality of control assemblies are associated with each of the modules. Each of the control assemblies is in fluid commun... | 07/15/2008 |
| 7396472 | Filter plate assembly for filter A filter configured to separate the solid components and the liquid components from a slurry. The filter includes a plurality of filter plate assemblies that cooperate to define a plurality of filter chambers, each defining a perimeter having an open section when th... | 07/08/2008 |
| 7396462 | Filtering device A filtering device includes: a fluid-collecting tube; a plurality of positioning trays sleeved around the fluid-collecting tube and stacked one above the other; and a plurality of membranes alternating with the positioning trays. Each of the membranes is sandwiched ... | 07/08/2008 |
| 7381335 | Method and arrangement for continuous filtering of particles out of a liquid Method and arrangement for continuous filtering of particles out of a contaminated liquid by means of a number of separate filtering units (14) in order continuously to feed purified liquid to a consumer. Each filtering unit (14) comprises a rotatable,... | 06/03/2008 |
| 7332081 | Filter device for the clarification of contaminated liquids A filter device for the clarification of contaminated liquids includes a vessel configured to contain the liquid to be clarified. A first carrying disk is arranged within the vessel and is rotationally driven about a rotational axis. Mounting rods are attached to an... | 02/19/2008 |
| 7326335 | Apparatus for removing solids from water in canal There is disclosed an apparatus for removing solids from water in a canal during or immediately after a rainstorm. The apparatus includes a plurality of filters and a carrier. The filters filter the solids from the water while moving in and taking impact from the wa... | 02/05/2008 |
| 7309366 | Bag cleaning compressed air nozzle A process and apparatus for cleaning filter cake from the interior of a baghouse bag. A nozzle through which compressed gas flows is positioned on the interior of a bag such that gas is directed to, and thereby disrupts, the filter cake. The compressed gas flows in ... | 12/18/2007 |
| 7288186 | Filtrate immersed activation assembly for disk filters A self cleaning filtration device wherein an activation piston, laterally supported within an activation cylinder is immersed in filtrate within the confines of an immersion chamber. The immersion chamber receives filtrate from a disk filtration stack via orifices a... | 10/30/2007 |
| 7241383 | Fluid treating method and apparatus A fluid treatment method includes the steps of forming a ring lamination by laminating a plurality of filtering rings with contact surfaces facing each other in a laminating direction; providing at least portions of the filtering rings with a contact surface roughne... | 07/10/2007 |
| 7229562 | Integrated dual cross flow filtration and ultrasonic transducer assembly A filtration system comprising a filter cassette having integrated ultrasonic transducers incorporated therein, and a method for using the same. The integrated system of filters and transducers can be hardened for use in hazardous environments, and is particularly s... | 06/12/2007 |
| 7229527 | Method for the controlled thickening of low consistency fiber suspensions The present invention relates to the thickening of pulp suspensions. A low consistency pulp suspension is fed to a pre-thickener (10) through an inlet conduit (18). A layer of thickened pulp, formed on a filter surface (22), is pushed along the ... | 06/12/2007 |
| 7192528 | Self-cleaning filter apparatus A self-cleaning filter system is disclosed that includes an inlet fitting that is adapted to be inserted into an existing filter body. A spray tube having a plurality of outlets that slideably engages the inlet fitting, is positioned in the ring discs of the existin... | 03/20/2007 |
| 7182868 | Device for filtering fluid substances, used for a meat materials injecting machine An apparatus for filtering fluid substances is used with a machine for injecting meat products. The device comprises a container (4) comprising filter units (3a, 3b) communicated independently with a suction outlet (6) throu... | 02/27/2007 |
| 7169303 | Sorbent reactor for extracorporeal blood treatment systems, peritoneal dialysis systems, and other body fluid treatment systems Systems and methods for extracorporeal processing of blood or other body fluid for the treatment of conditions, such as sepsis, autoimmune disease, or toxemia related to kidney failure, liver failure, or drug overdose are provided. In an extracorporeal treatment sys... | 01/30/2007 |
| 7083735 | High debris content strainer A high debris content strainer that utilizes a cylindrically-shaped screen having four removal assemblies positioned evenly around the screen periphery. Each removal assembly includes a backwash spray bar on the downstream side of the screen and a scraper/brush and ... | 08/01/2006 |
| 7037427 | Filter device for clarifying contaminated liquids A filter device for the clarification of contaminated liquids includes a plurality of disk-shaped filter elements spaced apart from one another and combined into circular or polygonal filter modules. The filter elements are arranged rotatably about a horizontal axis... | 05/02/2006 |
| 7005067 | Disc-type filtration apparatus including discharge collector internal to pressure vessel and method filtration A positive pressure disc-type filtration apparatus including a collection trough internal to the cylindrical pressure vessel housing the filter discs. The collection trough is entirely disposed within the cylinder of the pressure vessel and configured and located to... | 02/28/2006 |
| 6984313 | Filtration and purification system and method therefor An automatic water filtration and purification system will allow a continuous water flow to downstream fixtures while simultaneously and automatically regularly flushing and cleaning in-path filter media. The automatic water filtration and purification system has at... | 01/10/2006 |
| 6977040 | Integrated filter housing with associated cleaning system and method A multiround filter housing apparatus, cleaning system and method are provided. A filter housing having an integrated base that includes an integral cartridge plate, a plurality of cartridge filter bores, an inlet manifold and an outlet manifold is presented. The up... | 12/20/2005 |
| 6958118 | Self-cleaning water filtration system and method A self-cleaning water filtration system includes a pre-filter to filter oils and relatively medium sized particles in a water flow, a multi-stage filter to purify and provide a second level of filtration to the water flow, and a self-cleaning filter to provide a thi... | 10/25/2005 |
