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| Number | Title | Issue Date |
| 8128719 | Filter element with percussion band A filter element has a reinforcement band or ring along at least a portion of the perimeter thereof and performing a support function thereat preventing or minimizing damage upon attempted percussive cleaning of the filter element by service personnel striking the p... | 03/06/2012 |
| 8052766 | Device and method for cleaning selective catalytic reduction protective devices One embodiment described herein relates to a system for removing pollutants from a flue gas. The system includes a selective catalytic reduction (SCR) system having a SCR reactor containing a NOx reducing catalyst and one or more SCR protective devices. A... | 11/08/2011 |
| 7896936 | Filter cleaning apparatus A filter cleaning mechanism for a cylindrical filter within a filter box of a surface maintenance machine having a shaker plate engaging a top end of the filter and having vibrations induced via a motor and eccentric mass combination. In one example, the motor and e... | 03/01/2011 |
| 7785381 | Dust collecting apparatus with combined compacting and filter cleaning for a vacuum cleaner A dust collecting apparatus for a vacuum cleaner is provided. The dust collecting apparatus includes a dust collecting unit detachably mounted in a main body of the vacuum cleaner, to separate and collect dust from drawn-in air flowing therein; a filter unit dispose... | 08/31/2010 |
| 7736406 | Vacuum cleaner A vacuum cleaner includes a main body accommodating therein an electric blower and a dust-removal driving body; and a filter unit including a frame body where a filter for collecting dust particles is installed and a dust removing plate provided at a downstream side... | 06/15/2010 |
| 7628830 | Electric vacuum cleaner An electric vacuum cleaner includes a first dust separation device configured to separate sucked dust, a first dust collection section for collecting the separated dust, a second dust separation device configured to separate the dust, a dust removing device configur... | 12/08/2009 |
| 7615086 | Assembly for ash separation from flue gas A particulate separator includes a plurality of perforated screens which remove ash particulate from flue gas. A rapper assembly dislodges ash deposits on the perforated screens by exerting a vibrating force thereon. Shafts, which are operatively connected to a rapp... | 11/10/2009 |
| 7386916 | Self-cleaning vacuum cleaner and receptacle therefor A self-cleaning vacuum cleaner 1 is disclosed. The vacuum cleaner 1 comprises a housing 2 having an inlet 5 and an outlet 6, and a fan arranged within the housing 2 for causing air to flow through a coarse filter and a fine ... | 06/17/2008 |
| 7360275 | Dirt separation system for a vacuum cleaner A vacuum cleaner includes a dirt separation system that has a dirt cup retaining a filter assembly having a screen element, an exit, and a filter element disposed between the screen element and the exit. A nozzle disposed in the dirt cup directs an airstream general... | 04/22/2008 |
| 7346957 | Vacuum cleaner A vacuum cleaner includes an electric blower for generating a suction air stream and a dust collecting unit for collecting dirt particles contained in the suction air stream. The suction air stream passing through the dust collecting unit into the electric blower fl... | 03/25/2008 |
| 7329293 | Disposable filtration system for bagless vacuum cleaners According to the present invention, a bagless vacuum cleaner includes a dust chamber, a primary filter and a second filter. The dust chamber includes an entrance and an exit. The primary filter is disposed in the dust chamber between the entrance and the exit and th... | 02/12/2008 |
| 7318249 | Vacuum collector having sweeping device A vacuum collector includes a filter housing, a filter member disposed in the filter housing, and a sweeping device disposed in the filter member for sweeping the filter member, to sweep of dirt from the filter member, and to allow the dirt to be removed from the fi... | 01/15/2008 |
| 7309365 | Vacuum cleaner A vacuum cleaner including an electric blower for generating suction air, a collecting unit for collecting dust contained in the suction air, a dust removing unit for removing dust adhered to the collecting unit, and a dust removing stop unit for stopping an operati... | 12/18/2007 |
| 7305735 | Vacuum cleaner equipped with dirt cup and separate filter drawer A vacuum cleaner includes a housing, a nozzle inlet, a suction generator, a dirt cup and a filter assembly. The suction generator, dirt cup and filter assembly are all carried on the housing. The dirt cup includes an inlet and an outlet that provide fluid communicat... | 12/11/2007 |
