baber/WOPTO huggingface dataset:
Patent KR-20000025272-A (KR)
Title: Gas supply system for manufacturing semiconductor element
Inventor: KIM TAE DONG
IPC: H01L21/00
Filed: 1998-10-09
Abstract: PURPOSE: A gas supply system for manufacturing a semiconductor element is provided to minimize the variation of chamber state when exchanging a gas storage tank. CONSTITUTION: A gas supply system for manufacturing a semiconductor element comprises a gas storage tank(10) for supplying gas to a chamber(14) and a fluid controller(12) for controlling the amount of gas when performing a process. The gas supply system comprises a line(18) at a front end of the fluid controller in order prevent an injection of gas to the chamber by a vacuum pump(16) for forming the chamber to a vacuum state when exchanging the gas storage tank. The line is directly connected from the front end of the fluid controller to the vacuum pump.
Patent KR-20000025696-A (KR)
Title: Device for making plurality of processors share one port by using proxy socket and method the same
Inventor: JEE YOUNG HWA
IPC: H04L12/46
Filed: 1998-10-13
Abstract: PURPOSE: A method and a device are provided to reduce an ethernet port number and a TCP/IP(Transmission Control Protocol/Internet Protocol) selection number which is built in the ethernet port number, and share the ethernet port and a TCP/IP stack by a plurality of processors by using a proxy. CONSTITUTION: A device for making a plurality of processors share one port by using a proxy socket comprises: a master processor physically processing an ethernet port; a slave processor connected with a shared port except the master processor; and a memory storing communication data for communication between the master processor and the slave processor. A method for making a plurality of processors share one port by using a proxy socket comprises the steps of: calling out a mathematical function related to a socket, in application of the slave processor; writing contents in a memory by receiving the contents by a proxy socket processor of the slave processor; transmitting a predetermined interrupt signal to the master processor; transmitting a signal to a socket redirection process by an interrupt service routine of the master processor; and calling out a real socket as required contents by the socket redirection process.
Patent KR-20000027701-A (KR)
Title: Transparent resin composition excellent in anti-static property and preparation method thereof
Inventor: YOO KUN HUN
IPC: C08L9/00
Filed: 1998-10-29
Abstract: PURPOSE: A transparent resin composition and preparation method thereof are provided, which are characterized in that permanent anti-static agent is mixed with transparent resin, thus the composition is excellent in chemical resistance, workability, and transparency. CONSTITUTION: A method for improving anti-static property of compound uses monomers like meta-acryl acid, acryl acidic alkyl ester compound, aromatic vinyl compound, or vinyl cyan compound. These monomers are added to poly butadiene rubber and are grafted. Then, an anti-static agent such as poly amide elastomer, polyester elastomer, or degenerated vinyl compound is added. This plastic compound controls contents of each component, so refraction efficiency is appropriate.
Patent KR-20000027824-A (KR)
Title: Charge pump for semiconductor device
Inventor: JIN KYONG CHEON
IPC: G11C11/40
Filed: 1998-10-29
Abstract: PURPOSE: A charge pump for semiconductor device is provided to make the transportation of charge smooth by using PMOS diode, and to achieve efficient pumping by removing the threshold voltage. CONSTITUTION: A power supply part(10) controls the supply of source voltage(Vdd) by a first PMOS(P1). A first charge pumping part(20) consists of a first capacitor(C1) for charge pumping in case that a first clock signal(CLK1) and a second PMOS(P2) to transmit charges to the first capacitor(C1). A second charge pumping part(30) consists of a second capacitor(C2) for charge pumping in case that a second clock signal(CLK2) and a third PMOS(P3) to transmit charges to the second capacitor. A third charge pumping part(40) consists of a third capacitor(C3) for charge pumping in case that the first clock signal(CLK1) and a fourth PMOS(P4) to transmit charges to the third capacitor. A fourth charge pumping part(50) consists of a fourth capacitor(C4) for charge pumping in case that the second clock signal(CLK2) and a fourth PMOS(P4) to transmit charges to the fourth capacitor. A first to a fourth control parts(12,22,32,42) control the operations of the first to the fourth PMOSs(P1,P2,P3,P4) respectively.
