baber/WOPTO huggingface dataset:
Patent KR-20010013715-A (KR)
Title: Method and Device for Generating, Merging and Updating of Destination Tracking Data
IPC: G08G1/0968
Filed: 1998-06-12
Abstract: A method and device for generating, merging and updating data for use in a destination tracking system which comprises, among others, the following steps: Generation of data by mobile units (vehicles) to model reality concerning route(s) and traffic, and storing this data for further use. A highly up-to-date and extremely reliable database is built-up in a simple and efficient way by merging data from many units. This database makes it possible to answer a number of complex problems, for example, about the passable route network and realizable travel times. On input of an origin and a destination node together with the intended travel time, destination tracking data is calculated from the stored data. Since the origin-destination relationships of the motions carried out by the mobile units in dependency of all conceivable parameters are known, the destination tracking recommendations for each individual participant can be given such that the sum of the times of movement of all participants is minimized.
Patent KR-20010068574-A (KR)
Title: Soft magnetic material of FeZrBAg system and a method for fabricating a soft magnetic thin film
Inventor: KIM HYEON SIK
IPC: C23C14/14
Filed: 2000-01-07
Abstract: PURPOSE: A preparation method of fe-zr-b-ag soft magnetic material and thin film are provided to achieve a magnetic core material having characteristic of a high magnetic permeability, low loss and a high saturation magnetization in MHz scale high frequency. CONSTITUTION: The material is prepared by the steps of vapor depositing Ag to the Fe-Zr-B alloy composition, treating resultant thin film with heat and cooling the FeZrBAg thin film to room temperature.
Patent KR-20000030156-A (KR)
Inventor: YU SEOK CHEON
IPC: G06Q30/02
Filed: 2000-01-21
Abstract: PURPOSE: An internet game method using mileage and mileage circulating system are provided to occur a gain of a company by providing an opportunity for obtaining a bonus corresponding to a mileage to a client. CONSTITUTION: A consumer obtains and uses a mileage. A mileage providing company provides and accumulates a mileage according to a buying of a goods and a using of a service, and provides a bonus when the accumulated mileage is more than a uniform point or can to be used as a cyber money. A mileage bank has a game contents for providing a mileage point obtaining and losing game between the consumer and the mileage providing company, and transfers mileage information of each mileage providing company.
Patent KR-20010074409-A (KR)
Title: Method to allocate dedicated channel for transmitting packet in apparatus to perform function of CDMA media access control layer
Inventor: LEE JAE YONG
IPC: H04W72/04
Filed: 2000-01-25
Abstract: PURPOSE: A method for allocating a designation channel for a packet transmission of a CDMA(Code Division Multiple Access) MAC(media access control) layer processing unit is provided to hold a quick packet processing speed irrespective of the increase of a packet generation quantity by allocating the designation channel to each connection directivity packet when transmitting packet data between an MS(Mobile Station) and a BS(Base Station). CONSTITUTION: If a packet is generated, a MAC layer processing unit of an MS is transitted into a stop state, checks a service option of the generated packet, and requests a designation control channel allocation to a MAC layer processing unit of a BS when the generated packet is a connection directivity packet as a result of the check(ST11). If a designation control channel is allocated in a state in which a stop state timer is not stopped, the MAC layer processing unit of the MS is transitted into a control hold state and requests a designation traffic channel allocation to the MAC layer processing unit of the BS(ST13). If a designation traffic channel is allocated in a state in which a control hold state timer is not stopped, the MAC layer processing unit of the MS is transitted into an active state and transmits the packet through the allocated designation traffic channel(ST14,ST15).
Patent KR-20010076096-A (KR)
Inventor: KIM JAE SEONG
IPC: G09G3/294
Filed: 2000-01-25
Abstract: PURPOSE: A plasma display panel and a method of driving the plasma display panel are provided, which causes long-distance discharge between discharge sustain electrodes while restricting an increase in discharge initiation voltage during sustain discharge using trigger electrodes formed at the center of a discharge cell, to improve luminous efficiency and luminance. CONSTITUTION: A plasma display panel includes the first and second trigger electrodes(Ty,Tz) and the first and second discharge sustain electrodes(Sy,Sz). The first and second trigger electrodes are formed on the center of the same substrate, having a narrow distance between the electrodes, and initiates sustain discharge according to a low-voltage AC pulse that is alternately applied to the two trigger electrodes. The first and second discharge sustain electrodes are formed at the boundary of a discharge cell, being separated from the trigger electrodes, and maintain the sustain discharge according to a high-voltage AC pulse that is alternately applied to the discharge sustain electrodes.
