baber/WOPTO huggingface dataset:
Patent KR-20020086968-A (KR)
Title: Equipment and method of local streaming potential measurement for monitoring the progress of membrane fouling in hollow-fiber membrane filtrations
Inventor: JUN MYEONG SEOK
IPC: G01N27/60
Filed: 2001-05-12
Abstract: PURPOSE: An equipment and a method for monitoring the progress of membrane fouling generated on the membrane pore and surface by obtaining change of zeta potential according to the lapse of filtering time in the filtration of a suspension aqueous solution are provided. CONSTITUTION: The equipment of local streaming potential measurement for monitoring the progress of membrane fouling in hollow-fiber membrane filtrations comprises a raw water container(1) for receiving raw water that is a suspension solution; a transfer pump(2) for transferring raw water; a membrane module(6) which enables inflow and discharge of the raw water and is equipped with a hollow-fiber membrane(10); inner and outer electrodes(8,9) which are respectively arranged at upper and lower parts of membrane pore at entrance and exit parts of the membrane module(6) to measure streaming potential difference; a plurality of measuring means for measuring physical properties of raw water injected into the membrane module; manometers(14) for measuring pressure difference at the entrance and exit parts of the membrane module; a flow rate control valve(11) for controlling pressure difference acted on inner and outer parts of the hollow-fiber membrane(10); a means for displaying and recording data obtained from the plurality of measuring means; and a means for calculating zeta potential of the hollow-fiber membrane(10) from the obtained data.
Patent KR-20010107721-A (KR)
Title: 컴퓨터 기반의 제품 포뮬레이션
IPC: C09D201/00
Filed: 2001-05-24
Abstract: 제품(예를 들어, 화학 제품)을 포뮬레이팅하는 컴퓨터 구현 방법은 복수의 서로 다른 구성요소들로부터 제품의 포뮬레이션을 가이드하는 제품 포뮬레이션 스크립트를 수신하는 단계를 포함한다.  이 스크립트는 예를 들어, 요구된 및 선택적 구성요소 및 관련된 다른 구성요소의 그룹을 기술한다.  이러한 가이던스를 제공하기 위해서, 이 스크립트는 (i) 포뮬레이션 구성요소의 세트를 식별하는 구성요소 선택 옵션, (ii) 포뮬레이션 구성요소들 중 하나의 구성요소의 성질과 관련된 수치 범위를 식별하기 위한 적어도 하나의 제한, 및 (iii) 타겟 제한을 포함한다.  제품 포뮬레이션 스크립트는 제품의 하나 이상의 성질들이 관련된 타겟 제한(들)과 부합하도록 제품을 제조하는데 사용될 수 있는 포뮬레이션 구성요소들의 컬렉션을 결정하도록 프로세스된다.  이 스크립트의 프로세스는 또한 선택 포뮬레이션 구성요소들 중에서 선택하는 것을 포함한다.  이 선택은 제품을 포뮬레이팅하는데 사용될 포뮬레이션 구성요소들의 세트를 결정하고 포뮬레이션 구성요소들과 관련된 허용된 범위를 결정함으로써 수행될 수 있다.  이 허용된 범위는 포뮬레이트된 제품이 타겟 제한(들)에 부합하게 한다.
Patent KR-20010109188-A (KR)
Title: 리소그래피 장치, 디바이스 제조방법 및 이것에 의해제조된 디바이스
IPC: G03F7/20
Filed: 2001-05-30
Abstract: 157nm의 노광 방사선을 사용하는 리소그래피 투영시스템에 있어서, 투영 빔이 가로지르는 영역에서의 가스의 조성, 예를 들어 산소와 수증기의 수준이 측정된다. 상기 가스들에 의해 유발된 감쇠가 예견되어 그에 따라 노광하는 동안에 축적된 방사선의 조사량, 노광하는 동안에 상기 투영 빔에 의해 기판에 전달된 방사선 에너지의 균일성 및 각도 분포가 제어된다. 상기 제어에는 투영 빔이 제어된 감쇠를 일으키도록 투영 빔이 가로지르는 체척에 O 2 의 공급의 제어가 포함된다. 예를 들어, 공간적으로 분리된 회절차수를 선택적으로 필터링하거나 투영 빔에서 불균일성을 제거하기 위해서, 상기 O 2 분포는 불균일 할 수도 있다.
