baber/WOPTO huggingface dataset:
Patent KR-20030034750-A (KR)
Title: Method for collecting charging data in mobile switching system
Inventor: LEE CHANG YONG
IPC: H04L12/28
Filed: 2001-10-26
Abstract: PURPOSE: A method for collecting accounting data in a mobile communication exchange is provided to transmit accounting data generated from the exchange to an account repeater apparatus and collect the data by using a client/server type through a socket communication. CONSTITUTION: A socket connection is set between an exchange and an account repeater apparatus(502). After setting the socket connection, accounting file transmission and reception threads are produced to the exchange and the account repeater apparatus, respectively, in order to collect accounting data from the exchange. By the accounting file transmission and reception threads, the account repeater apparatus collects accounting data from the exchange(503,507). Whenever there is an accounting file transmission request, a transmission collection is performed from the exchange to the account repeater apparatus through the socket connection.
Patent KR-20030035052-A (KR)
Title: SCreen Clarity Suit
Inventor: SEO MIN HO
IPC: A41D1/00
Filed: 2001-10-26
Abstract: PURPOSE: Provided are screen transparent clothes which allow a small-sized video camera to take photo of rear background and display it at front side continuously so that they show effect to hide people who wears the clothes, from front view. CONSTITUTION: The screen transparent clothes are characterized by comprising the parts of: the small-sized video camera(1) which is fixed at front sheet(2) of the screen transparent clothes to take photo of front background and display it at a rear plate of the transparent clothes; and a rear video camera(3) which takes photo of rear background and display it at front, left and right plate(2,5,6) of the transparent clothes.
Patent KR-20030037928-A (KR)
Title: Method for making a korean herb tea with effect for improving amnesia
Inventor: PARK HO JIN
IPC: A23F3/00
Filed: 2001-11-07
Abstract: PURPOSE: Provided is a preparation method of the tea consisting of the herbal galenical materials to have an efficacy for improving the forgetfulness and clear the brain. CONSTITUTION: The preparation method of the tea comprises a step of mixing eleven kinds of galenical materials consisting of Poria Cocos WOLF, Polygala tenuifolia WILLD, licorice root, a sweet flag, ginseng, Cimicifuga heracleifolia KOM., the root of an arrowroot, hedysarum, Vitex rotundifolia L. fil, Pheonia lactiflora PALL and Phellodendron amurense RUPR. according to Korean Meditation Guide Book, washing and slicing it; a step of steaming the mixed galenical materials under the pressure of 0.5 kg/cm¬2 at the temperature of 120 deg.C for 30 minutes to 2 hours; a step of drying the steamed galenical materials to a moisture content of 20 to 40%; a step of parching the dried galenical materials at the temperature of 80 to 90 deg.C for 5 to 20 minutes; and a step of grinding the parched galenical materials to the mean particle size of 0.1 to 1 mm and drying it to a moisture content of less than 10%.
Patent KR-20030040768-A (KR)
Title: Information management method in internet
Inventor: MO YOUNG IL
IPC: G06F17/00
Filed: 2001-11-16
Abstract: PURPOSE: A method for managing information on the Internet is provided to perform the PR(Public Relations) of an operator's site by servicing all integrated and arranged information collected from a web site servicing the same kind information at one site and automatically registering the collected information to all sites of the same kind. CONSTITUTION: The information is automatically and periodically searched from the same kind web sites having the desired information by a schedule information collection program(204). The information is collected and recorded to a web server system. An e-mail address of an original information registerer is stored in a database and a guide mail for asking the registerer to post up the collected information is automatically sent(210). The collected information is posted up or deleted according to the approval of the information registration(214). The web server system services the collected information(216). The information posted to the web server system is uploaded to all same kind web sites according to an automatic information registration request of the registerer(220). The mail asking the validity of the posted information is periodically sent to the web sites(222).
Patent KR-20030050744-A (KR)
Title: Circuit for setting/resetting test mode in double data rate synchronous semiconductor memory device
Inventor: KIM CHEOL SU
IPC: G11C29/00
Filed: 2001-12-19
Abstract: PURPOSE: A test mode setting/resetting circuit of a dual data rate synchronous DRAM is provided to perform normally a synchronous operation of a DLL(Delay Locked Loop) circuit by preventing an entry into an unnecessary test mode at a power-up process. CONSTITUTION: A test mode setting/resetting circuit(200) includes a setting portion(230,250,270) and a resetting portion(210). The setting portion activates a test mode address signal to select a test operation mode in response to a test mode control signal. The resetting portion resets the test mode address signal in response to an extended mode register set control signal or a mode register set control signal. The extended mode register set control signal is generated from an extended mode register set command to activate an operation of a DLL circuit. The mode register set control signal is generated from a mode register set command to perform a normal operation.
