baber/WOPTO huggingface dataset:
Patent KR-20000008649-A (KR)
Title: Process for preparing quasi-alloyed, fused zinc plated steel sheet
Inventor: LEE SEOK KYU
IPC: C23C2/06
Filed: 1998-07-15
Abstract: PURPOSE: The process for preparing quasi-alloyed, fused zinc plated steel sheet which can increase the amount of plating adhesion to provide an improvement in corrosion resistance and further ensure a high processibility is desired. CONSTITUTION: The process comprises plating the steel sheet at a plating amount of 30-100 g/m2 in a fuzed zinc plating bath containing 0.14-0.17% of aluminum and then alloying the sheet at 460-490°C to 6-8% of alloying degree.
Patent KR-20000012861-A (KR)
Title: Programmable decoder and decoding method using thereof
Inventor: KIM WON MAN
IPC: G06F7/00
Filed: 1998-08-01
Abstract: PURPOSE: A programmable decoder and decoding method using thereof is provided to reduce time of system organization and improve compatibility and simplify structure and easily embody a single chip. CONSTITUTION: The programmable decoder and decoding method using thereof comprises a first storing unit, a mode distinction unit, a counter unit, an address storing unit, a second storing unit, a switching unit, and a compare unit. The first storing unit stores an output signal of central processing unit(CPU). The mode distinction unit determines a program mode and decoding mode by the output from the first storing unit. The counter unit determines number of peripheral device by a control signal of the mode distinction unit. In program mode, the address store unit stores a starting address of peripheral device and the number of peripheral device by the counter. In decoding mode the second storing device stores a real address of peripheral device. The switching unit switches an output signal of CPU to the second storing unit or the address storing unit by the control signal from the mode distinction unit. And the compare unit compares the real address peripheral device with the starting address of peripheral device.
Patent KR-20000012962-A (KR)
Title: Voice signal test apparatus and control method thereof
Inventor: LEE YU SHIN
IPC: H04Q1/00
Filed: 1998-08-03
Abstract: PURPOSE: A voice signal test circuit and control method thereof is provided to test a voice signal inside of testing apparatus. CONSTITUTION: The voice signal test apparatus includes a key input part(115), a relay part(119), a voice test signal generating part(117), and a control part(111). The key input part includes a voice signal testing key and a large number of key which are to test a voice signal. The relay part is to interface between an exterior measure module and an interface test module according to a prescribed control. The voice test signal generating art is to generate an analog voice signal of a prescribed range to test a voice signal of the test module according to a prescribed control. The control part is to input a key signal generated in the key input part, transmit a signal requiring a voice test signal generation to the voice test signal generating part when the inputted signal is a voice signal testing key signal, receive a voice test signal from the voice test generating part to transmit to the test module part through the relay part, receive a voice test signal result date being generated from the test module part after transmitting the voice test signal, and transmit the received voice test signal result date to the test module through the relay part.
Patent KR-20000014452-A (KR)
Title: Apparatus and method for processing a picture of a front monitor and a rear monitor using a vdp
Inventor: KWAK HUI SEOK
IPC: G09G5/00
Filed: 1998-08-21
Abstract: PURPOSE: An apparatus and method for processing a picture of a front monitor and a rear monitor using a VDP is provided, which controls a picture of a front monitor and a rear monitor using one VDP in a car audio/video system. CONSTITUTION: The apparatus for processing a picture of a front monitor and a rear monitor using a VDP comprises: a VDP board (100) for outputting a vertical/horizontal synchronizing signal; a navigation (200) for displaying a map picture on a monitor; a TV tuner (300) for displaying a television picture on the monitor; a video switch unit (400) for selectively outputting a video signal to a monitor unit according to a control signal provided from a microcomputer; a RGB switch unit (500) for selectively outputting a RGB signal to the monitor unit according to the control signal; and a synchronizing switch (600) for inputting a vertical reset and a horizontal reset for displaying a phrase. Thereby, it is possible to have a considerable competitive power in a cost.
