baber/WOPTO huggingface dataset:
Patent KR-20000035814-A (KR)
Title: Process for producing difluoromethane
Inventor: TSUDA TAKEHIDE
IPC: C07C17/38
Filed: 1997-08-26
Abstract: PURPOSE: A process for refining high purity difluoromethane(HFC-32) by removing hydrogen fluoride(HF) which is contained in difluoromethane is provided. CONSTITUTION: The process for refining difluoromethane comprises distilling a mixture of dilator methane with hydrogen fluoride and bringing an azeotropic mixture of both compounds as a distillate into contact with sulfuric acid, whereby hydrogen fluoride contained in difluoromethane is absorbed by sulfuric acid.
Patent KR-20000068517-A (KR)
Title: 집적회로 패키지
IPC: H01L23/057
Filed: 1997-07-09
Abstract: 본 발명은 집적회로(18)를 포함하는 집적회로 패키지(10)에 관한 것이다. 내부 집적회로는 복수의 비아(32)를 통해 패키지(10)의 제 1 외부 표면에 위치한 외부 랜드(34)에 연결된다. 비아(32)는 대향하는 제 2 외부표면의 제 1 외부표면으로부터 패키지(10)를 통해 연장된다. 패키지(10)는 제 2 외부 표면에 장착되는 커패시터(28)와 같은 복수의 디바이스를 갖는다. 일부 비아(32)는 외부 랜드(34)의 전체 그룹에 연결된다. 랜드(34)를 단일 비아로 그룹화함으로써 패키지(10)의 제 2 표면에 있는 비아(32)의 수가 감소된다. 비아(32)의 감소로 인해 커패시터(28)는 패키지(10)의 제 2 표면에 추가로 장착될 수 있다.
Patent KR-20000068600-A (KR)
Title: 디스플레이 장치
IPC: G02F1/133
Filed: 1998-06-11
Abstract: 스위칭 속도가, 예를 들면 LC 물질의 유체 역학적 특성을 고려하면서 이들 픽셀 양단 전압의 변화시 픽셀을 증속 구동(overdriving)함으로써 증가되는, "평면 내에서의 스위칭"에 기초한 LC 디스플레이 장치. 상기 보정 수단은 주변 또는 액체 온도의 변화를 보정하기 위해 사용될 수도 있다.
Patent KR-20000057536-A (KR)
Title: Arrangement for feeding wood in a pulp grinder
Inventor: HAIKKALA PEKKA
IPC: D21B1/26
Filed: 1997-12-12
Abstract: PURPOSE: Provided is an arrangement for feeding wood in a pulp grinder comprising a grindstone, a feed chute extending to the grindstone, a piston moving in the feed chute to press the wood against the grindstone, and a closing member to prevent the wood from moving away from the grindstone when the piston is moved away from the grindstone so as to allow the feed of a new batch of wood. CONSTITUTION: Provide is an arrangement by which essentially continuous grinding can be provided under essentially constant grinding conditions, even though the wood is fed into the grinder in batches. The arrangement is characterized in that the piston comprises: at least one closing member that is movable into the feed chute crosswise of the wood to prevent the wood from moving away from the grindstone when the piston is moved away from the grindstone so as to allow a new batch of wood to be fed into the feed chute between the face of the piston and the closing member, and the end face of the piston defining at least one recess into which the at least one closing member can be pushed while the end face of the piston is pressing the wood against the grindstone, so that when the at least one closing member is pushed in the feed chute, the feed chute is closed crosswise of the wood to be ground so that backward movement of the wood is essentially prevented when the piston moves backward.
Patent KR-20000076429-A (KR)
Title: 게르마늄을 회수하기 위한, 광섬유 예형 제조용 유니트에서 나오는 기상 폐기물의 처리 방법
IPC: B01D53/34
Filed: 1999-01-18
Abstract: 본 발명은 
     - 폐액이 기상 폐기물로부터 형성되는 단계, 
     - 게르마늄이 상기 폐액 중에 침전되는 단계 
     를 포함하고, 광섬유 예형 제조용 유니트에서 나오는 게르마늄 함유 기상 폐기물의 처리 방법에 관한 것이다.  본 발명에 따르면, 침전은 폐액에 MgO를 가하여 수행된다.