Patent KR-20010081146-A (KR)
Title: The clothes for massage and finger-pressure therapy
Inventor: JEON BYEONG HAK
IPC: A61H39/04
Filed: 2000-02-02
Abstract: PURPOSE: The clothes for massage and acupressure are provided to have massage and acupressure effects on a body by pressing each part of the body with projections. CONSTITUTION: The clothes for massage and acupressure include pressing projections(1). The pressing projections(1) are composed of inserting holes(2) of inserting objects, inserting cavities(3), pressing parts(4) and a plate(5). The pressing projections(1) are formed as the button, zipper or velcro type and are made of synthetic resin silicon. The pressing parts(4) support the effect of acupressure. The magnet or jade is stuck in the inserting cavities(3). The massage cream is able to be inserted into the inserting cavities(3) for improving the efficiency of massage.
Patent KR-20010077498-A (KR)
Inventor: CHANG SOO KOB
IPC: E04H13/00
Filed: 2000-02-03
Abstract: PURPOSE: A cinerary unit and a cinerary tower using the same are provided to manufacture the cinerary tower with small stone materials and reduce the number of processes. CONSTITUTION: A cinerary tower includes: a ground stone(16); at least one or more cinerary units(1) for laying ashes each including a lattice body(5) assembled with long partition plates(3) and short partition plates(4), many pillars(7) connected to the ends of the short partition plates, corner plates standing at both free ends of the long partition plates, door members(8) inserted between both sides of the pillars adjacent to each other to open and shut the spaces between the pillars, and many isolated rooms(2) installed between the partition plates for laying ashes; and at least one or more covers(17) put on the top of the cinerary units, wherein the cinerary units and the covers are put in an accumulation method.
Patent KR-20010077623-A (KR)
Title: Fabrication of the Green Body Consisting of Silicon Carbide Mixed with Carbon Powders Using Gel-casting Method
Inventor: KWAK HAE
IPC: C04B35/573
Filed: 2000-02-03
Abstract: PURPOSE: Provided is a preparation method of SiC/C mold by gel casting which is characterized by adding five kinds of additives to SiC/C powder step by step. The resultant SiC/C mold has high forming density and forming strength so that it shows large and complicate shapes. CONSTITUTION: The preparation method for SiC/C mold is as follows: preparing a SiC/C slurry by adding 0.5-1.0wt.% of naphthalene sulfonic formaldehyde condensate(T-N) as a dispersant and water to SiC/C powder composed of 70-90wt.% of SiC and 10-30wt.% of C, and ball-mixing for 1hr.; adding a binder, 12-18wt.% of acrylamide (AM, C2H3CONH2), and cross-linker, 0.5-0.8wt.% of N,N-methylene bisacrylamide (MBAM, (C2H3CONH)2CH2), and ball-mixing for 24hrs.; adding a catalyst, 1.0-6.0mL/L of tertramethylethylenediamine(TEMED), and ball-mixing for 30min.; adding a reaction initiator, 0.2g/L of ammonium persulfate(APS, (NH4)2S2O8), and mixing for 5min.; removing foams; molding and polymerizing; drying.
Patent KR-20010014597-A (KR)
Inventor: NOMURA HIDEFUMI
IPC: A47L19/00
Filed: 2000-03-16
Abstract: PURPOSE: To achieve ease of handling with a higher cleaning performance by a method wherein a hot air generation means is built in, a dish drying chamber is made up of a body having a drain hole in the top surface thereof and a lid body and a water receiving pan is detachably housed to place a dish cage thereon. CONSTITUTION: A hot air generation means comprising a heater and a blower is built in behind a body 1 to form a hot air generation means housing chamber. A lid body 6 comprising a plurality of lid pieces 7 freely openable is provided on the top surface of the body 1 to form a dish drying chamber 8 and a drain hole 9 is formed in the bottom surface thereof. A water receiving pan 10 is detachably disposed below the drain hole. Then, a dish cage 23 and a water receiving plate 16 are housed into the dish drying chamber 8. A small article housing part 11 is formed at a lower part of the body 1 and a small article drying chamber is formed to house a tray 12 for housing a small article such as chopping block free to move in or out. Thus, the dish cage 23 or the like is taken out to be washed by water, thereby facilitating cleaning.
