Filter Element Patents (Class 210/493.5)
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Publication number: 20130118974Abstract: A filter element includes filter media, first and second end caps, a latch arrangement projecting from the first end cap, a tubular neck extending from the first end cap and a valve head oriented within the first end cap aperture constructed and arranged to move between a position sealing the first end cap aperture and exposing the first end cap aperture. A filter assembly includes a filter element, as characterized herein, and including a filter base and a service cover. A method of servicing includes removing an old filter element, operably mounting a new filter element in a filter base including engaging a valve head against a spring member in the filter base, and operably mounting the service cover over the new filter element and filter base.Type: ApplicationFiled: January 2, 2013Publication date: May 16, 2013Applicant: Donaldson Company, Inc.Inventor: Donaldson Company, inc.
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Patent number: 8439204Abstract: A drop-in oil filter having top and bottom caps having annular recesses on facingly disposed surfaces adjacent their outer periphery, a pleated, woven metal cylindrical filter element having an outer and an inner diameter, a first cylindrical wire cage over the outer diameter of the filter element, a second cylindrical wire cage within the inner diameter of the filter element, ends of the filter element and the first and second cylindrical wire cages being fastened into the annular recesses in the top and bottom caps, the bottom cap having a first opening there through concentric with and within inner diameters of the filter element and the first and second cylindrical wire cages, and a first elastic grommet within the first opening having a central opening for sealing on a tube within a drop-in filter housing.Type: GrantFiled: September 12, 2006Date of Patent: May 14, 2013Assignee: Pure Power! IncorporatedInventor: Kelly Tidwell
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Patent number: 8414766Abstract: A serviceable device for filtering lubricating oil includes an inlet and an outlet, a first filtering element and an absorption filtering element. The absorption filtering element is configured to absorb a fluidic contaminant present in the lubricating oil when in contact with the absorption filtering element. A flow path for the lubricating oil is from the inlet, through the first filtering element, and out the outlet. The flow path further includes lubricating oil contact with the absorption filtering element.Type: GrantFiled: October 14, 2009Date of Patent: April 9, 2013Assignee: GM Global Technology Operations LLCInventors: Gregory Mordukhovich, James L. Linden, Andrew M. Mance
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Publication number: 20130062277Abstract: A filter includes a filter element (1) having a filter medium (106) pleated in a zigzag manner, with a raw side (105) and a clean side (104). Filter medium sections (120) extend on either side of the raw-side pleat tips (102a) to adjoining raw-side pleat bases (103a) include a first bend (552) toward the raw side (105), and behind that a second bend (554) toward the clean side (104). A plurality of elongated depressions (656) are formed on the raw side (105), which extend between pleat tips (102a) and pleat bases (103a) approximately perpendicular to pleat edges (F) and implement corresponding elevations (658) on the clean side (104) such that, in a raw-side pleat intermediate space (148a), in each case, two depressions (656) on the two medium sections (120) delimiting the pleat intermediate space (148a) are located directly opposite of each other and each form a flow channel (660).Type: ApplicationFiled: March 7, 2012Publication date: March 14, 2013Applicant: MANN+HUMMEL GMBHInventors: Gelase Mbadinga-Mouanda, Klaus Gehwolf
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Publication number: 20130062276Abstract: A pleated filter media comprises a plurality of pleats comprised of pleat segments extending in an axial direction between first and second axial ends and extending in a transverse direction that is perpendicular to the axial direction between first and second sets of pleat tips at least partially defined by first and second sets of bend lines. Axial flow channels are defined between the pleat segments in the lateral direction and the plurality of pleats has a width in the transverse direction that varies along the axial direction.Type: ApplicationFiled: March 5, 2012Publication date: March 14, 2013Applicant: Cummins Filtration IP Inc.Inventors: Anthony Barreteau, Arun Janakiraman, Kurt M. A. Badeau
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Publication number: 20130056415Abstract: A negatively charged microporous filtration medium having a high charge density comprising a porous substrate and a polymerized cross-linked polymeric coating located on the inner and outer surfaces of the substrate. The coating may be formed from a reactant solution comprising negatively charged cross-linkable polymerizeable acrylamidoalkyl monomers and acrylamido cross-linking agents which are polymerized in situ on the substrate. The negatively charged microporous filtration medium are suitable for use as prefiltration membranes for selectively removing protein aggregates from a protein solution.Type: ApplicationFiled: February 26, 2010Publication date: March 7, 2013Inventors: Mikhail Kozlov, Kevin Rautio
