baber/WOPTO huggingface dataset:
Patent KR-20120103782-A (KR)
Title: 도금체 걸이를 포함하는 산업용 탈수기
Inventor: SEO JAE HYUN
IPC: C25D21/00
Filed: 2011-03-11
Abstract: 본 발명은 각종 산업 현장에서 생산되는 제품 중 탈수를 필요로 하는 제품의 세척수를 탈수하는 산업용 탈수기에 관한 것이다. 
본 발명은 생산 현장의 바닥에 놓여지는 기체(機體)(10)의 상면 4개소에 결합플랜지(12)를 매개로 고정설치되어진 다리(11) 상부에 형성된 진동흡수부재설치블럭(13)에 진동흡수부재(40)가 설치되어지되, 상기 진동흡수부재설치블럭(13)에 수평 진동을 받아주는 수평진동흡수와셔(43)와 받침와셔(42)로 이루어진 디스크를 개입하여 스프링바(41)가 설치되어지고, 상기 스프링바(41)에 외부공기 유입이 가능하도록 공기유입구(27)와 겉통(25)을 구비한 물받이(21)의 스프링바체결브라켓(21a)이 조립되어 스프링바(41)에 끼움 고정되어지는 고정핀(46)에 의해  조립 유지되어지며, 상기 겉통(25)의 내부에는 구동모터(50)의 동력에 의해 회전하는 회전축(24)과 연동하도록 드럼통(26)이 설치되어 있고, 상기 드럼통(26)의 상부에 대하여 이격되어지도록 설치되어 뚜껑개폐실린더(70)의 전,후진 작동에 의해 상,하 방향으로 개폐되는 뚜껑(60)으로 이루어진 산업용 탈수기에 있어서, 상기 드럼통(26)의 상연부 내측에 거치바(110)가 형성되어 있되, 상기 거치바(110)에는 도금체를 가지런히 정열 거치할 수 있도록 된 도금체 걸이(210)의 몸체(211) 상부에 걸고리(213)가 안착 됨과 동시에 버팀지지가 가능하도록된 걸이용그립(111)이 형성되어 있는 도금체 걸이를 포함하는 산업용 탈수기에 의하여 달성될 수 있는 것이다.
Patent KR-20110104900-A (KR)
Inventor: MATSUDA KUNIHIRO
IPC: H01L51/50
Filed: 2011-03-16
Abstract: 본 발명은 안정된 특성의 화소 회로 기판을 제공하기 위해, 화소 전극과, 화소 전극의 일변측에 접속된 제 1 구동 소자와, 제 1 구동 소자와 병렬로 접속되는 동시에, 화소 전극의 일변측과 대향하는 타변측에 접속된 제 2 구동 소자를 구비하는 화소 회로 기판, 표시 장치, 전자 기기, 및 화소 회로 기판의 제조 방법을 제공한다. 
본 발명에 의하면, 안정된 표시 특성을 실현할 수 있다.
Patent KR-20110040808-A (KR)
Title: Substrate processing apparatus
Inventor: ITO TAKESHI
IPC: H01L21/3065
Filed: 2011-03-23
Abstract: PURPOSE: A substrate processing apparatus is provided to prevent particles from falling on a substrate from a rectification member, thereby preventing the substrate from being contaminated. CONSTITUTION: A mounting table(3) is installed on the bottom part of a chamber(2). A glass substrate is mounted on the mounting table. The mounting table comprises a metal base plate(5), an electrostatic chuck(6), a shield ring(7), and an insulating ring(8). The electrostatic chuck suctions a glass substrate placed on a convex part(5a) of a base plate. An elevation pin(10) loads or unloads the glass substrate. A power supply line(12) is connected to the base plate of the mounting table and supplies high frequency power.
Patent KR-20110040809-A (KR)
Title: Method for producing grass having dwarfism
Inventor: BAE TAE WOONG
IPC: A01H1/00
Filed: 2011-03-28
Abstract: PURPOSE: A method for producing dwarfism-induced grass is provided to reduce weeding work and to reduce labor. CONSTITUTION: A method for producing dwarfism-induced grass comprises: a step of treating gamma ray 60Co to flowers of grass at 10-50 GY; a step of cultivating gamma ray-treated grass and collecting seeds; and a step of seeding the seeds and selecting dwarfism-induced grass. The grass is Zoysia spp., Zoysia japonica, Zoysia matella, Zoysia tenuifolia, Zoysia macrotachya, or Zoysia sinica.