Patent KR-20000031697-A (KR)
Title: Method for exchanging control commands in audio/video device
Inventor: YOO BYUNG SEOK
IPC: H04L12/403
Filed: 1998-11-09
Abstract: PURPOSE: A method for exchanging control commands in audio/video device is provided to exchange control commands of an audio/video equipment by using a simple control command exchange method. CONSTITUTION: A method for exchanging control commands in audio/video device comprises the steps of a transmission process and a display process. The transmission process is to transmit control command data corresponding to audio/video equipment control functions. The display process is to display an audio/video equipment control command screen according to the transmitted control command data corresponding to audio/video equipment control functions.
Patent KR-20000034032-A (KR)
Title: Structure of mounting cushion of air cleaner for vehicle
Inventor: KANG SEONG DEOK
IPC: F02M35/00
Filed: 1998-11-27
Abstract: PURPOSE: A structure of a mounting cushion of an air conditioner is provided to buffer indoor noise by effectively blocking up the vibration transmitted to a vehicle body of an air cleaner by minimizing contacting area of a mounting cushion used and a vehicle body. CONSTITUTION: An insertion hole(32a) of a fixed bracket(33) is inserted to an insertion groove(42) formed in the medial of a body(41) of a mounting cushion(40) formed of rubber. Herein, the cushion is distorted by the property of rubber, and the insertion groove having many first annular grooves(42a) and formed in the medial of the body of the mounting cushion is forcibly inserted to an insertion hole(33a) of the fixed bracket and to a combining hole(34a) of an insertion part(34). A metallic spacer(50) is inserted via an insertion hole(43) of the body, so the mounting cushion is supported. A through hole formed on the vehicle body of an engine room is coincided with the inner diameter of the spacer, and then the through hole and the inner diameter of the spacer are combined and fixed by a bolt and a nut. Then an air conditioner is mounted on the vehicle body. Herein, the contacting area is minimized because annular recessed grooves(42a) are formed on the upper and lower faces of the body of the mounting cushion by maintaining a concentric circle. Thereby, the vibration generated in the air cleaner and transmitted to the vehicle body is minimized.
Patent KR-20000045380-A (KR)
Title: Method for manufacturing transistor of semiconductor device
Inventor: KIM JONG HWAN
IPC: H01L27/00
Filed: 1998-12-30
Abstract: PURPOSE: A method for fabricating a transistor of a semiconductor device is provided to ensure the high integration of the semiconductor device by improving a contact resistance of a metal circuit. CONSTITUTION: A cell well(2) and an isolation layer(3) are formed on a cell area of a semiconductor substrate(1). A photoresist pattern(4) is formed for exposing a gate electrode area of the semiconductor substrate(1). Impurities are implanted on the semiconductor substrate(1) by using the photoresist pattern(4) as a mask. Then, nitrogen is implanted by using the photoresist pattern(4) as a mask. A gate insulating layer, a conductive layer(8) for a gate electrode. And an antireflection layer(9) are sequentially formed on the semiconductor substrate(1). Then, the structure is etched by using a gate electrode mask, wherein some of the gate insulating layers remain. An LDD impurity junction portion(11) is formed on the semiconductor substrate(1).
Patent KR-20000045718-A (KR)
Title: Antenna driving device of a vehicle
Inventor: HONG SANG SEOK
IPC: H01Q1/32
Filed: 1998-12-30
Abstract: PURPOSE: An antenna driving device of a vehicle is provided to reduce the size of a PCB and minimize the size of the antenna by electronically driving the antenna. CONSTITUTION: An antenna driving device of a vehicle comprises a first constant voltage converting section(21), a second constant voltage converting section(22), a first switching section(31), a second switching section (32), a first relay section(41), a second relay section(42), a motor(50), an over-current detecting section(60), a first over-current controlling section(71), and a second over-current controlling section(72). The first over-current controlling section(71) controls the first switching section to be turned off by the voltage which is applied from the over-current detecting section(60). The second over-current controlling section(72) controls the second switching section to be turned off by the voltage which is applied from the over-current detecting section(60).
Patent KR-20000046367-A (KR)
Title: Method for processing atm management message between atm switch and telecommunication management network management system
Inventor: CHOI KI HOON
IPC: H04L12/801
Filed: 1998-12-31
Abstract: PURPOSE: A method for processing ATM management message between an ATM switch and a TMN(Telecommunication Management Network) management system is provided to easily obtain the procedure giving and taking reciprocally management message between the TMN management system and the ATM switch. CONSTITUTION: TMN agent(21) transmits a predetermined request message to an ATM switch(30). The ATM switch transmits a confirmation message to the TMN agent, and transmits a response message in connection with the request message to the TMN agent. Then, the TMN agent transmits a confirmation message to the response message to the ATM switch.