Patent KR-20010094782-A (KR)
Title: The manufacturing method of cement concrete with polymer coating layer
Inventor: CHOI DONG SUN
IPC: B28B1/30
Filed: 2000-04-06
Abstract: PURPOSE: A method for preparing the cement concrete is provided, to improve the waterproofing, the chemical resistance and the seawater resistance by introducing a polymer coating layer into the cement concrete. CONSTITUTION: The method comprises the steps of pasting a polymer paste on the one side of a mold treated with a releasing agent to form a polymer layer(1); spraying a binding material on the polymer layer(1) before the polymer layer is cured, to form a binding material layer(2); pouring cement on the surface to form a cement concrete layer(3); curing the cement concrete layer completely; and taking out the cured one from the mold, wherein the binding material is the sand with the particle size of 1-3 mm and the addition amount is 1.1 times or more based on the amount of the polymer by volume. Preferably the polymer layer(1) comprises 100 parts by weight of a polymer; 20-30 parts by weight of a shrink-proofing agent; 15-25 parts by weight of a filler; and 1-2 parts by weight of a curing agent.
Patent KR-20010095823-A (KR)
Title: Article Formed with Protrusions for Stimulating Finger Tips
Inventor: JUN SEUNG GIL
IPC: G06F3/02
Filed: 2000-04-12
Abstract: PURPOSE: A product having protrusions for stimulating acupuncture spot of finger and palm is provided to stimulate an acupuncture spot of finger or palm into refreshment by forming protrusions on a surface of product which finger or palm touch. CONSTITUTION: A plurality of protrusions which have a diameter from 0.5 to 2.0 mm and a height from 0.5 to 2.0 mm is formed on a surface of a product to stimulate an acupuncture spot of finger or palm. The product is molded from a resin composite substance. The resin composite substance consists of a jade powder over 100 mesh and a basic resin.
Patent KR-20010096782-A (KR)
Inventor: NOH DAE SEONG
IPC: H04B1/40
Filed: 2000-04-14
Abstract: 본 발명은 이동 통신 기기의 진동 모드에 관한 것으로, 이동 통신 기기의 진동 모터의 구동이 점진적으로 이루어지도록 하기 위한 이동 통신 기기의 진동 모드 제어 방법이 개시된다. 
     본 발명에 따르면 a) 모터의 진동력 Fg에 대응한 전류 ig 값, 상기 전류 ig 값에 기초한 상기 모터의 각속도를 산출하기 위한 비례 상수 K, 가감 전류량 델타 i 및 초기 전류량 i가 설정되는 단계; b) 상기 모터의 진동력 Fg 설정을 사용자에게 요구하는 단계; b) A 또는 B 모드 설정을 사용자에게 요구하는 단계; 및 c) B 모드로 설정될 경우, 상기 초기 전류량 i 값과 상기 가감 전류량 델타 i를 가산하여 상기 가산 결과에 기초한 모터의 구동력 F가 상기 모터의 구동력 Fg와 동일할 때 까지 상기 가감 전류량 델타 i를 지속적으로 가산하여 상기 모터를 구동시키며, A 모드로 설정될 경우, 상기 모터의 진동력 Fg 값에 상응한 전류 ig 값으로 상기 모터를 구동시키는 단계로 이루어져, 이동 통신 기기의 진동 모드시 발생되는 진동력이 점진적으로 가중되어 사용자에게 전달되도록 함에 따라, 진동 모드의 갑작스런 동작으로 인한 사용상의 불쾌감을 제거하는 효과가 있다.
Patent KR-20000053834-A (KR)
Inventor: HAN SANG CHEON
Filed: 2000-04-24
Abstract: PURPOSE: A broadcasting site for B2B is provided for simple and economic bids and trade by providing bid information with use of an Internet broadcasting technique and by a sanction with a legal card. CONSTITUTION: A broadcasting site for B2B is simply composed to make bidding and dealing simply and economically. The broadcasting site uses Internet broadcasting techniques when each bid information is supplied to users. The broadcasting site connects with each financial company to make the businesses pay loans with corporate cards.