Patent KR-19990024045-A (KR)
Title: 양방향 전압 클램핑을 하는 트렌치-게이트로 제어된 ｍｏｓｆｅｔ
IPC: H01L29/78
Filed: 1998-08-28
Abstract: 본 발명은 트렌치-게이트로 제어된 MOSFET에 관한 것으로서, MOSFET의 게이트는 다수의 셀을 정의하는 트렌치 격자에 위치하고, 대부분의 셀은 MOSFET을 포함하지만, 격자내 소정 위치에서의 선택된 수의 셀은 PN 다이오드 또는 쇼트키 다이오드를 포함하며, PN 및 쇼트키 다이오드는 MOSFET 셀에서 채널과 병렬로 연결되어, 그 음극이 MOSFET 셀내 기생 다이오드의 음극과 연결되고 그 양극이 기생 다이오드의 양극과 연결되며, (기생 다이오드가 역바이어스되고) MOSFET이 정상적인 방향으로 바이어스되는 경우, PN 다이오드는 장치를 위한 예측가능한 항복전압을 제공하고, 항복에 의해 생성된 핫 캐리어가 트렌치 월을 나누는 산화층을 손상시킬 수 없는 경우 트렌치 게이트로부터 먼 위치에서 애벌란시 항복이 발생한다는 것을 보장하며, 장치가 반대 방향으로 바이어스되는 경우, 쇼트키 다이오드가 전도하여 다이오드 및 MOSFET 셀내 PN 접합에서 충전 저장을 제한하고, 이것은 그 바이어스가 다시 정상적인 방향으로 스위치되는 경우 장치의 역방향 복구 특성을 개선하며 MOSFET내의 전력 손실을 감소시키는 것을 특징으로 한다.
Patent KR-20000018404-A (KR)
Title: Deflection coil winding machine and synchronous rotating control method
Inventor: LEE WON HUI
IPC: H01J9/236
Filed: 1998-09-02
Abstract: PURPOSE: A method is provided to prevent the quality defect of deflection coil by minimize a vibration of servo motor for wiring type driving. CONSTITUTION: A method comprises the step of: driving a servo motor for one wiring type driving by PI(proportional integration) control signal, a servo motor for other wiring type driving by P(proportional) control signal, when a first wiring type and a second wring type is connected each other; wiring a coil by synchronous rotating the servo motor for the both wiring type driving; and driving the servo motor for the wiring type driving by PI control signal and restoring the servo motor for the wiring type driving to original situation, if the coil wiring is completed by the above step and the first wiring type and the second wring type is separated.
Patent KR-20000018917-A (KR)
Title: Rotor disk fabricating method of disk-shaped motor
Inventor: PARK JIN SU
IPC: H02K15/02
Filed: 1998-09-07
Abstract: PURPOSE: A method for fabricating a rotor of a disk-shaped motor is provided to achieve easy fabrication and assembly, and prevent separation of a part caused by the centrifugal force. CONSTITUTION: A method for fabricating a rotor of a disk-shaped motor comprises the steps of mixing permanent magnet material powder with consolidating material powder to form mixed powder, shaping the mixed powder as a shape of a rotor disk having a predetermined thickness and a circular area, crystallizing the shaped rotor disk, and fixing the crystallized rotor disk.
Patent KR-20000019292-A (KR)
Title: Apparatus and method for recording re-recordable optical disk
Inventor: YOON DOO SUP
IPC: G11B7/1263
Filed: 1998-09-10
Abstract: PURPOSE: An apparatus and method for recording a re-recordable optical disk is provided, which improves a cross-erase in a land/groove recording and reproducing method. CONSTITUTION: The apparatus for recording a re-recordable optical disk comprises: a control unit (140) for reading a mark and a space of a reproducing signal reproduced from a recording track and generating an optical output level to a mark and a space of a recording modulation recording signal according to the read mark and space; and a pick-up (120) for converting a sum/subtraction value of the optical output level set in the control unit (140) and a reflected optical signal level into a current signal, and adjusting a laser output. Thereby, it is possible to improve a cycle ability in an overwriting track.
Patent KR-19990044821-A (KR)
Title: 디지털 통신 수신기를 위한 향상된 검파
IPC: H03M13/23
Filed: 1998-09-14
Abstract: 인터심볼(intersymbol) 간섭을 받는 디지털 통신 시스템의 검파신호 대 잡 음(SNR)비를 개선하는 신규의 검파 시스템이 설명되어 있다.    이 검파 시스템은 통신 채널의 분산 성질에 의해 생성된 인터심볼 간섭내에 포함된 샘플 전력을 이용한다.     통상적으로 사용되는 결정귀환등화기(DFE) 와 선형등화기에 비해 상당한 SNR 이점들이 실현된다.