Patent KR-20030050837-A (KR)
Title: Polyamideimide polymer for enamel copper wire covering and enamel copper wire manufacturing method
Inventor: LEE JUN HUI
IPC: H01B3/38
Filed: 2001-12-19
Abstract: PURPOSE: Provided are a polyamide-imide polymer which shows a sufficient heat resistance and a suitable viscosity(which is not extremely high), and thus excellent processability and productivity when coated. CONSTITUTION: The polyamide-imide polymer has a structure of formula 9(wherein each of m and n is a mole fraction of each monomer, 0.7<=m<=0.9, and 0.1<=n<=0.3). The polymer has the molecular weight of 30,000 to 50,000. The polymer is prepared by reacting a trimellitic anhydride and pyromellitic anhydride with 4,4'-methylenediphenyldiisocyanate in highly polar solvents. The enamel copper wire is produced by applying the polymer on an enamel copper wire, and curing the wire at high temperature to form a final enamel copper wire.
Patent KR-20030053725-A (KR)
Title: Two-point clamped bracket to prevent the fracture of exhaust-manifold
Inventor: CHO IN SEONG
IPC: F01N13/10
Filed: 2001-12-22
Abstract: PURPOSE: A two-point clamped bracket is provided to reduce vibration of manifolds and prevent fracture of manifolds by increasing the number of support points. CONSTITUTION: A bracket(9) has a fixing board(10) arranged at the left side of the bracket, wherein the fixing board has a bolt coupling hole(13) for fixing the bracket to the lower portion of the vehicle body. A two-point clamped bracket(9a) has the fixing board arranged at the left side of the bracket and an additional fixing board(11) arranged at the right side of the bracket. By applying the two-point clamped bracket having two fixing boards, vibration is generated in a symmetrical manner at the closed couple catalyst converter, to thereby allow four manifolds to be deformed in a uniform manner.
Patent KR-20030055873-A (KR)
Inventor: BAEK MYEONG GI
IPC: A61K38/00
Filed: 2001-12-27
Abstract: PURPOSE: A new composition of microemulsion preconcentrate which can apply to a hydrophilic or protein drug as well as a water-insoluble drug is provided. The composition is non reactive with a gelatin film during the formulation into a soft gelatin capsule and ensures the safety of a formulation. CONSTITUTION: A microemulsion preconcentrate composition contains 0.5 to 60 parts by weight of an active material, 0.5 to 60 parts by weight of a hydrophilic solvent and 0.5 to 80 parts by weight of a surfactant. In the composition, the total weight of the oil, hydrophilic solvent and surfactant is 0.5 to 10 times of the weight of the active material such as cyclosporin. The hydrophilic solvent is propylene glycol diacetate, propylene glycol monoacetate or a salt thereof.
Patent KR-20030057781-A (KR)
Title: Nonmetallic surface coating composition
Inventor: KANG BYEONG DO
IPC: C09D183/12
Filed: 2001-12-29
Abstract: PURPOSE: Provided is a coating composition for nonmetallic surface which can be cure at a low temperature, applied to the extended range of material, and decrease the damage of glass material resulting from heat shock after heat-curing. CONSTITUTION: The composition comprises 10-30 wt% of modified siloxane copolymer obtained by hydrolyzing and condensing at least two compounds selected from metal alkoxy silane compounds represented by formula 1 and metal alkoxy titanate compounds represented by formula 2; 25-35 wt% of available fluorine resin having hydroxyl group or acrylic resin having hydroxyl group; 30-50 wt% of solvent; and 10-20 wt% of curing agent. Formula 1: (R1)aSi(OR2)4-1(wherein R1 is C1-C6 alkyl group, epoxy group-substituted alkyl group or amine functional group-substituted alkyl group, or mercapto group-substituted alkyl group, R2 is an alkyl group of C1-C3, and a is an integer of 0-2). Formula 2: (R3)bTi(OR4)4-b(wherein R3 is C1-C6 alkyl group, epoxy group-substituted alkyl group or amine functional group-substituted alkyl group, or mercapto group-substituted alkyl group, R4 is an alkyl group of C1-C10, and b is an integer of 0-2).