Patent KR-20020094798-A (KR)
Title: A method for monitoring television broadcast in playing digital video disc
Inventor: LEE SEONG HO
IPC: H04N5/44
Filed: 2001-06-13
Abstract: PURPOSE: A method for monitoring TV broadcasting while generating a DVD is provided to simply and temporarily confirm TV broadcasting with one key operation watching the DVD. CONSTITUTION: A method for monitoring TV broadcasting while generating a DVD includes the steps of inputting a TV confirmation key for confirming the state of TV broadcasting while a TV viewer is watching the DVD(20-21), converting a DVD mode into a TV mode in video software with keeping a DVD mode in sound software(22), confirming TV broadcasting showing up on a screen(23), converting the TV mode into the DVD mode in the video software if the viewer inputs the TV confirmation key again after confirming TV broadcasting(24-25), watching the DVD together with sound(26), converting the DVD mode into the TV mode in sound software if the viewer inputs a stop key(27-28), and watching TV broadcasting together with sound(29).
Patent KR-20010113513-A (KR)
IPC: G02B7/14
Filed: 2001-06-15
Abstract: 렌즈, 특히 마이크로 리소그래피에서 노출 렌즈(2)의 렌즈 소자와 같은 광학 소자(1)를 장착하기 위한 장치에 있어서, 광학 소자(1)는 지지 포인트(8, 9, 10)를 구비한 에지 존에 제공되며, 카운터베어링 포인트(11)는 외부 마운트(3)내의 광학 소자(1)의 지지 포인트(8, 9, 10)에 반대로 배치되며, 베어링 부재(12)는 지지 포인트(8, 9, 10)와 카운터베어링 포인트(11) 사이에 배치되며, 베어링 부재(12)는 지지 포인트(8, 9, 10)쪽으로 배향된 구형 표면을 구비하는 것을 특징으로 하고 있다.
Patent KR-20030000256-A (KR)
Title: Reversible type door assembly for homeappliances and mounting method the same
Inventor: LEE SUN JO
IPC: E05D15/50
Filed: 2001-06-22
Abstract: PURPOSE: A two-way operating door assembly for electric equipment is provided to simplify the directional selection work of a door. CONSTITUTION: The two-way operating door assembly(50) for electric equipment comprises a main door body(60) provided with a door panel(62) and a door liner to open and close a working space in a cabinet selectively, a knob installed to one end of the main door body(60) selectively by screws(72) to operate the main door body(60), and a hinge(80) installed to the other end of the main door body(60) attached with the knob to couple the main door body(60) to the cabinet.
Patent KR-20030001978-A (KR)
Title: a method for forming a contact hole of semiconductor device
Inventor: CHOI DONG GU
IPC: H01L21/28
Filed: 2001-06-28
Abstract: PURPOSE: A contact hole formation method of semiconductor devices is provided to improve a yield and to simplify processing steps by using an SAC(Self Aligned Contact) processing. CONSTITUTION: After forming the first insulating layer(102) on a plug(101), a bit line(103) having a hard mask(104) is selectively formed on the first insulating layer. Spacers(105) are formed at both sidewalls of the bit line(103). After forming a planarized layer(106) on the resultant structure, the second and third insulating layer(107,108) and an anti-reflective coating are sequentially formed on the planarized layer(106). After selectively etching the anti-reflective coating, the third and second insulating layer(108,107), the first insulating layer(102) and the planarized layer(106) are etched to expose the surface of the plug(101) by using gases containing CF, thereby forming a contact hole(111).
Patent KR-20020006583-A (KR)
Inventor: ANTHONY RIVOLI
IPC: H01L27/06
Filed: 2001-06-29
Abstract: PURPOSE: A polysilicon thin film with a low temperature coefficient of resistor is provided to reduce a temperature coefficient to resistance by implanting ions into a polysilicon layer as an insulation layer which is laminated in an integrated circuit, changing a resistance and damaging the polysilicon layer, and annealing it at a specific temperature. CONSTITUTION: When a TCRL(temperature coefficient to resistance) area is formed, a protection oxide to protect etching is laminated on an emitter polysilicon layer(132). Then, BF2 implanting substance is non-selectively implanted into the polysilicon layer. Finally, the substrate is covered with a protection oxide, a TCRL is covered with a photo resist, and then it is etched by an appropriate size. The implantation to a resistor is activated during annealing at 900 deg.C, and the final doping shape of a bipolar device(200) and a MOS device is set. Thus, an amorphous silicon film can be laminated, and its resistivity can be adjusted by adding a dopant.