Patent KR-20010005706-A (KR)
Title: 고분자 광섬유의 전력 처리 용량 향상 방법 및 장치
IPC: G02B6/24
Filed: 1998-01-15
Abstract: 고분자 섬유의 전력 처리 용량은 통상적으로 가우스 분포인 입력 강도 프로파일을 확장하므로써 광이 고분자 섬유 내부로 커플링되는 효율의 큰 감소없이 증대된다. 고분자 성유의 전력 처리 용량의 증대 방법은 a) 섬유 광원으로부터 가우스 강도 프로파일을 갖는 광을 방출하는 단계; b) 고분자 섬유 내부로 방사되기 전에 상기 방출된 광의 피크 전력 프로파일을 감소시키기 위하여 상기 가우스 강도 프로파일의 중심에서의 에너지가 가장자리로 분산되도록 상기 가우스 강도 프로파일을 확장하는 단계; c) 상기 방출된 광을 하나 이상의 고분자 섬유 내부로 전송하는 단계를 포함한다. 바람직하게는, 강도 프로파일을 확장하는데 융합 섬유속이 사용되며, 융합 섬유속은 경사진 입력 말단면을 갖는다. 결과적으로, 광 흡수에 의한용융을 일으키지 않도록 그 한계점 이하를 유지하면서 좀 더 많은 총 전력이 고분자 섬유 내부로 커플링 될 수 있다. 예를 들면, 1와트 이상의 전력이 1mm 직경의 PMMA 섬유를 통하여 전송될 수 있다.
Patent KR-20010012384-A (KR)
IPC: B21K1/30
Filed: 1998-05-15
Abstract: 금속제 디스크 플레이트(3a)의 중앙에 원통 형상의 보스(5)가 일체로 형성된 피가공물의 보스 외주면에 스플라인 치형(12)을 성형하는 스플라인 치형 성형방법에 있어서, 스플라인 치형의 인장성형용 치형(12)이 형성된 원통형 다이(14)와, 다이(14) 중앙에 배치된 보스 가이드용 맨드럴(16)에 대해, 보스(5)가 맨드럴(16)에 결합되도록 피가공물을 배치하고 디스크 플레이트(3a)를 펀치로 눌러서, 다이(14)와 맨드럴(16) 사이의 빈 틈에 보스(5)를 끼워 보스(5) 외주면에 스플라인 치형(5a)을 인장성형한다.
Patent KR-20010013561-A (KR)
Title: 패턴 형성방법
IPC: G03F7/09
Filed: 1999-04-05
Abstract: 본 발명은 유기 반사 방지막과 감광성 재료막 사이의 경계면에서 반응 생성물의 형성을 억제하고 에칭 후에 에칭화 막의 잔사 수를 감소시킴으로써 고해상도 및 고정밀도의 에칭 패턴을 형성할 수 있는 패턴 형성방법에 관한 것이다.  폴리실리콘막으로 이루어진 에칭화 막(11), 유기 반사 방지막(12), 및 산 발생제로서 (a) 오늄염 화합물과 (b) 하나 이상의 설폰 화합물 및 설포네이트 화합물을 함유하는 화학 증폭형 내식막 재료로 이루어진 감광성 재료막(13)이 반도체 기판(10) 상에 설치되고, 마스크(14)를 통해 감광성 재료막(13)이 노출된 다음, 현상하여 패턴화된 감광성 재료막(13b)이 형성된다.  이 후에, 바람직하게는 반사 방지막을 SO 2 -O 2 혼합 가스로 드라이 에칭하고, 에칭화 막을 드라이 에칭하여 에칭화 막의 패턴을 형성한다.
Patent KR-20010068261-A (KR)
Inventor: AHN SEONG JUN
IPC: H01J29/48
Filed: 2000-01-03
Abstract: PURPOSE: An electron gun for a cathode ray tube is provided to prevent a wrong arrangement by responsibly detecting a rotation and an inclination of the electron gun when the electron gun is sealed in a neck part of the cathode ray tube. CONSTITUTION: In an electron gun(10) for a cathode ray tube, a cathode has an electron emission material. A plurality of grids(14,16,18,20) include through holes for passing the electrons emitted from the cathode respectively and are arranged to one side of the cathode sequentially. A stem(32) is connected from the inside of the tube to the outside of the tube and is included in the neck part of the cathode tube to form a vacuum. The first arrangement device(34) detects the rotation direction arrangement rates of the members. The second arrangement device(36) detects the inclination direction arrangement rates of the members.
