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| Number | Title | Issue Date |
| 7371266 | Apparatus for cleaning a diesel particulate filter with multiple filtration stages The present invention is directed to a filter cleaning device, in particular, diesel particulate filters. In one embodiment, the device includes a source of high pressure fluid and a mechanism transport the fluid to a nozzle or nozzles; an actuator for moving the no... | 05/13/2008 |
| 7326265 | Method for cleaning the upstream surface of a particulate filter The invention concerns a method for cleaning the upstream surface (14) of a particulate filter (10) of a heat engine exhaust line, the filter (20) being arranged in a casing (12) having an outlet (22) for exhaust gases. The method ... | 02/05/2008 |
| 7282086 | Fluid filter cleaning apparatus A filter cleaning apparatus for cleaning a filter using cleaning fluid comprises a housing, a filter holder for holding the filter, wherein the filter holder is mountable in the housing, a rotating means for rotating the filter holder, wherein the filter holder hold... | 10/16/2007 |
| 7101420 | Self cleaning air filtration machine and a method for using the same Self cleaning air filtration machine and a method for using same comprising; a filter with a motor driven belt or disk or counter rotating disks that are perforated, a spray bar, a recirculation pump and supply line, a wet tank, a ultrasonic transducer, ultraviolet ... | 09/05/2006 |
| 7094265 | Cleaning device for a bundle of tubular filter elements designed with one end open, preferably of an industrial dust filter A cleaning device for a bundle of tubular filter elements designed with one end open, preferably of an industrial dust filter, is proposed. Injectors for delivery of a pulse-like compressed-air jet into the filter elements are arranged above the openings of the filt... | 08/22/2006 |
| 7025811 | Apparatus for cleaning a diesel particulate filter with multiple filtration stages The present invention is directed to a filter cleaning device, in particular, diesel particulate filters. In one embodiment, the device comprises a source of high pressure fluid and means to transport the fluid to a nozzle or nozzles; an actuator for moving the nozz... | 04/11/2006 |
| 7022194 | Method of treating a paint booth dry filter The present invention includes a composition having detackifying and detoxifying properties such that the composition is useful for detackifying and detoxifying paint particles in spray booth water and for treating a paint booth dry filter to render the filter fire ... | 04/04/2006 |
| 7018449 | Filtration media Particles may be used to filter oleo material such as grease from a flow of fluid such as a gas. The particles can be arranged into a bed to filter the oleo material from the fluid. The filtrate substance collect on the inorganic particles. The particles are re-usab... | 03/28/2006 |
| 6955762 | Method of cleaning membranes The present invention relates a method for cleaning polymeric microfiltration membranes and membrane units, and to compositions useful in such methods. The compositions include at least one soluble sulfite reducing agent and a compatible solvent. ... | 10/18/2005 |
| 6926760 | Method for cleaning a particular filter The invention relates to a method of cleaning a particle filter (1) by means use of a fluid, whereby the filter material is alternately treated with pressure and high flow rate. By means of the above using this method, the ash is washed out of the filter mate... | 08/09/2005 |
| 6913637 | Air purifier An air purifier includes a main body defining an air passage therein to allow sucked air to pass therethrough prior to being discharged, and a first filter installed in the main body to be switched between a closed state and an open state. The first filter removes c... | 07/05/2005 |
| 6902592 | Apparatus and method for cleaning an air filter unit Shown is an apparatus and method for cleaning filter units of an air filtering system using a reverse flow pulse of pressurized air. The filter cleaning system includes a venturi element (36) with a narrowed throat portion (56). A blowpipe (46) ... | 06/07/2005 |
| 6866693 | Washable air filter for internal combustion engine A washable air filter for an internal combustion engine which has high durability and can be washed with ease to reuse it is disclosed. The washable air filter includes an outer cylindrical member 10; an inner cylindrical member 11; a first filter elem... | 03/15/2005 |