Patent KR-20030003331-A (KR)
Title: Method for fabricating copper wiring in semiconductor memory device
Inventor: LEE SEOK JAE
IPC: H01L21/28
Filed: 2001-06-30
Abstract: PURPOSE: A method for forming a copper wiring of a semiconductor device is provided to improve EM(Electro-Migration) reliability of the copper wiring layer by forming an AlOx layer on an Al layer. CONSTITUTION: A T-shaped insulating layer pattern is formed on a semiconductor substrate. A diffusion barrier(25) and a copper wiring layer(26) are deposited on the T-shaped insulating layer pattern. A surface of the T-shaped insulating layer pattern is exposed by performing a CMP process for the copper wiring layer(26). An Al layer is deposited on the copper wiring layer(26) by performing a CVD process. A surface of the Al layer is changed into an AlOx layer(28) by oxidizing the Al layer. A passivation layer(29) is deposited on the semiconductor substrate including the AlOx layer(28).
Patent KR-20030003441-A (KR)
Title: A advertisement system using mobile device network and method for employing the same
Inventor: HONG BYUNG GI
Filed: 2001-06-30
Abstract: PURPOSE: An advertising system using a vehicle unit network and a method for operating the same are provided to maximize advertising effect by constructing the wireless Internet or a network system of a vehicle unit and receiving client information recognized through a card being supplied from an ISP, thereby transmitting a corresponding target advertisement and information in accordance with a taste of a client who takes the vehicle unit and executing a quiz. CONSTITUTION: A computer terminal includes an input unit(121) for supporting a user operation, a video processing unit(122) for processing a video including an advertisement, a sound processing unit(124), a printer, a main control unit, and a storage for storing a web browser, quiz related data, and a translating program. A wireless transmitting/receiving unit is interfaced with the main control unit, relays an advertisement and quiz data transmitted from an ISP to a wireless base station through the Internet, receives data, and transmits answer data. A network adapter(160) replaces a function of the wireless transmitting/receiving unit and is interfaced with a PC terminal. A card read/writer(140) is connected to the PC terminal, reads a card issued in the ISP, and transmits the read data to the main control unit. A GPS terminal receives a GPS signal from an artificial satellite, calculates position information, and transmits the information to the main control unit. An image camera(170) captures an image of a user. An infrared rays port(180) performs a transmission/receipt of infrared rays data to a mobile communication terminal of information with respect to a quiz. A card issuing unit issues a card issued in the ISP by a request of the user.
Patent KR-20030006537-A (KR)
Title: Method for compensating birefringence and a optical pickup apparatus adopting it
Inventor: KIM BONG GI
IPC: G11B7/1365
Filed: 2001-07-13
Abstract: PURPOSE: A method for compensating double refraction of an optical disk and an optical pickup device adopting the same are provided to obtain excellent regenerating signals by minimizing the effect of light double refracted at the optical disk. CONSTITUTION: A method for compensating double refraction of an optical disk includes the steps of measuring the intensity of radiation of light emitted from a light source(S5), condensing the light emitted from the light source on the optical disk through an optical divider and an objective lens, measuring the intensity of radiation of the light after passing through a polariscope(S15), comparing the intensity of radiation at the light source with the intensity of radiation after passing through the polariscope(S20), and controlling power of the light source according to the comparison result(S25).
Patent KR-20030012531-A (KR)
Title: Ellipse type binding machine for green vegetables
Inventor: CHOI HONG GI
IPC: B65B27/00
Filed: 2001-08-01
Abstract: PURPOSE: A combining device of vegetables into an oval is provided to improve the efficiency, to increase the income of a farmhouse by automating combining operations. CONSTITUTION: A frame portion(1) is formed by connecting metal bars. A conveyor(A) is formed on the frame portion(1) to carry vegetables. A supplying device(4) of binding strands is formed in the side of the frame portion to supply the binding strands. A cutting blade(24) is formed under the supplying device to cut the binding strands by interlocking with a driving source(M1). A binding bar(31) is contacted to the binding strand and is shrunken its lower ends to combine the center of the vegetables. A support of an absorption plate(27) is installed at a regular angle to the binding bar. A hook rotating chuck(28) is interlocked with the driving source and installed under the frame portion. A combining device contains a detecting sensor(29) of a combining cup(3) to operate a combining operation according to a program of a control device(8) by detecting the combining cup when the combining cup is carried by the conveyor. The control device is formed in the frame portion to perform serial operations by electrically connecting with the conveyor, the supplying device and the cutting blade. Thereby, the serial combining operations are automated.
