baber/WOPTO huggingface dataset:
Patent KR-20060122699-A (KR)
Title: Screw refrigerating device
Inventor: TSUBOI NOBORU
IPC: F25B1/047
Filed: 2006-05-01
Abstract: A screw refrigerating device is provided to induce refrigerant from an economizer to a cooling jacket instead of a rotor receiving space of a motor, for preventing leakage of refrigerant gas from the rotor receiving space to a suction hole of a screw compressor and removing axial sealing for the leakage, thereby simplifying the structure. A screw refrigerating device includes a refrigerant circulation path(L1) including a screw compressor(11) driven by a motor(11c). An economizer(13) is mounted between a condenser and a main expansion valve(14) of the refrigerant circulation path, and has a super-cooling path(12) for carrying out heat exchange between refrigerant branched from the circulation path with refrigerant of the circulation pass after passing through an auxiliary expansion valve(13a). An economizer path(L3) is extended from the super-cooling path to an inlet of a cooling jacket(23), which cools the motor. A gas cooling path(L4) is extended from an outlet of the cooling jacket to an intermediate pressure part(33) of the screw compressor. An auxiliary expansion valve controller such as a temperature sensing case(17) detects refrigerant temperature of the gas cooling path and controls an opening degree of the auxiliary expansion valve according to the detected temperature. The intermediate pressure part is not connected to any one of an inlet and an outlet of the screw compressor. The auxiliary expansion valve controller makes the refrigerant in the economizer path to be in the gas/liquid mixture state, and the refrigerant in the gas cooling path to be in the gas state.
Patent KR-20070108760-A (KR)
Title: Method of charging rechargeable battery and protection circuit for rechargeable battery
Inventor: YANG JONG WOON
IPC: H02J7/04
Filed: 2006-05-08
Abstract: A method for charging a rechargeable battery and a protection circuit for a rechargeable battery are provided to reduce the cost for a rechargeable battery and a protection circuit for a rechargeable battery by not requiring a FET and a posistor for precharging. A protection circuit for a rechargeable battery includes two inner electric terminals(11), two outer electric terminals(21), a first wire, a second wire, and a protection circuit(200). Two inner electric terminals are connected with a bare cell and two outer electric terminals are connected with a charger. The first wire connects one of two inner electric terminals and one of two outer electric terminals corresponding to the inner electric terminal. The second wire connects the other inner electric terminal and the other outer electric terminal. One end of the protection circuit is connected with a cut-off voltage applying unit(210,) and with a precharging voltage applying unit(220) having a pulse generator(225).
Patent KR-20060059937-A (KR)
Inventor: SEO JONG KUK
IPC: B60R21/00
Filed: 2006-05-10
Abstract: 본 발명은 센서를 차량에 설치하여 센서 감지시에만 녹화되어 데이터의 효율성을 높이는데 있고, 전구를 설치하여 야간 또는 어두운 환경에서의 카메라 렌즈 주위에 있는 LED로 녹화시 취약점인 흑백화면을 설정된 시간값 안에 센서가 감지시 점등이 되어 컬러로 녹화할 수 있음으로써 취약한 환경에서도 환경에 구애받지 않고 확실한 식별을 할 수 있게 함이 특징이다. 
       
     센서, 온도센서, 전구, DVR, 점등, 녹화`
Patent KR-20070111276-A (KR)
Title: Medhod for providing music service using musical gene
Inventor: JUNG JAE JUN
IPC: G06F17/00
Filed: 2006-05-17
Abstract: A method for providing a music service using a musical gene are provided to calculate a favorable impression degree to selected music by providing the selected music to a web page visitor. Musical gene information of a first user is extracted by using a predetermined analysis engine(120). A web page related to the first user is provided. The selected music is regenerated on the basis of the musical gene information when a predetermined event of a second user is sensed from the web page. A favorable impression degree to the first user is calculated according to a regenerating time of the selected music.
Patent KR-20070113501-A (KR)
Title: Water-soluble one composition type of paint and varnish for polyolefin plastics having excellent chemical resistance
Inventor: KIM OK
IPC: C09D123/00
Filed: 2006-05-24
Abstract: A water-soluble one component type paint composition for polyolefin-based plastics is provided to improve chemical resistance of plastic interior materials for automobiles. A water-soluble one component type paint composition for polyolefin-based plastics having excellent chemical resistance comprises 30-50wt% of a chlorinated polyolefin-based water-soluble emulsion resin, 0-10wt% of an acrylic-styrene copolymer water-soluble emulsion resin containing an epoxy-based cross-linking agent having 2 epoxy groups, 10-20wt% of a propylene glycol-based solvent, 25-35wt% of ion-exchanged water, and 0.1-3wt% of silane.
