baber/WOPTO huggingface dataset:
Patent KR-20030057939-A (KR)
Title: Method for detecting defect of wafer formed pattern
Inventor: CHOI YEONG HYEON
IPC: H01L21/66
Filed: 2001-12-29
Abstract: PURPOSE: A method for detecting the defect of a wafer having a pattern is provided to be capable of reducing detecting time and improving the accuracy of a detecting process by inspecting whether defect exists, or not, using each detector and write box at corresponding regions of the wafer. CONSTITUTION: A pattern formed wafer is divided into at least two regions(21,22) by using the center portion of the wafer as a reference. Defects of the wafer are inspected by using each detector corresponding to regions and each write box corresponding to the detectors. The defect detecting process is carried out by comparing the difference of brightness between adjacent regions. At the time, the first and second detector inspecting region(21,22) are used as the two regions.
Patent KR-20010075252-A (KR)
IPC: H01Q1/12
Filed: 2000-04-14
Abstract: 한사람의 작업자로도 자동차용 안테나를 장착가능하게 하는 것을 목적으로서, 베이스부 (3) 의 하면으로부터 돌출되는 직사각형상 돌출부의 양측면에 위치하도록, 베이스부 (3) 에 형성한 각구멍에 고정판이 부착된 기판 브래킷 (9) 의 측판을 삽입통과시킨다.     이 측판에는 탄성편 (4a) 이 형성되어 있다.     직사각형상 돌출부를 연이어 신장된 원통형상 돌출부 (13) 를 루프패널에 형성한 장착구멍에 삽입해 가면, 측판에 형성된 탄성편 (4a) 이 장착구멍을 통과하여, 그 이측 (裏側) 에 걸어맞추게 된다.     이로써, 안테나본체가 루프패널에 임시고정되어, 작업자는 안테나본체로부터 손을 뗄 수 있다.     따라서, 작업자는 차체내로 이동하여 장착너트 (2) 를 원통형상 돌출부 (13) 에 나사식으로 부착하여, 자동차용 안테나를 루프패널에 장착할 수 있다.
Patent KR-20010080429-A (KR)
IPC: E04B1/32
Filed: 1999-11-12
Abstract: 다면체 골격을 조립한 후, 이것에 내장, 외장을 설비하여 구형(球形) 돔을 구축하는 돔 구축 방법이다. 
     조립된 시점에서 다면체 골격의 각 정점 위치에 배치되는 조인트로서, 당해 각 정점으로부터 연장되는 다면체 골격의 각 변 방향으로 복수매의 접속 날개를 가지는 복수개의 조인트와, 복수개의 프레임재를 구형 돔의 다면체 골격 구축용 부재로서 채용한다. 
     3개의 조인트와 3개의 프레임재를 사용하여, 다면체 골격의 기본 단위인 삼각 프레임을, 3개의 조인트를 정점으로 하고, 3개의 프레임재를 각 변으로 하여, 접지되어 있는 상태에서 조립한다. 또한, 동일한 부재와 조인트를 사용하여, 상기 접지되어 있는 삼각 프레임의 주위에 새로운 삼각 프레임을 조립하고, 상기 접지되어 있는 삼각 프레임 중 하나의 정점에 위치하고 있는 조인트를 정점으로 하여, 상기 접지되어 있는 삼각 프레임을 일면으로 하는 오각추, 육각추의 다면체 골격을 조립한다. 
     이렇게 하여 다각추의 다면체 골격이 조립될 때마다, 이것을 회전시켜, 상기 접지되어 있는 삼각 프레임과는 상이한 삼각 프레임을 새로이 접지하고, 계속해서, 동일한 조립 작업을 반복하여 다면체 골격을 조립한다. 
     다음에, 당해 다면체 골격에, 내장, 외장을 설비하여 구형의 돔을 구축하는 돔 구축 방법.
Patent KR-20010101440-A (KR)
IPC: C07D417/12
Filed: 1999-12-22
Abstract: 본 발명은 대뇌 허혈 및 졸중의 예방 및 치료용 의약을 제조하기 위한 하기 화학식 I의 화합물 및 그의 생리학상 허용되는 산부가염의 용도에 관한 것이다. 
     <화학식 I> 
     
       
     
     식 중, 치환체들은 명세서에서 정의된 바와 동일하다.
