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Class 422/186.16 - With pulse generating means


Subclass of Class 422 - Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing
Definition: Subject matter wherein the voltage, current, frequency,
No. of patents: 49
Last issue date: 02/13/2007


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NumberTitleIssue Date
7174707Regeneration of a filter by the use of a tone generator
Method and arrangement for a combustion engine having an exhaust pipe, and a particle filter located in the exhaust pipe including a membrane which is permeable to gas components generated by a combustion process in the combustion engine but impermeable to soot and ...
02/13/2007
7067102Method and apparatus for producing ozone
A method of producing ozone comprises the steps of generating intermittent bursts of corona discharge in an electrode region 20.2, and passing oxygen-containing fluid through the region, thereby to cause ionization of the oxygen. The electrode is energized by...
06/27/2006
7029637Apparatus for ozone production, employing line and grooved electrodes
An ozone generation cell has a first conductor generally having a line geometry and a second conductor having a first groove formed in a surface thereof, and having first and second flanks on opposite sides of the first groove. The second conductor and the first gro...
04/18/2006
6984364Process and apparatus for chemical conversion
A process and reactor for chemical conversion is taught. The process allows the selective breaking of chemical bonds in a molecule by use of fast rise alternating current or fast rise pulsed direct current, each fast rise portion being selected to have a suitable vo...
01/10/2006
6955041Exhaust gas purifying apparatus for internal combustion engine
An exhaust gas purifying apparatus for an internal combustion engine, wherein the efficiency of exhaust gas purification is enhanced by optimally controlling the operating condition of a plasma generator mounted in an exhaust passage in accordance with the exhaust g...
10/18/2005
6912841Device and method for exhaust-gas treatment
A device and a method for treating the exhaust gas of an internal combustion engine are proposed, comprising an ozone reactor for supplying ozone to the exhaust gas at a delivery location (54), an oxidation reactor (20) for the at least partial oxidati...
07/05/2005
6841137Apparatus for generating ozone in high concentration
An apparatus for generating ozone in high concentration with efficiency and linearly controlling the concentration of ozone is disclosed. The apparatus includes an oxygen generator, a flat plate type ozone generator, a high-voltage transformer, a high-frequency inve...
01/11/2005
6772584Apparatus for removing soot and NOx in exhaust gas from diesel engines
A plasma system is provided for removing soot and nitrogen oxide (NOx) in the exhaust gas of diesel engines. The system is comprised of a diesel particulate filter for adopting a honeycomb type porous element and at least one pair of electrodes; a plasma ...
08/10/2004
6001315Apparatus for chemical conversion
A process and reactor for chemical conversion is taught. The process allows the selective breaking of chemical bonds in a molecule by use of fast rise alternating current or fast rise pulsed direct current, each fast rise portion being selected to have a ...
12/14/1999
5909086Plasma generator for generating unipolar plasma
The present invention relates to a plasma generator to apply cold plasma in the fields of medicine, biology, ecological recovery, activation, purification, special processing of gases, liquids and solid substances as well as other areas of technology and ...
06/01/1999
5855762Oxygen generating device
A method of controlling an oxygen generation device of the kind including a ceramic membrane through which an electrical current is passed whilst ambient air is supplied to one side of the membrane, the membrane allowing oxygen in the supplied air to diff...
01/05/1999
5824274Ozone treatment system for point of use purification of water and sanitizing agent for surfaces, articles and foods
An water purifier and surface sanitizer uses an ozone generator but requires no air dryer, is adapted for simple maintenance and for use in remote areas from low-voltage DC. The sanitizer has a housing with a high-voltage supply device such as a pulse coi...
10/20/1998
5770168Ozone-generator self adjusting push-pull circuit
An ozone producing machine that produces ozone by ionizing oxygen in the input gas with a high voltage arc. The present invention includes an electronic circuit that is used to drive a high frequency self oscillating push-pull ozone generating cell. The o...
06/23/1998
5766447Method and device for treating an aqueous solution
The invention relates to a method and a device for treating an aqueous solution, in which a pulsed electric field is generated in the aqueous solution between two electrodes. In accordance with the invention, at least one of the electrodes is covered with...
06/16/1998
5756054Ozone generator with enhanced output
There is disclosed an ozone generator having enhanced ozone generating capabilities. A cryogenic stream of oxygen is irradiated with a high voltage electron beam that converts a portion of the oxygen into ozone. When the oxygen stream is liquid, conversio...
05/26/1998
5540898Ozone generator with in-line ozone sensor
An apparatus for generating ozone from an oxygen supply. The apparatus comprises electrodes mounted in an enclosure and a high voltage circuit coupled to the electrodes for generating an electric field. The high voltage circuit receives AC power and inclu...
07/30/1996
5443800Pulse train generating circuit for control of an ozone generating means
A pulse train generating circuit for accurately controlling the ozone production of an ozone generator, is disclosed. The ozone generator may be an electrode type ozone generator or a laser type ozone generator. The circuit generates a first signal indica...
08/22/1995
5366702Apparatus for generating ozone utilizing an oscillating plate electrode
Apparatus for generating ozone with a high voltage source and at least two spaced plate electrodes with an interposed dielectric for forming at least one flow path, at least one of the plate electrodes being oscillatable, the plate electrode comprising tw...
11/22/1994
5362450Laser controlled decomposition of chlorofluorocarbons
A method to decompose chlorofluorocarbons gases (CFCs) enables the conventional disposal of their by-products. It employs photodecomposition of the CFC gas using UV light and a mediating species to allow chemical reactions to occur which form an effluent ...
