baber/WOPTO huggingface dataset:
Patent KR-20090028987-A (KR)
Title: Photovoltaic device and preparing method thereof
Inventor: LEE MOON JAE
IPC: H01L31/04
Filed: 2007-09-17
Abstract: A photovoltaic device and a manufacturing method thereof are provided to improve photovoltaic efficiency by using a plurality of photovoltaic device layers divided according to an absorption band. A photovoltaic device(1) includes a transparent electrode(12), a metal electrode(16), and a plurality of photovoltaic device layers(14). The transparent electrode is faced with the metal electrode. A plurality of photovoltaic device layers is positioned between the transparent electrode and the metal electrode. Each photovoltaic device layer includes an optical absorption compound and electron acceptor material. In the photovoltaic device layer, a first photovoltaic device layer(14a) including a short wavelength absorption compound is positioned in a transparent electrode side and a second photovoltaic device layer(14b) including a long wavelength absorption compound is positioned in a metal electrode side. Thickness ratio of the first photovoltaic device layer and the second photovoltaic device layer is 1:1 ~ 1:3. The short wavelength absorption compound absorbs wavelength of 400 ~ 600nm.
Patent KR-20080027168-A (KR)
Title: Reproducing apparatus, reproducing method, and reproducing program
Inventor: MUKAIYAMA RYO
IPC: G11B20/10
Filed: 2007-09-20
Abstract: A reproducing device, a reproducing method and a reproducing program are provided to switch a first piece of content to another one by inputting a content switching command, thereby improving convenience in reproducing contents. A reproducing device(10) comprises a content storage unit(15), an input unit, a reproducing unit(16), and a control unit(12). The content storage unit stores content and attribute information by relating with each other. The input unit enters a command. The reproducing unit reproduces content. The control unit controls the reproducing unit to switch at lest one piece of content related with a first piece of content generated on the basis of attribute information of the first piece of content to another piece of content belonging to related list information when a content switching command is entered during reproduction of the first piece of content.
Patent KR-20080101627-A (KR)
Title: Apparatus for optical inspection
Inventor: CHOI HYUN HO
IPC: G01J1/02
Filed: 2007-09-20
Abstract: An optical checking apparatus can prevent distortion due to bending of imaging area of an inspection object and obtain an image with stable focus. An optical checking apparatus comprises a stage(100) in which an inspection object is placed, a rectilinear moving unit(200) moving the stage back and forth, an imaging unit(300) taking a picture of the inspection object placed in the stage, an illumination unit(400) irradiating the light to the inspection object, and a rolling member(500) supporting the edge of the area photographed by the imaging unit in order to maintain the flatness of the imaging area.
Patent KR-20070112086-A (KR)
Title: An agent comprising fgf2 as an effective ingredient for treatment or prevention of asthma and chronic obstructive pulmonary disease
Inventor: KIM YOON KEUN
IPC: A61P11/06
Filed: 2007-09-21
Abstract: An agent comprising an FGF2(fibroblast growth factor-2) is provided to usefully used for treating or preventing fibrosis, airway inflammation, airway sensitivity, airway remodeling, asthma and chronic obstructive pulmonary disease(COPD) and an asthma and COPD animal model developed by using ovalbumin and double-strand RNA is provided. An agent for preventing or treating asthma comprises an FGF2 as an effective ingredient, wherein the asthma is induced by the over-expression of IL-13(Interleukin-13) or IFN-gamma(Interferon-gamma) and the FGF2 inhibits the expression of the IL-13 or vascular endothelial growth factor(VEGF).
Patent KR-20090031086-A (KR)
Title: System for supplying power
Inventor: JUNG BYUNG KWON
IPC: H02M3/04
Filed: 2007-09-21
Abstract: A power supply system is provided to reduce power consumption of a power supply by generating one DC power voltage from the power supply. A power supply system(100) comprises a power supply(110) and a plurality of voltage control units(120, 130, 140). The power supply generates a first DC voltage. A plurality of voltage control units converts the first DC voltage, and generates a second voltage. Each voltage control unit supplies the second DC voltage to each electronic module, and includes a control signal generating part, a DC/AC conversion part, a transformer, and an AC/DC conversion part. The control signal generating part generates a first voltage conversion control signal and a second voltage conversion control signal. The DC/AC conversion part converts the first DC voltage into an AC voltage according to the first voltage conversion control signal and the second voltage conversion control signal. The transformer transforms the AC voltage converted by the DC/AC conversion part. The AC/DC conversion part converts the AC voltage converted by the transformer into a second DC voltage.
