baber/WOPTO huggingface dataset:
Patent KR-20020074510-A (KR)
IPC: C12N9/16
Filed: 2001-12-07
Abstract: 저장 안정성 수지를 제조하는 방법 및(또는) 수지를 처리하는 방법을 포함하는, 폴리아민-에피할로히드린 수지에 저장 안정성을 부여하는 방법.  감소된 CPD-형성 폴리아민-에피할로히드린 수지를 함유하는 조성물이 50℃ 및 약 1.0의 pH에서 24 시간 동안 저장시 습윤 지력증강 폴리아민-에피할로히드린 수지의 경우 약 250ppm (건조 기준) 미만의 CPD 그리고 크레핑 폴리아민-에피할로히드린 수지의 경우 약 100 ppm(건조 기준)의 CPD를 방출하도록 겔화 저장 안정한 감소된 CPD-형성 수지를 얻기 위해 CPD-형성 종을 적어도 억제하거나 감소시키거나 제거하는 조건 하에서, 15 중량% 이상의 고형분 함량을 포함하는 폴리아민-에피할로히드린 수지를 함유하는 조성물을 효소제로 처리한다.  폴리아민-에피할로히드린 수지를 실질적으로 원래의 상태로 유지하면서 질소 없는 유기할로겐의 농도를 감소시키기 위해 질소 비함유 유기할로겐 화합물을 탈할로겐하는 조건 하에서, 1종 이상의 미생물 또는 1종 이상의 미생물로부터 분리된 1종 이상의 효소를 15 중량% 이상의 고형분 함량 포함 수성 소성물에 첨가하는 것을 포함하는, 질소 비함유 유기할로겐 화합물의 농도를 감소시키기 위해 질소 비함유 유기할로겐 화합물 및 폴리아민-에피할로히드린 수지를 포함하는 수성 조성물을 처리하는 방법.  감소된 CPD-형성 폴리아민-에피할로히드린 수지를 함유하는 조성물이 50℃ 및 약 1.0의 pH에서 24 시간 동안 저장시 약 250ppm (건조 기준) 미만의 CPD를 방출하도록 겔화 저장 안정한 감소된 CPD-형성 수지를 얻기 위해 CPD-형성 종을 적어도 억제하거나 감소시키거나 제거하는 조건 하에서, 15 중량% 이상의 고형분 함량을 포함하고 CPD-형성 종을 포함하며 습윤 지력증강 폴리아민-에피할로히드린 수지를 함유하는 조성물을 효소제로 처리하는 것을 포함하는, 폴리아민-에피할로히드린 수지에 저장 안정성을 부여하는 방법으로서, 
     감소된 CPD-형성 수지를 얻기 위해 폴리아민-에피할로히드린 수지 함유 조성물의 상기 처리와 동시에, 유기적으로 결합된 할로겐의 잔류량을 탈할로겐화하는데 효과적인 양, pH 및 온도 하에서 상기 수지를 1종 이상의 미생물 또는 이 1종 이상의 미생물로부터 분리된 1종 이상의 효소와 접촉시키는 것인 방법.  약 1중량%의 첨가 농도로 수지를 첨가하기 위해 보정시 저장 안정성이 폴리아민-에피할로히드링 수지를 함유하는 종이 생성물이 약 250 ppb 미만의 CPD를 함유한다.
Patent KR-20020077446-A (KR)
IPC: H04L12/26
Filed: 2001-02-02
Abstract: 네트워크 고장 진단, 네트워크 퍼포먼스 특성화 및 새로운 장비와 소프트웨어 릴리스의 평가에 사용되는 인터넷 서비스 프로바이더(ISP) 네트워크 엔지니어에 대한 테스팅 툴이 설명된다.  이 툴은 가입자에게 영향을 주기 전에 네트워크 문제를 식별하기 위해 프로액티브 테스트를 스케줄링하고 실행하도록 사용될 수 있다.  더욱이, 이 툴은 툴 또는 네트워크 관리 시스템 또는 가입자에 의해 식별된 문제의 근본 원인을 신속하게 격리시키기 위해 주문형 테스트를 제공하도록 사용될 수 있다.  이 툴은 토폴로지에 독립적이고 그래서 네트워크가 변함에 따라 재구성될 필요가 없다.  이 툴은 그러한 과중한 네트워크 로드가 네트워크 엔지니어에 의해 요구되지 않는다면, 네트워크 엔지니어에 의해 지시되는 트래픽만을 전송하고 그래서 바람직하지 않은 과중한 네트워크 트래픽 로드를 발생시키지 않는다.