Patent KR-19990035793-A (KR)
Title: 전기 어큐뮬레이터를 수용하기 위한 밀봉된 케이싱
IPC: H01M10/02
Filed: 1997-05-21
Abstract: 본 발명에 따른 밀봉된 케이싱은 내부 가스의 일정 수준의 압력을 극복하기 위해 제공되며, 벽(8,9)의 두 에지를 연결하기 위해 플라스틱 밴드(11)에 의해 형성된 하나 이상의 폐쇄 영역(10)을 갖는 벽(1)에 의해 형성된다.  이 폐쇄 영역은 밴드(11)가 부착된 접착부(12A,12B)와 밴드가 간단히 고착된 조임부(13)를 가진다.  따라서, 과도한 압력의 영향으로 플라스틱 밴드는 케이싱에서 이동하여 외부에 개방부(15)를 형성하므로, 지나친 가스가 배출될 수 있다.
Patent KR-19990087406-A (KR)
Title: 원격 통신 시스템에서의 적응성 주파수 할당
IPC: H04W16/04
Filed: 1997-02-24
Abstract: 원격 통신 네트워크에서, 채널들을 할당하는 방법 및 장치는 사용중이거나 사용할 수 있는 채널들 및 사용 가능하게 될 수 있는 채널에 대한 신호 품질 측정을 한다.  미약한 신호 품질 특성들을 나타내는 이미 선택된 채널(즉, 사용중이거나 사용 가능한 채널들)은 양호한 신호 품질 특성을 나타내는 후보 채널(즉, 사용 가능하게 될 수 있는 채널들)들로 교환됨으로써 네트워크의 전체 신호 품질을 향상시킨다.
Patent KR-20000064540-A (KR)
Title: 평편안테나의자동차창문내측장착용안테나배선
IPC: H01Q1/32
Filed: 1996-12-12
Abstract: 차량기기와 차량 외부의 송신기 및/또는 수신기간에 무선 통신을, 특히 GHz-대역 주파수로 무선통신을 할 목적으로 평편 안테나를 자동차의 창문 내측에 장착할 수 있도록 한 안테나 배선에 있어서, 창문(3)의 유전율과 대기중에 있는 유전율과의 사이에 속하는 소정의 유전율을 갖는 유전체 중간장치(4)를 보다 큰 방사각 내지 수신각에 걸쳐 감쇠가 동일하게 적게 일어나도록 하는 방향으로 삽입함으로써 안테나(2)의 지향특성은 영향을 받게 된다. 또한 상기 글래스와 안테나와의 거리는 작게 축소되는 것이 바람직하다.
Patent KR-20000010908-A (KR)
Title: Polymerization reaction catalyst accelerator
Inventor: NUDENBERG WALTER
IPC: C08F10/02
Filed: 1997-04-23
Abstract: PURPOSE: In a producing method of alpha-olefine copolymer, transition metal catalysts, most commonly V catalyst, and organic-aluminium cocatalysts are added to reactant mixture and act as catalysts. Catalyst activators or accelerators can be selected for the intention of catalyst efficiency and the regulation of polymer molecular weight. CONSTITUTION: The invention relates to the compounds of formula 4, preferably the compounds of formula 5. In formula 1, n is 1, 2, 3, X1 and X2 are independently C or Br, A is O or S, R1 is H or alkyl, aryl, alkylidene, or CH2OR, R3 is H, Cl, Br, or OR6, and R4 is H, alkyl, aralkyl, alkenyl or aryl. And R5 is H, alkyl, aralkyl, alkenyl or aryl, and R6 is H or alkyl, wherein R3 do not exist when R2 is alkylidene.
Patent KR-20000050475-A (KR)
Inventor: LEE HYUN SEOK
IPC: G02B6/44
Filed: 1999-01-11
Abstract: PURPOSE: An apparatus for manufacturing a ribbon optical fiber is provided to improve the productivity of the ribbon optical fiber and reduce the area which is occupied by an equipment for manufacturing the ribbon optical fiber. CONSTITUTION: An apparatus for manufacturing a ribbon optical fiber comprises an optical fiber transmitting section(310), a coating section(320), a hardening section(330), a first winding section(340), and a second winding section(350). The optical fiber transmitting section(310) transmits the optical fiber, and uses a plurality of pay-offs. The optical coating section(320) coats the optical fiber transmitted from the optical fiber transmitting section(310). the hardening section(330) hardens the ribbon optical fiber which is coated at the coating section(320) with the ultraviolet beam. The first and second winding sections(340,350) wind the ribbon optical fiber which is hardened at the hardening section(330).
