baber/WOPTO huggingface dataset:
Patent KR-20100049019-A (KR)
Title: Compositions
Inventor: ADAMS GERALD
IPC: C12Q1/68
Filed: 2008-06-16
Abstract: A composition for carrying out a chemical or biochemical reaction, said composition being in a freeze-dried form and comprising (i) a set of reagents comprising at least some of the chemical or biochemical reagents necessary for conducting said chemical or biochemical reaction, including at least one reagent which is fluorescent (ii) a glass forming agent, and (iii) threonine. Kits comprising these compositions and methods of using them form a further aspect of the invention.
Patent KR-20100067086-A (KR)
Title: Powdery niambox(oh)y compounds, procedures for the production of the same; as well as the use of the same in batteries
Inventor: JAHN MATTHIAS
IPC: C01G53/00
Filed: 2008-09-02
Abstract: The present invention relates to pulverulent compounds of the formula NiMO(OH), a process for preparing them and also their use as active material for nickel metal hydride batteries and/or as precursor for the preparation of lithium compounds for use in secondary lithium batteries.
Patent KR-20100076957-A (KR)
Title: Polymer alloy and process for producing the same
Inventor: TAKAHASHI HIROSHI
IPC: C08J3/28
Filed: 2008-09-18
Abstract: A polymer alloy comprising at least two thermoplastic-resin ingredients. It is useful for providing a structural material having excellent mechanical properties or a functional material having excellent regularity. It can have a finely controlled structure which has been evenly dispersed. Also provided is a process for producing the polymer alloy. The polymer alloy made of at least two thermoplastic-resin ingredients is produced by a process in which a precursor for at least one of the thermoplastic-resin ingredients constituting the polymer alloy is chemically reacted in the presence of a remaining thermoplastic-resin ingredient and/or thermoplastic-resin ingredient precursor to induce spinodal decomposition. This polymer alloy hence has excellent regularity and can have a finely controlled structure which has been evenly dispersed.
Patent KR-20100057911-A (KR)
Title: Air conditioner
Inventor: YABU TOMOHIRO
IPC: F24F1/00
Filed: 2008-09-12
Abstract: An air conditioner is reduced in size as a whole by making a humidity adjustment unit as small as possible. The air conditioner (1) has the humidity adjustment unit (2) for adjusting the humidity of air and a temperature adjustment unit (8) for adjusting the temperature of the air. The humidity adjustment unit (2) has a casing (20) for humidity adjustment, first and second adsorption heat exchangers (14, 15) for adjusting the humidity of air in the casing (20) for humidity adjustment, and an electric unit (19) for humidity adjustment. The temperature adjustment unit (8) has a casing (80) for temperature adjustment placed next to the casing (20) for humidity adjustment and also has a heat exchanger (94) for temperature adjustment received in the casing (80) for temperature adjustment and adjusting the temperature of air. The electric unit (19) for humidity adjustment has heat radiation fins for radiating produced heat and is placed in an air path in the casing (80) for temperature adjustment.
Patent KR-20100087751-A (KR)
Inventor: AKIMOTO AKITO
IPC: H02K15/04
Filed: 2008-11-18
Abstract: 한쌍의 코일 선재(30)의 일단측에서 한쌍의 턴부(42)끼리를 교차시키고, 또한 각 코일 선재(30)의 각 축선이 이루는 각도(θ)가 소정 범위(예를 들면, 10도 이상 90도 이하)로 되도록 각 코일 선재(30)의 타단측을 지지한다.  이 상태에서 각 코일 선재(30)를 각각의 축선에 대하여 동일 방향으로 각각 회전시키면 한쌍의 코일 선재(30)의 각 턴부(42)끼리가 일단측으로부터 타단측을 향하여 차례차례 교차해 감으로써 인터레이스(interlace)가 실시된다.
Patent KR-20100111271-A (KR)
Title: Agent and method for tanning skins and pelts
Inventor: ZOTZEL JENS
IPC: C14C3/02
Filed: 2008-11-21
Abstract: Method for tanning skin and fur, comprises treating the skin and fur with tanning agent comprising deglycosylated iridoid and/or deglycosylated secoiridoid. An independent claim is included for a tanning agent containing 0.1-25 wt.% of deglycosylated secoiridoid and/or its mixture.
