| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 055521000 | ZIGZAG, CORRUGATED, OR CONICAL | 21 |
| 20080302074 | Multiple Layer Filter Media - The invention provides a multiple layer filter media for removal of particles from a fluid stream. The multiple layer filter media may include a depth filtration layer, a membrane filtration layer and a support layer. Additional layers may be present. The membrane filtration layer may comprise expanded polytetrafluoroethylene (ePTFE). The various layers of the multiple layer filter media may be bonded together through a plurality of point bonds. The point bonding process may include simultaneously bonding multiple layers of the multiple layer filter media together in a single operation. The point bonds may be created using ultrasonic bonding. | 12-11-2008 |
| 20080314011 | FILTER ELEMENT INCLUDING A COMPOSITE FILTER MEDIA - A filter element includes, in an exemplary embodiment, a first end cap, a second end cap, and a composite filter media structure. The composite filter media structure includes a base substrate that includes a nonwoven synthetic fabric formed from a plurality of bicomponent synthetic fibers with a spunbond process, and having a bond area pattern having a plurality of substantially parallel discontinuous lines of bond area. The base substrate having a minimum filtration efficiency of about 50%, measured in accordance with ASHRAE 52.2-1999 test procedure. The composite filter media structure also includes a nanofiber layer deposited on one side of the base substrate by an by electro-blown spinning process. The composite filter media structure having a minimum filtration efficiency of about 75%, measured in accordance with ASHRAE 52.2-1999 test procedure. The composite media structure further includes a plurality of corrugations formed at a temperature of about 90° C. to about 140° C. | 12-25-2008 |
| 20090019825 | TACKY ALLERGEN TRAP AND FILTER MEDIUM, AND METHOD FOR CONTAINING ALLERGENS - The present invention provides a specific filtration media which includes a substrate having cellulose fibers, bicomponent fibers, adhesion fibers, binder, and pressure sensitive adhesive. Also contemplated are fire retardant filtration media containing bicomponent fibers and polyester fibers or acrylic fibers, and optionally cellulose fibers. The cellulose fibers of the invention are pretreated with flame retardant, providing a beneficial material for filtration purposes. | 01-22-2009 |
| 20090071114 | GAS TURBINE INLET AIR FILTRATION FILTER ELEMENT - A gas turbine air inlet filter element is described. The filter element includes a first end cap, a second end cap, and a filter media. The filter media includes a nonwoven synthetic fabric formed from a plurality of bicomponent synthetic fibers with a spunbond process, and having a bond area pattern that includes a plurality of substantially parallel discontinuous lines of bond area. The filter media has a minimum filtration efficiency of about 50%, measured in accordance with ASHRAE 52.2-1999 test procedure. The filter media also includes an embossing pattern or a plurality of corrugations. The embossing pattern or the corrugations are formed using opposing rollers at a temperature of about 90° C. to about 140° C. | 03-19-2009 |
| 20090120048 | Meltblown Filter Medium - Filter media, as well as related assemblies, systems and methods. Filter media may contain one or more layers formed of a meltblown material. | 05-14-2009 |
| 20090199527 | FANFOLD MEDIA DUST INHIBITOR - Fanfold and/or perforated media comprising a substrate including one or more friable coatings and an overcoat covering at least a portion of the one or more friable coatings proximate to one or more associated fanfolds and/or perforations is provided, wherein the overcoat mitigates spallation of the one or more friable coatings. Methods and apparatus for making the same are also disclosed. | 08-13-2009 |
| 20100050582 | PLEATED ALIGNED WEB FILTER - 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. | 03-04-2010 |
| 20100146921 | NONWOVEN FABRIC FOR FILTERS - This invention relates to a nonwoven fabric for filters, in which a melt blown nonwoven fabric formed of polybutylene terephthalate or polypropylene terephthalate fibers with an average fiber diameter of 1 to 8 μm and a spunbonded nonwoven fabric formed of polyester-based fibers with an average fiber diameter of 10 to 30 μcm are laminated for integration. | 06-17-2010 |
| 20100229516 | PLEATED FILTER WITH BIMODAL MONOLAYER MONOCOMPONENT MEDIA - A pleated filter is made from a monocomponent monolayer nonwoven web containing a bimodal mass fraction/fiber size mixture of intermingled larger size and smaller size continuous monocomponent polymeric fibers of the same polymeric composition. Rows of pleats are formed in the nonwoven web, and the pleated web is cut to a desired size and shape to provide a filter element containing a self-supporting porous monocomponent monolayer matrix of fibers bonded to one another at least some points of fiber intersection and having an average initial submicron efficiency of at least 15% at a 1.52 meters/sec face velocity. The filter element is deformation resistant without requiring stiffening layers, bicomponent fibers or other reinforcing measures in the filter media layer. | 09-16-2010 |
| 20100236206 | Manufacturing Process for a Filter Element and a Filter Element - In a method for manufacturing a filter element of layers of a flat material and a corrugated material resting against one another, wherein the corrugated material has peaks and valleys, an adhesive is applied onto the flat material or the peaks of the corrugated material in a direction substantially parallel to the peaks of the corrugated material to be glued onto the flat material. The peaks of the corrugated material are then glued onto the flat material. A filter element is thus produced of layers of a flat material and a corrugated material resting against one another, wherein the corrugated material has peaks and valleys, wherein the peaks of the corrugated material are glued onto the flat material by adhesive strips that extend substantially parallel to the peaks. | 09-23-2010 |