Patent KR-20020093025-A (KR)
Title: 집적된 ｆｅｔ 및 드라이버
Filed: 2002-01-25
Abstract: 본 발명은 로우측 구성요소 및 동기형 dc 전압 컨버터 회로에 관련된다.  동기형 FET(8)는 하이 및 로우 전압 파워 접속부(134, 138) 사이에 파워링되는 드라이버(32)에 의해 제어된다.  타이밍 회로(150)는 제어 입력단상의 신호에 따라 드라이버 회로를 제어한다.  드라이버 회로(32)는 예컨대 레벨 쉬프트 회로(136)에 의해 타이밍 회로(150)로부터 절연되며, 드라이버 회로의 로우 전압 파워 접속부(138)는 동기형 FET(8)의 소스(108)에 직접 접속된다.  이것은 과도적인 전압 영향을 감소시킬 수 있다.
Patent KR-20030063113-A (KR)
IPC: A61K31/165
Filed: 2001-05-04
Abstract: 본 발명은 PDF 저해제 및 그의 사용을 위한 신규한 방법에 관한 것이다.
Patent KR-20030012875-A (KR)
IPC: G02B27/00
Filed: 2002-03-27
Abstract: 후광 시스템이 전방벽(2; 12)과, 그 반대편의 후방벽(3; 13)과, 대향하는 에지 표면(4, 14; 5, 15)을 갖는 적어도 두 개의 발광 패널(1; 11)을 포함한다.  이 에지 표면(4; 14)중 적어도 하나는 광을 투과하며, 광원(6; 16)과 관련된다.  광원(6; 16)으로부터 시작된 광은 발광 패널(1; 11) 내에서 확산되며, 표시장치(25), 바람직하게는 LCD 장치의 방향으로 발광 패널(1; 11)로부터 커플링아웃된다.  발광 패널(1)과 관련된 광원(6)은 적색과 청색 또는 적색과 녹색의 LED의 그룹을 포함한다.  발광 패널(11)과 관련된 광원(16)은 청색과 녹색 LED 또는 녹색만의 LED의 그룹을 포함한다.
Patent KR-20040062322-A (KR)
Inventor: AHN SEONG MAN
IPC: G11B7/004
Filed: 2003-01-02
Abstract: PURPOSE: A method for variably controlling a data recording speed is provided to read/process the data temporarily stored in a buffer to record the data at predetermined recording speed, and to variably control a current data recording speed according to an amount of the stored data, thereby preventing a buffer under-run phenomenon. CONSTITUTION: A microcomputer performs a series of operations for recording data at predetermined recording speed(S10). The microcomputer detects/monitors an amount of data temporarily stored in a buffer(S11). If the amount of the data satisfies a reference range(S12), the microcomputer maintains a current recording speed. If the amount of the data is less than the reference range(S14), the microcomputer reduces the current data recording speed(S15). If the amount of the data exceeds the reference range(S16), the microcomputer increases the recording speed(S17). Until the data recording operation is completed(S18), the microcomputer repeats a variable controlling process for the data recording speed.
Patent KR-20040062786-A (KR)
Inventor: KANG BYEONG GYU
IPC: F25D11/00
Filed: 2003-01-03
Abstract: PURPOSE: A side-by-side type refrigerator having a Kimchi storage is provided to improve the convenience of a user by appropriately storing Kimchi in a refrigerator. CONSTITUTION: A main body has a freezing chamber(21) and a refrigerator compartment divided by a partition wall arranged in a vertical direction. A barrier(53) is arranged at an inner lower area of the freezing chamber for forming a Kimchi storage(51) dividedly from the freezing chamber. A cold air supply path(55) supplies cold air into the Kimchi storage. A damper(57) is arranged to open and shut the Kimchi storage. A temperature detecting sensor(58) detects an inner temperature of the Kimchi storage. A control unit controls the damper based on a result of detecting the temperature.