Patent KR-20100099275-A (KR)
Inventor: LOEBEL JOHANNES
IPC: B29B7/00
Filed: 2008-12-04
Abstract: 본 발명은 하기 일반식 Ia, 일반식 Ib 또는 일반식 Ic의 착색제, 또는 이들의 혼합물의 제조 방법으로서, 혼합 장치 내에서  
(a)	테트라카르복실산 또는 이의 작용성 유도체를  
(b)	(ⅰ) 지환족 아민, 
     (ⅱ) 방향족 아민, 
     (ⅲ) 지환족 디아민, 
     (ⅳ) 방향족 디아민 
     으로부터 선택되는 하나 이상의 화합물과  
(c)	임의로 추가 첨가제의 존재하에 
(d)	임의로 습윤제의 존재하에  
반응시키는 단계를 포함하는 제조 방법에 관한 것이다: 
일반식 Ia  
   
일반식 Ib  
   
일반식 Ic  
 . 
이 착색제는 천연 및 합성 유래의 거대 분자 유기 및 무기 물질을 착색하는 데 유용하다.
Patent KR-20100099277-A (KR)
Inventor: ALARD PHILIPPE MARC LOUIS
IPC: C07K16/28
Filed: 2008-12-09
Abstract: 본 발명은 β-아밀로이드 펩티드, 특히 사람 β-아밀로이드 펩티드와 결합하는 항원 결합성 단백질; 상기 항원 결합성 단백질을 사용하여, 증가된 β-아밀로이드 수준 또는 β-아밀로이드 침착을 특징으로 하는 질병 또는 장애, 특히 알츠하이머병, 그리고 연령 관련 황반변성 및 녹내장형 질병 및 β-아밀로이드 의존성 백내장 형성을 포함하는 증가된 β-아밀로이드 수준 또는 β-아밀로이드 침착을 특징으로 하는 눈 또는 시신경에 영향을 미치는 질병 또는 장애를 치료하는 방법; 상기 항원 결합성 단백질을 포함하는 약제 조성물; 및 제조 방법에 관한 것이다.
Patent KR-20100137553-A (KR)
Inventor: MITLMEIER NORBERT
IPC: H01H9/54
Filed: 2009-02-25
Abstract: 스위칭 디바이스(10)를 동작시키기 위한 방법 및 상기 방법에 사용하기 위한 디바이스(10)는 제공되고, 여기서 EMC 고려를 위해 제공된 에너지 저장 매체(20), 특히 캐패시터는 각각의 접속된 사용기기가 턴 오프된 후에도 스위칭 엘리먼트(14)의 단기간 동작을 통해 제어된 방식으로 에너지가 인가되고, 에너지 저장 매체(20)는 이에 따라 방전된다.
Patent KR-20110018883-A (KR)
Inventor: WEICHSLBERGER GUNTHER
IPC: H05K3/46
Filed: 2009-05-29
Abstract: 전자 모듈을 제조하는 방법 및 회로기판 구조가 개시되어 있다. 상기 방법에서는, 적어도 하나의 부품이 절연 물질 층 내부에 내재되어 있고, 접촉점들이 상기 전자 모듈에 포함된 상기 도체 구조들에 전기적으로 상기 부품을 연결하게 한다. 본 발명에 따르면, 상기 부품으로부터의 열 전도를 증가시키는 적어도 하나의 열 비아(thermal via)가 상기 부품 주변의 상기 절연 물질층에 만들어진다.
Patent KR-20110005733-A (KR)
Inventor: FIORENTINO MARCO
IPC: G02B6/42
Filed: 2008-05-07
Abstract: 제1 컴퓨팅 장치(210)와 제2 컴퓨팅 장치(220) 사이에 포인트 투 포인트 통신을 제공하기 위한 광학 엔진(100).  상기 광학 엔진(100)은 기판(106) 위에 형성되고 상기 기판의 평면에 평행으로 이동하는 광 신호를 생성하도록 구성된 변조된 하이브리드 마이크로 링 레이저(120)를 포함한다.  상기 광학 엔진은 상기 광 신호를 상기 변조된 링 레이저로부터 정의된 영역(108)으로 인도하도록 구성된, 상기 기판의 평면에 평행인 평면에 또한 형성된 도파관(130), 상기 광 신호를 멀티 코어 광섬유(150)에 결합하도록 구성된 상기 정의된 영역에 있는 도파관 결합기(140), 및 상기 광 신호를 수신하고 상기 제2 컴퓨팅 장치에 전송하도록 구성된 상기 정의된 영역 내에 있는 멀티 코어 광섬유를 더 포함한다.