Patent KR-20120110784-A (KR)
Title: A window glass printing device
Inventor: KIM YOUNG SU
IPC: B41F17/00
Filed: 2011-03-30
Abstract: PURPOSE: A window glass printer is provided to print a large amount of printed matters in short time because printing is automatically performed while the printed matters are moved. CONSTITUTION: A window glass printer comprises a printing unit, a strickle board unit, and a supplying unit. The printing unit is installed in a body(110) of a printer. The strickle board unit is installed on the top of a work table of the printer. The supplying unit is installed in the work table so that the printed matters are supplied to the supplying unit.
Patent KR-20120116572-A (KR)
Title: The image which has spatial information creates and the system which remakes and the image creation remaking method
Inventor: KIM SUN JONG
IPC: H04N13/00
Filed: 2011-04-13
Abstract: PURPOSE: A system capable of reproducing and creating images including space information and image creation playback method thereof are provided to actively output images according to the view angle of a viewer in a real space. CONSTITUTION: A collected information reprocessing unit(70) matches GIS(Geographic Information System) information data, defense information data, location information data, and time information data on fish eye image information data decoded by a collected information decomposition unit(60). The collected information reprocessing unit processes the fish eye image information data to an image. The collected information reprocessing unit processes sound data to a three dimensional sound source. A playback unit(80) reproduces the image processed by the collected information re processing unit and the three dimensional sound source using a playback system. [Reference numerals] (10) Image information collection unit; (20) Space information collection unit; (21) Azimuth sensor; (23) Timer; (30) Sound effect information collection unit; (40) Collected information processing unit; (50) Collected information storage unit; (60) Collected information decomposition unit; (70) Collected information re-processing unit; (80) Playback unit; (81) View coordinate detection apparatus; (82) Image output apparatus; (83) Screen; (84) Surround speaker; (AA) Microphone
Patent KR-20120001596-A (KR)
Title: Positive photosensitive resin composition
Inventor: LI YEN CHENG
IPC: G03F7/022
Filed: 2011-04-29
Abstract: PURPOSE: A positive photo-sensitive resin composition for a semi-additive process is provided to improve the resistance of the composition with respect to electroplating. CONSTITUTION: A positive photo-sensitive resin composition includes 20-40 weight% of an alkali soluble phenol resin, 5-20 weight% of an alkali soluble acryl resin, 1-15 weight% of a quinine diazide containing a photo-sensitive compound, and a solvent based on the total weight of the composition. The average molecular weight of the alkali soluble phenol resin is between 8000 and 30000. The average molecular weight of the alkali soluble acryl resin is between 5000 and 55000.
Patent KR-20120000495-A (KR)
Title: Electron donating polymer and organic solar cell including the same
Inventor: CHOI YEONG SUK
IPC: C08G75/06
Filed: 2011-05-03
Abstract: PURPOSE: An electron donor polymer is provided to absorb the light of a wide wavelength area and increase inter-chain interactions, thereby improving hole mobility. CONSTITUTION: An electron donor polymer comprises a repeating unit A containing a repeating unit in chemical formula 1, and at least one repeating unit among compounds in chemical formula 2-4. An organic solar cell comprises: an anode and a cathode facing each other; and a photo-active layer between the cathode and the anode, comprising an electron donor and electron acceptor. The electron donor comprises a electron donor polymer.
Patent KR-20120125012-A (KR)
Title: Nuclear reactor
IPC: G21C11/08
Filed: 2011-05-06
Abstract: PURPOSE: A nuclear reactor is provided to improve cooling capability of a nuclear reactor external wall by preventing a film formed on a nuclear reactor external wall. CONSTITUTION: A container(100) is formed into a coupling structure of a hemispheric shape. The container accommodates core melt(110) in a lower part. A thermal shielding body(200) covers an external wall of the container. A nuclear reactor cavity(300) includes thermal shielding and the container. A partition wall(230) is formed from the thermal shielding body to the exterior wall of the container. The partition wall is formed with the exterior wall of the container. A guide wing(120) is formed between the partition walls.