| 20110030325 | AIR FILTER - An air filter for a small internal combustion engine. The air filter includes a foam body having at least one flute which increases the outside area of the foam body. The fluid is formed in the foam body by compressing the foam body between two mold halves under pressure and heat until the foam body thermally sets with the formed flute. | 02-10-2011 |
| 20110120069 | METALLIC HONEYCOMB BODY WITH DEFINED CONNECTING POINTS AND MOTOR VEHICLE HAVING THE HONEYCOMB BODY - A honeycomb body includes at least a housing and a honeycomb structure with a multiplicity of channels. The honeycomb structure includes at least one at least partially structured metallic layer forming connecting points which fix the honeycomb structure. A cross section of the honeycomb structure has radial zones with connecting points. At least 1% and at most 20% of inner contact points of the at least one at least partially structured metallic layer in at least one of the zones forms a connecting point in the cross section. The channels have a different channel cross section in at least two of the radial zones. A motor vehicle having the honeycomb body is also provided. | 05-26-2011 |
| 20110173939 | CERAMIC FILTER ELEMENT AND METHOD OF MANUFACTURE - A method of manufacturing a ceramic diesel particle filter (DPF) and a DPF manufactured by the method, the DPF having a ceramic filter body ( | 07-21-2011 |
| 20120247076 | HONEYCOMB UNIT FOR EXHAUST EMISSION CONTROL - A metal honeycomb structure includes planar and corrugated sheets brazed together at first and second joining portions made of brazing materials applied to the corrugated sheet. The first and second joining portions are located proximate exhaust inlet and outlet of the honeycomb structure. The honeycomb further includes a joining strip joined to a metal outer tube. The joining strip is made of a brazing material applied to an inner wall of the metal outer tube. The second joining portion overlaps the joining strip and has a brazing length larger than a brazing length of the first joining portion which does not overlap the joining strip. | 10-04-2012 |
| 20120324851 | FILTER ELEMENT WITH GUIDE SHAFT - A Filter element for insertion into a housing of a ventilation unit or air conditioner, comprising a bellows with folds and a front side, which can face a wall of the housing, wherein the folds on the front side define fold cross-sectional surfaces, wherein to the front side at least one guiding slot is assigned and wherein a fold cross-sectional surface has a geometry in the area of a guiding slot that is different from the fold cross-sectional surface of a multiplicity of folds, is, in view of the task of providing an efficient filter element which, after problem-free manufacture is equipped with guiding slots into which guide pins can be inserted, characterized in that a multiplicity of regular fold walls is provided, wherein each two flanking walls flank the guiding slot. | 12-27-2012 |
| 20130042589 | FILTER INCLUDING A HOT MELT COATED CONTINUOUS SUBSTRATE - The invention is directed to a filter including filter media and a continuous substrate coated on at least one surface with a hot melt adhesive. The hot melt adhesive includes a polymer and alternately, at least one additional component selected from the group consisting of tackifying agent, wax and filler. | 02-21-2013 |
| 20140202123 | Filter Element, Device For Folding a Filter Medium Web and Process For Producing a Zigzag-Folded Filter Element - A filter element has a multi-layered filter medium web with several layers that is folded along folding lines. The filter medium web has at least one functional region in at least one section located between adjacent folding lines. The at least one functional region is a first embossment. The layers of the filter medium web are firmly bonded to each other along the first embossment. A device for folding a multi-layered filter medium web has an energy-introducing embossing unit that embosses the filter medium web fed by a feed unit to the embossing unit. A folding unit for folding the filter medium web along folding lines is provided. The energy-introducing embossing unit embosses and firmly bonds the layers of the filter medium web along at least one functional region in at least one section of the filter medium web located between adjacent folding lines. | 07-24-2014 |
| 20150121823 | WAVED FILTER MEDIA AND ELEMENTS - Various high performance, high efficiency filter media are provided that are cost effective and easy to manufacture. In particular, various filter media are provided having at least one layer with a waved configuration that results in an increased surface area, thereby enhancing various properties of the filter media. The filter media can be used to form a variety of filter elements for use in various applications. | 05-07-2015 |
| 20150360163 | PLEATED FILTER MEDIUM - Pleated filter medium and filters having pleated filter medium are provided. In one embodiment, a pleated filter medium is provided having pleats with rectangular sides and a length direction parallel to the fold between the two sides of a pleat. The pleated filter medium has several rows of distance elements extending in a cross direction relative to the folds in the pleated filter medium. The rows are distanced from each other along a length direction, whereby each row of distance elements is constituted of a line of glue elements distanced from each other and applied to a side of the filter medium. Rows of glue elements 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. | 12-17-2015 |
| 20160016100 | Filter Element for Filtering Media - A filter element for filtering media with a pleated filter medium is described. Each pleat ( | 01-21-2016 |
| 20160051917 | FIBROUS NONWOVEN AND METHOD FOR THE PRODUCTION THEREOF - The invention relates to a fibrous nonwoven, in particular for a filter medium, having a first layer, wherein at least one single-piece fiber strand of said first layer has a first fiber portion and a second fiber portion in the longitudinal direction, and wherein the fiber strand has a thickening substantially in said second fiber portion. | 02-25-2016 |