Patent KR-20020000146-A (KR)
IPC: G07F7/00
Filed: 2000-03-17
Abstract: 본 발명은 주차장용 서버(2)에 접속되어 있는 하나 이상의 주차 티켓 발행기(10)를 사용하여, 주차요금이 지불되게 하는 주차장 관리 방법에 관한 것이다.  본 발명은, 이동 전화 시스템(3)에 접속되는 이동 전화기(20)를 갖고 있는 사용자가 상기 주차장용 서버(2)에 적어도: 자기 차량의 주차 위치의 인식에 관한 정보, 주차 시간에 관한 정보를 전송하고, 상기 주차장용 서버(2)가 상기 주차 티켓 발행기(10)에 적어도 상기 주차 시간에 관한 정보를 전송하며, 상기 주차 티켓 발행기(10)가 주차 허가 관리 수단(12, 13, 14)에 적어도 상기 주차 시간에 관한 정보를 공급하는 것과 같이 작동하는 것을 특징으로 한다.
Patent KR-20010110478-A (KR)
Title: 메모리 셀 어레이 및 그 제조 방법
IPC: H01L21/8242
Filed: 2000-03-27
Abstract: 본 발명은 메모리 셀의 트랜지스터에 관한 것이다. 트랜지스터는 상부 소스/드레인 구역(S/Do) 및 하부 소스/드레인 구역(S/Du)에 구비된다. 상기의 구역은 제1의 트랜치(G1) 및 제2의 트랜치(G2)에 위치하며, 상기의 트랜치는 서로 직교한다. 절연된 워드라인(W)은 상부 소스/드레인 구역(S/Do)을 덮고 있으며 제2의 트랜치 방향으로 돌출된 돌출부를 포함하고 있다. 제1의 트랜치(G1)에 배치되고 상부 소스/드레인 구역(S/Do)과 측면에서 인접한 전도구조(L)은 상기구조(L)위에서 접점(K)와 접촉하고 있다. 접점(K)은 인접한 워드라인(W)사이에 배치되고 메모리 셀의 콘덴서(P1, Kd, P2)와 연결된다. 그리고 상기의 콘덴서는 워드라인상에 배치된다.
Patent KR-20010108511-A (KR)
IPC: C05F9/02
Filed: 1999-05-07
Abstract: 본 발명에 따른 음식물 쓰레기 처리 장치(1)는, 미리 발효 미생물을 파종(播種)한 발효 촉진제 및 음식물 쓰레기 등의 유기물을 밀폐 가능하게 수용하는 대략 역원뿔형(逆圓錐形)의 처리조(10)와, 처리조(10)를 연직 방향으로 관통하여 지지되고, 상단 또는 하단에 접속된 모터에 의해 회전 구동되는 회전축(12)과, 회전축(12)에 연직 방향으로 간격을 두고 캔티레버형으로 고정되고, 발효 촉진제 및 유기물을 분쇄, 혼합하는 복수의 커터날(14)과, 그리고, 처리조(10)의 연직 방향으로 간격을 둔 복수의 부위에 있어서의 온도를 검출하는 다수의 온도 센서를 구비하여 구성되어 있다. 
     처리조(10)가 역원뿔형이며 또한 회전축(12)에 장착된 복수의   커터 날(14)로 행하므로, 처리조(10)의 높이 방향의 모든 위치에서 적은 회전 저항에도 불구하고 충분한 분쇄, 혼합을 행할 수 있다.
Patent KR-20020007414-A (KR)
Title: Error correction circuit and method for a memory device
IPC: G11C29/42
Filed: 2000-05-16
Abstract: An error correction circuit and method for a memory device use an error correcting block code such as a Hamming code to detect and correct errors, if any, in the data bytes. The error correction circuit and method are capable of improving the speed of error correction to reduce delays in the external data access time.
Patent KR-20020014819-A (KR)
Title: Polyolefin composition with improved impact properties
IPC: B29K23/00
Filed: 2000-06-23
Abstract: The present invention includes a composition comprising a coupled impact propylene copolymer. Preferably, the coupled impact propylene copolymer has an elastomeric phase that is present in an amount of at least 9 weight percent of the coupled propylene copolymer. Articles formed from the coupled propylene copolymer exhibit improved directionally balanced impact properties as compared with articles formed form comparable noncoupled impact propylene copolymers and also exhibit improved ductile-to-brittle transition temperatures compared with comparable noncoupled impact propylene copolymers. The invention also includes methods for making the coupled impact propylene copolymers using coupling agents, preferably, poly(sulfonyl azides). The invention further includes articles of manufacture that are made from the coupled impact propylene copolymer of the invention.