| 6863715 | Method for cleaning air and apparatus therefor, and method for humidifying air and apparatus therefor A method for cleaning air and an air cleaner utilizing it are disclosed, by which the air cleaner can be made smaller than the conventional air cleaners when the performances are the same. According to the method of the invention, a filter formed on peripheral porti... | 03/08/2005 |
| 6793716 | Method and installation for cleaning a particulate filter on a motor vehicle The particulate filter is disassembled in order to separate it from the exhaust line and the filtering support of the particulate filter is contacted with a cleaning solution, for example contained in a tank, for a period sufficient to ensure soaking of the filterin... | 09/21/2004 |
| 6676720 | Filter unit for filtering gas A filter unit (1) for filtering gas has a plurality of bag filters (10) hanging down from a suspension plate (7) dividing a housing into a lower gas inlet side (9) and an upper outlet side (8) for filtered gas. The individual bag filter (10) has an open e... | 01/13/2004 |
| 6602328 | Gas turbine suction air filter, a gas turbine using the same and a method for using the same A gas turbine suction air filter is provided wherein, despite a large capacity, dust is easily removed by an ultrasonic washer. A gas turbine suction air filter (1) has a box-like frame member (3) and a filter cloth (5) contained in the frame member (3). ... | 08/05/2003 |
| 6423119 | Poly (1-trimethysilyl-1-propyne) membrane regeneration process A novel process for the regeneration of PTMSP membranes is disclosed. The regeneration process includes washing a fouled PTMSP membrane with a solution containing at least about 50% butanol in water for a time sufficient to increase the flux and/or select... | 07/23/2002 |
| 6358290 | Processing apparatus with filter A processing apparatus is provided, particularly a granulating or coating apparatus. A filtering assembly is arranged above or adjacent a processing chamber for removing dust from process air containing a particulate material. The filtering assembly inclu... | 03/19/2002 |
| 6340383 | Filter having a cleaning nozzle A filter for filtering a particle-containing medium and having nozzles includes a housing having an inlet opening and an outlet opening for the cleaning fluid, the openings forming between them a passage defined by a wall, a valve body having a valve head... | 01/22/2002 |
| 6200367 | Water washable stainless steel HEPA filter The invention is a high efficiency particulate (HEPA) filter apparatus and system, and method for assaying particulates. The HEPA filter provides for capture of 99.99% or greater of particulates from a gas stream, with collection of particulates on the su... | 03/13/2001 |
| 6162286 | Exhaust cleaning system A main body of exhaust cleaning system 15 is arranged in a hood 8 that is connected to an exhaust duct 14 at an upper part and is opened at a bottom face. A grease filter 23 is arranged at a side plate of a main body case 18 having an inlet 19 into which ... | 12/19/2000 |
| 6063164 | Filtration process for glass furnace dust A method for filtering the dust in gaseous emissions discharged from a glass furnace includes filtering the emissions at a traverse speed of at least 0.1 m/sec with at least one filtering element downstream of the furnace, and regenerating the filtering e... | 05/16/2000 |
| 6051053 | Trapping device and method of operation therefor A trapping device that performs a regeneration operation efficiently so as to raise the overall operational reliability by improving the service life as well as to lower the capital and operation cost of the processing system. The trapping device includes... | 04/18/2000 |
| 6019816 | Systems and methods for removing residue from process gases exhausted from microelectronic device fabrication processes Process gases from microelectronic device fabrication processes are pumped through a filter unit including a plurality of absorbers for absorbing water entrained within the process gases. Residues deposited within the filtering unit are removed by sprayin... | 02/01/2000 |
| 5951745 | Environmentally benign, washable wet filter A wet filter which will not foul washing facilities and plumbing systems, and which will not introduce harmful substances into the environment. The filtering element, which mayk be a resilient, open cell foam material or a woven fabric, is coated with a m... | 09/14/1999 |
