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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 |
| 7419526 | Conformal filter cartridges and methods Conformal filter cartridges, filtering apparatus using the conformal filter cartridges, and methods of manufacturing the conformal filter cartridges are disclosed. The conformal filter cartridges may include a bed of filter material between a pair of support plates,... | 09/02/2008 |
| 7371267 | Wire filter cage An improved filter support structure for supporting filter media. The support structure includes two sections removably coupled together with an improved coupling assembly. The first section has a cross section presenting a first width spaced apart from a second wid... | 05/13/2008 |
| 7354469 | Vacuum conveyor device with a multi-stage filter system A Vacuum conveyor device (10) with a multi-stage filter system, has at least one inner filter (10A), one outer filter (10B), and one filter adapter (20) especially for air-tight and/or fluid-tight insertion of at least one of the filters,... | 04/08/2008 |
| 7332011 | Equipment air filter assembly A filter assembly for a structure having an air intake, the filter assembly including a filter media that is sized and shaped to cover the air intake. The ends of the filter media are connected by an elastic fastener, such that the filter media and the fastener enci... | 02/19/2008 |
| 7318851 | Filter element A filter element, and filter apparatus, include a filter pack, a seal member, and a seal support frame operatively connecting the seal member to the filter pack. The seal support frame includes an annular extension, which is preferably canted at an oblique angle to ... | 01/15/2008 |
| 7291197 | Particulate trap filter element A filter element has a filter media and at least one base member. The filter element further has a ceramic paste connecting the filter media to the at least one base member. ... | 11/06/2007 |
| 7285148 | Spring-loaded air cleaner cover A filter assembly for an engine and operable to support a filter element. The filter assembly includes a housing defining a filter receiving space having a first end and a second end. The first end and second end defining an axial length therebetween. A biasing elem... | 10/23/2007 |
| 7252704 | Filter arrangement and methods A filter arrangement includes a first filter element having opposite first and second ends; an axial length between the first and second ends; and a plurality of flutes. Each of the flutes has a first end portion adjacent to the first filter element first end, and a... | 08/07/2007 |
| 7186284 | Filter mounting system A filter mounting system for use in a baghouse having a tubesheet with a plurality of openings. The filter mounting system includes filter media and a tubular mounting collar attached to the filter media to mount the filter media relative to the tubesheet. The filte... | 03/06/2007 |
| 7135052 | Cassette filter A cartridge filter includes a folded package including filter material and a frame holding the folded package. The frame includes a plurality of profiled strips having identical profiles, and each having two ends. The frame also includes a plurality of corner joints... | 11/14/2006 |
| 6994744 | Filter arrangement and methods A filter arrangement includes a first filter element having opposite first and second ends; an axial length between the first and second ends; and a plurality of flutes. Each of the flutes has a first end portion adjacent to the first filter element first end, and a... | 02/07/2006 |
| 6960245 | Filter arrangement and methods A filter arrangement includes a first filter element having opposite first and second ends; an axial length between the first and second ends; and a plurality of flutes. Each of the flutes has a first end portion adjacent to the first filter element first end, and a... | 11/01/2005 |
| 6932850 | Pleated filter and a method for making the same A filter may comprise a plurality of pleats, at least one pleat including a pair of pleat legs and pleat tip region. In some embodiments, a thickness of pleat tip region at a point spaced about one to four pleat leg thicknesses from the end of the pleat tip region m... | 08/23/2005 |
| 6918940 | Filter device with corner attachment A filter element with a replaceable filtration panel held in place in a frame by elastic straps. A course support screen may be included atone side of the filtration panel. ... | 07/19/2005 |
| 6905529 | Wire Filter cage An improved filter support structure for supporting filter media. The support structure includes two sections removably coupled together with an improved coupling assembly. The first section has a cross section presenting a first width spaced apart from a second wid... | 06/14/2005 |
| 6858052 | Filter cartridge mounting structure A filter cartridge for use in a baghouse having a tubesheet with a plurality of opening. A flexible snapband is biased towards engagement with a surface defining one of the openings in the tubesheet and is adapted to receive a portion of the filter cartridge. The sn... | 02/22/2005 |
| 6840973 | Air cleaner for combustion engine An air cleaner is provided which is effective to retain a cleaner element 3 in a heteromorphic shape and which has an increased cleaning capability and an assemblability. The air cleaner includes a cleaner element 3 made of a urethane foam and formed i... | 01/11/2005 |
| 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 |
| 6790250 | Wire filter cage An improved filter support structure for supporting filter media. The support structure includes two sections removably coupled together with an improved coupling assembly. The first section has a cross section presenting a first width spaced apart from a second wid... | 09/14/2004 |
| 6740136 | Interconnected filter frame and filter framing method A filter product includes a filtration media combined with a multi-component frame assembly that can effectively support the filtration media in place proximal to its edges and in accordance with its desired orientation and wherein the assembly can be selectively ta... | 05/25/2004 |