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Patent number: 8361182Abstract: An air filter cartridge is provided including an air filter media construction having a first, outlet end, flow face and an opposite, second, inlet end, flow face. The filter media construction includes fluted media secured to a facing media sheet. The filter media is closed to flow of unfiltered air completely therethrough. A centerboard is provided. The centerboard has a media portion embedded within the media construction. The centerboard has first and second opposite sides. The media portion that is embedded within the media defines an aperture arrangement extending completely through the centerboard from the first side to the second side. An adhering sealant secures the centerboard to the media construction. At least some adhering sealant extends through the aperture arrangement.Type: GrantFiled: September 21, 2010Date of Patent: January 29, 2013Assignee: Donaldson Company, Inc.Inventors: Mark Belcher, Matthew A. Kalis
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Publication number: 20130008849Abstract: A device for folding a web-shaped filter medium of a filter element has an energy-introducing embossment unit and a feed device that feeds a web-shaped filter medium to the embossing unit where folding lines are embossed into the web-shaped filter medium. A folding device is provided that folds the web-shaped filter medium along the folding lines. The energy-introducing embossment unit is provided to fuse layers of the multi-layer filter medium along the folding lines during embossment of the folding lines.Type: ApplicationFiled: September 13, 2012Publication date: January 10, 2013Applicant: MANN+HUMMEL GMBHInventors: Klaus Gehwolf, Christian Geiger
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Publication number: 20120312734Abstract: The web of the invention can comprise a super absorbent layer that can act as an moisture sensitive fuel shut-off valve, absorbent, adsorbant or reactant. The web of the invention can comprise a super absorbent fabric or layer made of a superabsorbent particle or fiber. Fluid, gas or liquid, that flows through or by the assemblies of the invention can have any gas, liquid or solid material dispersed or dissolved in the fluid interact with the super absorbent particulate. The structures of the invention can act simply as flow-by reactive, absorptive, or adsorptive layers with no filtration properties, or the structures of the invention can be assembled into filters.Type: ApplicationFiled: August 1, 2012Publication date: December 13, 2012Applicant: Donaldson Company, Inc.Inventors: Veli E. Kalayci, James Doyle, Derek O. Jones, Brian Babcock, Mike J. Hebert, Philip Edward Johnson, Ketan C. Mehta
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Patent number: 8328022Abstract: A filter includes a filter element (1) having a filter medium (106) pleated in a zigzag manner, with a raw side (105) and a clean side. On the raw side (105) and/or on the clean side of the filter medium (14; 106), a plurality of oblong adhesive sections (122) are disposed along at least two adhesive tracks (101) on the filter medium (106), which run obliquely or perpendicularly to the pleat edges (F) at least in some sections. Each adhesive track (101) having at least one adhesive section (122) and at least one adhesive interruption (107). The adhesive interruptions (107) are offset from each other such that in a medium section (120) the adhesive interruptions (107) do not form a passage (126) that runs continuously parallel to the pleat edges (F).Type: GrantFiled: March 7, 2012Date of Patent: December 11, 2012Assignee: Mann + Hummel GmbHInventors: Gelase Mbadinga-Mouanda, Klaus Gehwolf
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Patent number: 8269179Abstract: A lithographic apparatus includes an illumination system configured to condition a radiation beam, a projection system configured to project the radiation beam onto a substrate, and a filter system for filtering debris particles out of the radiation beam. The filter system includes a plurality of foils for trapping the debris particles, a support for holding the plurality of foils, and a cooling system having a surface that is arranged to be cooled. The cooling system and the support are positioned with respect to each other such that a gap is formed between the surface of the cooling system and the support. The cooling system is further arranged to inject gas into the gap.Type: GrantFiled: December 24, 2008Date of Patent: September 18, 2012Assignee: ASML Netherlands B.V.Inventors: Arnoud Cornelis Wassink, Levinus Pieter Bakker, Johannes Hubertus Josephina Moors, Frank Jeroen Pieter Schuurmans