Patent KR-20110040765-A (KR)
Inventor: CARETTA GIANLUCA
IPC: F02D41/34
Filed: 2009-05-25
Abstract: 직접 연료 분사 방식의 자동차 내연 엔진(1)을 제어하는 방법이 개시되는데, 본 방법은 소정 조건 하에서 제1 연료 품질 파라미터 결정 절차를 이용하여 연료 품질 파라미터(F)가 결정되는 연료 적응 단계와, 엔진(1)에서 분사 시작(SOI)의 폐루프 제어에서 목표 값(αT)으로서 연료 품질 파라미터(F)로부터 유도된 연료 연소 특성 파라미터(MFB50)의 값을 이용하는 제어 단계를 포함하고, 폐루프 제어는 제1 연료 품질 파라미터 결정 절차와는 상이한 제2 연료 품질 파라미터 결정 절차를 이용하여 연료 연소 특성 파라미터(MFB50)의 실제 값(αA)을 결정한다.
Patent KR-20120080302-A (KR)
Title: Jellyfish removal apparatus and jellyfish removal ship
Inventor: MYEONG HYEON
IPC: E02B15/00
Filed: 2011-01-07
Abstract: PURPOSE: A jellyfish removal apparatus and a jellyfish removal ship is provided to equipped with a grid capable of cutting jellyfish by a thin wire, etc, thereby capable of simplifying a structure of a product for removing jellyfish. CONSTITUTION: A jellyfish removal apparatus comprises a grid(10), and a bracket. The grid cuts a jellyfish by making the jellyfish to pass the grid cut through. The bracket fixes a grid in a ship body(20). The grid is fixed to the ship body through a bracket. The grid is arranged to be orthogonal with a progressive direction of the ship body. The grid is arranged to be parallel with the surface of sea. The grid is combined to the bracket to be foldable and unfoldable.
Patent KR-20110092224-A (KR)
Title: Vibrational wave motor, lens barrel and camera
Inventor: ASHIZAWA TAKATOSHI
IPC: H02N2/00
Filed: 2011-02-01
Abstract: PURPOSE: A vibration wave motor, a lens barrel, and a camera are provided to coat alumite on the sliding surface of a mover, thereby enhancing the abrasion resistance features of the vibration wave motor. CONSTITUTION: An electric machine transforming device is excited by a driving signal. A vibrator(11) generates a progressing vibration wave on a driving surface(18a) by the excitation. A counterpart movement member(12) is driven by the progressing vibration wave. A pressurization member(22) is formed between a gear member(23) and a bearing support member(24) wherein the gear member is fixed to an output axis(20). The gear member is fixed by a stopper(25).
Patent KR-20120063412-A (KR)
Title: Docking station having structure for increasing loudness and for improving quality of sound
Inventor: KIM JUN TAI
IPC: H04B1/38
Filed: 2011-02-11
Abstract: PURPOSE: A docking station having a structure is provided to increase sound volume without power supply by outputting sound volume of a mobile terminal through a guide hole. CONSTITUTION: A holding unit holds a mobile terminal which a speaker is arranged. A body unit(110) installs the holding unit and mechanically connects the speaker. The body unit connects the speaker and includes a collecting hole(113) and a horn type guide hole(115). The guide hole penetrates from the collecting hole and guides the collected sound volume.
Patent KR-20120093509-A (KR)
Title: Wafer polishing apparatus
Inventor: LEE HO JAE
IPC: H01L21/304
Filed: 2011-02-15
Abstract: PURPOSE: A wafer polishing apparatus is provided to securely fix template assembly to a rubber chuck or a head body using a bond reinforcing member. CONSTITUTION: A rubber chuck(300) is combined with a head body(100). The rubber chuck comprises a membrane(310) and a rubber guide ring(320). Template assembly(400) comprises a guide member(420) and a template(410). The template is arranged under the membrane. The guide member is attached to the template. A bond reinforcing member(200) supports the template assembly. The bond reinforcing member is fixed to the rubber chuck or the head body by a bolt. A coupling groove for passing through the bolt is formed on the bond reinforcing member.
