Abstract: Provided are a complex multifunctional relay system capable of complexly performing an overcurrent blocking function, an arc blocking function, and an earth leakage blocking function by a relay circuit, and a control method therefor. The complex multifunctional relay system includes an AC circuit including a hot line and a neutral line, a power control means connected in parallel to the hot line, insulation differential amplifiers circuit-connected to the hot line and the neutral line through current shunts, a microprocessor connected to the power control means and the insulation differential amplifiers to perform monitoring and control the power supply of the power control means, a first comparator connected to the current shunt and the insulation differential amplifier and connected to the microprocessor so as to check ground fault, and a second comparator connected between the current shunt/the insulation differential amplifier and the microprocessor so as to check arc fault.

Abstract: Provided are a complex multifunctional relay system capable of complexly performing an overcurrent blocking function, an arc blocking function, and an earth leakage blocking function by a relay circuit, and a control method therefor. The complex multifunctional relay system includes an AC circuit including a hot line and a neutral line, a power control means connected in parallel to the hot line, insulation differential amplifiers circuit-connected to the hot line and the neutral line through current shunts, a microprocessor connected to the power control means and the insulation differential amplifiers to perform monitoring and control the power supply of the power control means, a first comparator connected to the current shunt and the insulation differential amplifier and connected to the microprocessor so as to check ground fault, and a second comparator connected between the current shunt/the insulation differential amplifier and the microprocessor so as to check arc fault.

Abstract: The present invention relates to an ion and ozone optimizing saturation method for indoor air. According to the method of the present invention, voltage serial pulses of one polarity type are fed to discharge ionization electrodes, and then voltage serial pulses of another polarity type are sequentially fed after a pause longer than the time for mutual recombination of anions and cations. At this time, the concentration of ions of different polarities is adjusted by changing the pulse repetition rate of a voltage pulse in a serial pulse, duration of serial pulses of the respective polarities and duration of the pause. Additionally, a voltage pulse is fed to the discharge ionization electrodes, and simultaneously or optionally, a voltage pulse having sufficient amplitude to generate a capacity type corona discharge between electrodes during the pause between serial pulses of different polarities is fed to ozonization electrodes.

Abstract: The present invention relates to an ozone treatment apparatus using ozone gas, in which the ozone gas is directly injected to a lesion of the human body by utilizing the sterilizing power caused by oxidation of ozone gas, so that the lesion can be sterilized and stanched to relieve the pain in the lesion, thereby maximizing therapeutic effect by the ozone irrespective of the shape of bodily regions having the lesion and the kind of lesion, and so that the treatment using ozone gas can be readily conducted, thereby improving convenience in use as well as significantly reducing the cost and time spent for the treatment.

Abstract: The present invention relates to an ozone treatment apparatus using ozone gas, in which the ozone gas is directly injected to a lesion of the human body by utilizing the sterilizing power caused by oxidation of ozone gas, so that the lesion can be sterilized and stanched to relieve the pain in the lesion, thereby maximizing therapeutic effect by the ozone irrespective of the shape of bodily regions having the lesion and the kind of lesion, and so that the treatment using ozone gas can be readily conducted, thereby improving convenience in use as well as significantly reducing the cost and time spent for the treatment.

Abstract: Disclosed is a method for impregnation of matters in wood utilizing sound vibration energy. The impregnation method is to impregnate specific functional matters or specific color paints into a semi-finished wood processed in the fiber direction or in the rectangular fiber direction. Impregnation fluid is coated on the surface of the semi-finished wood relatively thin, and the vibration generating surface of a sound vibration generator is located inside the impregnation fluid. At this time, the sound vibration generator is separated from the surface of the semi-finished wood at a predetermined interval and applies ultrasonic vibration.

Abstract: A sanitized footwear in which an ozone generating apparatus is provided so as to suppress the propagation of bacteria, to thereby prevent and cure athlete's foot, and the footwear has at the inner part of a heel thereof a metal or a resin casing having a piezo ceramic element and a driving lever at a pin shaft of the casing. The driving lever is coupled with a driving plate, a spark electrode with electricity applied thereto is generates sparks by a piezo effect into the footwear when the piezo ceramic element is compressed by pressing power of a wearer when the wearer walks, thereby generating ozone in the footwear.

Abstract: A device for increasing the hardness and intensity of wood which comprises chuck means for holding the wood in a fixed position for processing, a compression-shaped forming die for compressing the wood being processed, an ultrasonic wave-generating device operatively connected with the compression-shaped forming die for applying sound waves to the wood, a forming mold positioned downstream of said compression-shaped forming die for receiving wood therefrom, said forming mold further compressing said wood to remove a portion of the water contained therein, and means for advancing the chuck means containing the wood being processed through the compression-shaped forming die, the ultrasonic wave-generating device and the forming mold.