Patent KR-20030058170-A (KR)
Title: Preamble detector for code division multiple access system
Inventor: YANG YUN O
IPC: H04B1/16
Filed: 2001-12-29
Abstract: PURPOSE: A preamble receiver for a CDMA(Code Division Multiple Access) system is provided to use the entire memory of a hardware by adjusting the number of signatures capable of reception, according to a cell radius. CONSTITUTION: Double buffers(20,30) store 16 one-time and half-time data per a chipx1 clock. Multiplexers(51-58) alternately select the one-time and half-time data stored in the double buffers(20,30) per chipx8 clocks. Code double buffers(70,80) store 15 preamble codes per the chipx1 clock. A 16-bit shift register(90) and an 128-bit shift register(100) shift data stored in the code double buffers(70,80) by one bit per chipx4 clocks. Multipliers(111-118) multiply data outputted from the multiplexers(51-58) by data outputted from the 16-bit shift register(90) according to each bit. Adders(121-128,131-134,141,142,150) add bits of data outputted from multipliers(111-118). An 16-bit adder(160) adds data outputted from the adders(121-128,131-134,141,142,150) and data stored in a memory(170) per the chipx8 clocks, and record the added data in the memory(170).
Patent KR-20010071780-A (KR)
IPC: A61P25/04
Filed: 1999-07-08
Abstract: The instant invention is a method of using certain analogs of glutamic acid and gamma-aminobutyric acid to relieve the pain associated with renal colic.
Patent KR-20010035545-A (KR)
Title: 웨이퍼 리테이너와 연마기 기판으로부터 웨이퍼리테이너를 부착/탈착시키기 위한 방법
IPC: H01L21/68
Filed: 1999-08-27
Abstract: 본 발명에 따른 웨이퍼 리테이너는 웨이퍼의 표면으로부터 탈착시킬 수 있도록 웨이퍼에 흡착되어 있는 폼층 ; 폼층 밑면에 형성된 제 1차 감압점착층; 제 1차 감압점착층 밑면에 형성된 지지체; 연마기의 기판에 부착시키기 위해 지지체의 밑면에 형성된 제 2차 감압점착층; 및 제 2차 감압점착층에 부착되어 분리가능한 릴리즈 시트를 포함하고 있고, 이 때 상기 제 2차 감압점착층은 감압접착제와 접착제 조성물의 약 1 중량 퍼센트 내지 약 30 중량 퍼센트의 양을 함유하는 사이드-체인 결정가능한 폴리머를 지닌 접착제 조성물을 함유하고 있다.   또한, 상기 사이드-체인 결정가능한 폴리머는 그 주성분으로 사이드-체인에 16 또는 그 이상의 탄소원자를 함유하는 직쇄 알킬 그룹을 지닌 아크릴산 에스테르 및/또는 메타크릴산 에스테르를 함유한다.
Patent KR-20010099694-A (KR)
IPC: H01L23/495
Filed: 1999-09-14
Abstract: 2개의 반도체 칩이 등을 맞대고 본딩되어 있고, 지지 리드가 반도체 집 중 어느 하나의 앞면에 본딩되어 있다.  이러한 구성은 반도체 장치를 얇게 할 수 있다.  반도체 장치의 수율은 2개의 반도체 칩들을 스태킹함으로서 향상될 수 있어서, 한 칩의 전극들은 다른 것으로부터 편향되어 있다.
Patent KR-20010108059-A (KR)
Title: 옥세타논 유도체
Filed: 2000-10-27
Abstract: 본 발명은 신규 옥세타논 유도체 화합물 및 리파제 억제제로서 유용한 유도체를 제조하는 방법에 관한 것이다.  또한 본 발명은 염을 제조하는 방법 및 1종 이상의 옥세타논 유도체 또는 염을 포함하는 제약 조성물을 제조하는 방법 뿐 아니라 리파제를 억제하는 이러한 화합물 및 조성물을 사용하는 방법에 관한 것이다.