Patent KR-20120094741-A (KR)
Title: Method for manufacturing of particle external additive for e-paper using sio2 and particle external additive for e-paper using sio2 prepared by using the method
Inventor: LEE SANGK UG
IPC: C01B33/18
Filed: 2011-02-17
Abstract: PURPOSE: A manufacturing method of particle external additives for e-paper using a silicon dioxide is more provided to quantitatively and uniformly adsorb external additives to particles by using solution adsorption method, to remarkably improve durability by chemical bonds, to retrain aggregation phenomenon, and to remarkably improve flexability. CONSTITUTION: A manufacturing method of particle external additives for e-paper using a silicon dioxide comprises a purification step(S10) purifying silicon dioxide for heat-treating silicon dioxide at 300-500 °C for 15-30 hours, and an amino group substitution step(S20) manufacturing silicon dioxide having an amino group by adding and reacting the silicon dioxide to the solvent. The amino substitution step comprises a step(S21) of manufacturing a reactive solution by adding the silicon dioxide into the solvent and dispersing the same, a step(S22) of heating the reaction solution under nitrogen atmosphere, a step(S23) of adding (3-aminopropyl) triethoxysilane into the reaction solution, and a step(S24) of stirring the reaction solution.
Patent KR-20120098355-A (KR)
Title: A paper process manufacture equipment
Inventor: JUN YONG KYUNG
IPC: D21F2/00
Filed: 2011-02-28
Abstract: PURPOSE: An apparatus for fabricating paper is provided to entirely and evenly spread paper materials with physical property of a liquid phase. CONSTITUTION: An apparatus for fabricating paper comprises: a conveyor belt for transferring paper materials; a plurality of rolls provided at the both ends of the conveyor belt; and a vibrator for applying vibration in an axis direction of a main roll. The vibrator comprises: a main body(110); a sliding housing for reciprocating sliding; an eccentric shaft; and a driving device(140) for providing rotation force to the eccentric shaft.
Patent KR-20120100305-A (KR)
Title: Composition for enteric hard capsule and enteric hard capsule prepared thereof
Inventor: SON JIN RYUL
IPC: A61K9/52
Filed: 2011-03-03
Abstract: PURPOSE: A composition for enteric hard capsules and an enteric hard capsule manufactured by using the same are provided to enhance mechanical strength and transparency and to delay the salting out. CONSTITUTION: A composition for enteric hard capsules comprises 50-90 parts by weight of hydroxypropyl methylcellulose phthalate(HPMCP), 10-50 parts by weight of hydroxypropyl methylcellulose(HPMC), 0.1-2.5 parts by weight of water-soluble divalent base, and 3.5-7.5 parts by weight of extra alkaline chemicals. The content of each component is based on the sum total 100 parts by weight of the HPMC and the HPMCP. The HPMCP comprises 20-24 wt% of methoxy group, 6-10 wt% of hydroxy propoxy group, and 21-26 wt% of phthalyl, and has the dynamic viscosity of 48~66cSt. The water-soluble divalent base includes calcium hydroxide. The extra alkaline chemicals comprise ammonia, NaOH, potassium hydroxide or a combination thereof. The composition additionally includes 1-5 parts by weight of plasticizer based on the sum total 100 parts by weight of the HPMC and HPMCP. The composition additionally includes 0.05-0.5 parts by weight of emulsifier based on the sum total 100 parts by weight of the HPMC and HPMCP.
Patent KR-20120102988-A (KR)
Title: Humidification device for fuel cell
Inventor: KIM HYUN YOO
IPC: H01M8/04
Filed: 2011-03-09
Abstract: PURPOSE: A membrane humidifier for a fuel cell is provided to enable wet air to uniformly penetrate into a center part of a hollow fiber membrane through a wet air-injection hole of each separation module, thereby capable of improving moisturizing effectiveness to dry air flowing through the central part of the hollow fiber membrane. CONSTITUTION: A membrane humidifier for a fuel cell comprises: a hollow type housing(101) with a wet air inlet(104) formed through one side and a wet air outlet(105) formed through the other side; a joint chamber formed on an inner side of the hollow type housing to one body; many internal divided modules, through which a wet air injection hole is formed, arranged to adjacent each other inside the hollow type housing while coupled to the joint member, and hollow-fiber membrane bundles(107) inserted into the each of the internal divided modules.