Patent KR-20030017744-A (KR)
Title: Method of fabricating a large-area holographic diffuser
Inventor: LEE BYOUNG HO
IPC: G02F1/1335
Filed: 2001-08-22
Abstract: PURPOSE: A method for fabricating a large-sized holographic diffusion plate is provided to manufacture a large holographic diffusion plate using split exposure and to obtain uniform diffraction characteristic by controlling exposure time. CONSTITUTION: A large-size holographic diffusion plate is fabricated through split exposure. The split exposure splits a large area into a plurality of exposure regions and sequentially expose the exposure regions. The boundary(B) of an exposure region previously exposed is exposed with smaller quantity of optical energy than the energy used for exposing the other portion(A) of the exposure region. The boundary(C) of an exposure region exposed later is exposed with a larger quantity of optical energy than the energy used for exposing the other portion(A) of the region exposed later.
Patent KR-20030017879-A (KR)
Title: Method for the preparation of barrier ribs of a back side glass for a plasma display panel using a laser
Inventor: CHOI JANG SU
IPC: H01J9/24
Filed: 2001-08-23
Abstract: PURPOSE: A method for forming barrier ribs of a rear glass of a plasma display panel is provided to form barrier ribs with high precision patterns on the rear glass in a convenient manner, without causing environmental contamination. CONSTITUTION: A method for forming barrier ribs, comprises a first step of forming a barrier rib material layer by depositing a barrier rib material on a glass substrate; a second step of baking the material layer of a desired pattern, by radiating laser to the barrier rib material layer through the glass substrate; and a third step of removing the unbaked material layer. The glass substrate is annealed prior to or after removal of the unbaked material layer. The removal of the unbaked material layer is performed by a vacuum suction or purging process.
Patent KR-20010099081-A (KR)
Title: 노면 청소 리어커
Inventor: CHOUNG HYUK SOO
IPC: E01H1/02
Filed: 2001-08-27
Abstract: 리어커의 크기 정도로 소형화하여 밧데리를 이용하여 진공 브러쉬를 사용하며 소음 없이 작업이 가능하고, 연료를 사용하지 않아 무 매연과 무소음으로 작업이 가능하게 되며, 장비의 자동화 및 소형화 동력비용을 절감하며, 새벽 청소 노무자 및 각 기업 청소 노무자의 업무를 줄여 줄 수 있으며, 기존 소방도로 및 일반도로 물받이에 잡 쓰레기(흙, 먼지, 미세 분진, 담배꽁초, 낙엽)로 인하여 기우나 장마로 인한 하수구로 흘러들어 침수되는 것을 방지할 수 있게 하여 도시 환경 미화에 일조 함에 그 목적이 있는 것이다.
Patent KR-20030020681-A (KR)
Title: Matching structure for console upper cover and A/T indicator of automobile
Inventor: PARK SU HAN
IPC: B60K20/02
Filed: 2001-09-04
Abstract: PURPOSE: Matching structure of an upper cover of a console and an automatic transmission indicator for a vehicle is provided to improve the quality and to prevent the uneven gap between the upper cover of the console and the indicator of the automatic transmission by applying a flexible strip. CONSTITUTION: A gap is formed between an upper cover(10) of a console and an automatic transmission indicator(11), and an elastic piece(18) is formed in a strip(14). The strip and a retainer(15) supporting the strip are installed in the gap between the console upper cover and the automatic transmission indicator to absorb tolerance of the body with elastic force of the elastic piece. The strip is combined with the retainer by a pin(17) of the upper cover and a nut spring(16). A strip body(20) of the strip is inserted to a cover placing groove(19) formed around the upper cover of the console. The uneven gap from tolerance is absorbed with applying the flexible piece to the strip.
