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| Number | Title | Issue Date |
| 7425227 | Pleated filter element with offset emboss pattern A pleated fluid filter element for removing particulate matter from a fluid stream that comprises a pleated filter media provided with a plurality of pleats having peaks and valleys and having a clean and dirty side. The pleated filter media further has arrays of el... | 09/16/2008 |
| 7419524 | Filter system A filter system includes several filters, particularly a main filter and at least one prefilter, which are disposed one after another and are made of a filter material that is encompassed by frames. The sides of the frame of the main filter and the frame/s of the pr... | 09/02/2008 |
| 7416576 | Fiber bed assembly and fiber bed therefor A fiber bed assembly for a mist eliminator that operates at high efficiency and inhibits re-entrained liquid from leaving the mist eliminator. The fiber bed assembly has a construction that facilitates rapid drainage of liquid collected by the fiber bed. A pre-filte... | 08/26/2008 |
| 7323106 | Multi-element filter with multiple pleat channel height A filter has multiple pleated filter elements having axially extending channels having a transverse pleat channel height and a lateral channel width. The pleated filter elements have different channel heights. ... | 01/29/2008 |
| 7314558 | Pleated panel fluid filter A pleated panel fluid filter filters fluid flowing along an axial flow direction and includes angled panels and/or progressively increasing flow channel width and/or skewed panel projections and/or flattened pleat tip bend lines. ... | 01/01/2008 |
| 7287684 | Filter cartridge assembly and method of manufacture An apparatus for filtering well fluids and method of manufacture is disclosed. The apparatus comprises an inner support, a filter spirally wrapped around the inner support, and an outer support wrapped around the filter enclosing the filter between the inner and out... | 10/30/2007 |
| 7128772 | Filter assembly, process for producing the filter assembly and filter body having the filter assembly A filter assembly through which a fluid can flow and a method for the production thereof are provided. The filter assembly includes at least one covering layer made of an at least partially porous material with at least one boundary region and includes at least one ... | 10/31/2006 |
| 7097693 | Combination depth and phase separation membrane filter A combination depth and phase separation membrane filter to remove entrained liquids and immiscible liquids from hydrocarbon liquids, protecting industrial analyzers from liquid and solid contamination, etc. The preferred embodiment of the present invention contempl... | 08/29/2006 |
| 6955699 | Device for filtering the intake air of internal combustion engines A device for filtering the intake air of an internal combustion engine having an expansion box (110) with an opening (12) for the intake air to pass therethrough, has a filter fixed to the opening that includes a first tubular filtering element having ... | 10/18/2005 |
| 6953124 | Filter element with end face inlets and discharge outlets A filter element for end face inlet formed of triangular channels which are alternately closed such that the fluid to be filtered must pass through the filter material in order to flow from the inlet side (22) to the discharge side (23). The channels a... | 10/11/2005 |
| 6949134 | Vacuum cleaner Disclosed is a vacuum cleaner which can remove sludge, bad smells and toxic gases and discharge the filtered air to the upper portion of the vacuum cleaner to prevent the filtered air from being sucked with non-filtered air into the cleaner again. The vacuum cleaner... | 09/27/2005 |
| 6929843 | Fence tape A tape barrier consisting of flexible material, has generally parallel edges and substantially greater length than width. Cuts are made into the tape at intervals along the tape forming slits that define cross members that extend generally along the length of the ta... | 08/16/2005 |
| 6825136 | Filtering screens for vibratory separation equipment A filtering screen comprises a fine woven wirecloth filtering mesh (4) disposed above a coarse woven wirecloth support mesh (2). An intermediate woven wirecloth mesh (3) is disposed between the fine woven mesh (4) and the coarse woven mes... | 11/30/2004 |