Patent KR-20010102726-A (KR)
Inventor: LIM DONG WOOK
Filed: 2000-05-08
Abstract: 본 발명은 카트내에 적재되어 돌출된 물품이 유동되지 않는 안정성을 유지하면서 물품의 보존상태가 양호하여 제품의 품격을 향상시킬 수 있도록 한 카트식 완구세트의 포장 구조에 관한 것으로서, 본 발명은 카트의 적재함 위로 인형등의 전시용 물품을 돌출시켜 제공되는 카트식 완구세트를 포장하는 구조에 있어서, 상기 돌출된 전시용 물품을 수용가능한 하향 개구된 수용부를 갖추며 수용부의 하단 둘레로 플랜지부를 갖춘 투명한 플라스틱재의 블리스터 성형구가 구비되고, 이 블리스터 성형구는 그 수용부에 상기 전시용 물품의 돌출부분을 수용하면서 그 플랜지부를 통하여 상기 카트의 적재함 상면에 안착되며, 하면이 개구된 비닐재의 포장커버를 마련하되, 그 상면부에는 상기 블리스터 성형구의 수용부에 대응하는 삽입구를 형성하여서, 이 삽입구를 상기 블리스터 성형구의 수용부에 씌워 삽입구 둘레가 블리스터 성형구의 플랜지부를 적재함 상면으로 누르도록 한 구조로 이루어진다. 
     이에, 종래기술에서는 포장 커버에 의하여 전시용 물품이 눌려지는 등의 문제가 발생하였으나, 본 발명에서는 블리스터 성형구에 의하여 전시용 물품을 손상 없이 보호할 수 있음은 물론, 각 제품별로 균일한 포장상태를 얻을 수 있고, 유통과정에서 유동이 방지되어 처음의 포장상태를 그대로 유지할 수도 있으며, 포장커버의 일그러짐이 적은 등 포장상태가 양호하여 제품의 품격을 향상시킬 수 있다.
Patent KR-20010102769-A (KR)
Inventor: JUNG GI O
Filed: 2000-05-08
Abstract: 본 발명은 IMT-2000 전송시스템에서 프로파일 서비스 제공방법 및 장치에 관한 것으로 IMT-2000무선전송망에 프로파일 서비스 시스템 서버를 구축하여, IMT-2000 가입자의 프로파일 요구사항을 저장하고, 프로파일 정보를 관련 데이터베이스로부터 가져오고 그리고 IMT-2000 가입자에게 프로파일 정보를 제공함으로서 자신의 신분증을 소비하지 않아도 시간과 장소에 구애 없이 용이하게 자신의 신분을 증명할 수 있다.
Patent KR-20010103886-A (KR)
Inventor: KIM JOO HO
Filed: 2000-05-09
Abstract: 여러 종류의 항원(혹은 항체)을 96-공 플레이트의 각 공 속에서 서로 다른 위치에 흡착/결합시키는 새로운 코팅 기술임. 본 발명의 새로운 코팅 기술은 공의 바닥을 수평으로 분할하여 다른 종류의 항원(혹은 항체)을 따로따로 코팅하는 수평분할 코팅방식, 공의 벽면을 따라 수직으로 분할하여 항원(혹은 항체)을 코팅하는 수직분할 코팅방식으로 개발하였음.
Patent KR-20010103978-A (KR)
Inventor: BAE MYEONG GWANG
Filed: 2000-05-12
Abstract: 본 발명은 커패시터의 제조 방법에 관한 것으로, 반도체 기판 상에 제 1 희생절연막을 형성한다. 제 1 희생절연막을 패터닝하여 반도체 기판의 소정 영역을 노출시키는 스토리지 노드 홀을 형성한다. 스토리지 노드 홀이 형성된 결과물 전면에 제 1 도전물질막 및 제 2 희생절연막을 형성한 후 에치백하여 실린더형의 제 1 스토리지 노드를 형성한다. 이때, 제 1 스토리지 노드의 내측벽에는 제 2 희생절연막이 남고 스토리지 노드 홀의 바닥은 노출된다. 제 1 스토리지 노드가 형성된 결과물 전면에 제 2 도전물질막을 형성한다. 제 2 도전물질막을 에치백하여 제 2 스토리지 노드를 형성한다. 그러면, 실린더형의 제 1 스토리지 노드 내부에 제 2 스토리지 노드가 형성된다. 따라서, 스토리지 노드의 표면적을 증가시킬 수 있다.