Patent KR-19990067889-A (KR)
Title: 활동형틀장치의 형틀재
IPC: E04G11/28
Filed: 1999-01-14
Abstract: 본 발명은 활동형틀장치에 관한 것으로서, 콘크리이트에 대한 형틀의 연절성을 보다 향상시킴으로써, 장시간 작업정지상태로 부터 상승동작을 원활하게 행할 수 있도록 한 활동형틀장치의 형틀재를 제공한다. 
     작업상량(10)의 하부에 그 수평방향에 따라 이동가능하게 배치된 지지요우크(12)와, 이 지지요우크(12)의 하부에 대향 배치된 형틀(22)과, 이 형틀(22)상에서, 콘크리이트(C)중에 매설된 주근이 되는 로드(34)에 계합하여 이 로드(34)를 따라 지지요우크(12)를 상방으로 상승시키는 반력잭(32)을 구비하며, 이 반력잭(32)에 의한 상승동작에 수반하여 지지요우크(12)와 함께 형틀(22)을 상승시키는 활동형틀장치에 있어서, 상기 형틀(22)의 콘크리이트(C)와 접하는 내면측에는 활성이 풍부한 수지소재인 테프론시이트(42)를 일체적으로 배치하고 있다.
Patent KR-20000051530-A (KR)
Inventor: HAN YOUNG HWA
IPC: D01F1/00
Filed: 1999-01-22
Abstract: PURPOSE: Provided is a process for producing a polyurethane elastic large package which has reduced poor percentage during a process. Thereby, it is possible to produce a polyurethane elastic large package which has excellent processibility. CONSTITUTION: A process for producing a polyurethane elastic large package comprises: extruding a polyurethane elastic yarn less than 40denier to rewind the yarn through a spinning roller to corn of winder such that rewinding quantity is 1-1.5kg and rewinding width is less than 55mm. A speed of the winder is V3, a speed of inherent spinning roller is V1 and a speed of a second spinning roller is V2. A shrinkage of polyurethane elastic yarn is no more than 7%. An aliphatic acid metal salt impregnated to the polymer has calcium, magnesium and lithium as metal component, and saturated and unsaturated aliphatic acid of 10-22 as aliphatic acid. The aliphatic acid salt is used to amount of 0.2-2% by weight based on yarn weight.
Patent KR-20000054919-A (KR)
Inventor: LEE HUI CHEOL
IPC: H01J9/20
Filed: 1999-02-01
Abstract: PURPOSE: A flat mask and a method of fabricating a shadow mask for a cathode ray tube are to prevent a partial-deformation of a punched portion of shadow mask, which has an electron beam passing hole. CONSTITUTION: A flat mask comprises a punched portion(14b) on which a plurality of electron beam passing holes(14a) are formed, and a skirt portion(14c) which is formed at edges of the punched portion at a desired distance. At least a pair of opposite faces of the punched portion, which is placed at a circumference of the punched portion in an opposite angle direction, is formed to be inclined. A method of fabricating a shadow mask(14) for a cathode ray tube comprises of steps forming a plurality of electron beam holes in which at least a pair of surfaces are inclined at a circumference of a punched portion, forming a plurality of electron beam holes in which the inclined surfaces is not formed in other portion of the punched portion except for the circumference of the punched portion to form a flat mask(140), and forming a skirt portion on the flat mask.
Patent KR-19990072535-A (KR)
Title: 플라즈마디스플레이패널용배면판의제조법
IPC: G03F7/004
Filed: 1999-02-10
Abstract: 본 발명은 복수의 볼록부를 가지는 기체(substrate)를 이용하여, 이 기체에 대응하는 형상의 장벽재료 및 형광체 함유 수지조성물로 구성되는 패턴을 기판상에 형성하고, 다음으로, 소성하는 것을 특징으로 하는 플라즈마 디스플레이용 배면판의 제조법에 관한 것이다. 