Patent KR-20000021408-A (KR)
Title: Wafer cooling apparatus of heat exchange type
Inventor: KIM HYEONG GWAN
IPC: H01L21/68
Filed: 1998-09-29
Abstract: PURPOSE: A wafer cooling apparatus of a heat exchange type is to extend a circulation passage of a cooling water to a wafer pedestal and thereby enhance the cooling efficiency of the wafer. CONSTITUTION: A wafer cooling apparatus comprises: a cathode(11) for radiating heat, the cathode having a cooling water passage(21a) formed at the inside thereof; and a wafer pedestal(13) that is installed on the cathode and on which a wafer is mounted, the wafer pedestal having a U-character shaped second cooling water passage(21b) formed at the inside thereof. The cathode is coupled to the wafer pedestal by an O-ring(25) such that the first cooling water passage communicates with the second cooling water passage. A packing(19) is provided at a coupled portion between the wafer pedestal and the cathode to prevent the cooling water from being leaked.
Patent KR-19990036886-A (KR)
Title: Ｖ형 엔진
IPC: F01M11/02
Filed: 1998-10-07
Abstract: 본 발명은 V형 엔진의 2개의 기통열간의 계곡부(valley part)를 유효하게 활용함과 동시에, 엔진 본체(실린더 블록)을 충분히 보강할 수 있도록 하기 위해, V형 엔진의 계곡부(11)를 끼고 상호 대향하는 2개의 제 1, 제 2 뱅크(B1, B2)의 측벽(W1)을 일체적으로 결합하는 천판(12)과, 계곡부(11)의 저벽(D)보다 돌출하여 천판(12)에 상단이 결합되며, 저벽(D)과 천판(12)과의 사이에 기통열 방향(X)에 따라서 연장되는 복수의 공간인 냉각수 통로(R1) 및 브리져실(breather room)(R2)을 형성하는 벽체(22)를 설치한다.
Patent KR-20000025236-A (KR)
Title: Apparatus for transmitting charging data in file form in cdma system and method therefor
Inventor: KIM CHI JUNG
IPC: H04L12/14
Filed: 1998-10-09
Abstract: PURPOSE: An apparatus for transmitting charging data is provided to prevent a loss of charging data and to manage the charging data with ease by storing the charging data in a disk and transmitting the charging data in a file form to a charging center. CONSTITUTION: A charging data send block(CDSB)(120) of a charging block mounted in an exchanger(100) transmits a charging data of a file form stored in an operation and maintenance processor(OMP) disc(130) to a charging file save(CFS)(210) mounted in an active billing mediation device(BMD)(200). An OMP disc(130) mounted in an exchanger(100) stores the charging data outputted from a charging data recording(CDR)(110) in a file form. A charging file transfer(CFT)(220) mounted in the a main BMD(200) reads the charging data of a file form stored in a disc(270) and transmits the charging data to a charging center(400) through a FTAM protocol. A CMH(230) mounted in the main BMD(200) transmits and receives a message with the charging center(300) through a TCP/IP protocol.
Patent KR-20000026024-A (KR)
Title: Carrier to hold volatile liquid and control method of volatility of volatile liquid using carrier
Inventor: PAEK IN SUP
IPC: A61L9/04
Filed: 1998-10-16
Abstract: PURPOSE: A carrier of volatile liquid is provided, which is excellent for holding liquid, can control volatility of liquid, and is used for a long time. CONSTITUTION: A carrier used for holder of aromatic materials comprises an inner carrier(1) made of pulp to keep liquid ingredient with volatility, slurry on the outside of the inner carrier(1) produced by mixing 10-50 wt% of porous carrier and 10-40 wt% of bond, and dissolving and dispersing in water, and a porous carrier(2) made by coating the slurry on the surface by common printing method or coating method and drying. To control the volatility of volatile liquid, the carrier composed of the inner carrier(1), slurry, the porous carrier(2) is immersed in liquid volatile and the carrier including volatile liquid is wrapped with semi-permeable wrapping paper.
Patent KR-19990037185-A (KR)
Title: 파일럿식 절환밸브
IPC: F16K31/124
Filed: 1998-10-19
Abstract: 밸브보디에 형성된 유로절환면에, 공급포트로부터 분기된 내부 파일럿유로와, 외부 파일럿포트에 통하는 외부 파일럿유로와, 파일럿유체를 파일럿밸브에 인도하기 위한 파일럿 입력유로를 나란히 개구시켜, 그 유로절환면에, 인접하는 2개 유로의 개구에 걸치는 크기의 오목한 곳을 가진 유로절환판을, 180도 방향변경 가능하도록 부착한다.
