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| Number | Title | Issue Date |
| 7396464 | Filter comprising rotatable, disk-shaped filter elements The invention concerns a device for the separation of substances, in particular of solid substances, liquid phases of varied density and/or of gases, from a liquid, by rotation with several filtering elements, which permit the filtered liquid to pass through and whi... | 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 |
| 7314556 | Filter disc with panel sectors A panel sector, for a disc filter for separation of liquids from a suspension, includes front and back filter panel assemblies, a sector assembly for mounting the front and back filter panel assemblies, and a top cap for retaining the filter panel assemblies within ... | 01/01/2008 |
| 7297269 | Cross-flow filtration cassettes and methods for fabrication of same This invention relates generally to filtration cassettes, and, more particularly to methods of fabricating cross-flow filtration cassettes. Cassettes of the invention are characterized, in part, by a series of sealing channels which selectively seal the filtrate and... | 11/20/2007 |
| 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 |
| 7220353 | Skimmer with rotatable filter cartridge for spas and pools A pool/spa skimmer includes a housing, a face plate, and a flexible weir gate. The housing and plate are dimensioned to allow water to flow in a vertical column. The interior of the housing has a curved wall so that when a column of water passes through the open gat... | 05/22/2007 |
| 7166229 | Method and apparatus for extracting liquid present in a humid mass A system for extracting a liquid by pressing a humid mass, the system including at least one extraction channel, while extraction channel being provided with at least one inlet allowing to feed the extraction channel with the humid mass to be treated; with walls pro... | 01/23/2007 |
| 7163622 | Filter The invention refers to a filter 1 with several rotating filter discs 3 mounted on a shaft 2 and which are provided with a porous filter medium. It is characterized by elastomer elements (8, 8′) being mounted on the shaft (2) as ... | 01/16/2007 |
| 7160446 | Portable spa filter housing with flow splitter A filter housing for a portable spa utilizes a coaxial channel structure at the flow output of the filter housing to separate the water flow from the filter housing. In one embodiment, the water from the filter housing, exiting at the bottom of the housing, is piped... | 01/09/2007 |
| 7153425 | Process and filter for filtering a slurry The present invention comprises a process for filtering a slurry and a filter cartridge construction for filtering a slurry having a filtration medium formed of a depth filter such as a cylindrical seamless fibrous depth filter comprising a nonwoven fibrous mass, wo... | 12/26/2006 |
| 7105090 | Backflushing filter A filter has three filter elements, e.g., screens, for trapping particulate material while allowing passage of a fluid. The second sides of each of the first and second screens are connected to an intermediate passage, and the second side of the third screen, and th... | 09/12/2006 |
| 7101418 | Method and device for degassing a suspension, specifically a fiber stock suspension The invention relates to a method and a device for degassing of suspension, specifically fiber stock suspension. The method according to the invention is characterized in that separated excess suspension is discharged sideways through an overflow having an overflow ... | 09/05/2006 |
| 7094346 | Cross-flow filtration cassettes and methods for fabrication of same This invention relates generally to filtration cassettes, and, more particularly to methods of fabricating cross-flow filtration cassettes. Cassettes of the invention are characterized, in part, by an internal porting (e.g., manifolding) feature which eliminates the... | 08/22/2006 |
| 7073670 | High capacity depth filter bag A filter element for hydrocarbon emissions in, e.g., marine diesel engine applications, comprises a wound mat received within a filter bag. An annular end cap is bonded to one end of the wound mat, and is sealed around its periphery to a bag ring at the open end of ... | 07/11/2006 |
| 7074338 | Filtering method and filtering device Using the filter auxiliary agent separated by backwashing from a filter element repeatedly and effectively, the consumption amount of a filter auxiliary agent and the generation of industrial waste can be suppressed. In a filter auxiliary agent pre-coat circuit, a f... | 07/11/2006 |
| 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 |
| 7029584 | Rotating filter A device for filtering liquids comprising two shafts which are parallel to each other or at an acute angle wherein each shaft carries a stack of disks that extend perpendicularly to the shaft axis and are rotated thereby. The disks of one stack are engaged in the in... | 04/18/2006 |