Patent KR-20080029897-A (KR)
Title: Polymer electrolyte secondary battery
Inventor: YAMASAKI MIKIYA
IPC: H01M50/55
Filed: 2007-09-28
Abstract: A polymer electrolyte secondary battery is provided to ensure excellent electrolyte retaining performance, cycle characteristic, and safety upon overcharging. A polymer electrolyte secondary battery is a non-aqueous electrolyte secondary battery having a positive electrode(9), a negative electrode(10), and a polymer electrolyte. The polymer electrolyte comprises a polymer, a non-aqueous solvent, and a lithium salt. The non-aqueous solvent includes at least any one of ethylene carbonate and propylene carbonate, wherein the total volume ratio of ethylene carbonate and propylene carbonate in the non-aqueous solvent is 60% or more. The polymer is a copolymer of monomer containing N,N-dimethylacrylamide and a compound having at least three acrylate groups and/or methacrylate groups. A ratio of the compound in the total monomer is 10-30wt%. A ratio of the polymer in the polymer electrolyte is 1.0-2.0wt%.
Patent KR-20090014927-A (KR)
Title: Method and apparatus for reproducing stereoscopic image using depth control
Inventor: KOO JAE PHIL
IPC: G02B27/22
Filed: 2007-09-28
Abstract: A method and an apparatus for reproducing stereoscopic image are provided to control depths of objects and allow a computer to read a program for executing the method. Information about parallax at a left-eye image and a right-eye image of objects included in stereoscopic image is generated in accordance with stereo camera parameters of stereoscopic image. A depth at the stereoscopic image of the objects is controlled on the basis of the generated information. The stereoscopic image is reproduced in accordance with the controlled depth.
Patent KR-20090035381-A (KR)
Title: Secure user session managing method under web environment and recording medium recorded program executing it
Inventor: NYANG DAE HUN
IPC: G06F17/00
Filed: 2007-10-05
Abstract: A user session managing method and a recording medium recording a program by using an authentication algorithm of trial-response method on web are provided to protect the session of the user by applying authentication algorithm to HTTP(HyperText Transfer Protocol). A server calculates a first server authentication value by using a sharing key stored in a server and random number(S11). The server newly produces the random number. The server uses the shared key stored in the random number and server and the second server authenticator is calculated(S15). The server including random number transmits the HTTP response to the client. The HTTP request including server is the cookie from the client is received. The cookie comprises the client authentication value. By using the random number included in the shared key stored in client and the HTTP response which client is transmitted, the client authentication value is calculated.
Patent KR-20080035469-A (KR)
Title: Reflective mask blank for exposure, reflective mask for exposure, semiconductor device manufacturing method, and substrate with multilayered reflective films
Inventor: SHOKI TSUTOMU
IPC: G03F1/24
Filed: 2007-10-17
Abstract: A reflective mask blank for exposure, a reflective mask for exposure, a semiconductor device manufacturing method, and a substrate with multilayered reflective films are provided to make a surface of the mask plane and achieve pattern transfer without causing the distortion of pattern with high accuracy, by forming a surface to be attracted by an electrostatic chuck to have a convex. A reflective mask blank(10A) for exposure comprises a substrate(1), multilayered reflective films(2), and an absorbent layer(4). The multilayered reflective films are formed on the substrate. The absorbent layer is formed on the multilayered film to absorb exposure light. An opposite surface of a pattern-forming surface, has a convex having a flatness within a range of 50nm to 1000nm.