11/08/1994
5285372Power supply for an ozone generator with a bridge inverter
A full bridge switching power supply is coupled to an ozonator load via a series resonant circuit having a resonant frequency above the switching frequency. Power output is controlled by varying the duration of the times when diagonal switches are conduct...
02/08/1994
5278492Controllable AC power supply for an ozonator
An ozonator power supply including a step-up transformer having one end of its primary winding connected to one side of an AC supply, its other end connected to the other side of the AC supply via a pair of switches connected in antiparallel, and a contro...
01/11/1994
5269893Method of powering corona discharge in ozone generators with bipolar pulses and a precharge pulse
A method employing a precharging pulse to adjust and/or to equalize the peak voltages of a discontinuous bipolar pulse waveform used for powering a corona in an ozone generator system. This precharging pulse is generally opposite in polarity to the first ...
12/14/1993
5268151Apparatus and method for generating ozone
A corona discharge generator is disclosed, and includes a central tube of electrically conducting material circumscribed by a glass tube having an electrically conducting coating on its exterior surface and being sealed to the exterior surface of the cent...
12/07/1993
5154895Ozone generator in liquids
This invention discloses an ozone generator having a simple structure and little mechanical trouble, whereby ozone gas is generated directly in water or stagnant solutions having a high electric conductivity without any blower or bubble generating device,...
10/13/1992
5137827Diagnostic element for electrical detection of a binding reaction
A method is disclosed for detecting the occurrence of a binding or complex-forming reaction between specific substances by utilizing the binding reaction to modify an electrical circuit, and then measuring a change in the electrical state of the circuit. ...
08/11/1992
5130003method of powering corona discharge in ozone generators
A method of supplying electrical power to and controlling corona discharge cells used for the generation of ozone employs a single-cycle discontinuous waveform which is characterized by a fixed pulse width and a variable repetition rate. Discrete bipolar ...
07/14/1992
5093087Ozonator apparatus
An apparatus for production of quantities of ozone utilizes a flow of air through an ozone chamber, wherein the ozone chamber is defined between a conductive rod and an externally positioned metallic housing. The metallic housing includes a polymeric cyli...
03/03/1992
5091069Ozone generation methods
A current source inverter power supply for an ozone generator which results in improved efficiency and reliability in operation of such generators has an AC/DC converter coupled through a large inductance to a DC/AC inverter that, in turn, is coupled at i...
02/25/1992
5087426Ozone deodorizer for refrigerators
An ozone deodorizing device for use in refrigerators, in which ozone is intermittently generated under action of a timer by use of a creepage discharger to avoid consumption of the battery, the discharge quantity is equalized by use of a pulse generator v...
02/11/1992
4833583Electric supply device for an ozonizer
Device for supplying power from a three-phase network to an ozonizer comprising at least two discharge elements (3, 4) having a capacitive character, and comprising two single-phase step-up transformers (1, 2) having air gaps connected in a SCOTT circuit ...
05/23/1989
4752866Ozonator power supply employing a current source inverter
A versatile current source inverter power supply for an ozonator in which a gating control circuit controls the gating of a thyristor bridge inverter power supply in a manner in which the output current to the ozonator is controlled and regulated. The cur...
06/21/1988
4713220Ozonator power supply
A versatile pulsed voltage resonant inverter power supply for an ozonator which results in the efficient operation thereof. A resonant inverter ozonator power supply comprises a DC power source and a DC/AC thyristor inverter coupled at its outputs to the ...
12/15/1987
4706182RF high-voltage power supply
There is disclosed a small-sized RF high-voltage power supply capable of stably supplying an RF high voltage to a load at the maximum power efficiency, even if the load has a nonlinear electrostatic capacity that varies with the applied voltage. The power...
11/10/1987
4694376Circuit for the pulsed operation of one or more high-frequency ozonizers
Circuit for the pulsed operation of one or more high frequency ozonizers, having at least one power supply producing a direct current, having a number of circuits corresponding to the number of ozonizers for the derivation of electrical pulses from the di...
09/15/1987
4682266Ozonator power supply employing a current source inverter
A solid state thyristor bridge inverter power supply for an ozonator in which the width and the amplitude of the ozonator current can be controlled and the ozonator voltage can be selectively reset. The power supply circuit includes a diode bridge rectifi...
07/21/1987
4680694Ozonator power supply
A versatile pulsed voltage resonant inverter power supply for an ozonator which results in the efficient operation thereof. A resonant inverter ozonator power supply comprises a DC power source and a DC/AC thyristor inverter coupled at its outputs to the ...
07/14/1987
4680686Electric 3-phase supply device for an ozonizer
A supply device connected to a 3-phase mains supply for an ozonizer comprising at least two capacitive discharge elements (7, 8). The device comprises two single-phase step-up voltage transformers (1, 2) having air gaps (5, 6) connected in a Scott circuit...
07/14/1987
4461744Apparatus for generating ozone by an electric discharge
An ozone-generating element is disclosed which has a tube ozonizer (1), consisting essentially of an outer metal tube (3) forming one electrode, and of a glass tube (4) which is located coaxially therein and is spaced from it and the inner surface of whic...
07/24/1984
4385261Method and apparatus for the execution of gas discharge reactions
A method and apparatus for producing gas discharge reactions in which a reaction gas is at least partially oxygenated after being taken through a discharge channel. In order to produce ozone by means of an electric discharge, the discharge channel has app...
05/24/1983
4331856Control system and method of controlling ion nitriding apparatus
A control system and method for an apparatus to glow discharge treat (such as ion nitride) a workpiece. The apparatus includes a housing to receive a workpiece and a low pressure atmosphere of ionizable gas (nitrogen and hydrogen for nitriding), and conne...
05/25/1982
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