| 7282074 | Auxiliary dust collection system An auxiliary dust collection system can be interposed between a sander or other dust producing tool and a vacuum source, e.g., shop vacuum. This auxiliary system has a cyclonic separator connected by a flexible hose to the tool and by another hose to the vacuum sour... | 10/16/2007 |
| 7279137 | Burners and combustion apparatus for carbon nanomaterial production The invention provides improved burners, combustion apparatus, and methods for carbon nanomaterial production. The burners of the invention provide sooting flames of fuel and oxidizing gases. The condensable products of combustion produced by the burners of this inv... | 10/09/2007 |
| 7222392 | Airflow system for bagless vacuum cleaner A bagless vacuum cleaner (10) includes a nozzle assembly (16) having a suction nozzle for picking up dirt and debris from a surface to be cleaned and a canister assembly (18) including a cavity (32). A dust collection assembly (12)... | 05/29/2007 |
| 7208025 | Method and apparatus for filtering air passages in an alternator A filter to clean the air entering an alternator in a vehicle used in a dirty environment such as a crop harvesting machine includes a mesh filter which is coupled to an air intake of the alternator. The filter is constructed of a mesh material which is flexible and... | 04/24/2007 |
| 7188389 | Dirt collecting system for a floor care appliance The invention is a floor care appliance such as vacuum cleaner having several embodiments of a dirt particle separating and collecting system removably inserted and sidewardly disposed into a recess in the floor care appliance's housing. One embodiment of the dirt p... | 03/13/2007 |
| 7186281 | Dust-removing device for the dust-collecting tank of a dust-collecting machine A dust-removing device for the dust-collecting tank of a dust-collecting machine includes a guide frame installed inside the dust collecting tank and having a central guide rod for a brush base to move up and down thereon. The brush base has its outer circumferentia... | 03/06/2007 |
| 7150863 | Polynuclear aromatic hydrocarbons for fullerene synthesis in flames This invention provides improved methods for combustion synthesis of carbon nanomaterials, including fullerenes, employing multiple-ring aromatic hydrocarbon fuels selected for high carbon conversion to extractable fullerenes. The multiple-ring aromatic hydrocarbon ... | 12/19/2006 |
| 7144438 | Dust collecting container for vacuum cleaner A dust collecting container for a vacuum cleaner is removably mounted in a suction chamber of a cleaner body to filter a dust from a dust-laden air being drawn into the suction chamber through an air suction hole that is connected with the outside. The dust collecti... | 12/05/2006 |
| 7134166 | Upright vacuum cleaner with cyclonic airflow A vacuum cleaner includes a first housing defining a cyclonic airflow chamber and a second housing defining a main suction opening that is in communication with an inlet of the cyclonic chamber. A suction source has a suction airstream inlet in communication with an... | 11/14/2006 |
| 7131165 | Upright vacuum cleaner with cyclonic airflow A vacuum cleaner includes a first housing defining a cyclonic airflow chamber and a second housing defining a main suction opening that is in communication with an inlet of the cyclonic chamber. A suction source has a suction airstream inlet in communication with an... | 11/07/2006 |
| 7090711 | Multistage air cleaner including pulse cleaning system A V-pack filter includes a frame construction having a first frame structure and a second frame structure. The V-pack filter also includes first and second panel sections mounted in extension between the first and second frame structures. The first panel section has... | 08/15/2006 |
| 7008465 | Cleanable high efficiency filter media structure and applications for use An improved cartridge, typically in cylindrical or panel form that can be used in a dry or wet/dry vacuum cleaner. The cartridge is cleanable using a stream of service water, or by rapping on a solid object, or by using a compressed gas stream, but can provide excep... | 03/07/2006 |
| 6974487 | Cooling air cleaning device for a harvesting machine A device for cleaning a perforated radiator cage with at least one end face and peripheral side on an agricultural harvesting machine, wherein the device consists of an external brush which is associated with the radiator cage and which is in turn surrounded by a un... | 12/13/2005 |