Patent KR-20070118861-A (KR)
Title: Feedforward a use short time delay interference cancellation wireless repeater apparatus and control method there of
Inventor: LEE SEUNG YEOB
IPC: H04B7/14
Filed: 2006-06-13
Abstract: A short time delay interference noise cancellation wireless repeater using a feedback technique and a controlling method thereof are provided to cancel various unwanted interference noise signals generated in a wireless space, thereby improving functions of the wireless repeater, consequently speech quality of a wireless communication subscriber is improved. A transceiving unit processes signals received through transceiving antennas(201,208) by using a direction conversion method, and filters/amplifies particular frequency bands of the signals, then transmits the signals to a wireless space. An interference noise cancellation unit(209) detects signals at the first spot and the third spot, extracts unwanted interference noise signals by comparing/analyzing the detected signals, and generates phase-reversed interference noise signals with the same frequency, amplitude coefficient, delay time coefficient as the extracted signals, then transmits the phase-reversed interference noise signals to the second spot to offset the unwanted interference noise signals.
Patent KR-20070120395-A (KR)
Title: Image projection apparatus
Inventor: WOO SUNG JE
IPC: G03B21/16
Filed: 2006-06-19
Abstract: An apparatus for projecting an image is provided to reduce material required for manufacturing the apparatus by simplifying a structure for cooling a radiating part. An apparatus for projecting an image comprises a body casing, a radiating part(200) and a cooling duct(400). The body casing includes an inlet formed at a lower side of the body casing and an outlet spaced apart from the inlet. The radiating part is provided in the body casing and generates heat. The cooling duct has a passage which is coupled to the body casing to pass through the inlet and the outlet and guides cooling air, which is introduced through the inlet, toward the radiating part. The radiating part is disposed in the passage. A cooling fan(450) is received in the cooling duct. The outlet is formed at a side of the body casing.
Patent KR-20060080911-A (KR)
Inventor: JEON WON YOUNG
IPC: B65D51/18
Filed: 2006-06-20
Abstract: 본 발명은 원터치식으로 뚜껑을 개폐할 수 있도록 하면서 병이나 용기의 팽창에 의해 뚜껑이 임의로 분리되는 것을 방지할 수 있도록 된 새로운 구조의 뚜껑에 관한 것으로서, 
     일면에 개구부(112)가 형성된 통상의 뚜껑(100)에 있어서, 
     상기 뚜껑(100)의 내벽면에 둘레부를 따라 일정 간격으로 이격되게 적어도 한 쌍 이상의 안착부(120)와, 
     상기 각각의 안착부(120)에 삽입되어 일단부가 뚜껑(110) 내측으로 출몰 가능하게 장착된 걸림체(150)와, 
     상기 뚜껑(110)의 외측에서 안착부(120)로 관통결합되어 작동에 따라 상기 걸림체(150)를 뚜껑(100)의 내측방향으로 가압하여 출몰된 상태로 유지되도록 하거나 가압 해제하여 안착부(120)내로 수납될 수 있도록 하는 록킹수단(180)으로 구성된 것을 특징으로 하는 뚜껑을 제공한다. 
       
     뚜껑, 병, 용기, 걸림체, 안착부, 록킹수단
Patent KR-20060134863-A (KR)
Title: Light emitting device using organic electroluminescent element
Inventor: OKABE TAKANORI
IPC: H05B44/00
Filed: 2006-06-22
Abstract: A light emitting device using an organic EL(Electro-Luminescent) element is provided to prevent brightness degradation of the organic EL element by applying a reverse voltage to the organic EL element. A light emitting device using an organic EL element includes a constant current source(12), a first organic EL element(16), switches(14,20), and a voltage difference generator. The first organic EL element is connected to the constant current source. The switches change the direction of a voltage, which is applied to the first organic EL element from the constant current source. The voltage difference generator is parallel-coupled with the first organic EL element. When the reverse voltage is applied on the first organic EL element to turn off the first organic EL element, a current from the constant current source flows through the voltage difference generator, which generates the voltage difference.