| 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 |
| 7000777 | Vibratory separator screens Screen assemblies for a vibratory separator, the screen assemblies in certain aspects having at least two screening members, the at least two screening members connected by sewing material, and methods for making such screen assemblies. ... | 02/21/2006 |
| 6926821 | Water treatment device with volumetric and time monitoring features A totalization meter system for a water treatment device, the device having an inlet aperture and an outlet aperture, and a channel for channeling water between the inlet and outlet apertures. A flow reactive device is positioned in the channel and is exposed to the... | 08/09/2005 |
| 6908550 | Filter bag A filter bag for a pool cleaning device includes a bag structure, formed of nylon mesh material, and a discharge opening, formed by a zipper. The zipper allows for temporary access to the interior chamber of the bag by opening the zipper. ... | 06/21/2005 |
| 6872301 | High shear rotating disc filter A high shear rotating disc filter having a hollow interior and constructed of a porous material such as sintered metal or ceramic with finely structured openings. The disc is mounted and secured onto a hollow shaft. The hollow shaft is connected to a vacuum source, ... | 03/29/2005 |
| 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 |
| 6669844 | Filtration device with stacked deep-bed filter elements The invention relates to a filtration device for deep-bed filtration which is easier to handle and enables filter modules(s) to be changed and disposed of easily. The filtration device has a casing with at least one filter module inserted in the casing wi... | 12/30/2003 |
| 6596168 | Filter element and method for the manufacture The invention relates to a filter element and its manufacture to be used in removal of liquid from solids containing material to be dried in a capillary suction dryer which filter element contains a ceramic microporous layer having the pore size under 5 m... | 07/22/2003 |
| 6551458 | Method and apparatus for recovering fibers from white water of paper mill In a papermaking process, filtering of white water containing fiber material is performed by feeding the white water to a filter on a surface of which a layer of auxiliary pulp has been formed, such that the white water is filtered through the layer of au... | 04/22/2003 |
| 6540913 | Filter apparatus having a maintaining device for centering a stack of filtration disks A maintaining device for a filter medium having a stack of filtration disks presenting a central aperture, characterized in that it comprises a first flange with at least one central opening, a second flange and at least one perforated first central eleme... | 04/01/2003 |
| 6478969 | Shear separation method and system A shear separation system or method uses shear lift forces and permeate drag forces to separate substances having a size less than a predetermined separation size from substances having a size greater than the separation size. The balance of the drag forc... | 11/12/2002 |
| 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 |
| 6454940 | Retention of filter elements A filtration apparatus comprises a plurality of filtration sections such as (12, 13), each covered on both opposed faces by a filter cloth (14). Each filter cloth (14) is formed with a compressible edge bead (26) which is received in a corresponding groov... | 09/24/2002 |
| 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 |
| 6294098 | High efficiency backwash shoe In an apparatus containing rotating filter media that removes solids from a fluid stream, the invention provides devices and methods for improved cleaning of the filter media. Solids trapped on the filter media are removed by the application of a suction ... | 09/25/2001 |
| 6283306 | Rotating filter A rotating filter having at least two annular filter disks each having a plurality of filter elements and being carried by a shaft for rotation about an axis perpendicular to the planes defined by the disks. A discharge chute extends into the space betwee... | 09/04/2001 |
| 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 |
| 6258282 | Rotatable filter system for filtration of a flowing substance A filter and a method for filtration is based upon moving a filter surface that is caused to move through a first filtration region (FF) for separation of a prefiltrate and through a second filtration region (KF) for separation of a clear filtrate. A vacu... | 07/10/2001 |
| 6231761 | Rotary disk filter A rotary disk filter comprises a rotatable drum (2) and at least one disk-shaped filter member (10), which on the outside of the drum extends outwards in the transverse direction of the drum. The filter member (10) has a filter support unit (40) and a fil... | 05/15/2001 |