Patent KR-20030028673-A (KR)
Title: Passive and active magnetic bearing by using the Lorentz force
Inventor: HWANG YO HA
IPC: F16C39/06
Filed: 2001-09-25
Abstract: PURPOSE: A passive and active magnetic bearing is provided to prevent a coil, to which DC current is applied, from being moved from a predetermined position by varying flux density depending on a position of the passive and active magnetic bearing. CONSTITUTION: A rotor(10) is provided at the center of a passive and active magnetic bearing. A coil(14) is securely fixed to a stator. A permanent magnet(12) is inserted into the rotor(10). Magnetic flux generated from an N-pole of the permanent magnet(12) is forwarded to an S-pole of the permanent magnet(12) through an outer gap. The outer gap is gradually narrowed as it reaches the center of the passive and active magnetic bearing. Magnetic flux is higher at the narrowest portion of the outer gap. That is, the coil(14) placed adjacent to the narrowest portion of the outer gap is subject to greater Lorenz force. If the rotor(10) is precisely positioned at the center of the passive and active magnetic bearing, the coil(14) is biased towards an outer portion of the rotor(10), so inwardly biased force is applied to the rotor(10).
Patent KR-20030026719-A (KR)
Title: Handphone Cover and its Making Method
Inventor: WOO GI BYEONG
IPC: H04B1/38
Filed: 2001-09-27
Abstract: PURPOSE: A cellular phone cover and a manufacturing method thereof are provided to make the cellular phone cover by using urethane or resin such as natural, or artificial rubber etc. CONSTITUTION: A cover(10) is constructed by a white layer(1), a color layer(2) and a transparent layer(3) as the same shape of a cellular phone by using rubber resin such as urethane, natural rubber and artificial rubber resin. Penetration holes(4,5), buttons and screen of the cellular phone, are formed on portions of the white layer(1) and the color layer(2), and filled with rubber resin of the transparent layer(3). An one side of the cover(10) is opened to insert to the cellular phone, and preferably its thickness is formed within a thickness of 0.3mm.
Patent KR-20030030112-A (KR)
Title: Opening and closing system for door of bus
Inventor: JANG U JEONG
IPC: E05F15/02
Filed: 2001-10-08
Abstract: PURPOSE: A door operating system for a bus is provided to prevent an electric discharge of a battery caused by keeping a door opened for a long time. CONSTITUTION: The door operating system for a bus comprises a door switch(12) connecting the current of a battery(1) supplied by a main switch(3) to primary and secondary magnetic valves(18,19), a door cylinder(13), a piston(14) and a rod(15) providing working force to open and close a door by moving forward and backward in the door cylinder(13), an air tank(16) providing high-pressure air, a primary magnetic valve(18) supplying or discharging high-pressure air of the air tank(16) to the front of the piston(14), and a secondary magnetic valve(19) supplying or discharging high-pressure air of the air tank(16) to the backside of the piston(14). And the current input unit of the primary magnetic valve(18) is connected to the 'close' terminal output unit of the door switch(12), and the current input unit of the secondary magnetic valve(19) is connected to the 'open' terminal output unit of the door switch(12).
Patent KR-20030030660-A (KR)
Title: A multipurpose sporting goods
Inventor: KIM KYONG SHIK
IPC: A63B23/00
Filed: 2001-10-12
Abstract: PURPOSE: Provided is a multipurpose exercise instrument which includes a rotation bar and grip for moving wrist and arm and a massage pad and roller so that it helps to strengthen users' back, shoulder, wrist and arm. CONSTITUTION: The multipurpose exercise instrument comprises the parts of: a sitting board(1) which is formed in a chair type; a prop(3) which is formed upwardly from a bracket for the sitting board; a cylindrical massage pad(5) which is inserted into the lower part of the prop and rotated to massage users' waist; a spring(4a) which is fixed at the prop and the massage pad respectively to supply elastic power to the massage pad; a rotation bar for moving arm(7) which is fixed at a connection bushing of the prop; a rotation grip for moving wrist(8) which receives elastic power from a spring(4b) at both ends of the rotation bar for moving arm; and a massage roller(9) which is rotated at the upper and the lower part of the connection bushing to massage users' shoulder and neck.
Patent KR-20030033676-A (KR)
Inventor: LEE UN HAK
IPC: H01L21/66
Filed: 2001-10-24
Abstract: PURPOSE: An apparatus for analyzing semiconductor sample is provided to effectively discharge electric charges accumulated in a semiconductor sample by installing a conductive contact part. CONSTITUTION: A semiconductor sample(110) is loaded on a sample support pedestal(100). A ground wire(140) is connected to the lower portion of the sample support pedestal(100). A connection part(130) is located on the edge portion of the sample support pedestal(100) for electrically connecting the sample support pedestal(100) with a conductive contact part(120), wherein the conductive contact part(120) is capable of contacting an analysis region of the semiconductor sample(110). Preferably, the connection part(130) is provided with a conductive connection portion and a position shift part(150) for controlling the position of the conductive contact part(120). Preferably, the conductive contact part(120) is one selected from group consisting of Au, Pt, and Ag.