Patent KR-20120110251-A (KR)
Title: Electric fan with regrigerant circulation device
Inventor: SUNG BAEK HWA
IPC: F24F5/00
Filed: 2011-03-29
Abstract: PURPOSE: An electric fan with a coolant circulating device is provided to rapidly generate cold wind regardless of ambient temperature because cold air of a coolant conducted to a plurality of cold air transferring plate and mesh makes a flow generated by blades. CONSTITUTION: An electric fan with a coolant circulating device comprises a fixed frame(140), a frame unit(200), a coolant pack(300), a coolant circulating pump(400), a plurality of cooling air transferring plate(500), and a coolant circulating pipe(600). The fixed frame is joined to a front safety net. The frame unit comprises a first frame(210) installed in the fixed frame, a second frame(220) being spaced from the first frame at a predetermined distance, and a connecting bar connecting each edge of first and second frames. The coolant pack is installed in one side of the lower part of the frame unit. The coolant circulating pump is installed in the upper part of the coolant pack. The cooling air transferring plate is installed in between the first and second frames of the frame unit by being vertically spaced at a predetermined interval. The coolant circulating pipe penetrated from the coolant circulating pump and the cooling air transferring plate and connects the coolant circulating pump and the coolant pack.
Patent KR-20120110647-A (KR)
Title: Incubator for micro-algae
Inventor: OH SEOK JIN
IPC: C12M1/24
Filed: 2011-03-30
Abstract: PURPOSE: A microalgae growing apparatus is provided to quickly and easily catch an optimal culture condition. CONSTITUTION: A microalgae growing apparatus comprises: a controller(3) with a timer which controls light emitting time and a plurality of control switches which controls light output by each wavelength; a test tube holder(6) which supports the test tube(4) and has one or more light emitting devices; and a cover covering the test tube. The cover has a sensor. The control switch has various channels for controlling different light output.
Patent KR-20120110685-A (KR)
Title: Torque control method for wind turbine
Inventor: KOO KEUN MO
IPC: H02P9/04
Filed: 2011-03-30
Abstract: PURPOSE: A method for controlling the torque of a wind turbine is provided to decrease shocks caused by the change of the torque. CONSTITUTION: A method for controlling the torque of a wind turbine comprises following steps. A torque control is processed on the basis of a lookup table(S100). Whether or not the rotary speed of the wind turbine becomes less than a pre-set RPM(Revolution Per Minute) value is determined after a reference gradient gets into a rated power generation range(S200,S300). If the rotary speed is changed into less than the pre-set value, a torque value corresponding to the present rotary speed is compared with a present torque value(S400). If the present torque value is higher, first and second gradients which are set on the basis of the present rotary speed are controlled(S500). If the present torque value is smaller, the torque control is processed according to the lookup table(S600). [Reference numerals] (AA) Start; (BB) No; (CC) Yes; (DD) No; (EE) Yes; (FF) No; (GG) Yes; (S100) Facilitating the torque control in a first area on the basis of a lookup table; (S200) The rotary speed of the wind turbine exceeds the regulated speed?; (S300) Facilitating the torque control by entering a second area by estimating a standard gradient; (S400) A torque value corresponding to the present rotary speed is compared with a present torque value; (S500) Whether or not the present torque values is above the set torque value on the lookup table; (S600) Increasing or decreasing the torque on the basis of the first and second gradients
Patent KR-20120113140-A (KR)
Title: Nitride based light emitting device with excellent light properties
Inventor: CHOI WON JIN
IPC: H01L33/40
Filed: 2011-04-04
Abstract: PURPOSE: A nitride based light emitting device with a high luminous property using impurities is provided to improve a luminous property by forming a p-electrode contact layer doped with a p type impurity and an n type impurity on a p type nitride layer. CONSTITUTION: An n type nitride layer(210) is formed on a substrate. An active layer(220) is formed on the n type nitride layer. A p type nitride layer(230) is formed on the active layer. A p-electrode contact layer(240) is formed on the p type nitride layer. The p-electrode contact layer is made of nitride doped with the n type impurity and the p type impurity. [Reference numerals] (240) P-electrode contact : Si, Mg
Patent KR-20120113538-A (KR)
Title: Digital power meter system and, method for error detecting thereof
Inventor: HUR KYEON
IPC: G01R22/10
Filed: 2011-04-05