Patent KR-20010093268-A (KR)
IPC: A61P15/00
Filed: 2000-01-25
Abstract: 특히 에스트로겐-의존성 암과 같은 에스트로겐-의존성 질환의 치료에서, 제약학적 약제로서 유용한 붕소 헤테로고리 스테로이드 모의체가 제공된다.  화합물은 또한 자기 공명 영상(MRI) 및 자기 공명 분광법 (MRS)와 같은 진단 기술, 붕소 중성자 포획 요법, 및 형광 방출-기초 양식에서도 유용하다.  신규 화합물을 사용하는 제약학적 제형 및 방법도 또한 제공된다.
Patent KR-20010108491-A (KR)
IPC: B29C45/50
Filed: 2000-04-10
Abstract: 전기 모터 동력 스크류 구동 시스템(10)은 예정된 공간 내에서 증가된 출력 토크를 제공한다.  한 쌍의 전기 모터들(30,32)은 그들의 각각의 출력 축들(34,36)과 대향하고, 동축의 관계에서 끝단과 끝단이 연결되는 관계로 배열된다.  연결부재(38)는 각각의 모터 출력 축들(34,36) 사이에서 확장되어서 같은 회전 방향 및 같은 회전 속도로 회전하도록 함께 기계적으로 연결되도록 한다.  한 모터의 제어 회로는 다른 모터의 방향으로부터 반대의 방향으로 하나의 모터의 출력 축이 회전하도록 하는 인버터(52)를 포함하여, 연결 부재(38)에서의 조합된 모터들(30,32)의 출력에서의 토크가 각각의 독립의 모터들의 토크들의 합이 되도록 한다.
Patent KR-20010113823-A (KR)
Title: Method for continuously casting ferritic stainless steel strips free of microcracks
IPC: B22D11/00
Filed: 2000-03-29
Abstract: The invention concerns a method for continuously casting a ferritic stainless steep strip with thickness not more than 10 mm directly from liquid metal between two cooled rolls with horizontal axes and driven in rotation, characterized in that: the liquid metal composition in weight percentages is as follows: % C+% N<=0.12; % Mn<=1; % P<=0.4; % Si<=1; % Mo<=2.5; % Cr between 11 and 19; A1<=1%; % Ti+%Nb+% Zr<=1; the rest being iron and the impurities resulting from preparation; the Upsilp index of the liquid metal ranges between 35% and 60%, Upsilp being defined by the formula: gammap=420% C+470% N+23% Ni+9% Cu+7% Mn 11.5% Cr 11.5% Si 12% Mo 23% V 47% Nb 49% Ti 52% A1+189: the surface roughness of said rolls being more than 5 mum; in the proximity of the meniscus metal liquid present between the rolls an inerting gas is used consisting of at least 60% by volume of a gas soluble in steel.
Patent KR-20020019040-A (KR)
Inventor: HAANEMAAIJER JAN HENDRIK
IPC: B01D5/00
Filed: 2000-05-26
Abstract: The following process steps are carried out in order to purify a liquid by membrane distillation, in particular to produce desalinated water from seawater or brackish water or process water:passing a relatively warn vaporising stream of liquid (retentate stream) over a porous membrane, vapour flowing via the pores of the membrane to the other side of said membrane, andcondensing said vapour on a relatively cool condenser surface to give a distillate stream, said condenser surface forming the non-porous separation between a feed stream to be purified and said distillate steam, which feed stream is in counter-current with the retentate stream so that an appreciable proportion of the latent heat will be transferred via vapour to the feed stream, and a gas gap with a width of less than 5 mm being present between the porous membrane and the condenser surface.In order to improve the distillate flow rate per unit driving force, a pressure which is lower than the atmospheric pressure and higher than the vapor pressure of the feed stream is maintained in the gas gap, the porosity epsilon of the porous membrane is higher than 0.7, porosity being understood to be the ratio of the open volume to the total volume of the porous membrane, the surface area of the condenser surface is 1.2 to 6 times, preferably 2 to 3 times, the surface area of the porous membrane, the effective local vapour pressure difference between the retentate seam and the condensing stream is less than 10 kPa (0.1 bar), preferably less than 5 kPa (0.05 bar) and the perceptible heat of the distillate stream is released by heat exchange to the feed stream and/or the retentate stream, with preference for the retentate stream.
