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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7413593 | 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 ... | 08/19/2008 |
| 7364606 | Exhaust emission control device Provided are a hollow inner electrode constituted by an electrically conductive filter capable of capturing particulates, a cylindrical outer electrode circumferentially surrounding the electrode, a housing incorporated in a flow passage of exhaust and accommodating... | 04/29/2008 |
| 7267711 | Electrostatic precipitator for diesel blow-by A compact electrostatic precipitator is designed specifically for use in connection with eliminating particles from crankcase emissions of a Diesel engine. Such emissions may carry solid soot particles as well as suspended oil droplets. The electrostatic precipitato... | 09/11/2007 |
| 7122070 | Method of and apparatus for electrostatic fluid acceleration control of a fluid flow A device for handling a fluid includes a corona discharge device and an electric power supply. The corona discharge device includes at least one corona discharge electrode and at least one collector electrode positioned proximate each other so as to provide a total ... | 10/17/2006 |
| 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 |
| 7067939 | High-voltage pulse generator for an electrostatic filter A high-voltage pulse generator includes a storage capacitor which is connected to a voltage source via leads. One of the leads is connected to a reference potential via a node point. A switching device is connected in parallel with the storage capacitor on the volta... | 06/27/2006 |
| 6974560 | Electro-kinetic air transporter and conditioner device with enhanced anti-microorganism capability An electro-kinetic air conditioner for removing particulates from the air creates an airflow using no moving parts. The airflow is subjected to UV radiation from a germicidal lamp within the device. The conditioner includes an ion generator that has an electrode ass... | 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 |
| 6951582 | Air purifier device An air purifier device includes a fan unit in an electrically conductive housing for drawing ambient air into the housing via an air inlet, and an electrically conductive dust-collecting member in the housing and disposed adjacent to an air outlet. A detecting unit ... | 10/04/2005 |
| 6919698 | Electrostatic fluid accelerator for and method of controlling a fluid flow An electrostatic fluid accelerator includes a first number of corona electrodes and a second number of accelerating electrodes spaced apart from and parallel to adjacent ones of the corona electrodes. An electrical power source is connected to supply the corona and ... | 07/19/2005 |
| 6911186 | Electro-kinetic air transporter and conditioner device with enhanced housing configuration and enhanced anti-microorganism capability An electro-kinetic air conditioner for removing particulates from the air creates an airflow using no moving parts. The airflow is subjected to UV radiation from a germicidal lamp within the device. The conditioner includes an ion generator that has an electrode ass... | 06/28/2005 |
| 6908501 | Electrode self-cleaning mechanism for air conditioner devices An air conditioner with a cleaning member having an opening, through which a wire-like electrode passes. The member is moved along the wire to frictionally clean the wire-like electrode when a collector electrode array is moved. A lifting arm is mounted to the colle... | 06/21/2005 |
| 6905577 | Method for oxidation of volatile organic compounds contained in gaseous effluents and device thereof The present invention relates to both a method and a device for removing Volatile Organic Compounds (VOC) from gaseous streams in conduits, chimneys and/or exhaust ducts. The method is especially useful in eliminating a large variety of pollutants, and especially or... | 06/14/2005 |
| 6839251 | Apparatus and method for filtering voltage for an electrostatic precipitator An apparatus and method for controlling voltage applied to an electrostatic precipitator is disclosed. This apparatus includes a pulsating, direct current, voltage mechanism that is operable to receive power from a single phase, alternating current voltage source, a... | 01/04/2005 |
| 6611440 | Apparatus and method for filtering voltage for an electrostatic precipitator An apparatus and method for controlling voltage applied to an electrostatic precipitator is disclosed. This apparatus includes a pulsating, direct current, voltage mechanism that is operable to receive power from a single phase, alternating current voltag... | 08/26/2003 |
| 6508861 | Integrated single-pass dual-field electrostatic precipitator and method An improvement in an electrostatic precipitator and method for removing particulate contaminants entrained in a gas stream passed through an electrode arrangement in which particulates are charged in a first electrostatic field and subjected to a second e... | 01/21/2003 |
| 6471752 | Ionizing structure for ambient air treatment An ionizing structure for ambient air treatment wherein the structure, optionally having ceiling-mounting provisions, incorporates an ionizing element forwardly directed in the direction of airflow through the structure, an electrical power supply coupled... | 10/29/2002 |
| 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 |
| 6282106 | Power supply for an electrostatic precipitator In a power supply for an electronic precipitator with a power electronics part, a transformer connected at the output side and a high-voltage rectifier, the transformer and the high-voltage rectifier as well as a device for measured value acquisition are ... | 08/28/2001 |
| 6224653 | Electrostatic method and means for removing contaminants from gases An electrical apparatus includes a reaction chamber. A stream of contaminated gasses flows through the chamber. An elongated coronating electrode is positioned in the reaction chamber for producing a corona discharge within the chamber. A multi-stage Fitc... | 05/01/2001 |
| 6063168 | Electrostatic precipitator An apparatus for charging an electrostatic precipitator, powered by a power supply and having a plurality of corona electrodes and a plurality of collector electrodes, such that a precipitator capacitance may be formed therebetween, includes a storage cap... | 05/16/2000 |