Patent KR-20000026249-A (KR)
Title: Convergence purity magnet assembly and cathode ray tube using thereof
Inventor: LEE BONG WOO
IPC: H01J29/78
Filed: 1998-10-19
Abstract: PURPOSE: A convergence purity magnet assembly and a cathode ray tube using thereof are provided to converge a minimum amount of adjustment converge to 0 by spreading the range of purity adjustment of an electron beam and the range of adjustment of a static convergence. CONSTITUTION: A convergence purity magnet assembly(20) comprises a magnet placement part(21a,22a) where magnets are placed with a fixed interval and at least a pair of rings(21,22) installed in a neck part of a cathode ray tube. The direction of magnetization of the magnet placement part is sloped at a fixed angle toward the center of the ring. A cathode ray tube comprises a panel having a fluorescent film, a funnel having the neck part, and a convergence purity magnet which has at least a pair of rings and whose magnetization direction is sloped toward the center of the ring.
Patent KR-19990044987-A (KR)
Title: 전구
IPC: H01J5/48
Filed: 1998-11-04
Abstract: 본 발명은 핀치 실링부가 유지 플레이트에 의해서 유지되는 전구에 있어서, 전구 캡슐의 파손 및 백래쉬를 방지하는 것을 과제로 한다. 
     유지 플레이트(13)에 핀치 실링부(3)를 양측으로부터 협지(挾持)하는 복수의 누름 부재(17, 17…, 18, 18,…)를 형성하고, 핀치 실링부의 유리구(2)의 측의 단부(6)에는 핀치 실링부의 폭 방향의 중앙부를 제외한 부분에 두께가 두꺼운 부분(7, 7,…)을 형성하고, 이 두께가 두꺼운 부분과 누름 부재가 접촉하도록 하였다.
Patent KR-20000032248-A (KR)
Title: Image data division method and decoding method of encoded data therewith
Inventor: YOO GUK YEOL
IPC: H04N19/89
Filed: 1998-11-13
Abstract: PURPOSE: An image data division method and decoding method of an encoded data using the same is to encode an image data including pictures consisting of macroblocks, thereby allowing the image data to have a high error resilience in forming a bitstream. CONSTITUTION: An image data division method comprises the steps of: extracting first data consisting of DC(Direct current) components of COD(Coded), MCBPC(Mode coded block pattern chrominance) and DCT information of macro blocks to form a first data group; extracting an MV information of the macro blocks to form an MV(Motion vector) information group; extracting a second data consisting of AC(Alternating current) components of CBPY(Coded block pattern luminance), DQUANT(Difference quantization step size) and DCT information of the macro blocks to form a second data group; and forming a bitstream of a picture unit from the first data group, the MV information group, and the second data group.
Patent KR-20000032484-A (KR)
Title: Multi band automatic antenna apparatus of mobile communication terminal
Inventor: KIM DONG HWAN
IPC: H01Q1/24
Filed: 1998-11-14
Abstract: PURPOSE: A multi band antenna apparatus of a mobile communication terminal is provided which does not comprise a number of antennas and has no additional matching circuit satisfying each band. CONSTITUTION: A multi band antenna apparatus controls the extension length of a road antenna automatically according to the band in a mobile communication terminal. The multi band antenna apparatus comprises: a motor transferring a rotation force to a saw tooth gear; a whip antenna(112) which transmits a frequency signal corresponding to the extended length of the antenna and performs the height smuggling according to the rotation of the saw tooth gear; a micro strip antenna(122) receiving at least more than one kinds of frequency signals; a flip sensing part(150) sensing the opening/closing of a flip; and a control part(100) controlling the operation of the motor.