Patent KR-20090040758-A (KR)
Title: Method for tagging video and apparatus for video player using the same
Inventor: CHOI SEUNG EOK
IPC: G06V10/772
Filed: 2007-10-22
Abstract: An image tagging method and a video reproduction apparatus using the same are provided to tag and search a desired moving picture according to the preference and intention of a user from various and vast video contents. According to the kind of a video reproduction apparatus(100), a reproducing module(120) receives a video signal and converts it so that a display device(180) can reproduce it. The reproducing module converts/reproduces stored video files. A face recognition module(130) recognizes the face(185) of a character in a scene which is being reproduced by the reproducing module. A tag module(110) receives a tagging key of an input unit(170) for tagging the character in the moving picture, and maps the inputted tagging key to the recognized face image. A storage module(140) stores the mapping result.
Patent KR-20090041190-A (KR)
Title: Auto machine having gas sensor
Inventor: HA KYUNG II
IPC: G07F19/00
Filed: 2007-10-23
Abstract: An ATM(Automated Teller Machine) having the gas sensor can inform the fire station or the police station of the detection result of poisonous gas by using the wire/wireless communications network. The ATM comprises the gas detection means(80), the warning measure(85), and the communications means(70) and controller(90). The gas detection means is mounted on the fixed position of ATM. The gas detection means detects the poisonous gas. The warning measure informs the detection result of the gas detection means to outside. The warning measure is made of the speaker, and the display device and lamp. The controller controls the gas detection means, and the warning measure and communications means.
Patent KR-20090042632-A (KR)
Title: A quantitative analysis method of heteronuclear-materials by using nuclear magnetic resonance spectroscopy
Inventor: LEE SUEG GEUN
IPC: G01N24/08
Filed: 2007-10-26
Abstract: A quantitative analysis method of hetero-nuclear materials by using nuclear magnetic resonance spectroscopy is provided to obtain accurate data by preventing an error in the measurement result caused by pre-processing. A quantitative analysis method of hetero-nuclear materials by using nuclear magnetic resonance spectroscopy comprises a step of obtaining a reference signal used as a reference peak by applying the specific frequency of a hetero-nuclear material, an analysis object, to a proton coil for the pseudo-FID(Free Induction Decay) acquisition time; a step of obtaining a measurement signal used as a measurement peak of the hetero-nuclear material; and a step of quantifying the concentration of the hetero nucleus by comparing the reference signal and the measurement signal. The method does not include a preprocessing step of the analysis object.
Patent KR-20090043278-A (KR)
Inventor: KIM KYUNG HO
IPC: F16F9/34
Filed: 2007-10-29
Abstract: 본 발명은 댐퍼장치에 관한 것으로, 댐핑 속도가 일정하여도 진폭의 크기에 따라 댐핑력이 상이하게 발생되도록 하여 감쇠 범위를 확장시켜 널리 범용적으로 적용시킬 수 있고, 구조도 간단하여 간단하게 제작할 수 있을 뿐만 아니라 저렴하게 구성할 수 있도록 다수개의 오리피스 홀이 형성된 피스톤에 가해지는 진폭의 크기에 따라 상기 오리피스 홀과의 갭의 크기가 가변되어 상기 오리피스 홀의 전체 면적을 조절하는 조절판을 구비하고 있다. 
       
     조절판, 오리피스 홀, 스프링
Patent KR-20090049803-A (KR)
Inventor: AN DUEK CHAN
IPC: F24D3/10
Filed: 2007-11-14
Abstract: 본 발명은 수도관의 밸브가 집합되어 있는 수도분배기용 커버에 관한 것으로, 더욱 상세하게는 다가구 주택 등과 같이 다수의 수도관이 배관되어 있는 곳에는 수도 연결관 분배를 위한 분배기가 설치되고, 이 분배기에는 수도공급과 온수공급의 제어를 위한 밸브와 계량기 및 분배기 등이 장착되어 있는바, 이 분배기를 주변의 오염물질로부터 보호하고, 겨울철 동파를 방지하기 위한 보온수단이 구비된 커버에 관한 것으로서, 측면판(3)과 후면판(4) 및 전면판(2)으로 구성된 통상의 커버(1)에 있어서, 상기 후면판(4)과 측면판(3)의 측면에 벨크로파스너(20)(20')를 각각 봉접하여 연결토록 구성하고, 상기 후면판(4)의 상단에는 투명한 소재의 전면판(2)은 봉접하여 고정하며, 상기 전면판(2)과 측면판(3)의 주연부에 슬라이드파스너(4)를 종접하여 서로 결합하도록 구성하며, 상기 측면판(3)에는, 중앙부에 다수개의 원형 절취부(8)를 형성하고, 그 일단을 끝부분까지 절결하여 절결부(9)를 구성하되, 상기 절결부(9)의 내부 양측에 벨크로파스너(10)(10')를 봉제 고정하여 밀폐토록 구성하며, 상기 후면부(5)에는 열선(7)을 내장하고, 온도감지센서(11)를 연결하여, 입력된 설정온도 이하로 내려가면 전원을 공급하도록 구성하여서 된 것이다. 