| 6663685 | Filter assembly A filter assembly for collecting material that is entrained in a gas stream includes a housing for a filter element. The housing has first and second ends with an inlet and an outlet at the first end for the gas that is to be filtered, and a support surfa... | 12/16/2003 |
| 6626970 | Wire filter cage An improved filter support structure for supporting filter media. The support structure includes two sections removably coupled together with an improved coupling assembly. The first section has a cross section presenting a first width spaced apart from a... | 09/30/2003 |
| 6620223 | Pleated air filter assembly An air filter assembly which filters and purifies air prior to entering an external combustion engine includes a conical radially pleated filter element disposed over a filter carrier. When assembled, the pleats of the filter element are trapped between a... | 09/16/2003 |
| 6579337 | Reinforced, bendable filter element A filter element formed of a pleated filter medium (11) and having a seal or gasket element (15) on its periphery or end faces. On one side of the filter element, which may represent either the inlet or the outlet side of the filter element, at least one ... | 06/17/2003 |
| 6533845 | Filter arrangement and methods A filter arrangement includes a first filter element having opposite first and second ends; an axial length between the first and second ends; and a plurality of flutes. Each of the flutes has a first end portion adjacent to the first filter element first... | 03/18/2003 |
| 6517598 | Filter element having flange and methods A filter element is provided including a media construction including a corrugated sheet secured to a flat sheet rolled into a coiled construction. The filter element includes a mounting flange secured to the coiled construction. The mounting flange proje... | 02/11/2003 |
| 6485538 | Air-conditioning air filter The present invention provides an air-conditioning air filter capable of cleaning and replacing only a filter element thereof for resources saving, refuse reduction, and cost reduction, and also preventing air leakage due to expanded deformation of a main... | 11/26/2002 |
| 6454826 | Filter cartridge A filter cartridge is made of an accordion fold pack folded in a zigzag-shape. At the end faces (4) of the accordion fold pack, running parallel to the folds, provision is made for the closing elements (5) which include stiffening strips (6), partially co... | 09/24/2002 |
| 6416570 | Integrally molded type filter unit and manufacture of the same A filter unit comprising a filter part made of an adsorbent-bearing filtration material and characterized in that said filter part is integrally molded with a filter holding frame made of a thermoplastic resin and that the adsorbent of the filter part is ... | 07/09/2002 |
| 6416563 | Filter assembly A filter assembly for collecting material that is entrained in a gas stream includes a housing for a tubular filter element. The housing has first and second ends with an inlet and an outlet at the first end for the gas that is to be filtered, and a suppo... | 07/09/2002 |
| 6413290 | Filter cartridge with detection device A filtering device for treating substances passing therethrough includes a filter cartridge having a cylindrical inner wall surrounded by a cylindrical outer wall. The inner and outer walls are spaced to define an annular space between them. A filtering m... | 07/02/2002 |
| 6409786 | Filter assembly A filter assembly for collecting material that is entrained in a gas stream includes a housing having inlet and outlet ports for the gas that is to be filtered. The housing includes an end cap in which at least one of the ports is provided, and a body sec... | 06/25/2002 |
| 6383244 | Filter with retained safety element A filter (10) has a housing (12) extending along an axis (18) between first and second axial ends (20 and 22), and has a closed loop primary filter element (24) extending axially in the housing, and a closed loop safety filter element (48) in the hollow i... | 05/07/2002 |
| 6348085 | Filter arrangement and methods A filter arrangement includes a first filter element having opposite first and second ends; an axial length between the first and second ends; and a plurality of flutes. Each of the flutes has a first end portion adjacent to the first filter element first... | 02/19/2002 |
| 6267796 | Filter assembly with a double sealing lip A filter assembly includes an accordion fold pack made of filter material, which is sealingly joined to a retention frame. The retention frame has at its end face, at least on one side, a bracing whose length corresponds essentially to length of an end-fa... | 07/31/2001 |
| 6228152 | Filtering device for equipping a ventilation and/or heating and/or air conditioning unit, more particularly for a motor vehicle A filter device has a frame, a grid, a filter medium and, if desired, a gas adsorption medium. The frame is flexible so as to be temporarily deformable and is made of polypropylene, as is the grid. The filter medium is a mat of non-woven material and the ... | 05/08/2001 |
| 6045598 | Filter insert A filter insert which is insertable in a sealing manner into a filter housing includes an accordion fold pack whose end walls extend perpendicularly with respect to the longitudinal direction of the filter pack. Each of the end walls is surrounded in a se... | 04/04/2000 |
| 6033455 | Repeatedly usable filter frame and filter for fluid using the same To provide a filter frame which enables a filtering medium to be easily renewed on a site and makes it possible to provide a filter at a low cost. The filter frame comprises a pair of frame elements capable of being integrally coupled together through flange b... | 03/07/2000 |
| 5904744 | Fan filter with fasterning means An air filter designed to be placed at a definite distance L beyond the periphery of the primary airflow which is created by an operating fan, and attached to a stationary element of the fan or to a stationary element of an enclosed space with fasteners w... | 05/18/1999 |