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Patent number: 8263214Abstract: The web of the invention can comprise a super absorbent layer that can act as an moisture sensitive fuel shut-off valve, absorbent, adsorbant or reactant. The web of the invention can comprise a super absorbent fabric or layer made of a superabsorbent particle or fiber. The web can comprise a nanofiber layer having dispersed within the nanofiber layer a super absorbent particulate and optionally a second particulate material that can act as an absorbent, adsorbant or reactant. Fluid, gas or liquid, that flows through or by the assemblies of the invention can have any gas, liquid or solid material dispersed or dissolved in the fluid interact with the super absorbent particulate. If needed these materials can also react with, be absorbed by, or adsorbed onto, the active particulate within the nanofiber layer.Type: GrantFiled: February 14, 2011Date of Patent: September 11, 2012Assignee: Donaldson Company, Inc.Inventors: Veli E. Kalayci, James Doyle, Derek O. Jones, Brian Babcock, Mike J. Hebert, Philip Edward Johnson, Ketan C. Mehta
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Publication number: 20120223008Abstract: A filter includes a filter element (1) having a filter medium (106) pleated in a zigzag manner, with a raw side (105) and a clean side. On the raw side (105) and/or on the clean side of the filter medium (14; 106), a plurality of oblong adhesive sections (122) are disposed along at least two adhesive tracks (101) on the filter medium (106), which run obliquely or perpendicularly to the pleat edges (F) at least in some sections. Each adhesive track (101) having at least one adhesive section (122) and at least one adhesive interruption (107). The adhesive interruptions (107) are offset from each other such that in a medium section (120) the adhesive interruptions (107) do not form a passage (126) that runs continuously parallel to the pleat edges (F).Type: ApplicationFiled: March 7, 2012Publication date: September 6, 2012Applicant: MANN+HUMMEL GMBHInventors: Gelase Mbadinga-Mouanda, Klaus Gehwolf
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Publication number: 20120223009Abstract: A filter includes a filter element (1) having a filter medium (106) pleated in a zigzag manner, with a raw side (105) and a clean side (104). Filter medium sections (120), which extend on either side of the raw-side pleat tips (102a) to adjoining raw-side pleat bases (103a), include a first bend (552) toward the raw side (105), and behind that a second bend (554) toward the clean side (104), in each case viewed from the raw-side pleat tips (102a).Type: ApplicationFiled: March 7, 2012Publication date: September 6, 2012Applicant: MANN+HUMMEL GMBHInventors: Gelase Mbadinga-Mouanda, Klaus Gehwolf
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Patent number: 8251231Abstract: The invention relates to a corrugated or pleated flat material with a plurality of pleats or corrugations that run parallel to one another and successively define a pleat or corrugation peak and a pleat or corrugation valley, the peak and valley being connected to one another by way of a pleat or corrugation flank, wherein a fluid can flow through the flat material and the flat material has at least one deformable functional layer which rests on a supporting layer in the direction of throughflow of the fluid, said supporting layer comprising a supporting fabric, the functional layer allowing foreign substances to be removed from or delivered to the fluid. In order to develop the flat material in such a way that it has greater mechanical load-bearing capacity and lower resistance to throughflow, it is proposed according to the invention that the supporting fabric is deformable and comprises a twill weave.Type: GrantFiled: February 22, 2010Date of Patent: August 28, 2012Assignee: FSP Fluid Systems Partners Holding AGInventors: Andreas Schindelin, Wolfram Schadt
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Patent number: 8225940Abstract: A filter element includes a filter material (10) having individual filter folds (12) folded in a star-like manner. At least one fluid-permeable support element (26) extends at least partially in the space between two adjacent filter folds (12) and/or on the inner peripheral side and/or external peripheral side of the filter folds (12). The support element (26) is provided with filter-active substances or is made of filter-active substances. A certain type of filter auxiliary agent can be obtained which is used to reduce influences of fluid components which reduce the service life, in the form of specific ageing products or in the form of other agents which damage the fluid.Type: GrantFiled: March 4, 2006Date of Patent: July 24, 2012Assignee: Hydac Filtertechnik GmbHInventor: Armin Schmidt
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Patent number: 8167142Abstract: A liquid filter cartridge is provided. Preferred seal arrangements are provided, to provide for preferred axial load conditions, with respect to one or more of the end caps of the cartridge. Some cartridge configurations provided include no core structure or outer liner structure therein, to support axial load. Assemblies using the cartridge, and methods of assembly and use, are provided. The liquid filter cartridge can be a serviceable cartridge, or it can be retained permanently in a housing.Type: GrantFiled: April 4, 2005Date of Patent: May 1, 2012Assignee: Donaldson Company, Inc.Inventor: John R. Hacker