| 6872310 | Precoated filter for the filtration of flowing media In a particularly noise-free and vibration-free operating precoated filter for filtering for example cooling lubricating flowing media, a filter candle surrounding a riser channel is mounted by means of a riser tube in a separating plate in an axially moveable manne... | 03/29/2005 |
| 6858140 | Processes and devices for water and wastewater treatment, including stationary cloth media filtration The present invention relates to stationary cloth media filtration systems and devices, as well as processes and devices for uniform flow distribution and improved cloth media filter backwashing. ... | 02/22/2005 |
| 6833071 | Displacement filter apparatus A method and apparatus for filtering a slurry utilizing a displacement filtering principle. The filter apparatus desirably includes an inner filter and an outer filter. Both the inner and outer filters are preferably substantially annular in shape and positioned con... | 12/21/2004 |
| 6833077 | Sequential swinging precoat removal and renewal system, filter so equipped and method A precoat renewal system for a filter, such as a disc filter. The renewal system includes a plurality of nozzles coupled to spray piping and valving with each nozzle being positioned for spraying an area of one side of a disc. The nozzles and at least a portion of t... | 12/21/2004 |
| 6709599 | Waste water treatment system with slip stream A method and apparatus for processing waste streams wherein a slipstream is formed on the upstream side of an ultrafiltration membrane (120) to carry collected and concentrated filter reject to a microfilter (170) via a slipstream through a conduit ( | 03/23/2004 |
| 6627082 | System and method for withdrawing permeate through a filter and for cleaning the filter in situ A system is provided for withdrawing permeate from a substrate. The exemplary system includes a vessel configured to contain substrate, two or more compartments configured to receive substrate from the vessel and to return a portion of received substrate ... | 09/30/2003 |
| 6558545 | System for cross-flow permeation by means of a membrane The invention encompasses a system for the cross flow filtration of fluid media using membranes. The system has in a first embodiment two shafts, only one of which is hollow, with each shaft running through an axis of its given disc. The disc of each shaf... | 05/06/2003 |
| 6537449 | Liquid filter using filtration aid A liquid filter is provided of the type having a filter container with an inlet through the side of the container towards the lower end thereof, an outlet from the container, and a filter medium interposed between the inlet and outlet. The filter is adapt... | 03/25/2003 |
| 6521124 | Reverse osmosis liquid filter system with ultraviolet filtration The present invention provides a multi-element filtering system assuring serial filtration of a liquid through multiple filter cartridges while enabling flushing without requiring removal of the filter cartridges. Both conventional and reverse osmosis fil... | 02/18/2003 |
| 6508943 | Filtering device and a filtering method The present invention refers to a filtering device comprising at least one filtering membrane, at least one counter surface opposite to the filtering membrane, and at least one gap-shaped liquid space formed between the filtering membrane and the counter ... | 01/21/2003 |
| 6461503 | Interengaged rotary disc filters There is provided an apparatus for the filtration of fluid media, in particular for the pre-screening of media, that has a primary pack of hollow discs, which are arranged parallel to each other at regular distances to each other, the walls of which are m... | 10/08/2002 |
| 6439273 | Method and apparatus for cleaning filter candles in a candle filter A method and apparatus for cleaning candles in a candle filter using a cleaning fluid that flows inside the candle from the side of the filtrate, whereby said fluid is pressed in an opposite direction to the direction of the filtrate from the inside to th... | 08/27/2002 |
| 6423223 | Multi-element, reverse osmosis, liquid filter system with flushing and filtering circuits The present invention provides a multi-element filtering system assuring serial filtration of a liquid through multiple filter cartridges while enabling flushing without requiring removal of the filter cartridges. Both conventional and reverse osmosis fil... | 07/23/2002 |
| 6419842 | Method and installation for separating solids contents from a pulp For separating solids contents from a pulp, the pulp is concentrated in a filter device by intense movement up to a predetermined solid matter content. In the filter device, the dynamic pressure and Venturi effects are utilized to support the filtering pr... | 07/16/2002 |
| 6419835 | Method for producing a filter cake The invention relates to a method for producing a solids cake created in filtering performed by a suction drier provided with a fine porous liquid suction surface, in which method there is created, in order to produce said solids cake, a pressure differen... | 07/16/2002 |
| 6416666 | Simplified filtration system A filtration apparatus includes a container (24) that surrounds at least one rapidly rotating membrane pack (32, FIG. 2) and stationary turbulators (36A, 36B ) slightly spaced from the membrane pack surfaces to leave thin gaps (40A, 40B ) between them, wh... | 07/09/2002 |
| 6365054 | Plant for filling containers and a method for operating a plant for filling containers A method of operating a plant for filling containers by moving a liquid such as water through an apparatus with at least one portion for receiving the liquid before it is filtered and at least one portion for receiving the liquid after it is filtered, so ... | 04/02/2002 |
| 6332977 | Apparatus for steam sterilizing and recycling leaf-filter aids Steaming filter aid cakes in-place in a pressure leaf filter is a simple, inexpensive, and reliable technique for insuring that all collected pathogens are destroyed and never released back into the environment. Filter aids including diatomaceous earth re... | 12/25/2001 |
| 6284136 | Apparatus for cleaning a filter surface The invention relates to a method and apparatus for cleaning the filter surface (2, 3) of a filter medium in a suction drier. According to the invention, in order to mark the surface to be cleaned, in contact with the surface to be cleaned there is set a ... | 09/04/2001 |
| 6284135 | Membrane filter apparatus with gas discharge cleaning means A membrane filter apparatus includes a membrane unit 50 composed of an array of membrane elements 51 disposed within a treatment tank 31. A skirt element 71 is disposed at a bottom portion of the membrane unit and an aerator 61 is disposed under the skirt... | 09/04/2001 |