     본 발명에 따른 플라즈마 디스플레이 패널용 배면판의 제조법은, 작업성이 좋고, 저 에너지로 치수 정밀도가 뛰어난 플라즈마 디스플레이 패널용 배면판을 양호한 수율로 제작할 수 있다. 또한 본 발명에 따른 디스플레이 패널용 배면판의 제조법은 컬러 표시가 가능한 플라즈마 디스플레이 패널용 배면판의 제조법을 제공하는 것이다.
Patent KR-20000055877-A (KR)
Inventor: JANG JIN
IPC: H01L21/20
Filed: 1999-02-10
Abstract: PURPOSE: A polycrystalline silicon including nickel is provided to prevent an intrinsic characteristic of a silicon thin film from being changed by a contamination of a metal, by optimizing the quantity of the metal remaining in the silicon thin film. CONSTITUTION: Nickle atoms of an average from 2 multiplied by 10¬17 centi meters¬-3 to 5 multiplied by 10¬19 centi meters¬-3 are included in a polycrystalline silicon composed of crystallites and crystal boundary. The polycrystalline silicon formed on an insulating substrate is formed as a needle-like crystallites.
Patent KR-19990072785-A (KR)
Title: 자기헤드장치및기록매체드라이브
IPC: G11B5/016
Filed: 1999-02-19
Abstract: 본 발명은 대용량 플로피 디스크 등에 적용하기에 적절한 자기 헤드 장치 및 디스크 드라이브에 관한 것이다.  제1 및 제2 레일이 디스크 트랙의 접선 방향(R)으로 연장되고 서로에 평행하도록 각각의 자기 헤드 소자(20)의 슬라이더 상에 돌출된 형상으로 디스크 측면 상에 구비된다.  디스크의 기록 표면과 접촉하는 상태 및 표준 기록 밀도 상태에서 데이터를 기록 및 재생하기 위한 헤드 칩이 사실상 제1 레일의 중심 위치에 구비된다.  디스크의 기록 표면으로부터 부상된 상태 및 고기록 밀도 상태에서 데이터를 기록 및 재생하기 위한 다른 헤드 칩이 트랙의 접선 방향(R)에 대해 제2 레일(26b)의 후방 측면 상의 위치에 구비된다.  각 자기 헤드 소자의 제1 레일의 폭은 제2 레일의 폭보다 좁다.  슬라이더는 제2 레일이 디스크의 기록 표면에 접근하도록 경사지고 부상된다.
Patent KR-20000061091-A (KR)
Inventor: KWON SUN CHAN
IPC: H04B1/40
Filed: 1999-03-23
Abstract: PURPOSE: A method for controlling a tone level for a separative terminal of a wireless local loop system is provided to easily control the tone volume in a common telephone without increasing fabrication cost of the separation type terminal. CONSTITUTION: A key value according to a tone level and a key value data according to the key value are set(S1). If a dual tone multi-frequency(DTMF) signal generated when a key button of a common telephone set is pushed is inputted into a DTMF receiving unit through a subscriber line interface circuit of a separation type terminal, a key value data corresponding to the inputted DTMF signal is generated(S2). IF the key value data is inputted to a microprocessor unit, a tone volume value according to the inputted key value data is operated(S3). When the operated tone volume value is transmitted to a CODEC through a vocoder, a tone volume of the codec is adjusted according to the operated tone volume value(S4).
Patent KR-20000061108-A (KR)
Inventor: KANG CHANG MIN
IPC: G01D9/00
Filed: 1999-03-23
Abstract: PURPOSE: An apparatus for evaluating vehicle driving is provided to precisely examine reasons of accidents, and help drivers to drive more appropriately for preventing traffic accidents in advance. CONSTITUTION: An apparatus for evaluating vehicle driving includes an accelerometer(101) for measuring an acceleration of a vehicle, first and second amplifiers(102,103) for respectively amplifying X,Y accelerations obtained by the accelerometer to a predetermined level, an A/D converter(104) for converting X,Y accelerations obtained by the amplifiers into digital signals, a high speed microcomputer(105) for comparing and analyzing velocity data obtained by a speedometer of the vehicle with the accelerations obtained by the A/D converter for extracting driving data of a sudden acceleration, a sudden braking, and a sudden turning, a power supply part(106) for supplying driving power to each element by using a battery power of the vehicle, a timer(108) for supplying a current time data, a switch(111) for discriminating detachment of the testing apparatus, and a microcomputer(109) for storing all data obtained by the above component elements to an EEPROM(110).
