| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 055488000 | Variation in shape or size | 15 |
| 20080264019 | AIR FILTRATION SYSTEM AND METHOD - An air filtration system and method for removably attaching a filter element to portable air circulation devices and building HVAC air-intakes. One such system provides a filter portion having a circular outer periphery, an inner periphery a slit running from the outer periphery to the inner periphery that creates a first and second end of the filter portion, and a plurality of fastening mechanisms. One method includes manufacturing a plurality of air-permeable filter sheets, determining a shape of a portable electric fan that includes a fan cage, a support stand, and a motor casing, measuring a size of an inlet side of the fan cage and a size of the motor casing, cutting the plurality of filter sheets such that a plurality of filter portions are created, and attaching a plurality of fastening mechanisms to each one of the plurality of filter portions. | 10-30-2008 |
| 20100192530 | FLUTED FILTER APPARATUS - A filter element and filter apparatus, and a method for fabricating a filter element, include a filter element having alternating layers of a face sheet material and a convoluted filter material, with the alternating layers forming substantially longitudinally oriented flutes that extend axially along, or past, a radially acting seal, into previously unused portions of the cavity of a filter housing. In some embodiments, structures such as struts extending partially across an outlet end of the filter element, or a rigid web formed by a layer of resin extending axially a potted length into pome of the flutes from the outlet end resist axially oriented pressure forces on the alternating layers. | 08-05-2010 |
| 20100307119 | MULTILAYER NANOFIBER FILTER - A method of making a multilayer filter and the multilayer filter made by the method. The method includes generally two steps. The first step is to coat a layer of nanofibers on a single side or both sides of a substrate medium to obtain a composite filter medium, and the second step is to fold the composite filter medium in a serpentine fashion to form a multilayer filter. The second step may alternatively be accomplished by stacking up a number of sheets of the composite filter medium to form a multilayer filter having a structure of two layers of nanofibers being sandwiched between two layers of said substrate medium. The resulting multilayer filter produced by either method contains at least one structural unit which has two layers of nanofibers being sandwiched between two layers of the substrate medium. | 12-09-2010 |
| 20120017554 | HONEYCOMB FILTER AND METHOD FOR MANUFACTURING THE SAME - In honeycomb filter | 01-26-2012 |
| 20120017555 | HONEYCOMB FILTER AND METHOD FOR MANUFACTURING THE SAME - In honeycomb filter | 01-26-2012 |
| 20120023878 | Apparatus for Treating Crankcase Gases from Engines - Apparatus is provided for removing oil from crankcase gases flowing from an internal combustion engine. The apparatus includes filtration particles, contained within an outer case, that collect oil particles and allow drainage of the oil into an accumulator. The apparatus includes a separation chamber which initially causes the oil to separate from the crankcase gases. | 02-02-2012 |
| 20120279186 | Compact Filter, Method for Producing a Compact Filter, and Filter Medium - A compact filter has a compact filter element for exchangeable use in a filter housing and the compact filter element has a filter body of a web-shaped filter medium. The web-shaped filter medium has at least one flat filter medium web and one corrugated filter medium web that are placed onto each other and at least partially connected to each other by ultrasonic welding. At least one of the flat and corrugated filter medium webs is a composite filter medium web of at least two components, wherein at least one component is a synthetic material and one component is a non-synthetic material. The non-synthetic material is a plant-derived material and forms a support of the composite filter medium web and the synthetic material is a synthetic layer applied on the support. | 11-08-2012 |
| 20130305671 | FILTER MEDIUM - The present invention relates to a method for the manufacture of a multilayered filter medium whose air permeability is at least 500 l/m | 11-21-2013 |
| 20140026527 | AIR FILTER ARRANGEMENT; ASSEMBLY; AND, METHODS - An air filter media construction or arrangement is disclosed. The air filter media construction or arrangement includes strips of media comprising corrugated sheets secured to facing sheets and forming inlet and outlet flutes secured to one. A preferred projection/receiver arrangement is described. Methods of assembly and use are also provided. | 01-30-2014 |