Abstract: PURPOSE: A digital watt-hour meter system and a method for detecting the malfunction of a digital watt-hour meter are provided to determine the malfunction of the system by storing electricity values in three kinds of areas and comparing the electricity values with each other. CONSTITUTION: A main processor(100) and a sub processor(200) detect a voltage and a current of a distribution network(20). A data storage module(300) stores an electricity value measured in a previous time frame of the main processor as an electricity value of a current time frame. A control module(400) compares electricity values stored in current time fames of the main processor, the sub processor, and the data storage module with each other. The control module determines the malfunction of the main processor and the sub processor according to the comparison result. [Reference numerals] (110,210) Voltage detecting unit; (114) Main processing unit; (120,220) Current detecting unit; (130,230) A/D converter; (142,240) Signal calculating unit; (150) Main memory; (160) Display unit; (170) Communication device; (20) Distribution network; (250) Sub memory; (300) Data storage module; (400) Control module
Patent KR-20120114112-A (KR)
Title: Processes for manufacture of anhydrous hydrazine or derivatives of the same
Inventor: HUR NAM HWI
IPC: C07C241/02
Filed: 2011-04-06
Abstract: PURPOSE: A manufacturing method of anhydrous hydrazine or the derivative is provided to have safe use condition and facilitate quantity adjustment. CONSTITUTION: A manufacturing method of anhydrous hydrazine or the derivative comprises a step of reacting hydrazine carboxylic acid or the derivative represented by chemical formula 1 or 2 with carbon dioxide adhesive. Here, R1-R3 respectively indicate H, one of aliphatic hydrocarbons substituted aliphatic hydrocarbons, substituted aliphatic hetero ring, substituted aliphatic carbon ring, substituted aromatic cycle, or substituted hetero aromatic ring having 1-30 carbons, aliphatic hydrocarbon including O, S, N or P, aliphatic carbon ring including O, S, N or P, aliphatic family hetero ring including O, S, N or P, aromatic family including O, S, N or P, or hetero aromatic ring including O, S, N or P.
Patent KR-20120116166-A (KR)
Title: Hydraulic pump integrated electric motor
Inventor: YEO DONG KEUN
IPC: F15B9/09
Filed: 2011-04-12
Abstract: PURPOSE: A hydraulic pump with an integrated electric motor is provided to improve the cooling effect of an electric motor by simultaneously cooling a rotator and a stator in the electric motor with using oil. CONSTITUTION: A hydraulic pump with an integrated electric motor comprises a hydraulic pump(11), an electric motor(12), a housing body(13), an oil cooling part(14), and a control box. The hydraulic pump forms hydraulic pressure in the hydraulic working oil. The electric motor converts electric energy to mechanical energy. The housing body has a receiving space for receiving the hydraulic pump and the electric motor together. A flow path for flowing hydraulic working oil is formed inside the housing body. The oil cooling part cools the hydraulic working oil. The control box is coupled to the housing body and controls the operation of the hydraulic pump, the electric motor, and the oil cooling part. Some of the hydraulic working oil flowing into the housing body flow into the electric motor.
Patent KR-20120119613-A (KR)
Title: A safty light-emitting indicator
Inventor: SHIN DONG SUB
IPC: E01F9/04
Filed: 2011-04-22
Abstract: PURPOSE: A safety light-emitting indicator for road is provided to prevent the reduction of light emitting effect due to dust contamination by employing a rotating dust blocking unit. CONSTITUTION: A safety light-emitting indicator for road comprises an indicator body(110), one of a reflective sheet and a luminescent lamp as a light emitting unit, and a rotating dust blocking unit which blocks the inflow of dust into the light emitting unit with air flow at the front side of the indicator body. The rotating dust blocking unit comprises a transparent rotating dust blocking plate(310) which discharge air from a light emitting unit receiving part with a centrifugal force and a driving motor(320) rotating the transparent rotating dust blocking plate.
Patent KR-20130027601-A (KR)
Title: Center plug with the chuckjaw of taper
Inventor: CHEON EUN SUN
IPC: B23B31/10
Filed: 2011-04-26
Abstract: PURPOSE: A center plug device using a taper chuck jaw is provided to permanently reuse, to facilitate to assemble, and to lower material costs. CONSTITUTION: A center plug device using a taper chuck jaw is composed to engage the center of a tailstock with a center hole in order to make a taper flange(11) push a taper chuck jaw(12a,12c). The taper chuck jaw housing(10) forms four holes at 90 degree intervals in the same location of the taper flange. A tab hole and a hole are inserted with four bolts(20) and are once more connected to nut. The taper chuck jaw housing and taper flange maintain an interval in between even on maximum advancing.