Class / Patent application number | Description | Number of patent applications / Date published |
055501000 | With additional support means not positively engaged or joined to media (e.g., across face of filter) | 16 |
20080229723 | Forced Air Duct End Filter Assembly - A filter assembly for mounting over an opening at an end of a forced air system duct, such as a cold air return. The filter assembly is designed to replace an existing louvered grill covering. The filter assembly is dimensioned which substantially retains the shape and appearance of the conventional duct grill being replaced. The filter assembly includes a filter frame having a perforated back wall, horizontal and vertical walls extending forwardly from the periphery of the perforated back wall defining an open front end and a filter receiving space between the perforated back wall and the open end. A rectangular grill having a peripheral flange extending rearwardly therefrom. The rectangular filter frame being received interiorly of the peripheral flange. A filter element being removably seated within the filter receiving space and being sandwiched between the perforated back wall and the grill causing the entire surface of the filter element to substantially contact the perforated back wall. | 09-25-2008 |
20090094952 | FILTER ELEMENTS FOR CIRCULATING AIR SYSTEMS - An improvement to a reusable filtering assembly used in circulating air systems for residential or commercial heating and air conditioning systems. A series of layers consisting of filtering materials disposed between two framing units are comprised of the following: expanded metal lath, a layer of small fiber material, a layer of large fiber material, a layer of small crimp wire cloth, a layer of small fiber material, and a last layer of expanded metal lath. The present invention further comprises a stage loaded series of layers wherein the direction of air flow is from the first layer to the sixth layer comprising: Expanded Metal Lath, Small Fiber, Large Fiber, Small Crimp Wire Cloth, Small Fiber, and Expanded Metal Lath. | 04-16-2009 |
20090133371 | AIR FILTER HAVING AN AIR FILTER HOUSING, USE OF AN AIR FILTER, METHOD FOR DESIGNING AN AIR FILTER, AND METHOD FOR OPERATING AN AIR FILTER - An air filter is provided that includes, but is not limited to an air filter housing, which encloses an air filter chamber having an ambient air volume and a filtered air volume separated from the ambient air volume by a filter device. At least one interior side of the air filter housing enclosing the ambient air volume has ribs. The ambient air volume has air flowing through it in a flow direction operation of the air filter and sections of the ribs are situated parallel to this flow direction of the air and curved. | 05-28-2009 |
20100064646 | ELLIPTICAL SEAL INTERFACE FOR FILTER ASSEMBLY - A filter assembly is described that includes a unique seal configuration between a filter and a housing. The filter has a filter media that allows fluid to be filtered therethrough, and has an endplate with an opening that allows fluid to flow into or out of the filter media. The endplate has a main surface with an elliptical spud protruding outward from the main surface and surrounding the opening. An oval seal is disposed about an outer surface of the elliptical spud. The housing is releasably connected to the filter, and has a mounting component. The mounting component has an elliptical boss that mates with the elliptical spud and seals against the oval seal. | 03-18-2010 |
20100313534 | Support system for exhaust emission control elements - A device for securing an emission control element by a gastight seal within an exhaust system, and a device to secure loose hardware within an exhaust system. The device for securing the emission control element includes a structure that surrounds the emission control element and a structure that pushes against the emission control element. The structure that pushes against the emission control element uses a system of angled grooves and pushing means to create a force that holds the emission control element in place. The device to secure loose hardware includes a length of wire, the end of which is formed into a loop around the body of the hardware. | 12-16-2010 |
20110126500 | FILTER MOUNTS FOR A PORTABLE FAN AND METHODS FOR MOUNTING A FILTER TO A PORTABLE FAN - A filter frame is removably attachable to a box fan. The filter frame is adapted for receiving a standard HVAC-style filter for removing contaminants from air flow induced by the fan. In this manner, a cost-effective means for filtering a flow of air is provided for residential and commercial settings. The filter frame is adaptable to a variety of standard box fan types of different styles and dimensions. The frame is configured to accommodate standard filters, such as those readily available from retail hardware stores and home centers. | 06-02-2011 |
20130247526 | AIR CLEANER HAVING ANTI-ROTATIONAL ARRANGEMENTS AND METHODS - An air cleaner having a housing body and a removable cover and a filter element, in which the cover and the filter element rotationally interfere with each other by engagement between an inside surface of the cover and an outer radial periphery of the filter element. A filter element includes a pair of end caps, filter media, and an outer wall on the end cap circumscribing the filter media, in which the outer wall is non-circular. A method of installing a filter element into a housing includes orienting a cover over an element and a housing body by engaging an inside surface of the cover and an outer radial periphery of the filter element to rotationally interfere with each other. | 09-26-2013 |