Patent KR-20010020901-A (KR)
Title: Image forming apparatus
Inventor: SAKAMOTO KOJI
IPC: G03G15/32
Filed: 2000-05-25
Abstract: PURPOSE: Disclosed is an image generator with inconspicuous granularity which has image carrier and processor, latent image generator, developer, transfer device with primary and secondary parts. CONSTITUTION: The image generator has an image carrier part(1a), an image processor, a latent image generator, a developer(4) and a transfer device(5). The diameter of a pixel toner image of each pixel with toner applied on the image carrier part lies in the range from 20 to 50 microns and the transfer device has primary and secondary transfer parts.
Patent KR-20000063241-A (KR)
Inventor: AHN SANG JIN
IPC: B23Q1/00
Filed: 2000-06-01
Abstract: PURPOSE: A right and left symmetric machining center is provided to simultaneously machine a workpiece forming right and left symmetry as right and left symmetric shape. CONSTITUTION: A machining center including a body assembly formed on a supporting body(100); a bed(200) formed in the body assembly, moving toward and backward following guide rails(320) formed on the body assembly and having a machining workpiece positioned on the upper plane; a column(300) formed at both planes as a case shape placed up side down and having the guide rail in the front of upper plane; an up-and-down mobile unit(400) moving up and down by being guided by the guide rail and having cross rails(410) formed in the front; and a right-and-left mobile unit(500) formed in the front of the up-and- down mobile unit and moving right and left, wherein the right-and-left mobile unit includes a ball screw(310) for symmetric transfer formed in the front of the up-and-down mobile unit, and having a coupling(511) on the center and symmetric right and left screws centering on the coupling; a left mobile unit(520) combined with the left based on the coupling and moving right and left following the cross rail by the rotation of the ball screw for symmetric transfer; a right mobile unit(530) combined with the right based on the coupling and moving right and left symmetric to the left mobile unit by the rotation of the ball screw for symmetric transfer; and a machining head(540) respectively formed in the left mobile unit and the right mobile unit for machining the workpiece.
Patent KR-20010110574-A (KR)
Inventor: LEE JANG WOO
Filed: 2000-06-07
Abstract: 본 발명은 무선통신단말기를 이용한 대고객 메시지 통지방법에 관한 것으로서, 보다 상세하게는 고객관리 업무처리 과정 또는 결과를 고객에게 적극적으로 통지함으로써 고객 서비스를 개선하고 내부업무의 부하를 줄일 수 있는 대고객 통지 서비스를 제공하는 방법에 관한 것이다. 
     본 발명에 따르면, 고객사로부터 고객에게 전달할 메시지를 수신하는 단계; 수신된 상기 메시지 내용을 검증하는 단계; 상기 수신된 메시지의 크기를 확인하여 전송 비용을 계산하는 단계; 고객이 가입한 각각의 통신사에 적합한 형식으로 메시지를 변환하는 단계; 상기 변환된 메시지가 각각의 통신사에서 고객의 무선통신단말기로 전송되는 단계; 및 전송한 메시지 수신 결과를 확인하여 전송 결과 및 상기 계산된 전송 비용(정산 데이터)을 고객사로 통보하는 단계를 포함하는 것을 특징으로 하는 무선통신단말기를 이용한 대고객 메시지 통지방법이 제공된다.
Patent KR-20000054539-A (KR)
Title: One stop junk car processing device and the method therefore
Inventor: PARK SUN HYEON
IPC: G06Q50/30
Filed: 2000-06-10
Abstract: PURPOSE: A method for scraping an auto is provided for an auto wrecker to tow/dismantle the auto with expunging with a vehicle registration office, by agency of the auto expunction with an e-signature via the Internet, and for a client to monitor a full procedure of the auto expunction and to print each step of the procedure. CONSTITUTION: A method for scraping an auto comprises the steps of: accessing to a auto scraping site via the Internet; recognizing to release seizure and setting of the auto; requesting a vehicle scraping office to scrape the auto; towing the auto; issuing a auto acception bill; paying an auto scraping charge online; registering expunction of the auto and identifying the registration.