| 6755016 | Diesel engine particle filter A diesel particle filter for lowering the emission of particles contained in the exhaust gas of a Diesel engine, is disclosed with the impaction surface of the diesel particle filter is developed such that binding forces of the ash to filter is lowered. Therefore, t... | 06/29/2004 |
| 6638329 | Filter having a folded dust filter element and a cleaning device for the folded dust filter element A filter for filtering dust-containing air including a filter insert (2) and a cleaning device (3) having a contact element (6) mechanically contacting the filter insert along an end edge (4a/4b) of a folded dust filter element (5) forming part of the fil... | 10/28/2003 |
| 6616734 | Dynamic filtration method and apparatus for separating nano powders A method and apparatus for separating nanometer-sized particles of a powder. The method includes (a) feeding the powder particles into a pressurized gas stream which carries the particles into a first stage filter device of a multiple-stage separator syst... | 09/09/2003 |
| 6598263 | Vacuum cleaner dirt collecting system with filter cleaning devices A dirt collecting system for a vacuum cleaner includes a dirt cup formed with a coarse particle separation chamber and a fine particle separation chamber separated by an apertured wall. Coarse dirt particles directed into the coarse particle separation ch... | 07/29/2003 |
| 6471751 | Polycyclonic vacuum collectors for virtually non-stop environmental remediation A vacuum collector is provided comprising a suction hose, a first drum with a cover having a cylindrical head capable of generating powerful, small-diameter cyclones, a second drum capable of generating large-diameter cyclones, and a stack of three module... | 10/29/2002 |
| 6280491 | Cartridge filter An apparatus for separating and filtering pollutants from a fluid flow by using inertia to separate a proportion of the pollutants from the fluid flow passing through a constricted passage between a pair of filter elements to an outlet between the filter ... | 08/28/2001 |
| 6270732 | Particle collection apparatus and associated methods A particle collection apparatus has a chamber, one or more filters and a back pressure system. The filters are located in the flow path through the system to collect the particles from an input gas stream. The back pressure system applies a pulse of gas a... | 08/07/2001 |
| 6202765 | Device having a filter, a filter vibrating means and a scraper used for sucking off drillings A device for sucking off drillings during the drilling of boreholes, comprising a suction fan (9) and a filter (10) as well as an opening closeable by a lid for emptying the drillings reception space (8) preceding the filter (10), in which, for the simple... | 03/20/2001 |
| 6117200 | Electromagnetic filter cleaning system A mobile surface maintenance machine has a cleaning brush and a dust collection system mounted on the machine. The dust collection system includes a vacuum fan, a filter housing having an air inlet and a pleated filter element positioned within the housin... | 09/12/2000 |
| 5999769 | Filtering system for removing toner from an air stream in a development housing An electrophotographic printing machine of the type in which an electrostatic latent image recorded on a charge retentive surface is developed with toner particles to form a visible image thereof, including; a housing having a supply of toner and develope... | 12/07/1999 |
| 5865879 | Gas scrubber used in fabricating semiconductor devices and gas filtering method using the same A gas scrubber used in fabricating semiconductor devices and a filtering method using the same are provided. The gas scrubber contains a flange having an inlet on the upper surface thereof, a hollow housing combined at one end with the outer circumferenti... | 02/02/1999 |
| 5829094 | Sweeper with electromagnetic filter cleaning A sweeping machine has a housing, wheels for moving the housing, a sweeping brush mounted on the housing, a hopper positioned adjacent the brush to receive dust and debris therefrom, a dust collection chamber on the housing, and a vacuum fan mounted on th... | 11/03/1998 |
| 5711775 | Sweeper with electromagnetic filter cleaning A sweeping machine includes a housing, wheels for moving the housing and a sweeping brush mounted on the housing. There is a hopper positioned adjacent the brush to receive dust and debris from the rotating brush. A dust collection chamber is located on t... | 01/27/1998 |