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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7662219 | Wet type electrostatic precipitator An electrostatic precipitator that can prevent the corrosion of a discharge electrode even if a gas to be treated containing a corrosive mist is treated. In an electrostatic precipitator having a discharge electrode arranged along a flow path of the gas to be treate... | 02/16/2010 |
| 7488375 | Fan cooling system A fan cooling system for use with an electronic apparatus having a fan for providing a cooling draft and adapted to remove draft-borne dust includes: an input module for receiving a control instruction; a programmable logic module electrically connected to the input... | 02/10/2009 |
| 7465338 | Electrostatic air-purifying window screen A window screen apparatus employing electrostatic principles to purify air. The window screen mesh wires encompass electrically-conductive filaments that are charged by a high-voltage DC pulse generator. Between and surrounding the wires an electric field is created... | 12/16/2008 |
| 7435287 | Air cleaner having separate modules for collector plates and ionizing wires An air cleaner is provided that includes one or more ionizing panels having at least one ionizing wire in connection with a voltage source. One or more collector cells separate from the one or more ionizing wire panels are releasably received within the air cleaner ... | 10/14/2008 |
| 7351274 | Air filtration system control An intense field dielectric air filtration system associated with an air conditioning unit includes a microprocessor based control system which may be connected to the thermostat of the air conditioning unit to energize the air filtration system in response to a cal... | 04/01/2008 |
| 7332019 | Air filtration system An air filtration system includable in and for HVAC equipment includes one or more intense field dielectric filter units and a field charging unit retained in a support structure or cabinet by a removable door which includes control circuitry and contactors engageab... | 02/19/2008 |
| 7326387 | Air decontamination devices Air decontamination devices in one example include a filter directly exposed to ultraviolet (“UV”) radiation on an upstream side and a downstream side. Ozone may be provided to permeate the filter, as well. Reflectors may be provided to reflect UV radiation emit... | 02/05/2008 |
| 7316729 | Air cleaner with improved airflow An air cleaner is provided according to an embodiment of the invention. The air cleaner includes an air duct including an inlet end and an outlet end, a pre-filter positioned at the inlet end, an electrostatic precipitator positioned in the air duct downstream of th... | 01/08/2008 |
| 7316734 | Volatile organic compound treatment apparatus A volatile organic compound treatment apparatus including an adsorber coming into contact with a gas to be treated and adsorbing volatile organic compounds; a plurality of pairs of electrodes, divided into a plurality of groups, which generate electric discharge so ... | 01/08/2008 |
| 7311756 | Fanless indoor air quality treatment An indoor air quality system for a structure is provided. The indoor air quality system includes a ventilation system and a corona discharge apparatus. The ventilation system directs air through the structure. The corona discharge apparatus is positioned within the ... | 12/25/2007 |
| 7285155 | Air conditioner device with enhanced ion output production features The present invention provides an air treatment device including a housing, an emitter electrode configured within the housing and a collector electrode configured within the housing and positioned downstream from the emitter electrode. The device preferably increas... | 10/23/2007 |
| 7276103 | Method and device for separating molecules having different excitation spectra The invention relates to a method for the separation of molecules having different excitation spectra, which form components of a gas. The molecules are excited by laser pulses in a way that the molecules to be separated are transferred into a state of excitation du... | 10/02/2007 |
| 7258715 | Air cleaner An improved filter element for use in an electrostatic precipitation air cleaning device, the filter element including rod electrodes arranged through a stack of alternating fluted plastic sheets and plate electrodes. Successive plate electrodes are arranged to make... | 08/21/2007 |
| 7252701 | Method of cleaning electric filter and electric filter The invention relates to a method of cleaning an electric filter and to an electric filter. In the method gas containing particles is fed to a chamber (2) of the electric filter. The gas is further fed to gas channels (5) in an emission system (3 | 08/07/2007 |
| 7239513 | Power control device The power control device has three units, each having two cooling fins set in opposed positions. Every cooling fin has an SCR mounted to adjust the voltage change. One of the two opposed cooling fins has a reed and a circuit board mounted thereon, and the power supp... | 07/03/2007 |
| 7235120 | Electrostatic aerosol filtering apparatus A battery (16) drives an electric motor (17) which in turn drives a fan (18). A circuit board (20) controls the operation of the motor and fan to maintain the flow rate. Air is drawn through an inlet (22) and out through a vent ( | 06/26/2007 |
| 7226496 | Spot ventilators and method for spot ventilating bathrooms, kitchens and closets A spot ventilator and method for spot ventilating a localized environment of a building is provided. The spot ventilator includes a passage and at least one corona discharge apparatus. The passage extending between an inlet positioned in the localized environment an... | 06/05/2007 |
| 7226497 | Fanless building ventilator A ventilation system for a building is provided. The ventilation system includes a pair of passages between the interior and exterior of the building and at least one corona discharge apparatus for drawing fluid through the passages. The ventilation system may also ... | 06/05/2007 |
| 7208030 | Suspended particulate analyzer An apparatus analyzes components of particulate materials suspended in air. The apparatus includes a container into which the air is introduced, a discharging electrode arranged in the container to electrically charge the particulate materials contained in the air, ... | 04/24/2007 |
| 7182805 | Corona-discharge air mover and purifier for packaged terminal and room air conditioners An air conditioning device for heating and/or an environment is provided. The air conditioning device includes a heat exchanging apparatus, a passage, and a corona discharge apparatus. The passage is in thermal communication with the heat exchanging apparatus and ex... | 02/27/2007 |