| 6766636 | Gas turbine intake air filter unit The invention provides a gas turbine intake air filter unit, wherein flow resistance of intake air passing through a tertiary filter layer does not become unreasonably great despite the filter layers are increased from two stages to three stages, and a balance of co... | 07/27/2004 |
| 6764532 | Method and apparatus for filtering exhaust particulates A particulate filter for an exhaust system having an exhaust flow and a nominal flow area includes a housing and a plurality of plates arranged parallel to each other within the housing. Each plate has a plurality of orifices and a plurality of micropockets configur... | 07/20/2004 |
| 6764527 | Honeycomb structure constituted by main and sub honeycomb structures A honeycomb structure comprising at least one main honeycomb structure 10 and sub-honeycomb structures 21, 22 axially disposed, in series, on both end surfaces of the main honeycomb structure 10. Partial plugs 15 are constituted for some ... | 07/20/2004 |
| 6689278 | Combined hydrophobic-hydrophilic filter for fluids A combined filter for removing an aqueous fluid and entities, such as bacteria, existing in such aqueous fluid, from a nonaqueous fluid is described. The combined filter consists of a hydrophilic filter and a hydrophobic filter that are arranged in fluid ... | 02/10/2004 |
| 6656243 | Filtered air vent A filtered air vent has a housing with an inlet and outlet, at least one set of spaced apart airflow control elements extending across the housing elements, spaces between the elements, and a pleated filter disposed within the housing. The filter has alte... | 12/02/2003 |
| 6585788 | Exhaust particulate removing filter of diesel engine The width of at least one felt out of a plurality of felts (22 to 24) is formed of ceramic fibers superposed between two wire nets (26, 27) for a heater is made to be narrower than the width w of the wire nets for heater (26, 27), and the width of other f... | 07/01/2003 |
| 6391200 | Filter and method of filtering a fluid A spiral wound filter element is disclosed which includes alternating layers of filter medium and diffusion medium wrapped about a cylindrical core defining a central axis of the filter element. The alternating layers extend from a radially innermost laye... | 05/21/2002 |
| 6375854 | Combined hydrophobic-hydrophilic filter for fluids A combined filter for removing an aqueous fluid and entities, such as bacteria, existing in such aqueous fluid, from a nonaqueous fluid is described. The combined filter consists of a hydrophilic filter and a hydrophobic filter that are arranged in fluid ... | 04/23/2002 |
| 6261332 | Filtration system for a bed An air filtration system which is adapted to filter contaminants and is intended for use with a bed having a head area, comprising, one or more air intake ports adapted to be located under the bed; one or more fans adapted to be located under the bed and ... | 07/17/2001 |
| 6210469 | Air filter arrangement having first and second filter media dividing a housing and methods A filter arrangement includes a housing having first and second stage regions of filtering. The air flows through an inlet and into a first chamber having a cross-sectional area larger than the inlet. The air expands and particles drop to the bottom of th... | 04/03/2001 |
| 6203592 | Filter media configuration A filter element includes a filter media having an array of filter media panel members which are oriented at an angle of about 45° with respect to the air stream and are spaced so that the upstream edges of the panels overlap the downstream edges. Conseq... | 03/20/2001 |
| 6200362 | Volatile organic compound and particulate filter assembly for purifying a gas stream An improved filter system and method for filtering the gaseous environment of an incubator in which volatile organic compounds and particulate material are filtered from the gaseous environment. A filter is provided which includes a first filter medium to... | 03/13/2001 |
| 6063150 | Self-cleaning and self-sealing particle filter A self-cleaning particle filter for Diesel engines is provided. The filter includes a filter housing, control circuitry, a removable filter sandwich and independent power source. The removable filter sandwich includes a number of sintered metal strips sew... | 05/16/2000 |
| 6027540 | Apparatus for removal of particulate matter from gas streams An apparatus for the removal of particulate matter from the gaseous product stream of an entrained flow coal gasifier which apparatus includes an initial screen, an intermediate screen which is aligned with the direction of flow of the gaseous product str... | 02/22/2000 |