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Patent number: 8162153Abstract: Herein are disclosed high loft spunbonded webs that are substantially free of crimped fibers and gap-formed fibers. The webs exhibit a solidity of from less than 8.0% to about 4.0% and a ratio of Effective Fiber Diameter to Actual Fiber Diameter of at least 1.40. Also disclosed are methods of making such webs.Type: GrantFiled: July 2, 2009Date of Patent: April 24, 2012Assignee: 3M Innovative Properties CompanyInventors: Andrew R. Fox, John D. Stelter, Michael R. Berrigan, Jonathan M Lise
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Patent number: 8162152Abstract: A blood filter device includes: a housing that includes a dome 2 provided with a blood inlet, a filter retaining portion 3 that is positioned below the dome, and a bottom portion 4 provided with a blood outlet; and a filter 8 that is mounted in a cavity of the filter retaining portion and partitions a cavity of the housing into a dome side and a bottom portion side. A sheet-like filter member 8a of the filter forms a plurality of pleats, and ridgelines of the respective pleats traverse the filter retaining portion in parallel respectively.Type: GrantFiled: July 26, 2006Date of Patent: April 24, 2012Assignee: JMS Co., Ltd.Inventors: Masayoshi Omori, Shota Nakao, Yutaka Katsuno
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Patent number: 8157938Abstract: In a method for stabilizing folded filter media, a thread is coated with a hot melt adhesive to prepare a coated thread. The coated thread is wound in a plastic state about fold tips of a folded filter medium. The plastic state of the coated thread is maintained by applying heat. The heat is applied in the form of hot air, infrared radiation, or generated by microwaves.Type: GrantFiled: July 19, 2006Date of Patent: April 17, 2012Assignee: Mann+Hummel GmbHInventors: Jobst Eisengräber-Pabst, Siegfried Rapp, Pius Trautmann, Johannes Lampert
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Publication number: 20120085696Abstract: A filter element includes a pleated filter medium including pleat valleys and pleat walls. The filter medium has a base body including a first flank and a first plastic reinforcement joined to the first flank of the pleated filter medium and accommodating the pleat valleys and pleat walls of the filter medium.Type: ApplicationFiled: October 5, 2011Publication date: April 12, 2012Applicant: CARL FREUDENBERG KGInventor: Ulrich Schloer
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Patent number: 8147693Abstract: A multi-layer filter including a first media layer surrounded by a second media layer, a third media layer surrounding the second media layer, and at least one retainer disposed between the first and second media layers or between the second and third media layers. The first, second and third media layers surround the central axis of the filter. The filter has multiple media layers in a compact package, providing increased media surface area which allows greater contaminant holding capacity, lower pressure drop, and lower face velocity.Type: GrantFiled: May 20, 2008Date of Patent: April 3, 2012Assignee: Cumins Filtration IP, Inc.Inventors: Brian J. Terry, Daniel M. Buckner, Barry M. Verdegan, John W. Clevenger, Jr., Ravi Yekula
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Patent number: 8142538Abstract: A filter element in the form of a nonwoven self-supporting filtration web having rows of folded or corrugated spaced-apart pleats, the web containing continuous thermoplastic fibers a majority of which are aligned at 90°±20° with respect to the row direction. The filter element can be made by forming rows of pleats in such a nonwoven web and cutting the web to a desired size and shape. The filter elements can provide improved mechanical and filtration properties and can exhibit reduced susceptibility to pleat deformation and the loss of space between pleats.Type: GrantFiled: September 3, 2009Date of Patent: March 27, 2012Assignee: 3M Innovative Properties CompanyInventors: Douglas C. Sundet, Rahul R. Shah, John M. Brandner, Tien T. Wu
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Publication number: 20120037561Abstract: The invention relates to a pleated filter medium (1) having pleats (2) with rectangular sides and a length direction (L) parallel to the fold between the two sides of a pleat (2), comprising several rows of distance elements extending in a cross direction (C) relative to the folds in the pleated filter medium, said rows being distanced from each other along a length direction (L), whereby each row of distance elements is constituted of a line of glue elements (3) distanced from each other and applied to a side of the filter medium. According to the invention rows of glue elements (3, 4) are applied to both the inside and the outside of the filter medium, the rows on the inside being displaced in the length direction in relation to the rows on the outside. The invention also relates to a filter including such a filter medium.Type: ApplicationFiled: November 24, 2008Publication date: February 16, 2012Applicant: CAMFIL ABInventor: Stefan Schaeper