Patent KR-20020022729-A (KR)
IPC: B42D25/29
Filed: 2000-06-26
Abstract: 본 발명은 제1 영역(7) 및 제2 영역(8)을 적어도 포함하는 광 회절 필터를 갖는 투명한 플라스틱 기판(2)으로 이루어진, 은행권(지폐), 신용카드, 여권, 통행증 등과 같은 보안관련 물품에 관한 것으로서, 제1 및 제2 회절구조 또는 격자가 각각의 영역에 형성되는 구성을 갖는다. 상기한 제1 회절구조는 소정의 시각으로부터 적어도 각도 θ로써 상기 제1 영역을 통해 전송되는 다색 광의 적어도 제1 스펙트럼 성분을 회절시킴으로써 상기한 시각에서 제1 선택 색을 차별적으로 투영하도록 동작되고, 상기 제1 선택 색은 상기 광 회절 필터가 상기 시각에서 관찰될 때 투영된 보안화상의 적어도 일부를 형성한다.
Patent KR-20020022733-A (KR)
Title: 에어백용 가스 발생기의 냉각제 및 그 제조 방법
IPC: B60R21/264
Filed: 2000-07-12
Abstract: 축방향으로 압축하면서도, 축방향의 밀도의 불균일을 적게 한 에어백용 가스 발생기의 냉각제를 제공한다. 
     와이어 재료로 이루어지는 성형체를 축방향으로 압축하여 구성하고, 축방향 상반분에 있어서의 반경 방향의 압력 손실과, 축방향 하반분에 있어서의 반경 방향의 압력 손실과의 차이의 절대치가, 20℃의 분위기하 250Ｌ/분의 유량에서 10mmH 2 O 이하인 냉각제이다.
Patent KR-20030059696-A (KR)
Inventor: KIM BO YEAN
IPC: B60R7/05
Filed: 2002-01-04
Abstract: PURPOSE: A sun visor including an office system is provided to transact business conveniently in the vehicle room by separably mounting the office system to the sun visor and adjusting the direction of the sun visor. CONSTITUTION: A sun visor is composed of a frame, an office system installed inside the frame, a stand, a shaft connected to the office system and the stand, a ceiling assembling part(10) and a sun visor assembling part(50) detachably combining the ceiling assembling part. The office system has a first moving body(411) moved according to pressure of the ceiling assembling part and formed in a first guide hole(401) of the sun visor assembling part, a second moving body(413) installed in a second guide hole(403) and lifted up and down according to the position of the first moving body, a third moving body(415) formed in a third guide hole(405) and moved back and forth in lifting up and down the second moving body, and a cam(430) transmitting pressure to the end of a turning door(417) according to pressure of the third moving body.
Patent KR-20030060144-A (KR)
Title: Trench isolation method
Inventor: JIN YU SEUNG
IPC: H01L21/76
Filed: 2002-01-07
Abstract: PURPOSE: A trench isolation method is provided to be capable of preventing the recess of an isolation layer and a liner by forming a capping insulating layer on the isolation layer and the liner and reducing the aspect ratio of a trench by removing a hard mask layer before forming the isolation layer. CONSTITUTION: After sequentially depositing a buffer insulating layer(102) and a hard mask layer on a semiconductor substrate(101), the predetermined portion of the semiconductor substrate is exposed by selectively patterning the resultant structure. A trench(107) is formed by selectively etching the exposed portion of the semiconductor substrate. After removing the hard mask layer, a conformal liner layer is formed on the entire surface of the resultant structure. An isolation layer(106a) is formed in the trench. After depositing a capping insulating layer on the resultant structure, a capping insulating pattern(108a) and a liner(105a) are formed by selectively etching the capping insulating layer and the conformal liner layer.