Patent KR-20000032587-A (KR)
Title: Method of heat-rolling a directional electrical sheet plate which has a lower edge crack of heat plate lead and a good magnetic property
Inventor: KIM JAE KWAN
IPC: C21D8/12
Filed: 1998-11-16
Abstract: PURPOSE: A method of heat-rolling a directional electrical sheet plate is provided to give economical benefits from a reduced occurrence of an edge crack of heat plate lead with an improved magnetic property. CONSTITUTION: The method is comprised of reheating silicon steel slab containing Selement in a heat furnace, extracting the reheated slab, crude rolling the slab with spraying high pressure water, and then rolling the resultant. Among these steps, the crude rolling is characterized by directly spraying high pressure water on upper and lower surfaces except for edge parts of the slab. In addition, the slab is characterized by comprising 2.0 to 4.0% of Si, 0.03 to 0.10% of C, 0.01 to 0.05% of Sol to Al, 0.03 to 0.10% of Mn, 0.005 to 0.015% of N, 0.007 to 0.030% of S, 0.01 to 0.15% of Cu, the remaining being Fe and inevitable impurities.
Patent KR-19990045425-A (KR)
Title: 강유전체 커패시터의 라이프 테스트용으로 이용가능한 단명 셀검출기를 갖는 강유전체 랜덤 액세스메모리 디바이스 및 강유전체 메모리 셀의 테스트 방법
IPC: G11C14/00
Filed: 1998-11-19
Abstract: 강유전체 랜덤 액세스 메모리 디바이스는 한 쌍의 강유전체 커패시터 (CP1/CP2) 에 히스테리시스 루프를 따라서 가변되는 잔류 분극형으로 데이터 비트를 저장하고,  센스 증폭기 (OSA0 내지 OSAm;  SA10 내지 SA1m) 는 잔류 분극으로 인해 한 쌍의 비트 라인 (BLT0/BLN0 내지 BLTm/BLNm) 에 생성된 전위차의 크기를 증가시키며,  센스 증폭기의 무감지 전압 범위는,  단명 강유전체 커패시터를 가려내기 위해,  상기 한 쌍의 강유전체 커패시터에 대한 라이프 테스트에서 예정되로 증가된다.
Patent KR-20000034239-A (KR)
Title: Apparatus for identifying record status of digital video cassette recorder and method thereof
Inventor: JUN BYUNG HOO
IPC: H04N5/76
Filed: 1998-11-28
Abstract: PURPOSE: An apparatus for identifying the record status of digital video cassette recorder and a method thereof are provided to identify the record status by comparing a source data with a recorded data. CONSTITUTION: An apparatus for identifying the record status of digital video cassette recorder includes a recorder(10), a player(30), a delayer(20), a comparator(50), and a displayer(60). The recorder(10) records an image signal and a voice signal. The player(30) plays the image signal and the voice signal recorded by the recorder(10). The delayer(20) delays the recorded image signal and voice signal for a tape running time between the recorder(10) and the player(30). The comparator(50) compares the delayed image signal and voice signal with the played image signal and the voice signal. The displayer(60) displays the status of recorded image signal and voice signal based on the compared result.
Patent KR-19990062654-A (KR)
Title: 극저온 정류 시스템을 이용한 저순도 산소 제조 방법
IPC: F25J3/04
Filed: 1998-11-30
Abstract: 본 발명은 증류 칼럼 내에 비단열성 증류 장치를 적용하여 칼럼의 상부 단편에 고순도 액체 질소 환류를 제공함으로써 높은 회복율을 갖는 저순도 산소를 직접 제조하는 방법이다.  본 발명은 비단열 증류 장치와 증류 칼럼에 다양한 공급 공기를 선택적으로 적용할 수 있도록 한 것이다.
Patent KR-20000037721-A (KR)
Title: Lead structure of automatic washing machine
Inventor: PARK YONG SEOK
IPC: D06F39/00
Filed: 1998-12-02
Abstract: PURPOSE: A lead structure of an automatic washing machine is provided to reinforce the strength of a transparent portion which is formed in a lead and enable a user to see the interior of the washing machine clearly by using the transparent portion which is protruded from the lead. CONSTITUTION: A transparent portion(112) is protruded from a lead(111) to reinforce the strength of the transparent portion(112) which is formed on a lead and enables a user to see the interior of a washing(101) clearly by improving the transparency of the transparent portion(112). The central portion(t2) of the transparent portion(112) is thinner than the peripheral portion(t1) of the transparent portion(112).