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Patent number: 8114291Abstract: A filter coalescer element for oil based industrial fuels includes a rigid, porous support tube, and a hydrophobic drainage layer covering the outer surface of the same. A single phase, dual function combination water coalescer and particle filter pleat block is positioned in the support tube, and is formed from a multilayer material having a first porous support layer, a synthetic microfiber layer, a synthetic fiber media layer and a second porous support layer. As the fluid passes through the pleat block, solid particles are physically filtered therefrom, and water is coalesced into droplets which pass from the pleats directly through the support tube and directly into the drainage layer, where the droplets grow into a size sufficient that they fall under gravity to the bottom of the element for collection.Type: GrantFiled: July 25, 2011Date of Patent: February 14, 2012Assignee: Kaydon Custom Filtration CorporationInventors: Jason A. Ellis, Ron J. Garrett
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Patent number: 8096423Abstract: One embodiment is a unique replaceable filter element. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the following description and drawings.Type: GrantFiled: December 21, 2010Date of Patent: January 17, 2012Assignee: Cummins Filtration IP, Inc.Inventors: Loick Menez, Kelly R. Schmitz, Gerard Malgorn, Ismail C. Bagci, Kevin C. South, Jeffrey B. Sharp
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Patent number: 8075720Abstract: A method of forming a filter element is disclosed comprising the steps of preparing a plurality of upstanding pleats each having first and second pleat legs, wherein the first pleat leg of one pleat is joined to the second pleat leg of a preceding pleat by a medial pleat section; moving the upstanding pleats into an overlapped condition wherein each medial pleat section becomes part of the second leg of a preceding pleat; and forming the overlapped pleats into a cylindrical configuration.Type: GrantFiled: February 25, 2011Date of Patent: December 13, 2011Assignee: 3M Innovative Properties CompanyInventors: Brian L. Fall, Thomas J. Hamlin, Mahesh Z. Patel, John L. Pulek, Aaron Spearin
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Patent number: 8066790Abstract: A filter housing and filter cartridge engagement structure comprising a housing having at least one ramp adapted to engage lugs of the at least one filter cartridge.Type: GrantFiled: March 13, 2008Date of Patent: November 29, 2011Assignee: 3M Innovative Properties CompanyInventors: Howard D. Hutchinson, Mahesh Z. Patel
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Patent number: 8051989Abstract: A support structure of a filter element for supporting a filter material that is adapted to filter a fluid includes a first frame portion and a second frame portion. The first frame portion has a plurality of radially-extending fingers that are longitudinally spaced from one another. The first frame portion is disposed entirely on an unfiltered side of the filter material. A second frame portion has a pair of longitudinally-extending support surfaces that are disposed in a spaced, facing relationship with respect to one another. The second frame portion is disposed entirely on a filtered side of the filter material. The radially-extending fingers of the first frame portion and each of the longitudinally-extending support surfaces of the second frame portion support the filter material to define a first radial channel. The radially-extending fingers of the first frame portion space the longitudinally-extending support surfaces of the second frame portion apart from one another.Type: GrantFiled: May 11, 2009Date of Patent: November 8, 2011Assignee: Davco Technology, LLCInventor: Alfred Tondreau
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Patent number: 8042694Abstract: A filter media including a gathered sheet of porous filter material, is provided, together with an apparatus and method for fabricating such a gathered sheet of porous filter material. An improved filter apparatus incorporating such gathered porous filter material is also provided. By gathering the porous filter material, rather than forming convolutions through corrugating or pleating, as was done in the past, a desirable convoluted shape is achieved with little or no compression of the filter media.Type: GrantFiled: November 2, 2004Date of Patent: October 25, 2011Assignee: Baldwin Filters, Inc.Inventors: Greg Driml, Steven J. Merritt
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Publication number: 20110226691Abstract: A filter device is disclosed. The device includes at least one substantially flat filter media that may be encapsulated between non-permeable films. Some embodiments comprise ports for introducing a fluid to be filtered and for evacuating the filtered fluid. Various substrates may be employed therein in cooperation with the at least one filter media to enhance device performance. Also disclosed are various apparatuses configured to contain at least one filter device.Type: ApplicationFiled: December 16, 2008Publication date: September 22, 2011Inventor: Jeffrey A. Lucas