| 20140260139 | RECTANGULAR STACKED FLUTED FILTER CARTRIDGE - A fluted filter cartridge is provided. The fluted filter cartridge includes filter media including an inlet flow face and an outlet flow face. The inlet flow face and the outlet flow face are generally parallel. The filter cartridge includes a frame defining a central opening. The filter media is coupled to the frame such that fluid to be filtered may be directed through the central opening to the inlet flow face of the filter media. The frame includes a top surface. The inlet flow face of the filter media is located below the top surface of the frame. | 09-18-2014 |
| 20140331627 | Filter Element and Method for Producing a Filter Element - A filter element has a filter body of at least one layer of a flat web-shaped filter medium, separating a raw side from a clean side of the filter element. A hot melt system is provided and the filter body is glued together by the hot melt system. The hot melt system has a hot melt mixture that is made up of 15-85% by weight of a first hot melt that is polyester-based and 15-85% by weight of a second hot melt that is polyamide-based. The first hot melt and the second hot melt together amount to 100% by weight of the hot melt mixture. The hot melt mixture constitutes a proportion of more than 75% by weight of the hot melt system. The remainder of the hot melt system is made up of fillers, pigments, tackiness-imparting resins, and hot melts based on a polycondensate. | 11-13-2014 |
| 20150316009 | 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 a longitudinal axis, for supporting the seal member. The seal support frame also preferably includes a first end thereof including the annular extension, and a second end thereof spaced from the first end thereof along the longitudinal axis, with the first and second ends of the seal support frame joined by a hub of the outer peripheral sidewall of the seal support frame to define a cavity within the seal support frame for receiving the filter pack. The first and second ends of the seal support frame, and the filter pack are preferably joined and sealed to one another by a single bead of adhesive. | 11-05-2015 |
| 20150336041 | Segmented Filter Assembly - A filter assembly for mounting to an opening in a tube sheet of a filter system is provided. The filter assembly includes a plurality of filter elements and a mounting structure. Each filter element includes an extension of filter media, a first coupling portion, and a second coupling portion. The first and second coupling portions are attached to the filter media. The first and second coupling portions are connectable to one another to secure a first one of the plurality of filter elements to a second one of the plurality of filter elements such that fluid communication between the first and second filter elements is established when connected. The mounting structure is sized and configured to mount to the tube sheet adjacent the opening. The mounting structure includes a mounting structure coupling portion being connectable to the first coupling portions of the filter elements. | 11-26-2015 |
| 20160052371 | AIR CLEANER ASSEMBLY - Disclosed are various exemplary embodiments of an air cleaner assembly for a machine. The air cleaner assembly may include a filter housing and a filter element. The filter housing may include a mating surface extending in a first plane and defining a filter opening thereon. The filter housing also includes a filter engaging member associated with the mating surface. The filter element may include a filter frame extending generally in a second plane and defining an opening for receiving a filter medium. The filter element may also include a sealing member disposed in the filter frame around the opening and configured to seal around the opening when the filter frame is brought into contact with the mating surface. The filter element may further include a blade extending from the filter frame and configured to engage with the filter engaging member. In some exemplary embodiments, the filter engaging member and the blade may be configured such that, when the blade is engaged with the filter engaging member, the filter frame is rotatable about a tip of the blade. | 02-25-2016 |
| 20160114275 | AIR FILTER WITH IMPROVED PERFORMANCE OR POSITIONING - Radial seal filter assemblies and filter cartridges are described. According to various embodiments, a filter includes a housing that extends along an axis between first and second axial ends. A primary filter element is disposed in the housing and axially extends between first and second axial ends that respectively are adjacent the first and second axial ends of the housing, the primary filter element has a hollow interior and a first axial length. A secondary filter element is disposed in the hollow interior of the primary filter element, the secondary filter element having a second axial length, the second axial length being longer than the first axial length of the primary filter element. The filter further includes an end cap disposed on the second axial end of the primary filter element. | 04-28-2016 |