Patent KR-20000038384-A (KR)
Title: Method for photographing photo sticker of monitor
Inventor: KIM SEONG RYEOL
IPC: G03B17/50
Filed: 1998-12-07
Abstract: PURPOSE: A method for photographing a photo sticker of a monitor is provided to improve a function of a monitor. CONSTITUTION: A method for photographing a photo sticker of a monitor includes eleven steps. A power supply is turned on in a first step. The second step is to display a program menu which a monitor has. The third step is to judge whether a photo sticker mode among the displayed program menu is selected or not. The fourth step is to collect an image information inputted through a camera(13) if the photo sticker mode is selected. The fifth is to process the image information to a digital signal and perform an error detection and an error correction. The sixth step is to transform a received image data in the fifth step to an analog signal. The seventh step is to display the image signal converted to the analog signal to a monitor. The eighth step is to store the image data of the fourth step. The ninth step is to judge whether a printer mode is selected or not. The tenth step is to transfer an image data to a printer(18) and perform the printer mode if the printer mode is selected. The eleventh step is to perform a selected mode if the photo sticker mode is not selected and finish when the performance of the selected mode is completed.
Patent KR-20000039012-A (KR)
Title: Method for making use of intelligent peripheral on advanced intelligent network as internet server
Inventor: LEE IL WOO
IPC: H04L12/28
Filed: 1998-12-10
Abstract: PURPOSE: A method for making the use of an intelligent peripheral(IP) on an advanced intelligent network(AIN) as an internet server is provided to offer an internet service as well as a typical service of intelligent network, by setting the function of the internet server at the IP so that the IP as the internet server can be accessed by an internet host connected to an internet. CONSTITUTION: An IP address is allocated to each component of intelligent peripherals(201). At this time, the IP addresses are allocated to a specialized resource main processor, a service switch point of the specialized resource and a specialized resource unit, in response to instructions via a console referring to an IP address allocation table. A routing protocol in a local area network(LAN) is activated in order to enable the intelligent peripherals to be operated as the components of the internet(202). A default rout of the main processor for the specialized resource is set in order to enable a transmission to the internet server and a reception from the internet server(203).
Patent KR-19990071449-A (KR)
Title: 멀티챔버 기판처리장치
IPC: H01L21/68
Filed: 1998-12-24
Abstract: 처리챔버내의 설정위치에 항상 정확하게 기판이 배치되는 멀티챔버 기판처리장치로서, 점유스페이스가 커지지 않고, 생산성이 우수한 실용적인 장치를 제공한다. 
     스퍼터링챔버(8) 및 CVD 챔버(9)로의 성막처리전에 기판(Sb)을 가열하는 히트챔버(6)에는, 기판(Sb)의 중심위치를 산출하여 이 중심을 설정위치에 일치시키는 중심위치정렬과 기판(Sb)의 원주방향위치를 산출하여 이 원주방향위치가 설정위치가 되도록 하는 원주방향위치정렬을 하는 위치정렬수단을 구비한다.  위치정렬은, 히터(621)를 내장한 기판홀더(62)로부터 승강기구(65)에 의해서 기판(Sb)을 검출라인의 높이에 상승시켜, 이 위치에서 기판(Sb)을 회전기구(64)에 의해서 회전시키면서, 기판(Sb)의 원주가장자리의 각 점이 발광기(671)로부터의 빛을 차단하는 양을 수광기(672)로 검출함으로써 행해진다.
Patent KR-20000042271-A (KR)
Title: Cam shaft cover coupling structure of automobile
Inventor: NOH JUN HEON
IPC: F02F11/00
Filed: 1998-12-24
Abstract: PURPOSE: A cam shaft cover coupling structure is provided to achieve an enhanced sealing performance of a coupling hole while pressedly fixing via a bolt a ring-shaped second sealing member, a washer, and a first sealing member onto a bent surface formed at a top end of the coupling hole of the cam shaft cover. CONSTITUTION: A cam shaft cover coupling structure comprises a bent surface(42) formed as being bent multiple times at a top end of a coupling hole(40a) of a cam shaft cover(40) and which has at a lower end thereof a safe loading surface(44), a first sealing member(50) an external surface of which is bent to have a shape corresponding to the bent surface(42) and which has at an interior thereof a stepped portion(52), a washer member(60) having a stepped portion(62) in correspondence with the stepped portion(52) of the first sealing member(50), a second sealing member(70) loaded into the stepped portion(62) of the washer member(60), and a bolt(80) inserted into the coupling hole(40a) of the cover(40) such that the second sealing member(70), washer member(60), and the first sealing member(50) are sequentially and pressedly fixed onto the bent surface(42) at the top end of the coupling hole(40a).