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| Number | Title | Issue Date |
| 7332012 | Multi-stage filtering apparatus A filtering apparatus having a filter retrieval apparatus, an integrated jib, and a clamping assembly for providing a seal between a filter and a cabinet. ... | 02/19/2008 |
| 7276100 | Air purifier An air purifying device is provided for removing airborne particles. The device includes a housing including an air inlet and an air outlet. A fan is positioned within the housing for drawing air into the housing through the air inlet and expelling air through the a... | 10/02/2007 |
| 7186284 | Filter mounting system A filter mounting system for use in a baghouse having a tubesheet with a plurality of openings. The filter mounting system includes filter media and a tubular mounting collar attached to the filter media to mount the filter media relative to the tubesheet. The filte... | 03/06/2007 |
| 7175030 | High capacity depth filter bag A filter element for hydrocarbon emissions in, e.g., marine diesel engine applications, comprises a wound mat received within a filter bag. An annular end cap is bonded to one end of the wound mat, and is sealed around its periphery to a bag ring at the open end of ... | 02/13/2007 |
| 7172693 | Quick change filter and bracket with key system and universal key option A bracket system holds a filter(s) in quick-attach and quick-release fashion. Brackets are combined in modular fashion, with conduit between the brackets, to create a “bank” of filters easily changed in number, arrangement, and flow scheme. Top brackets and bott... | 02/06/2007 |
| 7166141 | Vacuum cleaner A vacuum cleaner is disclosed which comprises a body, fan means within the body for creating an airflow through the cleaner and a separation unit mounted to the body for separating dirt and dust from the airflow. The separation unit comprises a cyclone separator and... | 01/23/2007 |
| 7041147 | Air purifier An air purifying device is provided for removing airborne particles. The device includes a housing including an air inlet and an air outlet. A fan is positioned within the housing for drawing air into the housing through the air inlet and expelling air through the a... | 05/09/2006 |
| 7014685 | Filter element and mounting method The present invention relates to an apparatus for filtering a gas or liquid stream such as a natural gas stream. The apparatus includes a closed vessel having a longitudinally extending length, an initially open interior, an input port at one extent and an output po... | 03/21/2006 |
| 7014674 | Biological safety cabinet A biological safety cabinet includes a work chamber having a contaminated air discharge opening, a fan enclosure above the work chamber, a conduit extending from the chamber air outlet to the top of the fan enclosure, a first HEPA filter in the top of the fan enclos... | 03/21/2006 |
| 6977006 | Keyed system for connection of filter cartridge to filter holder Embodiments of a key system for filters and their connecting heads/holders are shown. The filter cartridge and its holder each have a keyed surface, one being a protruding “key” and one being a recessed “lock”. Cooperation of these keyed surfaces is required... | 12/20/2005 |
| 6974491 | Cartridge locking device and method A cartridge locking device (10) for holding a filter media (14) in a plenum (12) in which an actuator (112) movable between a first position and a second position connects to a lever member (122) inwardly of the plenum (12) ... | 12/13/2005 |
| 6942710 | Duct end filter apparatus The present invention is an improved duct end filtering device which increases the efficiency of a duct-end filter and which increases the ease with which filters can be removed and replaced. ... | 09/13/2005 |
| 6896712 | Lateral-flow biohazard safety enclosure A biohazard safety enclosure or workstation particularly adapted for enclosing automated instrumentation includes a chamber defined by front, back, top, bottom, and opposed end walls; a HEPA filter across an air inlet opening into the chamber, and an airflow means t... | 05/24/2005 |
| 6866695 | Filter assembly for air purifier An air purifying device is provided for removing airborne particles. The device includes a housing including an air inlet and an air outlet. A fan is positioned within the housing for drawing air into the housing through the air inlet and expelling air through the a... | 03/15/2005 |
| 6858052 | Filter cartridge mounting structure A filter cartridge for use in a baghouse having a tubesheet with a plurality of opening. A flexible snapband is biased towards engagement with a surface defining one of the openings in the tubesheet and is adapted to receive a portion of the filter cartridge. The sn... | 02/22/2005 |
| 6843821 | Filtering candles comprising a sintered filtering tube The aim of the invention is to provide filtering candles (1) comprising a sintered filtering tube (2) and a collar (3) which is connected thereto, and having an increased shelf life and improved resistance values. To this end, the collar (3 | 01/18/2005 |
| 6797025 | Conically shaped air-oil separator A liquid reservoir tank assembly includes a gas-liquid separator, such as an air-oil separator. A tank body has an open end, a portion of the tank body forming a liquid separation chamber, another portion of the tank body forming a liquid reservoir. A tank cover cov... | 09/28/2004 |
| 6797028 | “Push-on” self attach adaptive filter There is provided in a standard ceiling system, having suspension rails or elements a movable air delivery diffuser resting on the suspension elements and a filter panel inserted into and retained between the suspension elements and the air delivery diffuser. The fi... | 09/28/2004 |
| 6752859 | Air cleaner assembly for reducing pollutants from being discharged into the atmosphere An air cleaner assembly includes an adsorber member disposed in a fluid passageway of the air cleaner assembly for eliminating pollutants from being discharged into the atmosphere contained within the air cleaner assembly. The adsorber member comprises a support and... | 06/22/2004 |
| 6716265 | Air treatment apparatus with an interchangeable vent cover An air treatment apparatus has a housing and a vent cover. The housing has a treatment element, at least one entrance and a fan secured in the hollow housing and facing the entrance. The vent cover is detachably and replaceably attached to the housing. At least one ... | 04/06/2004 |