| 7166259 | Air purifier with control sensors An air purifier (10) held in a housing (12, 14) with an ambient air inlet (16) and an air outlet (18) and defining an airflow path therethrough for treating ambient air, a filter (disposed in the airflow path and having an air permeable m... | 01/23/2007 |
| 7163572 | Air purifier An air purifier for removing particles in air includes an outer casing, and an ionizer module. The ionizer module includes a power unit and an ionizing electrode unit, electrically connected to the power unit. The ionizing electrode unit includes a first electrode s... | 01/16/2007 |
| 7156899 | Area wide municipal electronic air cleaner and method The present invention provides a power generation facility that is adapted to clean large air masses. Air from the environment, which normally contains the most pollutants, is directed into an air flow path through which large quantities of air are directed by a plu... | 01/02/2007 |
| 7101422 | Polarity reversing circuit for electrostatic precipitator systems A gas separation apparatus using electrostatic precipitators and mechanical rappers is enhanced by the addition of an opposite polarity refreshing power supply and a switching arrangement. The switching components selectively disconnect the primary power supply and ... | 09/05/2006 |
| 7081152 | ESP performance optimization control A gas separation apparatus which uses electrostatic precipitators and a DC power supply is controlled to optimally remove moderate to high resistivity ash. The DC power supply is pulse width modulated to maximize the product of the peak electric field and the averag... | 07/25/2006 |
| 7077336 | Information-displaying unit The present invention refers to an information-displaying unit (1) which has a body of a determined geometrical shape internally with an illumination system having in the narrower portions thereof (12) an arrangement for installation of water atomizing... | 07/18/2006 |
| 7014686 | Electrostatic air cleaner An air cleaner electrode assembly includes an elongated collector electrode and a plurality of elongated discharge electrodes arranged around the collector electrode. A fan may move air in a direction parallel to a length of the electrodes. The collector electrode m... | 03/21/2006 |
| 7001447 | Polarity reversing circuit for electrostatic precipitator system A gas separation apparatus using electrostatic precipitators and mechanical rappers is enhanced by the addition of an opposite polarity refreshing power supply and a switching arrangement. The switching components selectively disconnect the primary power supply and ... | 02/21/2006 |
| 6980410 | Active lightning protection system and method An active lightning protection system and method is disclosed. According to one embodiment of the invention, the active lightning protection system includes a charge sensor that senses the build-up of charge associated with an imminent lightning strike in the proxim... | 12/27/2005 |
| 6974494 | Apparatus and method using an electrified filter bed for removal of pollutants from a flue gas stream Pollutants in a flue gas stream from a dryer of products, such as wood chips, are removed by a pollution abatement system that includes an electrified filter bed unit for removing solid particulates. To prevent deteriorated operation of the electrified filter bed un... | 12/13/2005 |
| 6953556 | Air conditioner devices An air conditioner includes an ion generator that provides ions and safe amounts of ozone. The ion generator includes a high voltage generator that provides a voltage potential difference between first and second electrode arrays. At least one of the first and secon... | 10/11/2005 |
| 6751527 | Heat and material balance method of process control for petrochemical plants and oil refineries A method comprising: a) selecting a loading variable from operating variables, the loading variable being directly related to total energy input into the system and equipment constraint of the system; b) selecting a performance specification variable w... | 06/15/2004 |
| 6616736 | Air purifier An air purifier (10) is provided having a housing (11) having a grilled air inlet (12), a grilled air outlet (13), and a control panel (14). The air purifier (10) also includes a pre-filter (16), a main filter (17), a blower (18) and a controller (19), al... | 09/09/2003 |
| 6464754 | Self-cleaning air purification system and process An economical air purification system and process that greatly reduces concentrations of dust and noxious gases to provide for a cleaner and healthier enviroment for people, plants, poultry and other animals. Desirably, the special air purification system... | 10/15/2002 |
| 6461405 | Method of operating an electrostatic precipitator A method of operating an electrostatic precipitator (7) includes feeding the precipitator with electric power generated by a power supply (10) according to a regime adapted to impart between the precipitator electrodes a voltage having a DC component and ... | 10/08/2002 |
| 6428611 | Apparatus for removing mist, smoke and particles generated by machine tools A filter apparatus for use in removing mist, smoke and particles generated by a machine tool includes a mechanical first filtration stage and a second filtration stage consisting of an electrostatic precipitator. A blower device creates a stream of air fo... | 08/06/2002 |
| 6254668 | Device for cleaning a static precipitator A device for cleaning static precipitator in which hot air and steam are repeatedly filled into an oil-collecting sink of the static precipitator at different times or at the same time for heating and melting the oil dirt attaching to the static panels, m... | 07/03/2001 |
| 6129781 | Air conditioning apparatus with an air cleaning function and electric dust collector for use in the same An air conditioning apparatus with an air cleaning function. In the apparatus, an electric dust collector is provided in the air passage on the rear side of a heat exchanger. A heater for self-cleaning is combined with a dust collector electrode of the el... | 10/10/2000 |
| 6033457 | Oxygen generator system and method of operating the same An oxygen generating system includes an oxygen generator having an oxygen ion conducting honeycomb structure and a heat exchanger thermally coupled to the oxygen generator. The system also includes a heater thermally coupled to the oxygen generator and a ... | 03/07/2000 |
| 5938823 | Integrated electrostatic collection and microwave sterilization for bioaerosol air purification Air cleansing apparatus includes an electrostatic precipitator in which the collector plates are made of, for instance, reticulated chemical vapor deposited silicon carbide, or reticulated silicon carbide ceramic coated with titanium nitride, zirconium di... | 08/17/1999 |