Patent KR-20000057803-A (KR)
Inventor: MUKAI MIKIO
IPC: H01L27/12
Filed: 2000-01-26
Abstract: PURPOSE: Gate charge accumulate memory cell is provided to simplifying the process of fabrication and to depress the increasing of outer wiring or terminals, simple capacitor, and small cell size. CONSTITUTION: Gate charge accumulate memory cell comprising a channel forming region(15), a 1st gate, a 2nd gate(19) is capacity coupled with the 1st gate, a source(17)/drainage(16) region formed adjacent with the channel forming region but spaced each other; a 1st non linear resistor device(30) having two ends and the one end of them connected on the 1st gate(13); a 2nd non linear resistor device having the 1st gate(13), an insulate film(12), and a channel forming region or at least one side of the source/drainage region.
Patent KR-20010077576-A (KR)
Title: Plasma Display Panel and Method Of Driving The Same
Inventor: KANG SEOK DONG
IPC: G09G3/294
Filed: 2000-02-03
Abstract: PURPOSE: A plasma display panel and a method for driving the same are provided to enhance luminescence efficiency by using efficiently an energy for a panel. CONSTITUTION: A couple of trigger electrode(50,56) formed with metal bus electrodes(46,52) and transparent electrodes(48,54) is located on a center portion of a discharge cell. A couple of sustain electrode(44,64) formed with metal bus electrodes(38,58) and transparent electrodes(42,62) are located on both boundary portions of the discharge cell. Each transparent electrode(42,62) of the sustain electrode couple(44,64) is separated from the discharge cell. Each transparent electrode(42,62) of the sustain electrode couple(44,64) is separated into the both edges of the discharge cell. The transparent electrodes(48,54) of the trigger electrode couple(50,56) is formed only on a center portion of the discharge cell.
Patent KR-20000030252-A (KR)
Inventor: HA JAE MONG
IPC: A61K8/20
Filed: 2000-02-16
Abstract: PURPOSE: A composition for improving oral sanitation containing the extract of Carthamus tinctorius L. seed is provided to prevent from the formation of decayed teeth and the occurrence of oral diseases, and to recover the injured teeth. CONSTITUTION: Carthamus tinctorius L. seed is extracted with any one or more of the solvent selected from the group consisting of water, alcohol, methanol, isopropylalcohol, propyleneglycol, chloroform and acetone, and the result extract is filtered. Because the extract of Carthamus tinctorius L. has the distinct properties, such as weakening the oral inflammation, inhibiting the demineralization of teeth and accelerating the remineralization of teeth, the addition of 0.001-5 wt.% such extract to the oral composition facilitates the improvement of oral sanitation.
Patent KR-20010084083-A (KR)
Title: Kochujang composition containing Horseradish/Mustard and Preparation method thereof
Inventor: AHN EUN YEONG
IPC: A23L11/20
Filed: 2000-02-23
Abstract: PURPOSE: Provided is a composition of Korean hot pepper paste containing spice such as Wasabia koreana and mustard, which can prevent the growth of bacteria generating gas in the mixing process of the paste and improve flavor and taste of hot pepper paste. CONSTITUTION: The composition includes powdered red pepper, koji powder, a sweet solution made from glutinous rice mixed with malt extract, saccharified at 60deg.C for 1hr and filtrated, 0.01-1.2wt% of powder or extract of Wasabia koreana and mustard, by the total weight of the composition and salt.
Patent KR-20010084145-A (KR)
Title: Pellicle for protecting a photo mask
Inventor: KIM SANG MUK
IPC: G03F1/64
Filed: 2000-02-24
Abstract: PURPOSE: A detachable pellicle of a semiconductor wafer for protecting a photo mask is provided, to allow the damaged photo mask to be replaced by new one in short time, thereby reducing the delay time due to the damage of a photo mask. CONSTITUTION: The pellicle is such that a pellicle base(40) and a photo mask can be separated. A pellicle base(40) is formed on a glass sheet(10), a guide groove(42) is formed inside of the pellicle base(40), and a rubber pad(44) is placed inside of the guide groove(42). A pellicle frame which has a handle is inserted into the guide groove(42), and a photo mask is formed inside of the pellicle frame. The sides of the pellicle frame are in gear with the guide groove(42) of the pellicle base(40), to allow the pellicle frame to be fixed to the pellicle base(40) detachably.