Patent KR-20060134866-A (KR)
Title: Acoustic resonator performance enhancement using alternating frame structure
Inventor: RUBY RICHARD C
IPC: H01L41/29
Filed: 2006-06-23
Abstract: An acoustic resonator and a method of fabricating the same are provided to change a phase in some reflected waves of signal wavelength in an FBAR(Thin-Film Bulk Acoustic Resonator) membrane by forming alternative regions of different impedance. A first electrode(46) is positioned adjacent to a substrate(42), and has an outer perimeter. A piezoelectric layer is positioned adjacent to the first electrode. A second electrode(50) is positioned adjacent to the piezoelectric layer, and has an outer perimeter. An alternative frame region is formed on either of the first and second electrodes. A depression(44) is formed in the substrate, and has a depression perimeter. An acoustic mirror is formed in the substrate, and the first electrode spans over the acoustic mirror.
Patent KR-20080001772-A (KR)
Title: Sustained release formulations containing metformin or its salt and processes for preparing the same
Inventor: PARK YOUNG JOON
IPC: A61K9/16
Filed: 2006-06-30
Abstract: Sustained release formulations containing metformin or its salts are provided to delay release of metformin effectively, release it in a pH-independent pattern, reduce the total weight of formulations by using a relatively small amount of excipients, and improve tablet compressibility of formulations without further excipients. A process for manufacturing the Sustained release formulations containing metformin or its salts comprises the steps of: (a) mixing 100 parts by weight of metformin or its salt with 2-10 parts by weight of hydroxypropylmethylcellulose having 100-150,000 cps and preparing granules of the mixture by using 1-8 parts by weight of binder; (b) coating the granules with a coating solution containing 5-30 parts by weight of water-insoluble polymer; and (c) mixing the coated granules with 10-50 parts by weight of polyethylene oxide, and preparing tablets with the mixture, wherein the water-insoluble polymer is methacrylic acid copolymer, ethylcellulose, hydroxypropylmethylcellulose phthalate, hydroxypropylmethylcellulose acetate succinate or their mixture.
Patent KR-20080004142-A (KR)
Title: The primary stage rainwater management and simplicity a prompt system for small waterworks
Inventor: KIM SAM SIK
IPC: C02F1/00
Filed: 2006-07-04
Abstract: An apparatus for treating initial rainwater and filtering water of waterworks simply and rapidly is provided to purify stably the initial rainwater into clean water by sequentially flowing initial rainwater through a rainwater pipe, a settler and first and second filtration tanks in which filtering sand and gravel are filled, thereby filtering the rainwater. An apparatus for treating initial rainwater and filtering water of waterworks simply and rapidly comprises: a rectangular or circular settler(3) for removing alien substances such as leaves from rainwater; a filtering mesh(4) for secondly filtering the rainwater; a first circular filtering device(38) in which a first screen(14), large gravel(germanium stone)(15), a second screen(16), small gravel(germanium stone)(17), and a third screen(18) are formed up to down; a second circular filtering device(39) in which a fourth screen(20), coarse sand(or activated carbon granules)(19), a fifth screen(22), sand(or bio sand)(21), and a sixth screen(24) are formed down to up; a settling valve(7) installed on a connecting pipe between the settler and the first filtering device and closed to flow rainwater(raw water) into the first filtering device; first and second wastewater sludge pipes(26,34) which are installed on one side of a lower part of the first and second filtering devices, and on which first and second wastewater sludge valves(27,35) are installed; a filtration pipe(30) which is installed between lower parts of the first and second filtering devices, and on which a filtration valve(31) is installed; an overdrain pipe(32) which is installed between upper parts of the first and second filtering devices, and on which an overdrain valve(33) is installed; and a purified water pipe(36) which is installed on the other side of the upper part of the second filtering device, and on which a purified water valve(37) is installed, wherein inner parts of the filtering devices are cleaned by opening a backwashing valve(8), pulling out a stopper(10), joining a flexible hose(9) to a backwashing pipe(40) by means of a clip(11), opening a cover(13) for the first filtering device, and injecting the hose into the first filtering device.