| 6695891 | Keyed system for connection of filter cartridge to filter holder Embodiments of a key system for filters and their connecting heads/holders are shown. The filter cartridge and its holder each have a keyed surface, one being a protruding "key" and one being a recessed "lock". Cooperation of these keyed surfaces is requi... | 02/24/2004 |
| 6692551 | Air cleaner assembly and process An air cleaner assembly for an internal combustion engine and process for eliminating fuel emissions from passing into the atmosphere. The air cleaner assembly includes a housing including a filter element situated therein, an outlet for allowing filtered... | 02/17/2004 |
| 6663685 | Filter assembly A filter assembly for collecting material that is entrained in a gas stream includes a housing for a filter element. The housing has first and second ends with an inlet and an outlet at the first end for the gas that is to be filtered, and a support surfa... | 12/16/2003 |
| 6645266 | Air purifier An air purifier has a housing, a motor, a fan, a filtering net, and a power plug. The motor and the fan are positioned in the housing. The filtering net is joined to the front of the housing. The power plug includes a rotatable member and a pair of conduc... | 11/11/2003 |
| 6626973 | Filter mounting device for vacuum cleaner The present invention relates to a structure for confirming as to whether a filter is mounted into a vacuum cleaner. The structure for a vacuum cleaner according to the present invention comprises a cover including a discharging port for discharging air f... | 09/30/2003 |
| 6623540 | Filter apparatus for HVAC system A filter apparatus for deployment over a duct end in a forced air heating/ventilating/air conditioning system is described. The apparatus has been specifically designed for easy installation, and also for convenient cleaning and maintenance by occupants o... | 09/23/2003 |
| 6511522 | Quick connect, stabilized clean room filter support system A clean room filter support system has a filter unit comprising a perimetrical frame having four sides of a predetermined vertical extent with upper and lower edges and filtering material held within the frame for air flow between a first plane incorporat... | 01/28/2003 |
| 6468322 | Filter holder assembly having extended collar spacer ring A filter holder assembly is provided that utilizes a fail-safe regenerator unit with an annular spacer ring having an extended metal collar for containment and positioning of a compliant ceramic gasket used in the assembly. The filter holder assembly is d... | 10/22/2002 |
| 6461396 | Air purifier An air purifying device is provided for removing airborne particles. The device includes a housing including an air inlet and an air outlet. A fan is positioned within the housing for drawing air into the housing through the air inlet and expelling air th... | 10/08/2002 |
| 6451079 | Pocket filter having inner frames mounted within an outer frame The pocket filter exhibits an outer frame made of plastics material and several adjacent filter elements arranged in the outer frame. The outer frame is composed of opposing limb profiles, a base profile and a closing profile which each have an essentiall... | 09/17/2002 |
| 6428593 | Filter holder gasket assembly for enhanced securement of candle filters A filter assembly for holding a candle filter element within a hot gas cleanup system pressure vessel is disclosed. The filter assembly includes at least one bottom ring gasket positioned in an annular groove formed in a portion of a metal bottom clamp fo... | 08/06/2002 |
| 6425932 | Air purifier An air purifying device is provided for removing airborne particles. The device includes a housing including an air inlet and an air outlet. A fan is positioned within the housing for drawing air into the housing through the air inlet and expelling air th... | 07/30/2002 |
| 6409786 | Filter assembly A filter assembly for collecting material that is entrained in a gas stream includes a housing having inlet and outlet ports for the gas that is to be filtered. The housing includes an end cap in which at least one of the ports is provided, and a body sec... | 06/25/2002 |
| 6398838 | Filter cartridge arrangement A filter cartridge arrangement, including a filter cartridge that is connected on its face with a snap-on ring, forming a seal, where the snap-on ring can be snapped into an opening in a filter housing and where the snap-on ring demonstrates a radial flan... | 06/04/2002 |
| 6391074 | Grease stopper A grease stopper assembly is provided which captures and contains the effluent discharged from the roof vents of commercial cooking facilities. The assembly includes a plurality of two or four hanger assemblies attached to the vent duct curbing lip. A fil... | 05/21/2002 |
| 6379410 | Air filter assembly for motor vehicles An air filter assembly typically for use with truck-trailer cobinations, has separable body and bottom sections, and an elongted threaded member rotatable for threaded securement between the body and bottom sections and for disengagement of the bottom sec... | 04/30/2002 |
| 6375698 | Long filter assembly with connection device A filter assembly (24) includes a first filter portion (80) with a first attachment (100) adapted to attach to a tubesheet (44) to support at least a portion of the first filter portion in a second plenum (40) and to permit fluid communication between the... | 04/23/2002 |
| 6368388 | Filter construction apparatus and method A filter construction allowing easy access to the filter is provided. The filter construction includes a yoke having a keeper, a filter supported by the yoke wherein the filter defines an opening, and a cover. The cover includes a plate for covering the o... | 04/09/2002 |
| 6361575 | Multipurpose single external seal filter assembly for metallic and ceramic tube filters with integral locking means A filter assembly (60) for holding a filter element (28) within a hot gas cleanup system pressure vessel is provided, containing: a filter housing (62), said filter housing inner walls defining a joint (98), said walls defining an interior volume (67); a ... | 03/26/2002 |
| 6312490 | Interlocked fiber fail-safe regenerator device A fail-safe/regenerator device (68), for use within a filter assembly (60) also containing a main filter element (28), contains a top main support (90), and a bottom main support (82), where a rigid, static bed of needles, fibers or wires (92), having an ... | 11/06/2001 |