Patent KR-20040065665-A (KR)
Inventor: CHO YOUNG HOON
IPC: G09F9/305
Filed: 2003-01-15
Abstract: PURPOSE: A lens for diverging the light of advertisement device by using an optical fiber is provided to improve the efficiency of the advertisement as the light diverges and a user clearly identifies the light at the side of the lens. CONSTITUTION: A lens for diverging the light of advertisement device by using an optical fiber includes a cylindrical body(41), a cylindrical flange(42), a coupling hole(43), a guiding hole(44) and a cylindrical holder(50). The cylindrical flange(42) is formed on the rear side of the cylindrical body having an end portion in the form of semi-sphere. The coupling hole(43) is formed in the rear side of the cylindrical flange(42) and the guiding hole(44) is subsequently formed in the cylindrical flange(42). The cylindrical holder(50) is inserted into the coupling hole(43), wherein the optical fiber(20) is inserted into the cylindrical holder(50), whereby a space is formed between the inside of the coupling hole(43) and the cylindrical holder(50). The light illuminated through the end of the optical fiber(20) is uniformly and wholly diverging on the lens(40) with being reflected and diffused by the space and the cylindrical holder(50).
Patent KR-20040065809-A (KR)
Inventor: JUNG TAE IL
IPC: H04N7/24
Filed: 2003-01-16
Abstract: PURPOSE: A video decoding system is provided to configure a field-structured outer memory map for an interlaced-scanning image, and to configure a frame-structured memory map for a sequential scanning image, then to store/read one macro block with one access, thereby reducing an entire bandwidth and a local processing time. CONSTITUTION: A video decoding portion(100) performs VLD(Variable Length Decoding), IQ(Inverse Quantized), IDCT, and MC(Motion Compensation) processes for a compressed bit stream, and restores into an original image signal. A DDR(Double Data Rate) SDRAM(201) configures a field-structured or a frame-structured memory map when storing video decoded-data or outputting the stored data for MC, simultaneously stores luminance signals or chrominance signals, and simultaneously outputs the signals. A memory interface portion(202) interfaces with the video decoding portion(100) and the DDR SDRAM(201), and re-disposes the video decoded-data such that data of one macro block can be stored/read in the DDR SDRAM(201).
Patent KR-20040067360-A (KR)
Inventor: CHA YONG SEON
IPC: F17D3/00
Filed: 2003-01-22
Abstract: PURPOSE: A device for solving the rapid pressure rise is provided to lower the pressure in a gas container by bursting a safety bursting part at the pressure lower than the pressure bursting the gas container. CONSTITUTION: In a gas equipment having a gas pipe including a gas inlet and a gas outlet, a device for solving the rapid pressure rise comprises an emergency gas outlet pipe(11a,11b) installed to a side of the gas pipe to be communicated with a gas exhaust pipe; and a plate fuse(21) which is installed to a side of the emergency gas outlet pipe with a first and a second couplers(24,25) and which bursts below the maximum pressure which the gas pipe endures in.
Patent KR-20040069434-A (KR)
Inventor: CHOI MOON GYU
IPC: E02B3/12
Filed: 2003-01-29
Abstract: PURPOSE: A forming method of cutoff for protecting an embankment or a bottom of a river is provided to prevent the loss of river water and to prevent the breaking of an embankment or the bottom. CONSTITUTION: The forming method of cutoff for protecting an embankment or a bottom of a river comprises the steps of: paving geosynthetics on the surface of the embankment or the bottom(70); spraying an admixture(40) containing ceramic solidifier on the surface of the geosynthetics by a shotcrete method; and solidifying the sprayed admixture(40).
Patent KR-20040074172-A (KR)
Inventor: KIM HYEONG IL
IPC: B44D3/02
Filed: 2003-02-17
Abstract: PURPOSE: A palette having a brush keeping case is provided to easily use various kinds of brushes by keeping brushes therein, be convenient for keeping and carrying, and protect brushes during moving. CONSTITUTION: The palette(A) has an upper frame(a) and a lower frame(b) which are hinged each other, thereby opening and closing the palette. A receiving part(3) is formed at one side of the lower frame(b). A strut(1) has a hinged axis(13) which is rotated at one side thereof and a spacer(11) that has a connection recess(12) at the other side thereof. The strut(1) is formed to be rotatable. A connecting projection(2) is installed at a position corresponding to the connection recess(12). A fixing hole is installed at the lower side of the strut(1). A partition wall is formed at one side of the lower part of the receiving part(3). A preventing plate is formed in one body with the partition wall at the upper end of the partition wall, and a tightening hole is installed at the rear part of the partition wall. An insert hole is hinged rotatably, in which another hinged axis is formed at the end of the rear part thereof.