Patent KR-20120134286-A (KR)
Title: 펜 컴퓨팅 전용펜과 펜 컴퓨팅 입력 장치를 사용한 온라인 전자문제집 시스템 및 그 방법
Inventor: CHONG IL HUN
IPC: G06F3/033
Filed: 2011-06-02
Abstract: 본 발명은 펜 컴퓨팅 전용펜과 펜 컴퓨팅 입력 장치를 사용한 온라인 전자문제집 시스템 및 그 방법에 관한 것으로, 회원 정보를 입력받고, 전자문제집 콘텐츠 사용료의 결제후 사이버머니를 발급하고, 유무선 네트워크(WiFi, Wibro, 인터넷) 상의 사이버서점의 과목별 학습자료, 언어별 학습 자료, 참고서, 사전, 자격증 시험, 문제집 등 디지털 저작권(Watermarking, DRM)이 포함된 전자문제집 콘텐츠를 휴대용 단말기의 전자문제집 클라이언트로 제공하고, 전자문제집의 문제풀기, 답안 마킹, 자동채점, 오답확인, 오답노트 작성 및 다시 보기, 스코어관리, 리셋 및 다시풀기, 언어별 Listening/Speaking 시험(듣기평가/필기 및 작문), 전용 펜과 전자잉크 디스플레이를 사용한 주관식 필기 및 작문 시험, 사전기능, 외국어 시험의 경우 언어별 텍스트의 TTS 기능으로 음성 스트리밍 서비스를 제공하고, 언어별 회화 시험시 시험응시자의 음성 녹음 및 전송, 채점 기능을 제공하는 전자문제집 서버; 및 전자문제집 서버와 클라이언트 사이의 전자문제집 판매 및 구매 거래를 공인인증서로 인증하는 인증 서버를 포함하고, 휴대용 단말기는 노트북, Tablet PC, WiBro 단말기, iPAD 단말기, e-book 단말기 중 어느 하나의 단말기를 사용하며, 통신망 모뎀(WiFi 모뎀, WiBro 모뎀, VDSL 모뎀)이 장착되고, 전용 펜의 활자를 인식하는 펜 컴퓨팅 입력장치와 연결되며, 전자문제집 클라이언트를 설치한다.
Patent KR-20130000052-A (KR)
Inventor: YOU HYEO SANG
IPC: F03B17/02
Filed: 2011-06-22
Abstract: PURPOSE: A power generation system using a swell is provided to convert the movement of a buoyancy plate into electricity by a mechanism as the buoyancy plate moves on the swell. CONSTITUTION: A power generation system using a swell comprises a main shaft(1), a main shaft cylinder(2), an auxiliary cylinder, a buoyancy plate(3), and a hydraulic device chamber(4). The main shaft comprises a main shaft fixing plate and a main shaft end fixing plate. The main shaft cylinder is inserted into a square pipe, and assembled or disassembled by bolts. One end of the auxiliary cylinder is fixed to a main shaft piston, and the other end is fixed to the buoyancy plate by free rotating bearings. A round roller, an impurity removing plate, and a spring are installed at the center of the buoyancy plate. The hydraulic device chamber is formed on the main shaft piston.
Patent KR-20120002458-A (KR)
Title: An assembly type pot
Inventor: KIM YOUNG HA
IPC: A01G9/02
Filed: 2011-06-28
Abstract: PURPOSE: A prefabricated flowerpot is provided to easily supply water in a water container to roots of a plant planted in the flowerpot using a wick formed with a water absorption property. CONSTITUTION: A prefabricated flowerpot comprises the following: a flowerpot body(10) including a drain hole(11) on the bottom; a water container(20) located on the bottom of the flowerpot body; a wick(30) formed with a material capable of the water absorption for supplying water in the water container into the flowerpot body; a lower unit(31) connected to the water container for absorbing the water; a middle storage unit(33) located on the lower unit for storing the absorbed water; and an upper end unit(32) draining the stored water into the flowerpot body.
Patent KR-20130009368-A (KR)
Title: Apparatus and method for protecting led panel over voltage
Inventor: PARK JUNG BAE
IPC: H05B37/02
Filed: 2011-07-15
Abstract: PURPOSE: An overvoltage protection device of an LED panel and a protection method thereof are provided to prevent a heat detection prevention phenomenon from being generated by an increase in temperature of a chip by setting OVP(Over Voltage Protection) according to a reference voltage and a setting voltage. CONSTITUTION: An LED string is combined with an LED panel(110). A DC/DC converter supplies an operating voltage to an end of the LED string. An open string monitoring unit(143) monitors each LED string is opened or not. A DC/DC control unit controls an output voltage of the DC/DC converter to normally supply an LED operating current to the LED panel. A comparer(160) compares a contact point voltage with a setting voltage higher than a reference voltage of a monitoring unit(152).