Patent KR-20020035012-A (KR)
Title: washing-enduring high density micro-fiber fabric
Inventor: HUH JIN
IPC: D03D15/00
Filed: 2002-01-09
Abstract: PURPOSE: A microporous fabric capable of shielding harmful microorganism and ultrafine byproducts induced therefrom and having an average pore size from 0.1 to 4.0 micrometer, high moisture vapor permeability and washing fastness is provided which can be used as articles for prevention of various allergies such as bed cover, baby garment or the like. CONSTITUTION: This microporous fabric is prepared by processing a synthetic ultrafine fiber such as polyester ultrafine fiber and/or polyester/nylon conjugate fiber at a temperature of 65 to 75deg.C at a speed of 65 to 70 m/min, at a pressure of 25 to 30 ton after weaving. The microporous fiber has an average pore size from 0.1 to 4.0 micrometer and satisfies the formula: Ha<=20% in which Ha is a ratio of Hmax based on the total number of pores and Hmax is a number of pores in which a pore size of the total number of pores is more than the average pore size.
Patent KR-20020023332-A (KR)
Title: credit card approval system and credit card terminal
Inventor: KANG SEONG JIN
Filed: 2002-01-17
Abstract: PURPOSE: A credit card approval system using an Internet exclusive line and a card terminal are provided to enhance the processing speed of approval with low cost as well as a stable approval process by using a fast and cheap Internet exclusive line. CONSTITUTION: The system comprises steps of a card terminal(10) transmitting the card information to a connection server(31) of system management company(30) by using an Internet exclusive network(20), an approval server(32) of system management company transmitting an approval request signal with the card information to a card company(40) according to the kinds of card, receiving the card management information including an approval number and the information of steal or lost from the card company requesting an approval, providing the received card management information to the card terminal and outputting the result through the printer. The card terminal is equipped with a LAN card and is able to use an Internet exclusive network such as ADSL(Asymmetric Digital Subscriber Line).
Patent KR-20020075212-A (KR)
Inventor: KOBAYASHI HIROYUKI
IPC: G11C11/4076
Filed: 2002-01-21
Abstract: PURPOSE: A semiconductor memory device and an information processing system are provided which enable optimum operation regardless of the number of data bits exchanged with a control device for controlling the semiconductor memory device, and shortens the operation cycle time of the semiconductor memory device, and in particular, shortens a command supply interval during random access, thereby enhancing the transfer rate of input/output data. CONSTITUTION: A semiconductor memory device having n (n>1) banks comprises an address input circuit(1) for receiving an input address, and a readout circuit(2) for sequentially reading data corresponding to one address inputted via the address input circuit, from m banks. A control device for controlling the semiconductor memory device. A data output circuit(3) outputs the data read by the readout circuit from the m banks to outside as collective data.
Patent KR-20020069109-A (KR)
Inventor: HUR BYUNG WAN
IPC: B23K3/06
Filed: 2002-01-24
Abstract: PURPOSE: A soldering iron with a lead feeder is provided to simplify soldering operation and increase productivity by additionally installing a lead supply means capable of automatically supplying lead at the soldering iron. CONSTITUTION: The soldering iron with a lead feeder comprises a body consisted of a handle in which a lead coiled lead bobbin is installed, a soldering iron(120) which is projected to the front side of the handle, and at an end part of which a heating tip(122) is formed, and a lead supply pipe(130) which is installed at the side direction of the soldering iron(120) to guide lead(142); a lead transfer part consisted of a guiding pipe for smoothly transferring the lead(142) coiled around the lead bobbin, a guiding member by which the lead(142) is transferred forward, but not transferred backward, a transfer member on which a latch is formed to transfer the lead, and a trigger(240) operating the transfer member; and a soldering iron moving part consisted of an operation plate(310) on the lower part of which a pressed element is formed to move the soldering iron(120), a guide member(320) guiding movement of the soldering iron so that the heating tip(122) of the soldering iron is contacted with the lead moved to the front end of the lead supply pipe(130) by the operation plate(310), and a lever(330) for maintaining or releasing the moved state of the soldering iron.
Patent KR-20020077798-A (KR)
Title: Oxide magnetic material and coil part using the same
Inventor: SAITO YUTAKA
IPC: C01G49/00
Filed: 2002-02-06
Abstract: PURPOSE: To provide an oxide magnetic material in which its saturated flux density Bs and initial permeability μi are high, the temperature characteristic of the initial permeability μi is excellent and an anti-stress characteristic is also excellent, and to provide a coil part having a core using the same. CONSTITUTION: This oxide magnetic material is made of Fe2O3 of 46.0-50.0 mol%, ZnO of 20.0-30.0 mol%, CuO of 7.1-10.0 mol%, MgO of 1.0 mo% or less (excluding 0 mol%), and NiO for remaining part. A coil is provided with a core made of such an oxide magnetic material.