Patent KR-20040074745-A (KR)
Inventor: LEE GWANG HO
IPC: H04B1/40
Filed: 2003-02-18
Abstract: PURPOSE: A dynamic RAM having a static RAM for mobile terminal is provided to reduce a space occupied by a memory on a circuit board by simplifying a bus line. CONSTITUTION: An address buffer(302) receives address signals(A0-An) from the outside, and buffers/outputs them. A static RAM region(304) reads/writes data from/to a specific address of a static RAM cell(314) according to an address signal received from the address buffer(302). A synchronous dynamic RAM region(306) reads/writes from/to a specific address of a synchronous dynamic RAM cell(318). An output buffer(308) buffers output data from the static RAM region(304) and the dynamic RAM region(306) and outputs them(DQ0-DQ15). A timing register(310) receives control signal including a system clock and controls a memory(202).
Patent KR-20040076053-A (KR)
Inventor: LEE BYEONG TAE
IPC: H01J29/76
Filed: 2003-02-24
Abstract: PURPOSE: A deflection yoke for a CRT is provided to prevent distortion distribution at a top and bottom of center axis in the deflection yoke by forming an inner diameter of aperture part in a ferrite core with a track shape. CONSTITUTION: A CRT comprises a panel having a phosphor surface, a funnel, an electron gun, and a deflection yoke. The deflection yoke includes a horizontal/vertical deflection coil(231,233) for deflecting horizontally and vertically electron beams emitted from the electron gun; a ferrite core(234) for reducing the loss of magnetic force generated from the deflection coils; and a holder(232) for fixing the deflection coils and the ferrite core and insulating the horizontal deflection coil from the vertical deflection coil. At least one phosphor side aperture section of the horizontal/vertical deflection coils is square and the ferrite core is formed with a track shape constituted by a semicircular section and a straight section.
Patent KR-20040081546-A (KR)
Inventor: KO GYEONG CHAN
IPC: D06M11/83
Filed: 2003-03-13
Abstract: PURPOSE: Exothermic fiber sheet is characterized by preparing fabric comprising temperature controlling yarn containing a phase change material, coating fiber with conductive carbon, gold, silver, copper and nickel and having temperature controlling function. The exothermic fiber sheet is useful for sportswear for winter, sporting goods and bedclothes. CONSTITUTION: Exothermic fiber sheet having temperature controlling function is obtained by preparing fabric woven out of grey yarn containing a phase change material and coating one side of the fabric with 10-80wt.% of a conductive material based on fiber weight except a coating layer. The conductive material is gold, silver, nickel, copper and carbon.
Patent KR-20040081660-A (KR)
Inventor: AHN HWANG JAE
IPC: F25B43/00
Filed: 2003-03-15
Abstract: PURPOSE: A receiver dryer is provided to reduce the number of parts and operation processes, to cut down the manufacturing cost, and to improve productivity by closing the bottom side of a tank of the receiver dryer and integrating a penetrated inlet pipe with the tank. CONSTITUTION: A receiver dryer(100) is composed of a tank(110), a filter(130), and a cap(120). The upside of the tank is opened, the tank has a penetrated inlet pipe(111) integrated at the inside of the closed bottom side and detachably combines with a refrigerant inlet pipe(2a) at the outside by combining units(200). The filter is installed in the tank to pass the refrigerant moving in through the inlet pipe. The cap closes the opened side of the tank and has an outlet pipe(140) passing through the filter and extending to the lower side of the tank to discharge the refrigerant passing through the filter.
Patent KR-20040086033-A (KR)
Inventor: NAM SANG GYEONG
IPC: B66D1/58
Filed: 2003-04-17
Abstract: PURPOSE: In using an air winch or hoist for a lift work, an air pressure supplied to an air motor is stopped automatically when an overload is applied. CONSTITUTION: An air motor(2)is connected to an air supplier. A drum is rotated by a planetary carrier fixed by a torque arm to wind a wire. A main control valve(5) is installed between the air supplier and the air motor to control air pressure. A control valve(6) is installed between the air supplier and the main control valve to control signal to convert the main control valve. A load detecting member detects load applied to the torque arm. A link(16) rotates when the load is over a limit. A limit valve(17) is installed to control air pressure supplied to a pilot valve.