Patent KR-20000062046-A (KR)
Inventor: LEE CHANG JIN
IPC: C12G3/04
Filed: 1999-03-30
Abstract: PURPOSE: An alcoholic beverage containing charcoal is provided, which can alleviate toxicity, remove odor by anion, being emitted from the charcoal, thereby useful for maintaining homeostasis of human. CONSTITUTION: To achieve the above objects, charcoal is pulverized into fine powders. After treating the fine charcoal powders to be non-toxic to human, an effective amount of powder is added in a conventional preparing process of alcoholic beverage.
Patent KR-19990083617-A (KR)
Title: 처리명령언어를이용하여태그기초형디스플레이언어를실행하기위한방법및장치
IPC: G06F9/44
Filed: 1999-04-29
Abstract: 본 발명은, 다양한 다른 태그 기초형 마크업 언어 문서들이, 그 마크업 언어 문서들을 공통의 실행가능한 컴퓨터 프로그램 형태로 콤파일링 시킴으로써 한정된 자원의 콤퓨팅 장치들에 의해 이용될 수 있는 시스템을 제공한다. 번역 시스템은, 문서를 체계적으로 분석하여 문서의 내용 및 태그 기초형 의미들을 내포하는 상응 컴퓨터 프로그램을 발생시키는데 적합하다. 전달 시스템은, 발생된 컴퓨터 프로그램을 클라이언트 컴퓨터 시스템으로 전송한다. 클라이언트 컴퓨터 시스템은, 출력장치에 디스플레이를 발생시키고 입력장치로부터 입력치가 수신되는 것을 허용하기 위해, 다목적 컴퓨터 프로그램 실행 환경에서 상기 발생된 컴퓨터 프로그램을 실행할 수 있다.
Patent KR-20000073619-A (KR)
Inventor: PARK YEON SOO
IPC: A01G27/00
Filed: 1999-05-08
Abstract: PURPOSE: Automatic water-supply apparatus with water-pressure timer provides water of prescribed quantity according to water-pressure and magnetic force, compressed air, water pressure energy according to fixed time interval by accumulated compressed air and automatic-cut water supply after finishing to provide water, provides and intercepts water automatically without consuming electric power by controlling the long and the short of time to provide and cut, supply quantity of water etc. voluntarily. CONSTITUTION: Automatic water-supply apparatus with water-pressure timer is characterized by inserting packing(3) in the ring-shaped sill(2) bottom of nonmagnetic pipe(1) lower inside wall; inserting and installing for upper direction handle(6) of valve(5) fixed with permanent magnet(4); inserting packing(10) on ring-shaped sill(20) and uniting valve(5) to male screw of nonmagnetic pipe(1) after fixing spring(8) to projecting bar(7); cutting hose(16) to water pipe(11) with built-in switching ball(14) on packing(13) of ring-shaped sill(12) upper part of the water pipe(11); uniting locking nut(17) on the nonmagnetic pipe(1) upper part intubated hose(16); perforating hole(19) in the bottom of the cylinder(18) of nonmagnetic pipe(1) side; sticking permanent magnet(23) to horizontal hole(5) of piston(22) inserted O-ring(21); equipping the piston(22) to cylinder(18) after pushing L-letter shape of steel plate(24) in groove(26); uniting cover(29) inserted O-ring(28) to upper end female screw of compressed room(27); equipping cock(33)(38) with hole in the pipe(31)(35) to connect upper and lower end of compressed room(27) and exclusive compressed room(30).
Patent KR-20000073869-A (KR)
Inventor: KANG SEOK WEON
IPC: E03B9/04
Filed: 1999-05-10
Abstract: PURPOSE: A case for protecting a water gauge is provided to exactly charge for water by avoiding a damage to the water gauge or a wrong action, to save repair costs and to improve an ambient atmosphere. CONSTITUTION: A heating member is adhered to a lower part of both pipe connectors(9,10) and a body of a water gauge. In this state, a cover(2) is adhered to the heating member(5) upon installing a protective case in a water gauge(7). Another heating member(6) is coupled to cover an upper part of the water gauge. A protrusion and a groove of the heating members are coupled each other to keep tightness. A cover(3) is inserted from an upper part and coupled with the lower cover(2). The upper cover is strongly pressed and plural protrusions are firmly connected with grooves. Then after assembling the protective case, the water gauge is heated by closing a lid(4).