| 6056808 | Modular and low power ionizer An apparatus for ionizing air to remove particulate matter. The apparatus including an ionizer and a bracket for mounting the ionizer and a bracket for mounting the ionizer in a duct or enclosure. The ionizer includes a series of electrodes which span a p... | 05/02/2000 |
| 6033565 | System for treating gases or fluids with pulsed corona discharges System for treating gases or liquids by corona discharge, comprising: a) a corona discharge space through which the gases or fluids to be treated are guided; b) a corona wire inside the corona discharge space; c) a source for supplying high voltage pulses... | 03/07/2000 |
| 5972076 | Method of charging an electrostatic precipitator A method for charging an electrostatic precipitator, powered by a power supply and having a plurality of corona electrodes and a plurality of collector electrodes, such that a precipitator capacitance may be formed therebetween, includes a storage capacit... | 10/26/1999 |
| 5707429 | Ionizing structure for ambient air treatment Improved ionizing structure for ambient air treatment wherein the structure incorporates an ionizing needle directed in the direction of airflow; the needle is negatively charged to produce an electrostatic field, preferably pulsating, whereby to ionize a... | 01/13/1998 |
| 5639294 | Method for controlling the power supply to an electrostatic precipitator Method for controlling, in case of flashover between electrodes in an electrostatic precipitator, the current supply to the electrodes from a controllable high-voltage direct-current source. The current supplied to the precipitator and the voltage between... | 06/17/1997 |
| 5578112 | Modular and low power ionizer An apparatus for ionizing air to remove particulate matter. The apparatus including an ionizer and a bracket for mounting the ionizer in a duct or enclosure. The ionizer includes a series of electrodes which span a portion of the duct. The electrodes are ... | 11/26/1996 |
| 5575836 | Electric dust collector There is provided a capacitor having an end connected to the ground and the other end connected through a secondary winding of a pulse transformer to the discharge electrode. The ground side terminal of the capacitor is connected through a smoothing circu... | 11/19/1996 |
| 5556448 | Electrostatic precipitator that operates in conductive grease atmosphere An improved electrostatic precipitator system is provided for use in high-grease atmospheres in which the grease is electrically conductive. The precipitator includes high-voltage insulators that are both located in areas unlikely to accumulate electrical... | 09/17/1996 |
| 5542967 | High voltage electrical apparatus for removing ecologically noxious substances from gases Electrical apparatus for removing ecologically noxious substances from gases which includes an electrical precipitator having a reaction chamber through which a stream of the gases to be cleaned passes, and which includes an elongated electrode extending ... | 08/06/1996 |
| 5456742 | Electric circuit having a convenience outlet for use in a humidifier or an air purifier An electric circuit is disclosed which includes an electric fan for dispersing air, a power switch for energizing the electric fan, and a convenience outlet for supplying power through the electric circuit to an external power consuming apparatus. The con... | 10/10/1995 |
| 5401299 | Air purification apparatus Air purification system where air is subjected to complex electrical field resulting from a DC voltage and AC frequency in kilovolt and kilohertz range respectively, applied to screen assembly in air path. DC amplitude and AC frequency self regulate to se... | 03/28/1995 |
| 5124905 | Power supply with feedback circuit for limiting output voltage A self-resonating power supply for controlling operation of an electrostatic air cleaner wherein the ouput voltage to the cell is limited to a desired value by means of a regulated feedback circuit so as to prevent nuisance arcing in the cell and to minim... | 06/23/1992 |
| 4911737 | Apparatus and method for environmental modification A compact environmental modification apparatus and method are disclosed for selectively supplementing predetermined characteristics of substantially enclosed environments, for example in rooms, and/or vehicles, to thereby more nearly simulate desirable na... | 03/27/1990 |
| 4909812 | Device for power supply of gas-cleaning electrical precipitators A device for power supply of gas-cleaning electrical precipitators comprises two constant voltage sources (1,2), the unlike poles (5,6) of each of the sources being grounded. Two high-voltage commutators made as triode-type thermionic rectifiers (7,8) wit... | 03/20/1990 |
| 4877428 | Ionic air cleaner for homes and motor vehicles The cleaner comprises a substantially cylindrical box-like housing enclosing a high static voltage generator, having at least an input and at least two outputs, one of the outputs being electrically coupled to at least an ionizing point assembly and the o... | 10/31/1989 |
| 4873620 | Voltage supply with recovery protection for a thyristor A voltage supply for an electric filter is disclosed. The supply comprises a high-voltage rectifier, a pulsed voltage circuit including a resonant circuit and a parallel circuit of a thyristor and a diode which controls resonance in the resonant circuit. ... | 10/10/1989 |
| 4872083 | Method and circuit for balance control of positive and negative ions from electrical A.C. air ionizers A balancing system for electrical A.C. air ionizers having at least one discharge electrode adjacently spaced from a proximity ground and connected to the high side of an A.C. high voltage power source includes (a) a capacitor interposed between each elec... | 10/03/1989 |
| 4867765 | Self-discharge type pulse charging electrostatic precipitator A self-discharge type pulse charging electrostatic precipitator includes a high-speed switching element through which the electrical charge stored in a condenser is suddenly supplied to the electrostatic precipitator and the charge is dissipated in an int... | 09/19/1989 |