Patent KR-20070039394-A (KR)
Inventor: CHANG CHIH HSIEN
IPC: H04N7/24
Filed: 2006-07-05
Abstract: 합성 서브밴드 필터장치가 제공된다. 상기 장치는 512개의 윈도 계수들을 제공하는 스펙에 따라 32개의 서브밴드 샘플링 신호들을 각각 포함하는 18세트의 신호들을 처리하기 위해 이용된다. 상기 장치는 18세트의 신호들을 순차적으로 처리하기 위한 프로세서를 구비한다. 상기 프로세서는 컨버팅 모듈 및 생성 모듈을 더 구비한다.  상기 컨버팅 모듈은 처리되는 신호들 세트의 32개의 서브밴드 샘플링 신호들을 32-포인트 이산 코사인 변환 (DCT)을 이용하여 32개의 컨버팅된 벡터들로 컨버팅하고, 32개의 컨버팅된 벡터들을 선입, 선출 큐로 512개의 디폴트 벡터들에 기록하기 위해 이용된다. 상기 생성 모듈은 이 발명에서 제안된 한 세트의 합성 식에 따라 처리되는 신호들의 세트에 대하여, 32개의 펄스 코드 변조 (PCM) 신호들을 생성하기 위해 이용된다. 
       
     합성 서브밴드 필터, 32개의 서브밴드 샘플링 신호, 컨버팅 모듈, 생성 모듈, 32-포인트 이산 코사인 변환, 32개의 펄스 코드 변조 신호
Patent KR-20080004920-A (KR)
Title: An improved ticket-based eap-aka protocol for interworking of umts, wlan, and wibro
Inventor: OH HEE KUCK
IPC: H04L9/30
Filed: 2006-07-07
Abstract: An improved ticket-based EAP-AKA(Extensible Authentication Protocol-Authentication and Key Agreement) protocol for interworking with UMTS(Universal Mobile Telecommunications System), WLAN(Wireless Local Area Network), AND WIBRO(WIreless BROadband) is provided to reduce SN(Serving Network)-required storage and band width waste between SN and HN(Home Network) by using ticket-key method. An improved ticket-based EAP-AKA protocol for interworking with UMTS(Universal Mobile Telecommunications System), WLAN(Wireless Local Area Network), AND WIBRO(WIreless BROadband) includes an enhanced AKA protocol. The enhanced AKA protocol is applied to PEAP(Protected EAP) to propose safer and more efficient ticket-based protocol than existing EAP-AKA for guaranteeing mutual authentication between SN(Serving Network)- and HN(Home Network), protecting permanent identity of a user, and having efficient calculating amount and storage.
Patent KR-20060090650-A (KR)
Inventor: HONG KYUNG HEE
IPC: H04N13/02
Filed: 2006-07-28
Abstract: 본 발명은 입체영상 촬영장치에 관한 것으로서, 카메라 렌즈 앞에 부착되어 동시에 양 눈으로 보는 영상을 좌우 교대로 통과시켜 카메라를 통하여 녹화 테잎이나 기타 화상저장장치에 순차적으로 저장함으로써 재생할 때 눈의 잔상효과에 의해 두 개의 영상이 조합되어 보이도록 함으로써 2대의 카메라를 통해 촬영한 효과로 입체영상을 촬영할 수 있도록 할 뿐만 아니라 케프러형 단일 또는 이중 무초점계를 사용하면서 릴레이 렌즈계를 사용하여 차폐 효과(vignetting effect)를 최소화하며 반사경을 사용하여 광로정을 접어 구성함으로써 카메라에 설치하기 용이하며 시야각을 무제한 확대할 수 있어 카메라에서 촬영할 수 있는 모든 시야각에서 촬영할 수 있는 이점이 있다.  
       
     입체영상, 카메라, 광학계, 시야각, 촬영장치, 단일 무초점계, 이중 무초점계
Patent KR-20070021969-A (KR)
IPC: A61B6/00
Filed: 2006-08-18
Abstract: 본 발명은 프로젝션 이미지의 그룹으로부터 제작된 샤프 파노라마 이미지를 결정하기 위한 방법 및 시스템에 관한 것이다. 특히, 본 발명은 치아와 턱 영역의 파노라마 X선 이미지의 구조를 정의하는 것과 관련된다. 프로젝션 이미지의 그룹으로부터 생성될 파노라마 이미지의 구조는, 적어도 선택 S와 t(S)에 대응하는 연산된 파노라마 이미지에서의 저주파 변화의 패널티 함수 F3(S,t)인 패널티 함수 F(S,t)를 이용하여, 적어도 2개의 중요 파라미터, 즉 샤프 레이어의 중앙 표면 S와 샤프 레이어의 두께 t(s)의 파라미터에 의해 결정된다. F3(S,t)를 연산한 후에는, 최상의 중앙 표면과 두께 함수(다시 말해, 파노라마 이미지의 가장 선명한 레이어)가 파라미터 공간에 걸쳐서 패널티 함수 F(S,t)를 최소화함으로써 얻어진다.