Patent KR-20020024244-A (KR)
Inventor: OH SEOI JUNG
IPC: B61H11/06
Filed: 2002-02-08
Abstract: PURPOSE: A brake device for a train is provided to reduce noise and to prevent the breakage of the shaft or bearing of a train wheel by reducing the uneven wear of the train wheel when a train stops. CONSTITUTION: A brake device for a train includes a temperature sensing unit(30) for sensing the temperature of a train wheel(15) in friction with a brake shoe(20), a pneumatic pressure discharge outlet(35) for discharging the compressed air supplied to a brake drum(10), and a valve(40) for controlling the pressure of the compressed air supplied to the brake drum by opening and closing the pneumatic pressure discharge outlet by a signal outputted from the temperature sensing unit. A control unit(45) is prepared between the temperature sensing unit and the valve. If the temperature of the train wheel is higher than a reference temperature, the control unit opens the valve to discharge the compressed air supplied to the brake drum.
Patent KR-20030072006-A (KR)
Title: Structure for drain hole of water pump for automobiles
Inventor: KIM JEONG UK
IPC: F01P11/02
Filed: 2002-03-05
Abstract: PURPOSE: A structure of a drain hole in a water pump for a vehicle is provided to disperse water in the air by flowing water from the water pump toward the inside of a pulley after discharging through the drain hole in a water pump housing. CONSTITUTION: A guide passage(130) is integrally formed under a drain hole(120) to guide water from the drain hole to the inside of a pulley(200). The water through the drain hole is fallen into the inside of the pulley to be rotated fast through the guide passage. The water is divided to very fine size and dispersed in the air by the rotational centrifugal force of the pulley. Thereby, the corrosion of other components is prevented and the reliability toward a customer is improved.
Patent KR-20030072030-A (KR)
Title: Quantitative analysis apparatus for phenomena of glare and the method for the same
Inventor: CHOE CHUL MYONG
IPC: G06F19/00
Filed: 2002-03-05
Abstract: PURPOSE: A device and a method for quantitatively analyzing a glare phenomenon are provided to quantitatively analyze a condition of a glare patient and a degree of the medical cure. CONSTITUTION: The device comprises a CPU(300), a memory(350), a pointing device(200), and a display part(500). The pointing device(200), such as a mouse, a track ball, a touch pad, a light pen or a tablet, inputs the position information of a circumference of the glare to the CPU(300) by making the patient feeling the glare from a light source screen displayed on the display part(500) point the circumference. A display controller(400) displays the display information processed by the CPU(300) to the display part(500). The memory part(350) stores the light source screen information.
Patent KR-20030075876-A (KR)
Title: Negative ion nebuliser
Inventor: EOKUM IN DO
IPC: A61M11/02
Filed: 2002-03-21
Abstract: PURPOSE: A negative ion nebulizer is provided to effectively mix and spray a medicine solution received in the nebulizer by the use of negative-ionized compressed air, thus achieving high-degree merchantability and quality enhancement. CONSTITUTION: In the nebulizer(16) adapted to mix and spray a medicine solution contained therein by the use of compressed air, which is filtered through an air filter, a negative ion generator(20) is integrally connected to the nebulizer and adapted to ionize the compressed air supplied into an air supply device(14) for the negative ionization thereof, thereby being supplied into the nebulizer.
Patent KR-20030082235-A (KR)
Inventor: PARK JAE SEOK
IPC: C01B13/11
Filed: 2002-04-17
Abstract: PURPOSE: An ozone generator with no air pump and fan is provided to produce ozone gas, thereby having a compact size. CONSTITUTION: The ozone generator comprises a power receiving unit(110) for receiving a power, a pulse generator(120) for generating a pulse signal, a high voltage convertor(130) for converting the pulse signal to a high voltage, and electric field converting unit(150) for generating one direction electric field using the high voltage, and an electro-discharging unit(140) for causing electro-discharge by receiving the one direction electric field to discharge ozone out, wherein the electric field converting unit(150) includes a first and a second capacitors and a first and a second diodes.