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Patent number: 8017011Abstract: A filter coalescer element for oil based industrial fuels includes a rigid, porous support tube, and a hydrophobic drainage layer covering the outer surface of the same. A single phase, dual function combination water coalescer and particle filter pleat block is positioned in the support tube, and is formed from a multilayer material having a first porous support layer, a synthetic microfiber layer, a synthetic fiber media layer and a second porous support layer. As the fluid passes through the pleat block, solid particles are physically filtered therefrom, and water is coalesced into droplets which pass from the pleats directly through the support tube and directly into the drainage layer, where the droplets grow into a size sufficient that they fall under gravity to the bottom of the element for collection.Type: GrantFiled: August 30, 2006Date of Patent: September 13, 2011Assignee: Kaydon Custom Filtration CorporationInventors: Jason A. Ellis, Ron J. Garrett
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Patent number: 8016123Abstract: A filter element has a first filter layer that has an active carbon layer, a top cover layer connected to the active carbon layer and a bottom cover layer connected to the active carbon layer opposite the top cover layer, wherein the first filter layer is folded to a first bellows. At least one second filter layer having an active carbon layer, a top cover layer connected to the active carbon layer and a bottom cover layer connected to the active carbon layer opposite the top cover layer is provided. The at least one second filter layer is folded to a second bellows. The first and second bellows are folded identically. The at least one second filter layer is arranged on the first filter layer in a positive-locking way by fold alignment of the first and second bellows to form a composite of filter layers.Type: GrantFiled: December 12, 2007Date of Patent: September 13, 2011Assignee: Mann & Hummel GmbHInventors: Angelika Gohle, Manfred Tumbrink
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Patent number: 7981184Abstract: A diamond patterned tubular pleated filter element is disclosed. Also disclosed is a filter cartridge that comprises a core element having an inner diameter, two ends and apertures formed therein, a diamond patterned tubular pleated filter element having an inner and an outer diameter positioned about the core element wherein the ratio of the outer diameter to the inner diameter of the diamond patterned tubular pleated filter element is about 1.5 to about 2.5, an open end cap, for transferring fluid into or out of the core element, positioned at one end of the core, and a closed end cap, for preventing fluid from exiting therefrom, positioned at the other end of the core, the closed end cap including structure for positioning the open end cap in filtration housing. Systems and methods for manufacturing the filter cartridge and the diamond patterned tubular pleated filter media itself are also disclosed.Type: GrantFiled: March 13, 2008Date of Patent: July 19, 2011Assignee: 3M Innovative Properties CompanyInventors: Mahesh Z. Patel, Jonathan C. Taylor, Gary W. Schukar
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Patent number: 7967152Abstract: An apparatus, system and method to facilitate fluid flow across a filter. The apparatus includes a filtration layer coupled to a support layer to form a composite filter. The support layer includes a hydroentangled cellulosic material forming a plurality of apertures. The apertures form channels to facilitate fluid flow across the filter while the support layer provides structural support to the filtration layer to enable lateral flow while preventing pleat deformation and collapse.Type: GrantFiled: September 12, 2006Date of Patent: June 28, 2011Assignee: Cummins Filtration IP, Inc.Inventors: Robert E. Muse, James O. Stuart
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Publication number: 20110138685Abstract: The web of the invention can comprise a super absorbent layer that can act as an moisture sensitive fuel shut-off valve, absorbent, adsorbant or reactant. The web of the invention can comprise a super absorbent fabric or layer made of a superabsorbent particle or fiber. The web can comprise a nanofiber layer having dispersed within the nanofiber layer a super absorbent particulate and optionally a second particulate material that can act as an absorbent, adsorbant or reactant. Fluid, gas or liquid, that flows through or by the assemblies of the invention can have any gas, liquid or solid material dispersed or dissolved in the fluid interact with the super absorbent particulate. If needed these materials can also react with, be absorbed by, or adsorbed onto, the active particulate within the nanofiber layer.Type: ApplicationFiled: February 14, 2011Publication date: June 16, 2011Applicant: Donaldson Company, Inc.Inventors: Veli E. Kalayci, James Doyle, Derek O. Jones, Brian Babcock, Mike J. Hebert, Philip Edward Johnson, Ketan C. Mehta