Patent KR-20080017523-A (KR)
Title: Vacuum chuck of a vacuum intermittent packing and cylinder
Inventor: YANG YONG CHAN
IPC: F16B47/00
Filed: 2006-08-21
Abstract: A packing and a cylinder for controlling the vacuum of a vacuum chuck are provided to pick up objects regardless of the shape and size by installing a plurality of cylinders in a vacuum chuck body and adding a packing with a piston and a guide to the cylinders. A packing for controlling the vacuum of a vacuum chuck comprises a guide(33), a packing upper recess(34), an edge(39), a groove(38), a cylindrical piston(32), and a piston inner space(36). Vacuum and air pressure passes through the guide. The packing upper recess is formed at the center of the guide. The edge is formed at the periphery of the guide. The groove is formed at the bottom of the guide where a piston outer surface(35) extends toward the guide. The piston inner space is formed at the center of the piston. A cylinder includes a guide recess, a cylinder space, a cylinder upper surface, a cylinder lower surface, and a hole. The edge of the packing is inserted into the guide recess. The cylinder space is wider than the outer surface of the piston. The hole is longer than the piston. The diameter of the hole is equal to the piston inner space.
Patent KR-20080018390-A (KR)
Title: Linear motor having air knife and chip mounter having the same
Inventor: PARK WON MYUNG
IPC: H02P9/00
Filed: 2006-08-24
Abstract: A linear motor having an air knife and a chip mounter having the same are provided to perform precise control by including the air knife to inject cool air between a stator and a mover. A stator(110) comprises a number of permanent magnets(116) arranged along one direction. A mover(120) comprises a plate(122), a core(124) and a coil(126). The plate is arranged at the opposite side of the stator, and the core is arranged on one plane of the plate, and the coil is wound around the core having air gap with the permanent magnets. An air knife(140) is arranged on one plane of one side of the plate in one side or both sides of the coil, and supplies a cool air to the air gap.
Patent KR-20080019765-A (KR)
Title: A single body line construction of curve lighting
Inventor: HONG SEOK GI
IPC: F21S2/00
Filed: 2006-08-29
Abstract: A curve lighting device with a single body line structure is provided to reduce molding cost and work time by expressing a curve without separate molding work of a substrate unit. A curve lighting device includes a substrate unit(20), a lighting unit(30), a power input/output unit, a cutting guide line(50), a bending force adjusting member(10), and a receiving groove(11). The substrate unit is molded in a plate type. The lighting unit is installed in a predetermined position of the substrate unit. The power input/output unit is formed at both sides of the substrate unit. The cutting guide line allows a user to recognize a safe cut part when cutting the substrate unit. The bending force adjusting unit prevents excessive bending force from being transmitted to the substrate unit when curving the substrate unit. The receiving groove facilitates attachment between the substrate unit and the bending force adjusting member.
Patent KR-20080020756-A (KR)
Title: Bridge structure for leisure glasses
Inventor: PARK SOO AN
IPC: G02C9/00
Filed: 2006-09-01
Abstract: A bridge structure for leisure glasses is provided to increase a viewing angle by attaching a correction lens on an inner surface of an external lens using a bridge. A bridge structure for leisure glasses includes a bridge(20) and a correction lens. The bridge is integrated with an inner surface of an external lens. A nose pad is formed at a center of the external lens. The correction lens is processed to fit to eyesight of a user. The correction lens is fixed on a concave groove(13), which is formed outside the bridge, by using an adhesive member. The bridge is integrated inside the external lens, such as sun-glasses, sports glasses, and sky goggles. An inner portion of the bridge is long, while an outer portion of the bridge is short.
