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| Number | Title | Issue Date |
| 8118899 | Self-cleaning device of filtering net of air conditioner A self-cleaning device of a filtering net of air conditioner is installed on a filtering frame in an air inlet of a dust spiral case of a package air conditioner and is disposed outside the filtering net. A filtering net guide rail with slots is installed on an uppe... | 02/21/2012 |
| 8070844 | Dust clearing blow-back valve and reservoir An accumulator having an internal valve opened by applying air pressure to a diaphragm with a small solenoid to apply air to the diaphragm where the air is supplied from a pilot air supply. When the internal valve operated by the diaphragm opens, it snaps to a fully... | 12/06/2011 |
| 8029583 | Cleaning apparatus for a gas filter A cleaning apparatus for a gas filter may include a movable support, a plurality of orifices, and a control system. The orifices may be arranged on the support for selective discharge of cleaning gas toward corresponding ones of filter openings disposed in a segment... | 10/04/2011 |
| 8029584 | Vacuum cleaners with self-cleaning filtration, and other self-cleaning filters A particularly advantageous vacuum cleaner system has at least two filters and self-cleans its filters via back-flushing, without needing to stop normal operation to self-clean. Also, a self-cleaning valve assembly is provided for use in a vacuum cleaner. Also, a va... | 10/04/2011 |
| 8007553 | Ceiling type air conditioner There is provided a ceiling type air conditioner capable of controlling the operation of at least one of a moving unit for moving a brush assembly or a suctioning unit for suctioning foreign matters stored in the brush assembly based on the position of the brush ass... | 08/30/2011 |
| 7947099 | Dust suction device with self-cleaning of the filters Described is a dust suction device, preferably for surface working tools, including a turbine, two filters, an inlet chamber containing the two filters provided with an air inlet and in communication with a depression chamber which is in turn in communication with t... | 05/24/2011 |
| 7837749 | System and method for monitoring impact machinery A system (10) for monitoring an operating condition of an electrostatic precipitator rapper system (12) includes a rapper (24) configured to mechanically actuate to disengage pollutants from a plate of the electrostatic precipitator (12).... | 11/23/2010 |
| 7594940 | Electrically heated particulate filter diagnostic systems and methods A system that diagnoses regeneration of an electrically heated particulate filter is provided. The system generally includes a grid module that diagnoses a fault of the grid based on at least one of a current signal and a voltage signal. A diagnostic module at least... | 09/29/2009 |
| 7438735 | Filter apparatus with automatic cleaning A filter apparatus includes a gas-impermeable outer conduit having an open end and a closed end. The interior of the outer conduit is axially divided into first and second sides. A first clean and first dirty flow path are defined within the first side. A first gas-... | 10/21/2008 |
| 7419520 | Dust collection unit and vacuum cleaner with the same A dust collection unit for a vacuum cleaner includes a dust collection container for collecting foreign objects contained in air introduced therein, covers defining a top and bottom of the dust collection container, and a filter-cleaning unit having a plurality of b... | 09/02/2008 |
| 7410521 | Filter service system and method A system for removing matter from a filtering device includes a flow receiving device having a plurality of blocking portions. Each of the plurality of blocking portions is configured to substantially block a flow directed by a corresponding at least one of a plural... | 08/12/2008 |
| 7404833 | Rotary pulse type filter dust collector The present invention discloses a rotary pulse type filter dust collector, which can maintain excellent de-dusting efficiency of a low pressure pulse type filter dust collector, reduce the number of required components in order to reduce manufacturing costs, mainten... | 07/29/2008 |
| 7402189 | Autonomously-cleaned conditioning system An autonomously-cleaned conditioning system conducts a routine purge cycle to clear accumulated particulates from a filter, concentrator, or both. The purge cycle is conducted by reversing air flow through the filter and/or concentrator. Air flow is reversed on a pe... | 07/22/2008 |
| 7399419 | Modular filtration system A filter system includes a set of modules, each module including screen assemblies and filter media sandwiched between the screen assemblies. A plurality of control assemblies are associated with each of the modules. Each of the control assemblies is in fluid commun... | 07/15/2008 |
| 7374600 | System and method for excluding false back pressure faults after installation of a particulate trap filter A method and system for preventing or minimizing false back pressure faults caused by a new particulate filter in an engine exhaust system. When a new particulate filter is placed in an engine exhaust system, the normal back pressure threshold for the fault detectio... | 05/20/2008 |
| 7371266 | Apparatus for cleaning a diesel particulate filter with multiple filtration stages The present invention is directed to a filter cleaning device, in particular, diesel particulate filters. In one embodiment, the device includes a source of high pressure fluid and a mechanism transport the fluid to a nozzle or nozzles; an actuator for moving the no... | 05/13/2008 |
| 7357822 | Filter control apparatus In order to calculate an estimation of the quantity of accumulated particulates in a filter (32), a first estimation calculation unit (100) that outputs first estimation data (XA) calculated from the filter before and after differential pressure, and a... | 04/15/2008 |
| 7354469 | Vacuum conveyor device with a multi-stage filter system A Vacuum conveyor device (10) with a multi-stage filter system, has at least one inner filter (10A), one outer filter (10B), and one filter adapter (20) especially for air-tight and/or fluid-tight insertion of at least one of the filters,... | 04/08/2008 |
| 7351273 | Apparatus and method for separating dust constituents out of an explosive dust-air mixture A method and an apparatus (10) for separating dust constituents out of an explosive dust-air mixture which is passed through a filter housing (26) with filter elements having filter surfaces use a dust container (64), which can be connected in a... | 04/01/2008 |
