Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| RE40481 | Air filtration device for internal combustion engine Filtration method and device for filtering solid contaminants from a stream of a flowing fluid such as internal combustion engine intake air. An imperforate housing has a tubular inlet exiting at its downstream end into a conically divergent first wall section termi... | 09/09/2008 |
| 7063783 | Strainer A conduit has a first end and interior and exterior surfaces extending downstream from the first end. A strainer has a first end and a second end. An upstream portion of the strainer is positioned engaging a projection on the interior surface of the conduit to resis... | 06/20/2006 |
| 7029508 | Catalyst attached to solid and used to promote free radical formation in CMP formulations The present invention provides a composition for chemical-mechanical polishing which comprises at least one abrasive particle having a surface at least partially coated by a activator. The activator comprises a metal other than a metal of Group 4(b), Group 5(b) or G... | 04/18/2006 |
| 7025882 | Waste disposal plant for wet garbage, especially for refuse from large-scale kitchens This invention refers to a waste disposal plant for wet garbage, especially for refuse from large-scale kitchens. The wet garbage is transported by compressed air or a partial vacuum from decentralized input stations (30) to a central discharge device (12 | 04/11/2006 |
| 7014669 | Catalytic composition for chemical-mechanical polishing, method of using same, and substrate treated with same The present invention provides a composition for chemical-mechanical polishing which comprises at least one abrasive particle having a surface at least partially coated by a catalyst. The catalyst comprises a metal other than a metal of Group 4(b), Group 5(b) or Gro... | 03/21/2006 |
| 6955266 | Strainer A conduit has a first end and interior and exterior surfaces extending downstream from the first end. A strainer has a first end and a second end. An upstream portion of the strainer is positioned engaging a projection on the interior surface of the conduit to resis... | 10/18/2005 |
| 6942796 | Filter device for filtering a liquid A filter unit is disclosed suitable for use in a filter housing. The filter unit comprises superposed and spaced-apart inclined lamellar structures, preferably in the form of hollow truncated cones, each having a lower end side opposite an upper end side and a passa... | 09/13/2005 |
| 6939465 | Fluid filter system for snow making apparatus A fluid filtering system for filtering dirt and other debris from fluids being conveyed in a pipeline for snow making apparatus and other devices. An upright pipe segment is connected to a horizontal pipe segment through a pipe elbow or angle for conveying fluid suc... | 09/06/2005 |
| 6863758 | Method of assembling plastic filter element with plastic casing A method of assembling a filter element includes the initial step of forming a plastic filter casing with openings from a flat blank with opposite ends thereof bent towards one another and joining these opposite ends together by a sealing seam. Also, a resilient mat... | 03/08/2005 |
| 6836963 | Process for production of conical filter elements A process for production of conical filter elements, in particular slotted tube filter elements, includes forming a support structure of a plurality of support rods around which is wound at least one wire profile in individual turns. Slots are left clear in the wire... | 01/04/2005 |
| 6808552 | Air filtration device for internal combustion engine Filtration method and device for filtering solid contaminants from a stream of a flowing fluid such as internal combustion engine intake air. An imperforate housing has a tubular inlet exiting at its downstream end into a conically divergent first wall section termi... | 10/26/2004 |
| 6739460 | Non-contaminating paint strainer A non-contaminating paint strainer is comprised of a conical receptacle having a conical tapering side wall. The side wall has an inner surface and an outer surface. The conical receptacle defines a lower filtration portion having an aperture provided with reinforci... | 05/25/2004 |
| 6722508 | Removable cartridge assembly for filtering bi-directional axial flow and radial flow and method of making same A one-piece filter cartridge is formed by inserting an open ended cylindrical screen and an end screen for the cylindrical screen in a mold and overmolding with engineered resinous material to form spaced annular and axial support ribs for the screen material. The c... | 04/20/2004 |
| 6712964 | Method of fastening filter media to flat circular support structure A screen filter device or strainer for separating liquid from solids having a disposable filter media which is easily detached and affixed to a filter support to provide for ease of replacement. ... | 03/30/2004 |
| 6692639 | Stacked conical filtration or separation apparatus A conically shaped filtration and/or separation apparatus is provided which is constructed from a stack of filters at least some of which are different sizes superposed above each, other, of said plurality of said filters in a fluid communicable relations... | 02/17/2004 |
| 6663774 | Centrifuge screen A centrifuge screen includes a series of support rods supporting and underlying a series of filter wires. The filter wires have a triangular cross-section and are less than 0.030 inches in cross-sectional width. The filter wires are spaced less than 0.010... | 12/16/2003 |
| 6613221 | Sieve filter for fluid conduits, especially for hydraulic pressure lines in internal combustion engines A sieve filter for fluid lines, especially for hydraulic pressure lines (2) in internal combustion engines which is formed of a hollow cylindrical main body (3) with a fluid inlet (4) and a fluid outlet (5), and of a fine mesh filter element (6) for throu... | 09/02/2003 |
| 6579456 | Method and device for precipitating beverage sediment A device and a method are described, which are used for precipitating beverage sediment from the rinsing mixture of beverage production machines and which comprise a rinsing conduit, a sediment receptacle and a filtering means. In order to design a device... | 06/17/2003 |
| 6579458 | Screening device A screening device includes a screening element connected to a reinforcing element by a frictionally engaging clamping connection. Spacers located between the screening element and the reinforcing element provide a radial clearance therebetween. The scree... | 06/17/2003 |