Patent KR-20030082719-A (KR)
Inventor: WOO SAM YONG
IPC: G01L27/00
Filed: 2002-04-18
Abstract: PURPOSE: An automatic weight mounting device is provided to install a weight in a measuring apparatus by performing a three-axis movement and a weight gripping action using a ball screw, and a stepping motor for driving a shaft. CONSTITUTION: A weight storing chamber(50) is installed on a table(5) so as to store weights(51) therein. A pressure meter(60) is installed on the table(5) in opposition to the weight storing chamber(50). A weight gripping device(30) is provided to grip the weights(51). The weight gripping device(30) has two grippers. A conveying unit(20) is provided to move the weight gripping device(30). The conveying unit(20) has a first conveying shaft(1) for conveying the weight gripping device(30) in a first direction and a driving motor for driving the grippers. A second conveying shaft(2) is provided to convey the conveying unit(20) in a second direction, which is perpendicular to the first direction.
Patent KR-20030082723-A (KR)
Title: Refresh circuit having variable restore time according to semiconductor operating mode and the method of refresh
Inventor: PARK JONG YEOL
IPC: G11C11/407
Filed: 2002-04-18
Abstract: PURPOSE: A refresh circuit having a variable restore time according to an operation mode of a semiconductor memory device and a refresh method thereof are provided to prolong a refresh time in a standby state. CONSTITUTION: A self refresh oscillator(200) generates a clock signal having a fixed period. A refresh pulse generator(300) generates the first and the second refresh signal by receiving the above clock signal. A standby refresh signal generator(400) generates a standby refresh signal by receiving the second refresh signal and a chip selection signal indicating an active state and a standby state of the semiconductor memory device. And a word line pulse generator(500) generates a word line driving signal by receiving the first refresh signal and the standby refresh signal. A pulse width of the word line driving signal generated in the standby state is longer than the pulse width of the word line driving signal generated in the active mode.
Patent KR-20030084001-A (KR)
Title: Method for providing Emergency Alarm Service using Mobile Terminal with IC Chip
Inventor: KIM JAE JIN
IPC: H04W4/02
Filed: 2002-04-24
Abstract: PURPOSE: A method for giving an emergency alarming service by using a mobile terminal is provided to store emergency information in the terminal, and to alarm an emergency center by transmitting storage information and position information by using a hot key during emergency, thereby quickly understanding the emergency. CONSTITUTION: When a specific button is inputted, a mobile terminal(10) inquires into an emergency item corresponding to the specific button among emergency items stored in an IC chip(11), manages the inquired emergency item, and transmits emergency information to an emergency processing server(20) with self position information(S301-S304). The emergency processing server(20) searches a processing institution corresponding to the emergency item located in a shortest distance, based on the transmitted information, and informs the corresponding institution of emergency position information with contents of the emergency item(S305-S308).
Patent KR-20020038653-A (KR)
Inventor: KIM YOUNG SUN
IPC: H01L23/50
Filed: 2002-04-24
Abstract: PURPOSE: A tape substrate of a tape carrier package(TCP) for a semiconductor is provided to prevent a lead from being deformed in a process after the lead is formed, by forming a supporting unit in the lead while using a base material to form a circuit and the lead. CONSTITUTION: The end of the lead is fixed to polyimide film(1) when a metal lead(4) is formed on the polyimide film through a patterning process and an etch process. A punching hole is formed between the lead fixed to the polyimide tape and an opposite lead to fabricate a separated supporting unit.
Patent KR-20030087779-A (KR)
Title: Fastening structure of loop pipe hermetic compressor
Inventor: PARK SEONG UN
IPC: F04B39/10
Filed: 2002-05-09
Abstract: PURPOSE: A structure for coupling loop pipe of a hermetic compressor is provided to simplify structure thereof, to minimize pulsating noise of working fluid, and to allow a frame and a cylinder to be easily manufactured. CONSTITUTION: A structure includes a cylinder(60) having a compression chamber(62) and discharge chambers(70,70') formed near the compression chamber to receive compressed working fluid; a dummy fence(72) protrusively formed on one side of the cylinder, an inside of one of the discharge chamber, and having a coupling hole(73) formed thereon; a loop pipe(90) having a bolt ring(80) formed on a front end thereof to correspond with the coupling hole of the dummy fence and have an inside connected with a connecting hole(75) of the cylinder, and connected with the discharge chamber; and a coupling bolt(85) penetrating the bolt ring and the connecting hole, and coupled to the coupling hole of the dummy fence to fix the bolt ring. The dummy fence is formed to be extended toward a part of the discharge chambers opened and covered by a frame(50), and to partition a discharge channel(65) through which working fluid is introduced into the discharge chamber and the connecting hole through which working fluid is discharged from the discharge chamber.