Patent KR-20130009417-A (KR)
Title: The light emitting device package and the method for manufacturing the same
Inventor: BAE SEOK HUN
IPC: H01L33/62
Filed: 2011-07-15
Abstract: PURPOSE: A light emitting device package and a manufacturing method thereof are provided to form a protrusion for a solder on a pad and to maintain the distance between the solder and a light emitting structure. CONSTITUTION: A device pad(160) is formed in the upper part of a light emitting structure(50). A projection(170) is formed on a device pad. A solder ball is formed on the projection. An insulating substrate exposes the upper side of the solder ball. A substrate pad(186) covers the upper side of the solder ball.
Patent KR-20130014935-A (KR)
Title: Raw rice wine rice steamed dish system
Inventor: PARK JONG GUN
IPC: C12G3/02
Filed: 2011-08-01
Abstract: PURPOSE: A steaming apparatus of brewing rice for makkoli(Korean rice wine) is provided to uniformly stir wheat flour dough using a stirring arm and a stirring wing. CONSTITUTION: A steaming apparatus of brewing rice for makkoli comprises: a cylindrical chamber(1) which comprises a steam pipe(7) and a drain pipe(8) on the bottom, a perforated board(6) in the inside, and a cover(3) in the upper opening part; a stirring device(11) which is placed on the bottom of the perforated board and has a stirring arm(12) and a stirring wing(13); a driving device(16) with a decelerator(17) and a motor(18); a support box(15) which is placed inside a chain gear; and an elevating device(19) which lowers and lifts the stirring device.
Patent KR-20130016756-A (KR)
Title: Functional cinerary urn
Inventor: PARK SANG BUM
IPC: A61G17/007
Filed: 2011-08-09
Abstract: PURPOSE: A functional cinerary urn of a Korean-style house window shaped is provided to keep remains in an optimal environment and to prevent the decomposition and the corruption of the remains by preventing the generation of microorganism and mold. CONSTITUTION: A functional cinerary urn of a Korean-style house window shaped comprises an outer box(10), an inner box(20), an internal member(30), an inner lid(40), and an outer lid(50). The outer box is formed into a rectangular shape by connecting four lateral members(11) and has an opened top. The inner box is insert-installed inside the outer box and has an opened top. The inner box is formed of an artificial wood material. The internal member is installed inside the inner box and comprises charcoal. The inner lid is installed to cover the opened top of the inner box, and an internal member including the charcoal is attached to an inner side of the inner lid. The outer lid is seat-installed to be put on the opened top of the outer box and the top of the inner lid, thereby preventing the separation of the inner lid.
Patent KR-20130017674-A (KR)
Title: 수평 적층식 발파층을 이용한 터널 발파 방법
Inventor: KIM EUN GWAN
IPC: F42D1/08
Filed: 2011-08-11
Abstract: 본 발명은 터널 하부에 수평방향으로 복수의 발파공을 형성하는 제1발파공 형성 단계; 상기 제1발파공의 상부에 수평방향으로 복수의 발파공을 순차적으로 형성하는 제2발파공 형성 단계; 및 상기 제1발파공을 먼저 기폭시킨 후, 상기 제2발파공을 하부에서부터 순차적으로 기폭시키는 기폭 단계를 포함하는 것을 특징으로 하는 수평 적층식 발파층을 이용한 터널 발파 방법에 관한 것으로서, 터널의 바닥 부분부터 발파를 시작함으로써 상부의 암반에 의해 발파 소음, 진동 및 암석의 비산을 효과적으로 방지할 수 있다.
Patent KR-20130020009-A (KR)
Title: Shelter device for height work
Inventor: CHOI JAE YANG
IPC: E04G3/30
Filed: 2011-08-18
Abstract: PURPOSE: A lifting platform is provided to efficiently and safely work at high places and to reduce the period of working at the high places. CONSTITUTION: A lifting platform comprises a gondola(110), a side frame, and a side frame member(120). The gondola is lifted by a first cable(112) connected to a support(111) of a hull block and is arranged in the side frame. The side frame is lengthily formed in the vertical direction of the hull block to seal three sides except a side facing the hull block. The side frame member is installed in parallel to the side frame and comprises a support frame for supporting the side frame.