Patent KR-20080022415-A (KR)
Title: Repair apparatus and method for liquid crystal display
Inventor: YU JUN YOUNG
IPC: G02F1/13
Filed: 2006-09-06
Abstract: A repair apparatus and a method for a liquid crystal display device are provided to change a progressive direction of laser light projected from an optical part through micro mirror arrays without moving lens of an optical system for repairing all defects occurring on a substrate and shortening the repair work time. A repair apparatus for a liquid crystal display device comprises an optical part(110), a movable stage(120), micro mirror arrays(130), and a micro mirror controller(140). The optical part projects laser beam. The movable stage, installed with a substrate(150), is moved to X and Y axis directions. The micro mirror arrays change a progressive direction of the laser beam and project the laser beam on the substrate. The micro mirror controller controls a rotary angle of the micro mirror arrays. The micro mirror arrays include multiple micro mirrors(M1~Mn) and multiple rods. A stage micro mirror controller controls the motion of the movable stage. Thereby, all defects occurring on the substrate are repaired.
Patent KR-20070032920-A (KR)
Title: 신선한 메밀 국수 (냉면)의 제조방법 및 관련 장치
IPC: A23L7/10
Filed: 2006-09-19
Abstract: 본 발명은 신선한 메밀 국수를 제조하는 방법 및 장치 (10)에 관한 것이다.  상기 장치 (10)는 원하는 습도율을 갖는 반죽을 얻기 위해 복수의 건조 재료를 물 및/또는 증기와 혼합하는 혼합부 (11), 원하는 형태의 국수를 제조하기 위하여 상기 반죽을 압출 부재 (20, 21) 안으로 누르고 인장하는 압출부 (12), 상기 국수를 크기에 맞춰 자르는 절단부 (13), 상기 국수를 냉각하는 냉각부 (15) 및 상기 국수를 포장하는 포장부 (16)를 적어도 포함한다.  상기 압출 부재는 압출 스크루 (21)를 포함하며, 상기 압출 스크루는 적어도 일부분에 원뿔형 윤곽을 가져서 상기 반죽을 인장하기 전에 적어도 부하/휴식 1주기를 유도하고, 압출 스크루 (21)가 회전되는 동안 상기 반죽에 약 50~300 sec -1  의 전단 속도를 발생시킨다.
Patent KR-20080030131-A (KR)
Title: Boost pressure signal alternative method of diesel engine
Inventor: JUNG JAE YOON
IPC: F02D29/02
Filed: 2006-09-29
Abstract: A method for substituting for a boost pressure signal of a diesel engine is provided to simplify the structure of a cylinder block by integrally mounting a combustion pressure sensor inside a preheating plug. A method for substituting for a boost pressure signal of a diesel engine includes the steps of: determining whether a combustion pressure sensor signal detected by a combustion pressure sensor represents a pressure less than a reference pressure(S1); determining whether the combustion pressure sensor signal has a positive or negative slope(S2,S4); determining as a compression stroke if the pressure sensor signal has a positive slope(S3); determining as an expansion stroke If the combustion pressure sensor signal has a negative slope(S5); determining whether the combustion pressure sensor signal has a negative slope in the previous stroke, if the combustion pressure sensor signal has neither a positive slope nor a negative slope(S6); determining as an exhaust stroke if the combustion pressure sensor signal has a negative slope in the previous stroke(S7); and determining as an intake stroke if the combustion pressure sensor signal does not have a negative slope in the previous stroke and substituting the combustion pressure sensor signal for a boost pressure sensor signal of VGT(Variable Geometry Turbocharger) control logic.
Patent KR-20080032404-A (KR)
Title: Mobile phone slide construction of slide type
Inventor: HER JAE YOUL
IPC: H04B1/38
Filed: 2006-10-09
Abstract: A slide driving device of a slide type mobile phone is provided to reduce a unit cost by reducing an assembling process of a slide assembly, and facilitate assembling by improving working efficiency. An upper plate(300) includes at least one out guide rail unit(32) formed at one side thereof. A lower plate(700) includes at least one in guide rail unit(71) formed at one side thereof and is combined with the out guide rail unit. A thin film streamlined wavy spring(500) is fixed to one side of the upper plate and one side of the lower plate, and slidably opens one of the upper plate and the lower plate. One of the upper plate and the lower plate is slidably moved by the out guide rail unit and the in guide rail unit. A fixed pin(33) is formed as a cylindrical protrusion at the center of a lower surface of the upper plate and brakes a slidable movement.