20140182254 | FILTER DEVICE AND FILTRATION SYSTEM COMPRISED THEREOF - This disclosure proposes a new structure for pre-filter devices, and filtration systems in general, that facilitates tasks necessary to maintain performance of pre-filter banks in the filtration system. Embodiments of this structure allow the pre-filter devices to translate on corresponding structural members that make up the supporting structure of the pre-filter bank. When in position, the proposed pre-filter devices can mate with adjacent pre-filter devices to form a substantially unitary structure that prohibits fluid from flowing unfiltered to areas downstream of the filtration system. | 07-03-2014 |
20140190138 | FILTER ASSEMBLY - A filter assembly is for dust removal in various commercial applications. The filter assembly includes a cylindrical cage assembly defining a circular opening at one extremity thereof, a filter media removably insertable within the cage assembly through the circular opening and a radial support element pressfittedly and removably received within the cage assembly providing radial support between the filter media and the cage assembly. The filter assembly has several recyclable components and is adaptable to different operational lengths and operating temperatures, while also offering a longer operational life. | 07-10-2014 |
20140196423 | Tactile Air Filter Media - An apparatus and method for a tactile air filter including a filter media composed primarily of glass fibers having a softening finish applied thereto. | 07-17-2014 |
20140215981 | AIR PASSAGE DEVICE - An air passage device for installation into a mounting opening in a wall of a housing for components generating waste heat, such as a switching box, has a base housing with a fan support for a fan and a design cover with a fan grid having sheet elements. At least one swivellable sheet element or at least one flexible, tongue-shaped side wall section, separated from the remaining side wall surface of the side walls of the design cover by slits running transversely to the longitudinal direction of the side wall, is formed in the region of the upper side wall of the design cover facing away from the swivel axis for swivelling the design cover. The sheet element and the tongue-shaped side wall section are constructed as a detachable and lockable detent connection, able to be actuated by a finger, between the design cover and the base housing. | 08-07-2014 |
20140260143 | PLATE FILTER ELEMENT - A plate filter element for a filter device may include a filter body having a peripheral edge, which has at least two rectilinear wall sections, which border each other and forming a corner. A seal may be attached to the filter body and be arranged peripherally along the edge. The seal may have an inner contour running around the inside and an outer contour running around the outside. The inner contour may run parallel to the rectilinear edge sections into the respective corner. The outer contour may run parallel to the rectilinear edge sections to a corner region, which contains the respective corner and end sections of the rectilinear edge sections border the respective corner regions. The outer contour may form a bulge, which curves outwards in relation to rectilinear sections of the outer contour, in the corner region. | 09-18-2014 |
20140298764 | INDUSTRIAL COATING APPLICATION FILTER WITH PLEATED SUPPORT - A filter for industrial coating filtration systems. The filter has a housing made up of a peripheral wall extending around the periphery. The housing is preferably made of a suitably rigid material. A preferably rigid support backing is mounted within the housing. The support backing has a planar configuration with openings formed through it so that air can flow through without substantial resistance. The preferably planar sheet of which the support backing is made is pleated. The pleated support backing defines a series of panels, each of which is angled to a next adjacent panel. Filtration media is mounted to the support backing, end caps are attached to the ends of the support backing to maintain the pleated configuration, and the assembly is inserted into the housing, which can have end flaps to seal using tape or adhesive. | 10-09-2014 |
20150047306 | FILTER SYSTEM - A filter assembly for use with a vacuum apparatus and a hair clipper is disclosed. The assembly includes a top piece, a bottom piece, and a filter member. The top piece is formed having a generally circular perimeter with an inlet aperture located on the perimeter such that the inlet aperture is adapted for tangential acceptance of a vacuum hose. The specific arrangement of components, including the tangential position of the aperture, creates a hair collecting vortex within the assembly when a vacuum source is attached and activated. | 02-19-2015 |
20160025110 | FILTER MOUNTS FOR A PORTABLE FAN AND METHODS FOR MOUNTING A FILTER TO A PORTABLE FAN - A filter frame is removably attachable to a box fan. The filter frame is adapted for receiving a standard HVAC-style filter for removing contaminants from air flow induced by the fan. In this manner, a cost-effective means for filtering a flow of air is provided for residential and commercial settings. The filter frame is adaptable to a variety of standard box fan types of different styles and dimensions. The frame is configured to accommodate standard filters, such as those readily available from retail hardware stores and home centers. | 01-28-2016 |
20170232376 | FILTERING SYSTEM INCLUDING IMPERMEABLE EXTENSION FOR FILTERING ELEMENT | 08-17-2017 |