| 6568539 | Renewable filter with a bypass valve A twist-on renewable filter comprising a one-piece hollow housing, made of polymeric material having a threaded adapter for attachment to a distribution head assembly. The filter housing is fabricated from components that are made of a polymeric material ... | 05/27/2003 |
| 6547966 | In-line basket filter for a spray spout assembly A hand held spray spout (10) has a basket filter (26) seated against an anti-siphon valve (24) proximate the base end of a water passage (12) within the spout. The filter has a plurality of protrusions (50) mounted within the inner diameter of the valve (... | 04/15/2003 |
| 6468428 | Glass material for carrying a photocatalyst, filter device using the same and light irradiating method A photocatalyst is carried on a surface of a light guiding body for guiding light needed to activate the photocatalyst in such a manner the light guided by the light guiding body irradiates directly from the surface of the light guiding body the photocata... | 10/22/2002 |
| 6468427 | Fluid filter for use in extracorporeal blood processing A filter having a substantially cylindrical or slightly tapered body design which has a plurality of elongated apertures formed therethrough. Each aperture is defined side to side by a pair of elongated, wedge-like rib members disposed one on each side of... | 10/22/2002 |
| 6461506 | Filter A filter for a fuel injection device, comprising a plurality of filter elements arranged within a housing such that, in use, fluid is directed through clearances of predetermined size between respective mutually adjacent ones of the elements for preventin... | 10/08/2002 |
| 6413422 | Candle filter elements and method for fixing same in a pressure vessel A candle filter element adapted to be located inside a pressure vessel and fixed in a hanging position to a collector tube for aseptic and/or sterile filtration of liquids, has a coupling with conical upper coupling part and a conical lower coupling part,... | 07/02/2002 |
| 6318564 | Strainer A pipe line strainer has a strainer body having an inner body wall surface and defining a flow passageway, and further defining a strainer inlet in communication with the flow passageway and a strainer outlet spaced from the strainer inlet along the flow ... | 11/20/2001 |
| 6296055 | Combination retrievable drilling fluid filter and wiper A combination collar based retrievable drilling fluid filter and wiper with threaded ends for easy inclusion within the drill string, and a through bore for passage of drilling fluids and insertion of a wire line retrievable filter and wiper unit which is... | 10/02/2001 |
| 6261079 | Screen exchanging device At a distal end of a slide bar 4 which is axially slidably inserted in a through hole 1a of a housing 1 is formed a cylindrical filter chamber 7. The filter chamber 7 has a communicating hole 6 communicating with an inlet 3 provided in the housing 1 and a... | 07/17/2001 |
| 6228274 | Renewable filter A twist-on renewable filter comprising a one-piece hollow housing, made of polymeric material having threads for attachment to a distribution head assembly. A filter element is adhesively bonded at one end to the floor of the housing and at its opposing e... | 05/08/2001 |
| 6171536 | Apparatus and method for melt spinning of molten polymeric material A method and apparatus for melt spinning molten polymeric material into filaments, preferably embodied in the form of a spin pack assembly, utilizes an annular polymer filter formed of a screen mesh material to have a U-shaped axial cross-section defining... | 01/09/2001 |
| 6103116 | Collapsible filter A collapsible fluid filter is disclosed. The filter comprises, in part, a filter medium for filtering impurities from a fluid and a lower rim sealably disposed around the filter medium. The filter further includes an upper rim and a fluid impervious colla... | 08/15/2000 |
| 6083392 | Ribbed funnel A funnel having at least one channel or groove formed by projected ribs in the sidewalls of the funnel. The projections space the sides of a filter membrane placed inside the funnel, thereby preventing the sides of the filter insert from adhering to the s... | 07/04/2000 |
| 6065609 | Beverage brewing kit A hot beverage brewing kit comprised of a double-walled cup and a cylindrical filter support stowable between the cup's walls is disclosed. A retaining ring secures a cone-shaped textile fabric filter to the filter support. The filter stows in a space bet... | 05/23/2000 |
| 6030532 | Solid-liquid separator and filter This centrifugal apparatus comprises a primary frusto-conical filter screen rotating about a vertical axis, which is closed at its smaller diameter end and which is surrounded at its larger diameter upper end by a flat horizontal imperforate ring. A secon... | 02/29/2000 |
| 6010458 | Spirometer filter media and device The present invention is a spirometer mouthpiece assembly having a bag or sock filter medium. A support mechanism is incorporated into the assembly to prevent the filter medium from becoming dislodged during use. This not only protects the user of the spi... | 01/04/2000 |
| 5916435 | Conical coreless filter assembly and element An improved conical coreless filter element is shown which has an open upper end cap and a lower closed end cap. The conical coreless filter element fits inside a support cage or basket of complimentary conical shape which has a diameter the same size as ... | 06/29/1999 |
| 5902365 | Filter hose assembly employing a conical filter element A filter assembly is formed of an impervious elongated tubular housing and an elongated filter member positioned within the housing. In a first embodiment a barrier is interposed between a filter member first surface and the housing internal tubular surfa... | 05/11/1999 |
| 5897787 | Strainer and method for separating solid particles from a liquid A strainer formed by a body member defining an inlet passage for receiving the fluid and an outlet passage for discharging the fluid. A chamber is connected to the outlet passage and an internal passage connects the inlet passage to the chamber. A separat... | 04/27/1999 |
| 5893972 | Sectors for rotary disc filters having convex,curved, radial side edges A sector for a rotary disc filter has two elongate side channesl that have a generally U-shaped cross section. Each side channel defines an open trough that faces the interior of the sector. The side channels have smooth, convex shapes forming smooth, rou... | 04/13/1999 |
| 5840189 | Beverage filter cartridge A beverage filter cartridge includes an impermeable yieldably pierceable base having a predetermined shape and an access opening at one end. A self-supporting wettable filter element is disposed in the base and is permanently sealed to an interior surface... | 11/24/1998 |