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Publication number: 20110127212Abstract: A crystalline polymer microporous membrane containing a crystalline polymer microporous film containing a crystalline polymer, and having an asymmetric pore structure; polyamine covering at least part of an exposed surface of the crystalline polymer microporous film; and a crosslinking agent, wherein the polyamine is crosslinked with assistance of the crosslinking agent.Type: ApplicationFiled: November 23, 2010Publication date: June 2, 2011Applicant: FUJIFILM CORPORATIONInventors: Kenichi ISHIZUKA, Nobuhiro NISHITA
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Publication number: 20110120938Abstract: A crystalline polymer microporous membrane containing a crystalline polymer microporous film containing a crystalline polymer, and having an asymmetric pore structure; fluorine alcohol covering at least part of an exposed surface of the crystalline polymer microporous film; and a crosslinking agent, wherein the fluorine alcohol is crosslinked with assistance of the crosslinking agent.Type: ApplicationFiled: November 24, 2010Publication date: May 26, 2011Applicant: FUJIFILM CORPORATIONInventors: Kenichi ISHIZUKA, Nobuhiro NISHITA
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Publication number: 20110114554Abstract: A composite filter media is formed from electrospun fine fibers and a multi-component substrate filter media comprising at least two different materials, one of which is a low melt polymeric material, wherein the low melt polymeric material acts as a bonding agent.Type: ApplicationFiled: July 13, 2009Publication date: May 19, 2011Applicant: CLARCOR Inc.Inventors: Lei Li, Thomas B. Green
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Publication number: 20110094958Abstract: A filter device for filtration of fluid has a filter element of a zigzag-folded filter medium that is flowed through in a radial direction of the filter element. An additive for functional change of fluid properties of the fluid to be filtered in the filter device is provided. The additive is applied circumferentially on the filter element onto outwardly positioned fold tips of the zigzag-folded filter medium of the filter element.Type: ApplicationFiled: April 2, 2010Publication date: April 28, 2011Applicant: MANN+HUMMEL GMBHInventor: Eugen Koch
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Patent number: 7931153Abstract: The invention relates to a method of making a solid-liquid filtration cloth, a solid-liquid filtration cloth, and a filter in which the solid-liquid filtration cloth is arranged. The filter cloth (7) is provided with yarns (13b) having a highly changing length and a long free run in the weave. When the length of the yarns (13b) is allowed to shorten significantly, a filtration portion (15) on the side of a surface (14) of the cloth obtains a corrugated shape, providing the cloth with a large filtering area.Type: GrantFiled: March 21, 2005Date of Patent: April 26, 2011Assignee: Tamfelt Filtration OyInventors: Antti Makinen, Eino Sorri, Heikki Rehakka, Aimo Rautanen
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Patent number: 7922006Abstract: A filter assembly is provided which includes an outer filter sleeve formed at least in part by a plurality of pleats, an inner filter sleeve formed at least in part by a plurality of pleats, wherein the inner and outer filter sleeves define a passage therebetween. An inlet cap is secured to a first end of the inner and outer filter sleeves and it has at least one inlet port communicating with the passage, and an end cap is secured to a second end of the inner and outer filter sleeves and it has an end surface closing the passage. Methods of forming such a filter assembly are also provided.Type: GrantFiled: June 29, 2007Date of Patent: April 12, 2011Assignee: 3M Innovative Properties CompanyInventors: Brian L. Fall, Thomas J. Hamlin, Mahesh Z. Patel, John L. Pulek, Aaron Spearin
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Patent number: 7901476Abstract: A peaky filter comprises a covering and a corresponding base, a supporting frame connected between the covering and the base, and a multifold filter covering the exterior of the supporting frame. The supporting frame includes plural transversely spaced first supports and plural connectors. Each support has a supporting rod and a plurality of longitudinally spaced supporting members connected to the supporting rod. Each supporting member has a first supporting leg and a second supporting leg extending radially and outwardly from the supporting rod. Each connector has a first connecting part and a second connecting part, which are used for respectively connecting one end of the first supporting leg of one support and one end of the second supporting leg of another adjacent support to connect elastically the plurality of transversely spaced supports, and consequently alter the size of the supporting frame and the filtering area of the filter.Type: GrantFiled: July 11, 2007Date of Patent: March 8, 2011Inventor: Ying-Shou Kao