Patent KR-20010110240-A (KR)
Title: 가정용 주차장치
Inventor: KWEON YOUNG SIK
Filed: 2001-10-30
Abstract: 본 발명은 가정용 주차장치에 관한 것으로 담장 안쪽에 수직방향으로 사방에 지주(1)이 지지되여 상단과 중앙에 프레임(2)과 사방에 지지되여 주차할 수 있도록 직육면체의 골조형으로 구성 지지되여 있으며, 
     프레임(2)에 카바(3)을 각각 고정하여 운반볼트(4)에 나트축(5)를 끼우고 나트축(5)에 중심로울러(6)을 양쪽에 끼우고 양가에 수평가이드로울러(7)을 끼워서 프레임(2)에 고정하고 모터기야(8) 그레임(2) 고정하고 볼트기야(9)를 운반볼트(4)에 고정하였으며 
     지주(1) 안쪽에 수평가이드(10)을 각각 고정하고 끝에 고정로울러(11)을 각각 한쌍씩 고정하고 수평가이드레일(12)를 설치하여 끝에 이송로울러(13)을 각각 고정하고 수평가이드레일(12)에 운반로울러(14)를 끼우고 축을 이송브라켓(15)에 고정하고 이송브라켓(15)에 전자석 잠금쇠(22)를 고정하고 걸림쇠(24)를 수평가이드레일(12)에 고정하고 수평가이드레일(12)에 브라켓(12)를 수평가이드(10)에 각각 걸어서 수평가이드레일(12)에 고정하고 이송브라켓(15) 양쪽에 이송가이드(16)을 각각 양쪽에 고정하여 이송가이드(16) 나트축(5)에 끼웅고 권치로울러(17)을 안쪽에 고정하고 도로쪽 이송가이드(16)에 와이어(19)를 양가에 와이어크렘프(23)으로 고정하고 안쪽 양가에 압축스프링 카바(18)을 고정하고 와이어(19)를 스프링카바(18) 밑에서 끼워서 상단에 와이어크렘프(23)으로 고정하고 와이어(19)를 주차대(20) 상단에 고정된 도로레(21)에 걸어서 권치로울러(17)에 감어서 각각고정하였으며, 
     작동을 설명하면 도시안된 스위치를 작동하면 주차대(20)이 프레임(2)에 밀착되어 있다가 권치로울러(17)이 와이어(19)를 권치하면 주차대(20)이 프레임(2)에서 약간 들이면 권치로울러(17)이 자동으로 정지하고 모터기야(8)이 돌면 볼트기야(9)가 운반볼트(4)를 돌이면 나트축(5)가 중심로울러(6) 밑면 중심로울러(6)이 수평가이드레일(7)을 타고 이송가이드(16)을 나트축(5)가 밑면 수평가이드레일(12)가 도로쪽으로 이동 운반로울러(14)가 고정로울러(11)에 이동하면 전자석 잠금쇠(22)가 걸림쇠(24)에서 해체 운반로울러(14)가 수평가이드레일(12)를 타고 끝에 오면 모터기야(8) 정지되고 권치로울러(17)이 와이어(19)를 풀면 주차대(20)이 도로에 정지하며 반대로 작동하면 원위치하며 
     그러므로 공간을 이용해서 주차난을 크게해소할 수 있도록 하였다.
Patent KR-20030039468-A (KR)
Inventor: PARK MAN HUI
IPC: F01P11/02
Filed: 2001-11-13
Abstract: PURPOSE: A radiator cap is provided to prevent leakage of coolant through a pressure valve by preventing deformation of a rubber member of the pressure valve due to a protrusion of a filler neck. CONSTITUTION: An annular downward protrusive part(33) is formed on a bottom of a pressure valve(32) so that an inner circumference thereof contacts with a periphery of an upward protrusive part(23) of a filler neck(22) to prevent heat distortion of the bottom of the pressure valve made of rubber due to the upward protrusive part. Thermal strain of the pressure valve due to the upward protrusive part is prevented by the downward protrusive part though force is given to the pressure valve by the upward protrusive part when a radiator cap is opened and closed for supplying coolant or measuring amount of coolant. The downward protrusive part is expanded by heat continuously transmitted from high temperature coolant to block a surrounding space through which coolant leaks so as to improve sealing performance and to prevent over-heating of an engine.