Patent KR-20020003632-A (KR)
Title: driving method of LED display
Inventor: BOK IK SEONG
IPC: G09G3/20
Filed: 2000-06-22
Abstract: PURPOSE: A method for driving a LED display is provided to reduce capacity of a transformer by operating continuously two LEDs to reduce the number of LED mounted in each segment. CONSTITUTION: An LED(3a) of the third segment(3) is connected with an input terminal(8). An LED(3d) of the segment(3) is connected with an input terminal(9). An end portion of a LED(4a) of the fourth segment(4) is connected with the input terminal(8). An LED(4d) of the fourth segment(4) is connected with the input terminal(9). The LED(3d) of the third segment(3) and the LED(4d) of the fourth segment(4) emit continuously light. Only one of LED(3d) of the third segment(3) and the LED(4d) of the fourth segment(4) is used when the third segment(3) and the fourth segment(4) emit the light. Accordingly, the capacity of a transformer can be reduced.
Patent KR-20010000147-A (KR)
Inventor: PARK MI RAN
Filed: 2000-06-30
Abstract: PURPOSE: A customized education system is provided to offer an education environment based on a user's education level analyzed by using an online diagnosis function. CONSTITUTION: A customized education system comprises steps of a diagnosis database(105), a member management database(106), an education database(107), an information market database(110), an education resource database(111) and a payment system. The diagnosis database(105) makes a diagnosis of an education purpose, an interest field, and an information retrieval capability and displays the diagnosis result in a set form. The member management database(106) offers an information on an education progress, an education product, an education result, or a personal education level. The education database(107) repeatedly educates weak parts for members, and provides optimal customized education contents. The information market database(110) allows a user to practice an information use. The information resource database(111) displays resources used in the education.
Patent KR-20020004377-A (KR)
Title: Method of testing the obd-ⅱ condition by using two oxygen sensors on the converter
Inventor: SON GEON SEOK
IPC: G01N31/10
Filed: 2000-07-05
Abstract: PURPOSE: A deciding method of satisfaction of exhaust gas limit value of a vehicle using an oxygen sensor is provided to decide the satisfaction of exhaust gas limit in OBD-II(On Board Diagnosis) according to the quantity of sucked gas for regulating the active degree of a catalyst changed by various conditions by measuring the OSC(Oxygen Storage Capacity) of a catalyst in a converter. CONSTITUTION: An ECU(Electronic Control Unit) measures the quantity of air of front and rear oxygen sensors according to the initial suction quantity in cold starting. The initial suction quantity influences activation of a catalyst and decides the most discharge quantity of noxious material in exhaust gas. The ECU accumulates the suction quantity(Qair) of air blown to a converter through a manifold and decides if the accumulated suction quantity is higher than set quantity(Qset)(S10-S12). If so, the ECU detects the difference in oxygen value measured through the front and rear oxygen sensors during specific time(ts)(S14). If the accumulated quantity is lower than the set quantity, the ECU continues to accumulate the quantity of air. The measured difference({£Q2|f-£Q2|r}ts) is compared with set reference data({£Q2|f-£Q2|r}set)(S16). If the measured difference is lower than the set reference data, the ECU turns off an MIL(Malfunction Indicating Light) to inform a user of no abnormality in the current exhaust gas limit value of a converter. Otherwise, the ECU turns on the MIL(S18-S20). The ECU estimates the activation characteristics of a catalyst objectively according to the accumulated quantity influencing the activation of a catalyst.
Patent KR-20020009132-A (KR)
Title: Head block for sewing machine
Inventor: LEE WON HYUNG
IPC: D05C11/04
Filed: 2000-07-24
Abstract: PURPOSE: A head block for an embroidering machine is provided, which is characterized by decreasing error ratio by uniting a transferring part and a rail into one, embroidering accurate pattern, lengthening life span by decreasing frictional force of rolling contact parts with balls and increasing reliability. CONSTITUTION: The head block for the embroidering machine is comprised of: (a transferring part) fixing bolt holes(11) which are formed on both ends of a fixing piece, fixing a needle bar; the rails(12) formed on the upper part and the lower part of the middle back face; a slide groove(13) formed inside the rail(12); fixing pins(14) on both ends of the slide grooves(13); (a bearing part) many balls(21) contacting with the slide grooves(13) and sliding; a pair of bearing plates(23) forming ball holes(22) on both sides to insert the center of the ball; (a fixing plate,30) a guiding groove(31) inserted into the inside of the rail(12); restrained pins(32) which are formed on both ends of the guiding grooves(31), preventing separation of the ball; and many fixing holes(33) formed in front-and-behind and fixed on frame.