Patent KR-20130026144-A (KR)
Inventor: KIM JONG SU
IPC: H01L21/52
Filed: 2011-09-05
Abstract: PURPOSE: A collet assembly for attaching a semiconductor die is provided to reduce interruption time by inserting a collet axis to a collet axis adapter to simply fix the collet without a screw. CONSTITUTION: A collet(130) absorbs a semiconductor die under vacuum and transfers the semiconductor die to the upper side of a package substrate. The collet is fixed to the lower side of a collet axis(110). A collet axis adapter(120) is combined with the upper side of the collet axis. The collet axis adapter includes a top adapter(124) and a bottom adapter(122). A magnetic member(140) fixes the collet axis to the collet axis adapter with a magnetic force. The magnetic member includes a first magnetic element(142) arranged in the collet axis and a second magnetic element(144) received in the collet axis adapter.
Patent KR-20130026646-A (KR)
Title: Touch based mobile terminal and method for controlling soft keyboard in touch type mobile terminal
Inventor: YEON JU EUN
IPC: G06F3/048
Filed: 2011-09-06
Abstract: PURPOSE: A mobile terminal based on touch and a soft keyboard control method in the mobile terminal based on touch are provided to supply an intuitive interface to a soft keyboard, thereby increasing user convenience. CONSTITUTION: A display unit(110) includes a touch function. A control unit(120) displays one unit keyboard among unit keyboards of a soft keyboard on a keyboard area of the display unit. When swipe is sensed in the keyboard area, the control unit moves the unit keyboard to other keyboards by determining a swipe direction based on a touch state and displays other keyboards on the keyboard area. The control unit determines the touch state and the swipe direction by using a key coordinate value of a touch start location and a key coordinate value of a touch release location. [Reference numerals] (110) Display unit; (120) Control unit; (121) Keyboard movement command identifying unit; (122) Keyboard display management unit; (130) Storage unit
Patent KR-20130027827-A (KR)
Title: Shackle assembly
Inventor: YOO JONG NAM
IPC: B66C1/34
Filed: 2011-09-08
Abstract: PURPOSE: A shackle assembly is provided to be quickly and safely dismantled even through workers do not climb to the top of a large structure. CONSTITUTION: A shackle assembly comprises a shackle(110), a bolt member(120), a rope for dismantling a bolt(140), a bolt drop preventing unit(130), a nut member(150), a rope for dismantling a nut(170), and a nut drop preventing unit(160). The shackle moves in a state of being hung on a main wire(101) installed on a device for moving a heavy object. The bolt member is coupled to the opening end of the shackle. The rope for dismantling the bolt is connected to the bolt member and is extended to the ground. The bolt drop preventing unit connects the bolt member and the main wire to prevent the drop of the bolt member. The nut member is spirally coupled to the bolt member to prevent the separation of the bolt member. The rope for dismantling the nut is connected to the nut member and is extended to the ground. The nut drop preventing unit connects the nut member and the main wire to prevent the drop of the nut member.