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Patent number: 7896166Abstract: A compact filter element in which the end faces of a plurality of nonwoven filter layers (3) are fixedly integrated into a cover (4) and in which the oncoming flow of fluid to be filtered is deflected in the cover (4) in such a way that the fluid flows respectively into every second or alternating area between two adjacent nonwoven filter layers (3) and flows through the nonwoven filter layers (3) into the intervening spaces between the spaces between filter layers in to which it initially flows, from which intervening spaces it exits the filter element.Type: GrantFiled: May 11, 2005Date of Patent: March 1, 2011Assignee: Mann + Hummel GmbHInventors: Ralf Bauder, Karlheinz Muenkel
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Patent number: 7882961Abstract: One embodiment is a unique replaceable filter element. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the following description and drawings.Type: GrantFiled: July 31, 2007Date of Patent: February 8, 2011Assignee: Cummins Filtration IP, Inc.Inventors: Loick Menez, Kelly R. Schmitz, Gerard Malgorn, Ismail C. Bagci, Kevin C. South, Jeffrey B. Sharp
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Patent number: 7879125Abstract: A filter is provided by pleated filter media having a plurality of pleats defined by wall segments extending axially along an axial direction along an axis and extending transversely along a transverse direction between first and second sets of pleat tips at first and second sets of axially extending bend lines. The pleated filter media spans laterally along a lateral span along a lateral direction, with the wall segments being spaced from each other by lateral gaps. The pleats have a pleat depth along the transverse direction along the wall segments between the first and second sets of pleat tips. The pleat depth varies as the pleated filter media spans laterally along the lateral direction.Type: GrantFiled: December 8, 2009Date of Patent: February 1, 2011Assignee: Cummins Filtration IP Inc.Inventors: William C. Haberkamp, Jerald J. Moy, Eric A. Janikowski, Mark A. Terres, Scott P. Heckel
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Patent number: 7874431Abstract: A filter element for cleaning a fluid having a pleated filter medium designed for radial flow, to the outside of which a circumferential reinforcing thread is applied. The outside of the filter medium is divided into two axial sections, to which the reinforcing thread is applied in a plurality of circumferential thread windings, such that the axial distance between directly adjacent thread windings differs in the two sections.Type: GrantFiled: May 29, 2007Date of Patent: January 25, 2011Assignee: Mann + Hummel GmbHInventors: Jobst Eisengraeber-Pabst, Joachim-Paul Krieger, Alfons Schwinghammer, Johannes Lampert, Daniela Knodel, Frank Pflueger, Fritz Kupfer
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Publication number: 20110000846Abstract: A crystalline polymer microporous membrane, which contains: a microporous film formed of a crystalline polymer, which has a plurality of pores; and a hydrophilic polymer containing a hydroxyl group, which covers exposed surfaces of the microporous film, wherein the plurality of pores have a larger average pore diameter at a first surface of the film than the average pore diameter at a second surface of the film, and the average pore diameter of the pores continuously changes from the first surface to the second surface.Type: ApplicationFiled: July 2, 2010Publication date: January 6, 2011Applicant: FUJIFILM CorporationInventors: Kenichi ISHIZUKA, Nobuhiro Nishita
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Publication number: 20110000845Abstract: Herein are disclosed high loft spunbonded webs that are substantially free of crimped fibers and gap-formed fibers. The webs exhibit a solidity of from less than 8.0% to about 4.0% and a ratio of Effective Fiber Diameter to Actual Fiber Diameter of at least 1.40. Also disclosed are methods of making such webs.Type: ApplicationFiled: July 2, 2009Publication date: January 6, 2011Inventors: Andrew R. Fox, John D. Stelter, Michael R. Berrigan, Jonathan M. Lise
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Publication number: 20100224554Abstract: The invention relates to a corrugated or pleated flat material with a plurality of pleats or corrugations that run parallel to one another and successively define a pleat or corrugation peak and a pleat or corrugation valley, the peak and valley being connected to one another by way of a pleat or corrugation flank, wherein a fluid can flow through the flat material and the flat material has at least one deformable functional layer which rests on a supporting layer in the direction of throughflow of the fluid, said supporting layer comprising a supporting fabric, the functional layer allowing foreign substances to be removed from or delivered to the fluid. In order to develop the flat material in such a way that it has greater mechanical load-bearing capacity and lower resistance to throughflow, it is proposed according to the invention that the supporting fabric is deformable and comprises a twill weave.Type: ApplicationFiled: February 22, 2010Publication date: September 9, 2010Applicant: FSP Fluid Systems Partners Holding AGInventors: Andreas Schindelin, Wolfram Schadt