Patent KR-20010087493-A (KR)
Title: A survey equipment and method for rock excavation surface
Inventor: HWANG SANG GI
IPC: G01B11/24
Filed: 2000-03-07
Abstract: PURPOSE: A shape measuring device for a cut surface of a bedrock and a method thereof are provided to automatically recognize the surface structure inside a bedrock in a construction site for increasing the stability of the construction and reflecting the recognized surface structure to the planning of the construction, thereby reducing the construction period and the construction cost. CONSTITUTION: A shape measuring method for a cut surface of a bedrock in a device thereof including four laser pointers for scanning cut surfaces, two closed circuit cameras for reading scanning points, and two stepping motors for controlling horizontal and vertical movements of the laser pointers under the control of a control box, includes the steps of reading a central position of scanning points in two images formed by the closed circuit cameras as pixel coordinates, computing three dimensional coordinates of the scanning points on the basis of coordinates of the laser pointers obtained by the two images and focusing distances of the cameras, repeating the above steps by moving the positions of the laser pointers regularly, interpolating the obtained three dimensional model coordinates to compute a three dimensional model, and converting the model data into geographical data by rotating the model data with reference two reference surfaces.
Patent KR-20010091123-A (KR)
Title: Method for processing metal foam using casting
Inventor: HWANG BYOUNG WOOG
IPC: B22D23/04
Filed: 2000-03-13
Abstract: PURPOSE: A method for manufacturing a metallic porous material having a three dimensional network structure using a casting method is provided in which the porous material having a pore size of 1 to 30 mm can be manufactured using the casting method so as to solve existing problems of high costs and low quality. CONSTITUTION: The method for manufacturing the metallic porous material using a casting method comprises the steps of bonding each of the formed salts by forming salts in a sphere or granule shape; positioning the bonded salts(9) in a preheated pressing mold(1); pressing the pressing mold(1) using a press(3) so that the molten metal(7) is injected between voids of the bonded salts after fusing a molten metal(7) having a fusion point lower than that of salts at the outside of the pressing mold(1), and injecting the fused molten metal into the mold; and obtaining final metallic porous material by putting the separated press formed material into water so as to remove salts after separating the press formed material from the mold when press forming is completed.
Patent KR-20010091260-A (KR)
Title: Exponent unit for data processing system
Inventor: KIM HONG GYU
IPC: G06F5/01
Filed: 2000-03-14
Abstract: PURPOSE: An exponent unit of a data processing system is provided to process data bits twice more than before with the minimum hardware addition. CONSTITUTION: An exponent unit(150) includes latches(202,204,206,208,210), a logic circuit(220), an exponent detector(230), AND gates(250,260) and an adder(270). The latches(202,204) receive a carry bit and an overflow bit stored in a status register through a data bus(33) and latch the same. The latch(206) latches an operand which is inputted through a program data bus(32). The latch(208) latches a mode signal representing whether an instruction decoded in a decoder is a signal precision exponent instruction or a double precision exponent instruction. When the decoded instruction is the signal precision exponent instruction, the mode signal has a high level. When the decoded instruction is the double precision exponent instruction, the mode signal has a low level. The latch(210) latches an exponent of a previous operand. The latches(202,204,206,208,210) maintain the latched values for a cycle.
Patent KR-20010091755-A (KR)
Title: Road studs
Inventor: UM JAE WOOK
IPC: E01F9/06
Filed: 2000-03-17
Abstract: PURPOSE: A road stud is provided to help for careful driving in the daytime and nighttime by guiding the eyes of drivers by being laid under the road surface on the middle of a road safety facility. CONSTITUTION: In a normal road stud provided with an anchor(20) laid under the ground, a body(10) adhered closely to a road surface to be exposed and a reflector attached to the upper part of the body, the body and the anchor are molded from a mixture of rubber or soft synthetic resins and a luminous paint in the shape of a normal body and an anchor, wherein cogged projections(22) are formed on the anchor.
Patent KR-20000030863-A (KR)
Inventor: LEE JONG HWA
IPC: A01G23/00
Filed: 2000-03-22
Abstract: PURPOSE: A tree planting method is provided to make fine the environment of city to improve the environment and to prevent the waste of budget of a company or a nation by planting treed effectively by preventing the withering due to the defects of water drain and by growing the trees to well developed trees. CONSTITUTION: A first impermeable layer(33) is formed not to drain water when the nature of the soil is silt, clay, organic silt or organic clay. A good soil cover layer(32) is covered thereon by a street construction method. Thereby the base for street construction is finished. After a planting crater(43) is formed for the planting according to the standard construction method at the soil cover, at least one of holes(38) for drain and penetrated to a first impermeable layer, a first gravel layer(34), a good soil layer(35), a second impermeable layer(36) and a second gravel layer(37) are formed by using an auger digging a hole by a screw or a drill on the bottom ground of the planting crater. Gravels(39), crushed stones(40) and sand(41) are filled in the crater to cut off the backward flow of water from the down and to make smooth the drainage. And a tree(42) is planted therein to prevent the withering due to the defect of drain.