Patent KR-20020006050-A (KR)
IPC: A23L3/358
Filed: 2000-05-24
Abstract: 대상을 멸균하는 방법 뿐만 아니라 이 방법으로부터 얻어진 멸균된 대상이 개시된다. 방법은 재사용되는 의료 장치와 같은 대상을 입체구조적으로 변경된 단백질(예를 들어, 프리온)을 비-감염성으로 만드는 조건 하에 폴리양이온성 수지상체와 접촉시키는 것을 포함한다. 또한, 수지상체를 포함하는 소독제 또는 외과용 스크럽 조성물이 폴리양이온성 수지상체로 처리된 젤라틴 캡슐로서 개시된다.
Patent KR-20020014809-A (KR)
Title: Fluid mixing apparatus
IPC: G05D11/035
Filed: 2000-06-01
Abstract: A reduced pressure shut off assembly for an eductor mixing system wherein a vacuum shut off valve is activated by reduced pressure in a reduced pressure line connected to a container for a concentrate. In a preferred embodiment, an eductor and the vacuum shut off valve are positioned on top a vessel for storing a solution of the concentrate. The mixing system with the vacuum shut off valve is especially adapted to being used for mixing a chemical concentrate cleaning composition with water.
Patent KR-20020009634-A (KR)
IPC: B01J2/04
Filed: 2000-06-06
Abstract: 본 발명은 일체식 분무 건조 장치를 구비하는 유동층 장치와 그 사용 방법에 관한 것이다.  또한, 본 발명은 생성물 특성이 상기 재료의 다른 용도에 따라 의도하는 방법으로 변화될 수 있는 분무 건조된 분말 재료의 제조 방법에 관한 것이다.
Patent KR-20020026199-A (KR)
IPC: G11B7/2533
Filed: 2001-04-26
Abstract: 본 발명은 점도 평균 분자량이 10,000 내지 17,000이고, 철분 함유량, 총 유리 페놀량, 이형제 함유량, 수산기 말단 분율, 1 H-NMR 스펙트럼 등에 특징을 갖는 폴리카보네이트 수지에 관한 것이다.  상기 수지는 이형제의 첨가량을 필요 이상으로 늘리지 않고도, 플래시에 의한 결함이 적은 광학 디스크 기판의 소재로서 적합하다.
Patent KR-20020019933-A (KR)
IPC: G02F1/1333
Filed: 2000-06-29
Abstract: 폴리실리콘 TFT 기판에 적합한 액정 패널 유리에 있어서, 폴리실리콘 TFT 기판에 대한 지속적인 용해도, 경량 및 강도를 얻기 위해 스트레인점, 비중 및 영율이 측정된다.  구체적으로, 스트레인점은 680℃ 이상이고, 비중은 2.45 이하이고, 영율은 7600GPa 이상이다.  이러한 유리는 SiO 2 , B 2 O 3 , Al 2 O 3 및 MgO를 조합하여 포함할 수 있다.
Patent KR-20030059572-A (KR)
Inventor: LEE DONG WON
IPC: G06V40/40
Filed: 2002-01-02
Abstract: PURPOSE: A method and a device for discriminating an imitation fingerprint are provided to discriminate the imitation fingerprint by using the property difference in the reflection, the permeability, and the attenuation of light between a biometric fingerprint and the imitation fingerprint. CONSTITUTION: The lightening controller(53) controls an infrared LED(Light Emitting Diode)(54) emitting the light to an object(52) contacting to a fingerprint input window(50) while the light is penetrated as following an internal surface adjacent to the surface of the object(52). An object surface image obtaining part(56) obtains a surface image of the object(52) by detecting the light outputted from the object(52) after penetrating the inside of the object(52) through an image sensor(55). An imitation fingerprint discriminating part(58) discriminates between the biometric fingerprint and the imitation fingerprint based on an image analysis result from an image analyzer(57) analyzing the image obtained from the object surface image obtaining part(56).