| 7338544 | Z-filter media with reverse-flow cleaning systems and methods A method for cleaning a filter having Z-media includes providing a filter having Z-media and cleaning the media construction by directing a pulse of compressed gas into the media construction through the downstream flow face. Filter elements useable with such method... | 03/04/2008 |
| 7329298 | Filter A filter for exhaust gases produced by an internal combustion engine, and a method of using such a mat on a vehicle. The filter is a mat of fibers enclosed within a metal gauze. Preferably, the mats are corrugated and spaced apart within a housing such that exhaust ... | 02/12/2008 |
| 7318848 | Dust collector for a vacuum cleaner A dust collector is disposed between an intake port and an exhaust port in a vacuum cleaner. Air flows from the intake port into the exhaust port along an airflow path in the dust collector. The dust collector includes a dust-collecting net disposed in the path, and... | 01/15/2008 |
| 7314501 | Methods and device for filtration of exhaust gases for a diesel engine with a filtration surface which is variable by means of controlled obstruction A method in which all or some of the particles contained in the exhaust gases of a diesel engine are retained on particle filters and burnt due to the action of a combustion catalyst. At least a part of the particle filters are obstructed when the temperature θg of... | 01/01/2008 |
| 7311823 | Pool filter cleaning device A pool filter cleaning device (1) which allows a person to thoroughly clean a filter cartridge (15) quickly and easily with minimal amount of splash back. The pool filter cleaning device (1) is comprised of a handle (2), an angled head se... | 12/25/2007 |
| 7309366 | Bag cleaning compressed air nozzle A process and apparatus for cleaning filter cake from the interior of a baghouse bag. A nozzle through which compressed gas flows is positioned on the interior of a bag such that gas is directed to, and thereby disrupts, the filter cake. The compressed gas flows in ... | 12/18/2007 |
| 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 |
| 7303603 | Diesel particulate filter system with meta-surface cavity A diesel particulate filter including a microwave-absorbing target housed within a waveguide cavity lined along the walls with a hard-electromagnetic surface (HES). The HES modifies specific electromagnetic boundary conditions for a given design frequency so as to e... | 12/04/2007 |
| 7303602 | Diesel particulate filter using micro-wave regeneration A diesel particulate filter including a microwave-absorbing target within a waveguide cavity. The cavity accepts microwave-frequency electromagnetic radiation through input couplers 90 degrees out of phase with each other to excite circular polarization heating mode... | 12/04/2007 |
| 7300481 | Method and device for cleaning filters for dust-laden waste gases The invention relates to a method for cleaning filters for dust-laden waste gases, including several filter elements (2) which are arranged vertically in a filter housing (1) and which have an upper open end (16) and a lower closed end (15 | 11/27/2007 |
| 7296402 | Diesel particulate filter service method A diesel particulate filter of a motor vehicle is cleaned of ash, typically using equipment already available in a service shop. The filter apparatus is disconnected from the exhaust system of a motor vehicle. The filter apparatus is reversed and reconnected to the ... | 11/20/2007 |
| 7288137 | Particulate trap A particulate trap has a plurality of filters and an air distributor. The air distributor has a first flow member and a second flow member. Each of the first and second flow members have a plurality of openings to allow exhaust flow through the plurality of filters.... | 10/30/2007 |
| 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 |
| 7282075 | Z-filter media with reverse-flow cleaning systems and methods A method for cleaning a filter having Z-media includes providing a filter having Z-media and cleaning the media construction by directing a pulse of compressed gas into the media construction through the downstream flow face. Filter elements useable with such method... | 10/16/2007 |
| 7270691 | Integrated air processing devices and isolation containment systems using such devices In accordance with an embodiment of the invention, an integrated air processing device includes a housing defining an air inlet, an air outlet, and a pathway from the inlet to the outlet. An air decontamination section, an air conditioning section, and a heating sec... | 09/18/2007 |
| 7267703 | Electrically regeneratable filter element An electrically regeneratable filter element comprises at least two flanks, each of these flanks comprising a stiff material layer. Each of these flanks has at least one thermally and electrically insulated side. The filter element comprises further a metal fiber fl... | 09/11/2007 |
| 7264642 | Exhaust gas cleaning apparatus In an exhaust gas cleaning apparatus (30) in which a before and after differential pressure (ΔP) of a filter (32) used to trap particulates is detected for regeneration of the filter (32), a time at which, during filter regeneration, the temper... | 09/04/2007 |
| 7249606 | Apparatus for online and offline cleaning of industrial systems An industrial air or liquid handling device access and cleaning apparatus which allows the cleaning operator to clean the interior of a device while the device continues in operation, thus negating the need to shut down the system. The apparatus incorporates a clean... | 07/31/2007 |
| 7247190 | Engine exhaust gas cleaning apparatus An engine exhaust gas cleaning apparatus is provided to minimize torque shock as during regeneration of an exhaust gas cleaning device. The engine exhaust gas cleaning apparatus comprises a fuel delivery device that delivers fuel to an engine at a lean excess air ra... | 07/24/2007 |
| 7208029 | Exhaust gas cleaning system An exhaust gas cleaning system is provided that comprises a particulate filter and an NOx trapping catalytic converter disposed upstream of the particulate filter. The exhaust gas cleaning system is configured to determine a combustion amount of the particulate matt... | 04/24/2007 |
| 7195659 | Reverse-flow cleaning systems and methods A device and method for cleaning a filter element. The device including a valve interconnected to a blowpipe. A nozzle is positioned at an end of the blowpipe and to direct a pulse of compressed gas into the filter element. The nozzle includes a body and a diffuser ... | 03/27/2007 |