Patent KR-20130034184-A (KR)
Title: Shroud nozzle for continuous casting
Inventor: KI WOONG GAN
IPC: B22D11/10
Filed: 2011-09-28
Abstract: PURPOSE: A shroud nozzle for continuous casting is provided to prevent the outflow of molten steel through the eroded and bored portions of a shroud nozzle by being formed of a metal material to increase durability. CONSTITUTION: A shroud nozzle for continuous casting comprises a metal nozzle part(100) and one or more cooling water passages(110). The nozzle part is detachably installed in the lower part of a ladle and guides molten steel discharged from the ladle to a tundish. The cooling water passages are installed inside the nozzle part to pass cooling water. The cooling water passages are a circular coil-shaped space or a cylindrical space. [Reference numerals] (AA) Control part; (BB) Drain tank; (CC) Water supply tank;
Patent KR-20130034695-A (KR)
Inventor: KIM SANG BO
IPC: H02N11/00
Filed: 2011-09-29
Abstract: PURPOSE: A gauss generator is provided to secure an environment-friendly generator using a permanent magnet and a superconductor. CONSTITUTION: A functional non-magnetic metal layer is combined with the pole part of a permanent magnet(3). A functional metal attachment permanent magnet is adhered to a circular plastic rotation plate(2). A bearing attachment hole is formed at the center of a permanent magnet attachment rotation plate. A lower bottom support unit attaches a lower plastic bottom plate to a support unit. A bearing(7) is fixed by combining a nut with a bolt of the support unit. [Reference numerals] (1) Upper cover; (10) Current induction coil; (11,12) Tightening nut; (13) Upper nut; (14) Lower nut; (15) 3,4 attachment drawing; (16) A bolt; (2) Rotary plate; (3) Permanent magnet; (4) Particle lens film; (5) 2,3,4 attached rotary plate drawing; (6) Fixed plate ring; (67) B bolt; (7) Bearing; (8) Fixed needle; (9) Lower fixing plate; (AA) A steel ring; (BB) 4 nut; (CC) B steel ring; (DD) B nut;
Patent KR-20130039043-A (KR)
Title: Clamp of attachment
Inventor: HAN YUNE KYU
IPC: E02F9/24
Filed: 2011-10-11
Abstract: PURPOSE: A clamp for an attachment including a dual safety device is provided to doubly prevent an attachment from being separated due to damage of a first hydraulic cylinder during operation. CONSTITUTION: A clamp for an attachment including a dual safety device comprises a first hydraulic cylinder(121) and a second hydraulic cylinder(40). The second hydraulic cylinder and a cylinder rod are included at one side of a movable hook(120), and a penetration hole(122) and a connection hole(500) are included at the other side of the movable hook. The movable hook is connected to a connection pin by operation of the first hydraulic cylinder. A cylinder rod(400) is drawn from the second hydraulic cylinder, and penetrates the penetration hole to be connected to a lower body(50).
Patent KR-20130043536-A (KR)
Title: Rear obstacle sensor of vehicles that use tilt sensor
Inventor: PARK YEONG JUN
IPC: B60R21/00
Filed: 2011-10-20
Abstract: PURPOSE: A device for sensing a rear obstacle of a vehicle using an inclination sensor is provided to prevent obstacle sensing error when parking or reversing the vehicle and to prevent the rear side of the vehicle from crashing to the obstacle. CONSTITUTION: A device for sensing a rear obstacle of a vehicle using an inclination sensor comprises a rear sensor module(10), an inclination sensor module(20), an alarm output unit(30), and an alarm output control unit(40). The rear sensor module is mounted to the rear side of the vehicle. The inclination sensor module senses instantaneously inclination of the vehicle when the vehicle passes through a hill. The alarm output unit outputs the alarm according to a signal sensed. The alarm output control unit controls the alarm output of the alarm output unit without pausing when the instantaneously inclination sensing signal is input. [Reference numerals] (10) Rear sensor module; (20) Inclination sensor module; (30) Alarm output unit; (40) Alarm output control unit;
Patent KR-20120046040-A (KR)
Title: Camera lens structures and display structures for electronic devices
Inventor: MATHEW DINESH C
IPC: G06F1/16
Filed: 2011-10-26
Abstract: PURPOSE: A camera lens structure and a display structure for an electronic device are provided to include display layers such as a polarizer layer, a color filter layer, and a thin film transistor layer. CONSTITUTION: A display(14) has layers. A camera(22) includes a lens structure and an image sensor. The image sensor receives image light through lens structures. Lens structures include first and second parts. One or more layer is allowed to layers of the display between the first part and the second part of lens structures.
Patent KR-20130046009-A (KR)
Title: Apparatuses for driving traction electromotor commutator
Inventor: KIM YOUNG CHOUL
IPC: H02P25/10
Filed: 2011-10-27
Abstract: PURPOSE: A diesel locomotive traction motor commutator driving device is provided to prevent generation of flashover occurring in a traction motor by repairing an invisible part of a commutator. CONSTITUTION: An electronic contact unit(110) controls supply of external AC power. A transformer(120) transforms the external AC power into internal AC power and outputs the internal AC power. A main rectifier(130) rectifies the internal AC power into internal DC power and outputs the internal DC power. A power contact unit(150) receives the internal DC power and supplies current to a traction motor. A cable(160) receives the internal DC power from the power contact unit and supplies current to the traction motor. A manipulation unit(170) manipulates operation of the traction motor. A control rectifier(140) rectifies the external AC power into DC power for supplying DC power to the manipulation unit.