Patent KR-20010094200-A (KR)
Title: a siphon
Inventor: JANG HEUNG SIK
IPC: E03F5/20
Filed: 2000-04-04
Abstract: PURPOSE: A siphon type underground water flow system of a subway is provided to reduce cost for public works by performing public works easily on subway rails and to minimize rails dipped into water by improving drainage efficiency with the remarkably rising drainage speed. CONSTITUTION: A siphon type underground water flow system consists of: a main siphon pipe(1) having a pipe body(11) flowing the drain amount of water, a dipping part(12) bent downward at an end of the pipe body to be dipped into a water tub(S), and a drain part(13) having the other end of the pipe body bent downward to drain underground water; a circular-arc underflow pipe(2) extended to the end of the drain part of the main siphon pipe and bent upward in semicircular form; a siphon generating pipe(3) dipped into the water tub and extended downward near the dipping part of the main siphon pipe to generate siphon action; and an air discharge pipe(4) extended to the drain part from the neighboring pipe body with a slope to discharge air in the main siphon pipe. An air discharge valve(5) is mounted on the pipe body of the main siphon pipe between the dipping part and the auxiliary siphon pipe(3) to discharge air in the pipe in one direction. An isolating part(41) is protruded to a part of the upper end of the air discharge pipe to flow water of the pipe body primarily through the air discharge pipe. Another isolating part(42) is protruded into the drain part to minimize influence of water flowing through the drain part. The air discharge pipe discharges air in the pipe together with water. The circular-arc underflow pipe prevents external air from flowing into the pipe. Therefore, a main siphon pipe having a small diameter can drain a large amount of underground water.
Patent KR-20010096113-A (KR)
Inventor: KIM JEONG SEOP
IPC: H01J29/76
Filed: 2000-04-17
Abstract: PURPOSE: A deflection yoke is provided to compensate for the vertical deflection of the screen in a stable manner by preventing the coil cap from being moved. CONSTITUTION: A deflection yoke comprises a coil separator(10) including a screen part(11) coupled to the screen surface of a CRT and arranged at the outer periphery of the coil separator, a rear cover and a neck part extended from the central surface of the rear cover and coupled to an electron gun part of the CRT, wherein the screen part has at the outer periphery thereof a groove(100); a horizontal deflection coil and a vertical deflection coil arranged at the inner periphery and outer periphery of the coil separator, respectively, and which generate a horizontal deflection magnetic field and a vertical deflection magnetic field, respectively; and a coil cap(20) having a winding groove formed along the outer periphery of the coil cap so as to allow a tilting coil(21) for correcting tilted screen to be wound along the winding groove. The coil cap has a plurality of hooks(22) arranged along the inner surface of the coil cap so as to be coupled to the screen part of the coil separator, and a protrusion(200) arranged at the inner surface of the coil cap so as to be inserted into the groove formed at the outer periphery of the screen part.
Patent KR-20000037402-A (KR)
Inventor: LEE HANG SUN
Filed: 2000-04-21
Abstract: PURPOSE: A local information management apparatus through the medium of the data communications network and the method thereof are provided to execute exclusive publicity for restaurants by a category of business, which acquire the evaluation of the top grade, based on the result of a customer evaluation group. CONSTITUTION: A communications control module(52) takes charge of the control related to the data communication with a plurality of subscriber terminals(10a-10n) and a first to a third restaurant terminal(20a-20c). A control part(54) is in charge of the control for the publicity management of restaurants by a category of business, based on the evaluation result of the subscriber terminals(10a-10n). A subscriber information data base(56) stores the information of the subscriber terminals(10a-10n), joined under the control of the control part(54), and the committee registration status of a customer evaluation group. An electronic page generation module(62) generates the electronic page screens of an information management server transferred to the subscriber terminals(10a-10n) and the first to the third restaurant terminal(20a-20c).