Patent KR-20040094116-A (KR)
Inventor: PARK KYUNG DUK
IPC: C10L5/48
Filed: 2003-05-01
Abstract: PURPOSE: Provided is a method for manufacturing solid fuel using waste materials of electric home appliances which regenerates by-product of the waste materials of electric home appliances as a raw material. CONSTITUTION: The method comprises steps of (a) crushing disused electric home appliances in a crusher; (b) sorting out non-metallic by-products from the crushed electric home appliances; (c) measuring content of thermoplastic in the non-metallic by-products; (d) adding thermoplastic to the non-metallic by products to make the thermoplastic content of the non-metallic by-products become not less than 20 wt.% when it is not more than 20 wt.%; (e) passing the non-metallic products through a cylindrical body having a hot-air drier to control the moisture content by eddy air; (f) storing the moisture-content controlled non-metallic by products in a hopper; (g) pulverizing the non-metallic by-products measured by the hopper in a friction type melt-mixer to evenly mix them; (h) melting the thermoplastic components of the non-metallic by-products in the fiction type melt-mixer with getting tangled with the waste electric home appliance by-products fragments; and (i) spraying water to a lump formed when the molten thermoplastic components and the waste electric home appliance by-products are coupled to each other to form small granular pellets.
Patent KR-20040097524-A (KR)
Inventor: YOO JAE SIN
IPC: H04N19/89
Filed: 2003-05-12
Abstract: PURPOSE: A moving image coding method is provided to supply synchronous information having a predetermined macro block which configures a GOB unit, through a data hiding function during an encoding process when a multimedia image is transmitted through a network, thereby effectively processing an error hiding function. CONSTITUTION: An encoder extracts synchronous information having a predetermined macro block which configures a GOB unit, with regards to an inputted image. A system transmits the extracted synchronous information through a data hiding function during an encoding process. A decoder extracts the synchronous information transmitted through the data hiding function, and carries out an error hiding function by using the extracted synchronous information.
Patent KR-20040098971-A (KR)
Inventor: CHOI DON PIL
IPC: A23G3/02
Filed: 2003-05-16
Abstract: PURPOSE: Provided is an apparatus for manufacturing cookies which performs deep-frying, sugar syrup coating and dressing processes automatically and hygienically to mass-produce cookies within a short period of time and maintain a sugar content thereof constant. CONSTITUTION: The apparatus for manufacturing cookies is characterized by comprising a sugar syrup coating unit(100), wherein the surface of cookies transferred by a transfer part which is rotated by a motor is coated with heated sugar syrup supplied fro a container by a circulating pump; and a dressing unit(200), wherein the sugar syrup coated cookies are dressed with powder being buried thereinside on a dressing plate by up and down and back and forth vibration.
Patent KR-20030058989-A (KR)
Inventor: KIM HUI SANG
IPC: G09F21/04
Filed: 2003-05-19
Abstract: PURPOSE: An info-vision fixing structure is provided which makes it convenient to remove or install an info-vision by installing a structure in a room of an electromotive vehicle. CONSTITUTION: An info-vision body(100) is constituted with a casing(110) and a screen part(120). A body combining part(200) is combined to the above info-vision body. A connection part(300) is connected to the body combining part. And a structure combining part(400) is formed on an end of the connection part, and is combined to a handle fixing structure(20).
Patent KR-20030051557-A (KR)
Inventor: RA BYOUNG HO
IPC: G06K9/46
Filed: 2003-06-07
Abstract: PURPOSE: A system for an intelligent vehicle number recognition is provided to reduce a mistake at recognizing the vehicle number by discriminating existence of the vehicle intelligently through a video photographed in real time, recognizing and extracting the vehicle number, and selecting the most accurate vehicle number out of photographed images. CONSTITUTION: A vehicle number recognition system(100) having an image photographed in a vehicle number decoding camera(200) judges whether vehicle information exists on a corresponding image. The vehicle number recognition system(100) decodes a vehicle number. An iris(210) of the vehicle number decoding camera(200) is controlled by a combined value of an illuminance of an image received in a subject total view camera(300) and an illuminance of an image received in the vehicle number decoding camera(200). An on-off control of an illumination device(400) is executed by the calculated illuminance.
