Patent application number | Description | Published |
20080224343 | OPEN CERAMIC MEDIA STRUCTURE AND METHOD OF MANUFACTURING - A method of producing a porous ceramic media structure is provided. The method comprises preparing an aqueous solution that comprises ceramic fibers in a liquid carrier, adding a pore-forming, fibrous material to the aqueous solution, drying the aqueous solution to form a ceramic web, and removing the fibrous material from the ceramic web to thereby increase the porosity of the ceramic web. | 09-18-2008 |
20090266040 | DIESEL PARTICULATE FILTER ASSEMBLY - A diesel particulate filter assembly configured to be incorporated into an exhaust treatment device, the diesel filter assembly comprising: a ceramic media disposed about a center support defining an outlet flow path; a pair of end supports secured to the center support and the ceramic media; and an end cone secured to one of the pair of end supports. | 10-29-2009 |
20100326027 | FILTER AND METHOD OF MAKING - A filter formed by the following steps is provided. The steps including: forming a plurality of sheets of filter media, each sheet of filter media having an inlet end and an outlet end, wherein each of the plurality of sheets of filter media are formed by the steps of: thermoforming a first layer of filtration media to have a plurality of channels, the first layer having an upper surface and a lower surface; sonically welding a portion of a second layer of filtration media to the first layer of filtration media after the first layer is thermoformed to form the sheet of filtration media, wherein at least one edge of the first layer is not sonically welded to at least one edge of the second layer, wherein the sheet of filtration media has a plurality of fluid channels each having an inlet opening at the at least one edge of the first layer and the second layer and a sealed end at another end of the sheet; and securing the plurality of sheets together by applying a strip of adhesive between each upper surface of each first layer facing the second layer of another sheet of filter media stacked upon the upper surface of the first layer of the filtration media. | 12-30-2010 |
20110291314 | CAST FORMED FILTER AND METHOD OF MAKING THE SAME - A cast formed filter and a method for making the filter is provided. The method includes disposing a liquid filter media in a cavity of a molding tool, the molding tool having a plurality of features configured so that the filter media is formed about the plurality of features to form a plurality of inlet openings and a plurality of outlet openings in the filter media; applying at least one of pressure and heat to the filter media disposed in the molding tool to cure the liquid filter media and obtain a cast formed filter media defined by the cavity of the molding tool; and removing the cast formed filter media from the molding tool, wherein the cast formed filter media maintains a configuration having a three-dimensional periphery and the plurality of inlet openings extend from an inlet end of the cast filter media into the cast formed filter media so a first portion of the cast formed filter media is disposed between each of the plurality of inlet openings and an outlet end, and the plurality of outlet openings extend from the outlet end into the cast formed cast filter media so a second portion of the cast formed filter media is disposed between each of the plurality of outlet openings and the inlet end. | 12-01-2011 |
20120060456 | FILTER AND METHOD OF MAKING - A filter is disclosed herein, the filter having: a plurality of sheets of filter media, each sheet of filter media having an inlet end and an outlet end, wherein each of the plurality of sheets of filter media has a first layer of filtration media thermoformed to have a plurality of channels, the first layer having an upper surface and a lower surface; a second layer of filtration media sonically welded to a portion of to the first layer of filtration media after the first layer is formed with the plurality of channels, wherein at least one edge of the first layer is not sonically welded to at least one edge of the second layer, and wherein the sheet of filtration media has a plurality of fluid channels each having an inlet opening at the at least one edge of the first layer and the second layer and a sealed end at another end of the sheet; wherein each of the plurality of sheets of filter media are secured together by a strip of adhesive located between each upper surface of each first layer facing the second layer of another sheet of filter media stacked upon the upper surface of the first layer of the filtration media; and wherein each of the plurality of fluid channels are also in fluid communication with at least one other of the plurality of fluid channels through an opening located between the at least one edge of the first layer and the second layer and the sealed end. | 03-15-2012 |
Patent application number | Description | Published |
20080196370 | PLEATED DIESEL PARTICULATE FILTER ASSEMBLY - A filter assembly is configured to be incorporated into an exhaust treatment device. The filter assembly comprises a frame, a filter media element, and a plurality of dividers supporting the filter media element within the frame. The frame has a first end and a second end defining a frame length therebetween. The filter media element is disposed within the frame and extends generally perpendicular to the frame length as a series of pleated contours. The plurality of dividers includes a first divider and a second divider. The first divider is disposed adjacent to the filter media element at the first end of the frame. The second divider is disposed adjacent to the filter media element at the second end of the frame. | 08-21-2008 |
20080209868 | DIESEL PARTICULATE FILTER ASSEMBLY - A filter assembly is disclosed herein the filter assembly comprising: a plurality of stackable elements each comprising a frame defining a perimeter surrounding a filter media disposed within the frame, the filter media being configured for use as a diesel particulate filter and capable of being regenerated at a temperature greater than 350 degrees Celsius, each frame being configured to have either a first feature on a first surface of the frame or a second feature on a second surface of the frame or both a first feature on a first surface of the frame and a second feature on a second surface of the frame, the first feature being configured to mate with the second feature; and the first surface of each of the plurality of stackable elements further comprises an inlet opening on one end of the frame configured to align with an inlet opening on the second surface of each of the plurality of stackable elements such that a plurality of openings are defined on only one side of the filter assembly, the plurality of openings providing fluid communication to the filter media. | 09-04-2008 |
20080209875 | Radial Seal Filter With Open End Pleats - A filter, comprising: a filter element comprising pleated filter media having a plurality of pleats configured into a closed loop of filter media, the filter element having an outer perimeter defined by a plurality of outer pleat tips, and an inner perimeter defined by a plurality of inner pleat tips, the plurality of inner pleat tips defining an inner chamber extending through the filter element; a cap disposed on a first end of the filter element the cap being configured to seal a first opening of the first end of the filter; a first plurality of open end pleats positioned between an edge of the cap and the outer perimeter of the filter element, the first plurality of open end pleats defining a first fluid path through the filter media into the inner chamber; a sealing ring disposed on a second end of the filter element the sealing ring being configured to provide an inlet opening providing fluid communication to the inner chamber; and a second plurality of open end pleats positioned between an edge of the sealing ring and the outer perimeter of the filter element, the second plurality of open end pleats defining a second fluid path through the filter media into the inner chamber. | 09-04-2008 |