Patent KR-20030017299-A (KR)
Title: Deflection yoke apparatus
Inventor: NAKAMURA KAZUTOSHI
IPC: H01J29/76
Filed: 2002-01-10
Abstract: PURPOSE: To provide a deflection yoke device which can correct deflection distortion, especially, screen distortion of lateral lines seen in a deflection yoke device constituted of a combination or the like of a square horizontal deflection coil and a vertical deflection coil directly wound around a round ferrite core. CONSTITUTION: In a deflection yoke device having a horizontal deflection coil 22 and a vertical deflection coil 24 arranged on a coil mounting frame 21 having a shape enlarging from a small diameter-portion to a large diameter-portion, there are provided a pair of magnets 27a, 27b which are arranged on the upper and lower ends of the large diameter portion of the coil mounting frame 21, having magnetic poles in the X direction, and right and left six magnets (28a, 28b, 29a to 29d) which are arranged equally at the right and left ends of the large diameter portion of the coil mounting frame 21, having magnetic poles in the Y direction for correcting lateral line distortion in the vicinity of the right and left ends in the upper and lower portions of a CRT screen. Six magnets on the right and left sides having magnetic poles in the Y direction consist of two magnets (28a, 28b) arranged on an X-axis to curve an electron beam toward the inside of the screen in the horizontal direction, and four magnets (29a to 29d) arranged on middle portions in a vertical direction to exert magnetic force to curve the electron beam toward the outside of the screen in the horizontal direction.
Patent KR-20030061491-A (KR)
Title: Fingerprint Authentication Method on Computer Network
Inventor: KANG JIN HO
IPC: G06K9/00
Filed: 2002-01-14
Abstract: PURPOSE: A method for certifying a fingerprint on the computer network is provided to minimize the load of a certification server and to shorten the time needed for the fingerprint certification largely by executing a process for comparing the fingerprint data on a client instead of the server. CONSTITUTION: An application program requests the transmission of a standard fingerprint to the server by transmitting a user ID inputted from a client system when an event needing the certification is occurred(S217). The server extracts the standard data matched with the ID by searching a database, and transmits it to the client system(S218). The client system receives the fingerprint data of the user through a fingerprint recognition tool, and compares the received fingerprint data with the standard fingerprint data transmitted from the server by using a fingerprint data comparison algorithm(S219). The application program executes the event needing the certification only if a comparison result is agreed(S221).
Patent KR-20020063127-A (KR)
Inventor: ROSATI ROBERT LOUIS
IPC: A61K31/58
Filed: 2002-01-25
Abstract: PURPOSE: Provided are methods, kits and instructions for treating cancer of the liver, ovarian cancer, a desmoid tumor, glioma, pancreatic cancer, or renal cell caranoma that comprise administering to a patient having cancer of the liver, ovarian cancer, a desmoid tumor, glioma, pancreatic cancer, or renal cell carcinoma using a therapeutically effective amount of an estrogen agonist/antagonist. CONSTITUTION: A pharmaceutical composition for treating cancer of the liver, ovarian cancer, a desmoid tumor, glioma, pancreatic cancer or renal cell carcinoma contains the estrogen agonist/antagonist represented by the formula(I), or a pharmaceutically acceptable salt, N-oxide, ester, quaternary ammonium salt or prodrug thereof in an therapeutically effective amount.
Patent KR-20030064198-A (KR)
Title: Discharge device for badness paper cup
Inventor: KIM SANG GYUN
IPC: B31B11/00
Filed: 2002-01-24
Abstract: PURPOSE: When a forming device is stopped and actuated, an attached paper cup is discharged automatically through a discharge pipe and discharge hole. CONSTITUTION: In an air transferring pipe, a discharge hole(14a) is formed in one side of a transferring pipe(10). A discharging pipe(12) is connected to the discharging hole. A shutting plate(14) is provided to open/close the discharge hole. A cylinder is provided to drive the shutting plate. A connecting member(16) is installed to connect the cylinder and the shutting plate. When there is any inferior goods, the shutting plate opens the discharge hole.
Patent KR-20030065780-A (KR)
Title: Check valve of air cleaner to prevent back fire
Inventor: LIM TAEK
IPC: F02M35/02
Filed: 2002-02-01
Abstract: PURPOSE: An air cleaner check valve is provided to prevent the clamp from being loosened or the air cleaner case from exploding by the back fire of engine. CONSTITUTION: An air cleaner check valve(30) comprises a through hole(24) formed at an upper case(21) of an air cleaner; a valve body(31) having a flange(32) contacting the outer surface of in such a manner that the flange covers the outer surface of the through hole, wherein the valve body has a plurality of coupling holes(33); a coupling bolt(34) coupled in such a manner that the valve body is prevented from escaping from the upper case, wherein the coupling bolt has a lower end with a spring seat(34a) for supporting an end of a spring(35); the spring interposed between the inner surface of the upper case and the spring seat of the coupling bolt; and a rubber ring(40) mounted on the outer surface of the through hole so as to allow for sealing between the valve body and the through hole.