Abstract: An apparatus for removing particles from exhaust gas includes an electrode support block formed of a support constituted of electrical insulation material and having a recessed portion that opens to the downstream side of the exhaust gas flow, the electrode support block being arranged in an intake tube through which the flow of exhaust gas that contains the particles is introduced with an intervening space for the flow of exhaust gas between the peripheral surface of the support block and the intake tube. A hollow needle electrode with a spray nozzle at its tip is provided in the base of the recessed portion and a cylindrical electrode is provided in opposition to the hollow electrode around the inner edge of the recessed portion. Provided downstream of the cylindrical electrode is an atomization chamber into which flow the exhaust gas and charged droplets emitted from the spray nozzle. A cylindrical collector electrode is provided around the inside of the atomization chamber.

Abstract: Spray combination of two liquids is advantageously accomplished by applying a high potential of one polarity to a first liquid thereby converting the first liquid into finely divided ionized particles, spraying a second liquid through a porous member and applying thereto a high potential of the other polarity thereby converting the second liquid into finely divided ionized particles, and combining the two masses of finely divided particles of the two liquids electrostatically with each other.

Abstract: A method for blending at least two substances of different properties by combining fine particles thereof comprises exposing the at least two substances to corona discharges of opposite polarities, finely dividing the electrically charged substances and causing the finely divided particles of the substances to come into intimate contact with each other.

Abstract: In a closed discharge chamber wherein a discharge electrode supported on an electric insulating material and an opposite electrode are arranged to confront each other, a high electric potential applied between said electrodes causes corona discharge to occur in the gas between the two electrodes. A method for control of pure fluid elements, fluid servomechanisms, etc. is disclosed which is accomplished by utilizing a phenomenon that the pressure of the gas within the closed discharge chamber increases in consequence of the occurrence of corona discharge and the increased pressure falls with the subsequent extinction of corona discharge back to the level existing before said corona discharge.

Abstract: In cooling an article by the phenomenon of corona discharge caused when the article is placed opposite a high-potential electrode, a high electric potential is applied between the article and the electrode. This invention contemplates interposing a corona focusing ring between the article and the high-potential electrode. When high electric potential is also applied to the corona focusing ring, the avalanche of ions generated by the electrode in consequence of corona discharge is focused upon the article by the corona focusing ring, with the result that local cooling is effected on the article.