| 5807424 | Regenerative adsorption filter bed for exhauster hoods An odor filter for exhauster hoods, which filter includes an adsorption filter bed regenerable by washing. The filter bed is made of a highly air-permeable substrate material and an adsorbent affixed thereto in the amount of 50 to 400 g/l by an adhesive m... | 09/15/1998 |
| 5795359 | Apparatus for separating particulate and/or powdery material from an entraining gas An apparatus for separating particulate or powdery material from an entraining gas includes a housing defining a closed chamber having an inlet for the material and gas, an outlet in the lower region of the housing for separated material, an outlet for fi... | 08/18/1998 |
| 5766281 | Apparatus for removing dust from gas with liquid filter cleaning nozzles The apparatus has at least one container. This has an inner wall part which separates a crude gas space from a clean gas space and holds filters projecting into the crude gas space as well as wet cleaning devices which have a displaceable spray member wit... | 06/16/1998 |
| 5702516 | Method of using water soluble foamed starch for reclaiming paint over-spray particles A method of using water soluble foamed starch for reclaiming paint overspray particles from air includes the steps of passing a stream of air containing paint overspray particles through an air filter assembly having a filtration element. The filtration e... | 12/30/1997 |
| 5468397 | Gas backwash of pleated filters In critical filtration applications, filter cartridges are employed to replace ion exchange resin precoat filters to minimize the waste produced. The filter cartridges are backwashed with all gas and the liquid in the filter housing provides an active sco... | 11/21/1995 |
| 5389127 | Method of cleaning a drop separator and drop separator with cleaning device A method for cleaning a drop separator includes the steps of mounting a plurality of parallel blades along a gas channel, spraying the blades with cleaning jets of wash water pulsed from a plurality of flat jet nozzles, and displacing the plurality of the... | 02/14/1995 |
| 5358552 | In situ filter cleaning system for gas streams The filtration system comprises a holding vessel and a filter for clarifying contaminated influent gas streams by passing the stream through the filter. The holding vessel has an inlet port for receiving the influent gas to be filtered and for draining th... | 10/25/1994 |
| 4731100 | Method and apparatus for washing a plurality of filter elements A method and apparatus for simultaneously washing a plurality of generally tubular or sock-like filtering elements of a gas filtering apparatus without removing the elements from the apparatus, the filter elements being disposed in a regular array of rows... | 03/15/1988 |
| 4545789 | Removal of organic residue from fiber mist eliminator The organic material fouling fiber mist eliminator elements used in the chemical process industry (e.g., to filter chlorine gas in the production of chlorine) is removed by treating the fouled element with a heated, dilute aqueous caustic solution.... | 10/08/1985 |
| 4444574 | Partially-carbonized polyacrylonitrile filter A filter for extracting solids and liquids from gaseous combustion exhausts comprises a textile filter element formed of polyacrylonitrile fibers oxidized by careful heat treatment and comprising approximately 61% carbon after treatment. The filter may be... | 04/24/1984 |
| 4375976 | Method and apparatus for recovering particulate matter from gas stream Filter apparatus and a method for removing dry combustible particulate material from a stream of gas in two steps of separation, utilizing a primary separator to remove the majority of the material from said stream of gas and a secondary filter apparatus ... | 03/08/1983 |
| 4370152 | Gas dryer cartridge A gas dryer cartridge for removing the moisture from a sample gas stream prior to the application thereof to a metabolic measuring instrument. A dryer housing having an inlet and an outlet is partitioned into a first, gas drying chamber containing a desic... | 01/25/1983 |
| 4323373 | Apparatus and method for cleaning air An apparatus and a method for cleaning air carrying smoke, grease, ordors and other pollutants. The air having the grease and other pollutants, such as the exhaust air from a restaurant cooking grill, is passed through a filter box in which is mounted two... | 04/06/1982 |
| 4167482 | Filtering method and apparatus A filtering apparatus has a housing and a brush-like filter element in the housing. The filter element includes a support which is permeable to the liquid or gas to be filtered. A filtering medium is secured to the permeable support and is in the form of ... | 09/11/1979 |