| 6019822 | Apparatus for air dehumidification having a unitary casing for a cyclone separator, a primary filter, a secondary filter, and a separation membrane element An air dehumidifying apparatus having a cyclone separator, a primary filter, a secondary filter, and a separation membrane element made of a special high polymer for passing steam smoothly and hardly passing air. The elements of the apparatus are disposed... | 02/01/2000 |
| 5853437 | Self-cleaning and self-sealing particle filter A self-cleaning particle filter for Diesel engines is provided. The filter includes a filter housing, control circuitry, a removable filter cartridge and independent power source. The removable filter cartridge includes a number of sintered metal strips s... | 12/29/1998 |
| 5749930 | Mist collector arrangement for gas washers Described is a mist collector arrangement for gas washers etc. having in gas flow direction a downstream and an upstream mist collector layer. The profiles of the successively arranged rows of the downstream and upstream mist collector layers are position... | 05/12/1998 |
| 5653786 | High capacity marine separator A high capacity marine separator (30) is disclosed which uses a first stage formed by an inertial vane separator (32), a second stage formed by a coalescer stage (36) and a third stage formed by an inertial vane separator (34). The coalescer stage (36) is... | 08/05/1997 |
| 5639370 | Compound layer resin bonded filter cartridge A hollow, cylindrical, resin-bonded filter cartridge has an inner, depth-type filter media with a graded density which decreases (becomes porous) in the radial direction from the inner surface to the outer surface. An outer strip of filter media is then w... | 06/17/1997 |
| 5605748 | Fiber beds for fiber bed mist eliminators There is provided a fiber bed for removing liquid aerosols and soluble solids from a gas stream in a fiber bed mist eliminator. The fiber bed is in the form of a flexible mat having a void fraction of greater than about 0.89 and greater than about 700 net... | 02/25/1997 |
| 5500271 | Paint arrestor formed from slit sheet material A paint arrestor for absorbing paint overspray comprises a series of layers of sheet material, each of the layers being slit and expanded to define an array of air spaces distributed in columns. The air spaces alternate in size from column to column and r... | 03/19/1996 |
| 5494412 | Oil delivery prevention device for horizontal type rotary compressor An oil delivery prevention device for a horizontal type rotary compressor for use in a refrigerating system. The device effectively separates the mixed gas into oil and refrigerant gas and prevents the oil from delivery along with the refrigerant gas to t... | 02/27/1996 |
| 5346519 | Filter media construction Filter media used for removing foreign matter from an air stream flowing therethrough, which includes a pair of first and second generally flat sheets of filtering material extending in generally parallel relation to one another with a spacing therebetwee... | 09/13/1994 |
| 5322536 | Filter apparatus Filter apparatus with a filter cartridge disposed in a compression-proof and pressure-sealed housing. The housing for the filter cartridge comprises two tubular cylinders, each of which having at least one opening of the same size, where both cylinders to... | 06/21/1994 |
| 5300133 | Soot particle exhaust-gas filter An exhaust-gas filter, for example a soot-particle filter, has a filter element which has inlet passages for the raw gas and outlet passages for the clean gas. In order as far as possible to prevent clogging of the filter over the running time caused by d... | 04/05/1994 |
| 5268013 | Filtration device in the form of a one-part cartridge intended for pyrotechnic generators Gas-filter in the form of an axisymmetric one-part cartridge (1), characterised in that it is essentially constituted by: a) a rigid ring (2) comprising an axisymmetric lateral wall (21) bounded by a flat-forming extremity (23) and by another, fold-down extrem... | 12/07/1993 |
| 5252111 | Expandable multi-ply obliquely oriented honeycomb filter media A multi-ply expandable filter media formed of obliquely oriented honeycomb organized into a ply or run having expandable honeycomb cells with one run oriented at, preferably an acute angle, of 30° to 60° relative to the cells of an adjacent run. Prefer... | 10/12/1993 |