Patent KR-20050003012-A (KR)
Inventor: AHN SANG TAE
IPC: H01L21/31
Filed: 2003-06-30
Abstract: PURPOSE: A method for manufacturing a semiconductor device is provided to improve planarization property of a fluidity insulating layer by rounding the fluidity insulating layer used as an interlayer dielectric. CONSTITUTION: Patterns having high pattern density and low pattern density are formed on a semiconductor substrate(20). A fluidity insulating layer(26) is formed on the resultant structure. By partially removing the fluidity insulating layer on the center portion of the high pattern density, the height of the etched fluidity insulating layer is same to the height of the fluidity insulating layer located on the low pattern density. Then, the fluidity insulating layer is planarized by CMP(Chemical Mechanical Polishing).
Patent KR-20050004663-A (KR)
Inventor: JUNG HOI SUK
IPC: A61L2/10
Filed: 2003-07-03
Abstract: PURPOSE: Provided is a multipurpose movable sterilizer using ultraviolet for deodorizing and sterilizing diverse objects that include shoes, wind instruments using a mouth to blow air therein, socks and gloves, irrespective of places. CONSTITUTION: The multipurpose movable sterilizer using ultraviolet for sterilizing diverse objects includes a cylindrical-shaped net body(100) whose surface is coated with nano silver and photo-catalyst; a dispersion tube(200) whose upper part is made of transparent materials and a spiral(210) is formed on the lower end thereof; and a case(300) composed of a spiral groove(310) to be combined with the spiral(210), an ultraviolet LED(320) installed inside the spiral groove(310), a cell mount, and a cap(350) connected to the lower end.
Patent KR-20050005129-A (KR)
Inventor: KWON YOUNG DO
IPC: G05D1/02
Filed: 2003-07-03
Abstract: PURPOSE: A method for judging a moving obstacle using an ultrasonic sensor installed on a moving object is provided, which senses a moving obstacles in the front using the ultrasonic sensor when a platform with the ultrasonic sensor is moving. CONSTITUTION: According to the method for judging a moving obstacle using an ultrasonic sensor installed on a moving object, the ultrasonic sensor senses moving obstacles in the front of a moving object. V_estimate={d(k)-d(k-1)}/t(k), and Vo=V_estimate+Vp, where t(k) is sensing time of k(th) ultrasonic sensor and d(k) is a distance sensed by k(th) ultrasonic sensor and Vp is a moving speed of the moving object and V_estimate is a relative speed of the front obstacle as to the moving object measured by the ultrasonic sensor, and Vo is the speed of the obstacle. Only when Vo is above a fixed value, it is judged that the obstacle is moving.
Patent KR-20050007044-A (KR)
Inventor: KIM KWANG HO
Filed: 2003-07-11
Abstract: PURPOSE: A method and a system for guaranteeing the A/S(After-Service) using an A/S guarantee insurance are provided to offer satisfaction for the A/S to a customer and enable a goods seller to promote sales by helping the goods seller guarantee the A/S for the goods. CONSTITUTION: An object goods database(110) is constructed by contents of an A/S guarantee insurance contract for the goods, and makes the seller and an insurance company share data for object goods and an A/S guarantee number issued to each object goods. A seller web server(140) enables a buyer to register the bought goods by connecting to the Internet(160). A seller management server(120) is connected to the object goods database and the seller web server, and manages the data. An insurance company management server(130) communicates the data with the seller management server through the Internet and is connected to the object goods database. An A/S guarantee number generating server(180) generates the A/S guarantee number by receiving the bought goods registration data.
Patent KR-20030064360-A (KR)
Inventor: BANG KAE RIONG
IPC: A61F13/42
Filed: 2003-07-08
Abstract: PURPOSE: A method for manufacturing a diaper with a urine detecting device is provided to protect the skin of a baby from any dermatic repugnance due to the contact thereof with urine, thereby maximizing the convenience of use. CONSTITUTION: The diaper comprises a first front electrode(3) and a first rear electrode(4), which are attached to a specific portion, namely, a portion coming into contact with the pubic region of a baby, and a second front electrode(5) and a second rear electrode(6), which are attached to a portion coming into contact with the anus region. Electrode isolation fabric sheets(8) are interposed between the first electrodes as well as between the second electrodes. The electrodes are connected to a sound alarm device through a wire(7).