Patent KR-20010106004-A (KR)
Title: Apparatus for Assembling Permanent Magnet of Linear Motor
Inventor: HWANG JI HYEON
IPC: H02K15/03
Filed: 2000-05-20
Abstract: Compounds represented by general formula (I), pharmaceutically acceptable acid addition salts thereof, or hydrates of the same; drugs containing these compounds; medicinal compositions containing these compounds together with pharmaceutically acceptable carriers; and 2-amino-2-(2-(4- (1-hydroxy-5-phenylpentyl)phenyl)ethyl)propane-1,3-diol or 2-amino-2-(2- (4-formylphenyl)ethyl)-propane-1,3-diol optionally protected at the amino and/or hydroxy group or salts thereof, each useful as an intermediate in synthesizing the above compounds. In said formula, R 1, R 2, R 3 and R 4 represent each hydrogen or acyl. Because of having little toxicity, high safety and excellent immunosuppressive effects, these compounds are useful as preventives or depressants for rejection reactions in organ or bone marrow transplantations and preventives or remedies for various autoimmune diseases, various allergic diseases, etc.
Patent KR-20010106895-A (KR)
Inventor: NA JEONG GEUN
IPC: H01L21/205
Filed: 2000-05-24
Abstract: 한 배치의 웨이퍼들에 각기 도포되는 막에 대한 두께 균일성을 개선하기 위하여, 확산/저압화학기상증착 장비등과 같은 막증착 설비의 개선된 보우트 구조가 개시되어 있다. 그러한 보우트 구조는, 보우트의 수직방향의 길이는 종래의 길이와 같게 하되, 보우트에 형성된 슬롯의 간격을 종래에 비해 작게 함으로써 슬롯수가 종래에 비해 많도록 하여 보우트의 중앙부위에 웨이퍼들이 보다 많이 로딩되게 함을 특징으로 한다. 따라서, 한 배치의 웨이퍼들에 각기 도포되는 막들에 대한 두께 균일성이 최적으로 보장되는 이점이 있다.
Patent KR-20010029789-A (KR)
Inventor: NAKAGAWA TAKASHI
IPC: G11B17/04
Filed: 2000-06-09
Abstract: PURPOSE: To provide a head carriage device wherein one side of a head arm is supported, the non-tilted state of the head arm is maintained even when turned, the life of a leaf spring member is prolonged, the head arm is smoothly turned and the degree of designing freedom is made higher. CONSTITUTION: This device is provided with a carriage 101, a head arm 102, a leaf spring member 105 extended from the head arm 102, a fixing member 106 for fixing the fixing part 105b of the leaf spring member 105 to the carriage 101, a twist coil spring 107 for pressing the head arm 102 in the direction of approaching the carriage 101, a vertical moving member for rotating the head arm 102 into the position of moving away from the carriage 101 or the position of approaching it, and a locking piece 102c provided in one side of the head arm 102 so as to lock the vertical moving member. In the head arm 102, a first protruded part 102d and a second protruded part are formed in protruded shapes.
Patent KR-20010111364-A (KR)
Inventor: LEE SEUNG WON
Filed: 2000-06-10
Abstract: 본 발명은 다이아몬드를 포함하는 디스크형 절삭공구에 관한 것이다. 상기 절삭공구의 코어상에는 상기 절삭공구의 회전중심으로부터 제 1 반경(R1) 내지 제 5반경(R5)이 직경에 따라 적당한 갯수로 배열되어 있다. 그리고, 각 반경상에는 다수의 관통공이 원주방향으로 등간격을 이룬채 다수 배열되어 있다. 이로 인해 디스크형 절삭공구로 절삭할 경우 공구와 피절삭재 사이에 과열현상이 일어나는 것을 방지하여 공구의 열변형을 방지하면서도, 절삭공구의 강도를 유지할 수 있는 특징이 있다.
Patent KR-20000054603-A (KR)
Inventor: JIN IN TAE
IPC: B21C25/00
Filed: 2000-06-10
Abstract: PURPOSE: An apparatus for fabricating curved metal pipes and bars having specific sectional shapes is provided to solve the former problems by fabricating curved metal pipes and bars with a single extrusion process. CONSTITUTION: An extruded material in a single rectilinear circular pipe continues to pass through the surfaces of a bending metal mold and an eccentric plug(3) and speed difference is generated by eccentricity of inlet/outlet of the bending metal mold. The extruded material is bent in an opposite eccentric direction from the outlet of the bending metal mold. The bending degree, that is, the curvature of a curved metal pipe is adjusted depending on eccentricity.