       
      벨크로파스너, 전면판, 후면판, 열선, 온도감지센서, 절결부, 절취부
Patent KR-20090050165-A (KR)
Inventor: OH DAL JIN
IPC: F02M35/024
Filed: 2007-11-15
Abstract: 본 발명은 자동차의 흡기계에 청정한 공기를 공급해 주는 에어클리너에 관한 것으로서, 더욱 상세하게는 엔진룸 내부의 열과 고무 특성에 의해 맞닿는 면이 서로 붙어 고착되는 현상을 방지할 수 있도록 한 자동차용 에어클리너의 시일구조에 관한 것이다. 
     이를 위해, 본 발명은 유입구가 형성된 바디부와, 배출구가 형성되고 바디부의 상부를 커버하는 커버부가 복수의 클램프에 의해 클램핑되어 체결되는 케이스; 상기 케이스의 내부 중간에 바디부와 커버부의 경계를 이루도록 설치되며, 여과엘리먼트가 내장된 엘리먼트프레임; 상기 바디부의 유입구를 통해 유입된 외기가 여과없이 상기 엘리먼트프레임의 테두리면을 통해 바로 커버부로 유입되지 않도록 상기 엘리먼트프레임의 테두리면에 삽입되는 고무패킹; 및 상기 고무패킹의 상부면과 하부면에 대칭으로 각각 형성된 제1기밀돌출부와 제2기밀돌출부를 포함하여 구성되고, 상기 바디부와 커버부의 클램핑에 의한 고무패킹 압착시 상기 제2기밀돌출부가 엔진룸 내부의 열에 의해 고무패킹의 몸체에 고착되지 않도록 고무패킹 몸체에 경사면을 형성한 것을 특징으로 하는 자동차용 에어클리너의 시일구조를 제공한다. 
       
     에어클리너, 바디부, 커버부, 여과엘리먼트, 고무패킹, 기밀돌출부
Patent KR-20090050433-A (KR)
Inventor: KOO JIN GUN
IPC: H01L29/78
Filed: 2007-11-15
Abstract: 본 발명은 고압 소자를 포함하는 반도체 회로의 제조 방법에 관한 것으로,  제1 실리콘 기판의 표면에 불순물을 이온 주입하여 딥 웰(deep n-well)을 형성하는 단계; 상기 불순물이 이온주입된 제1 실리콘 기판의 표면에 산화막을 형성하는 단계; 제2 실리콘 기판의 표면에 산화막을 형성하는 단계; 상기 제1 실리콘 기판의 산화막과 상기 제2 실리콘 기판의 산화막을 서로 밀착시킨 후 SOI(Silicon On Insulator) 본딩하여 상기 산화막들이 상기 제1 및 제2 실리콘 기판내에 매몰된 3층 구조를 가지는 SOI 기판을 형성하는 단계; 및 상기 딥 웰상에 고압 소자를 형성하는 단계를 포함하여 구성되며, 이에 의하여 반도체 회로의 제조 공정이 매우 단순화될 뿐 만 아니라 고압 소자의 항복 전압을 보다 용이하게 높여 줄 수 있게 된다.  
     
     고압소자, LDMOSFET, SOI
Patent KR-20080101634-A (KR)
Title: Multi punching machine
Inventor: LEE EUN CHANG
IPC: B27C3/04
Filed: 2007-11-20
Abstract: A multi punching machine is provided to perform a long time taking task within short time by removing unnecessary task and thus maximizing punching efficiency. A multi punching machine comprises at least roller installed at the bottom of the route that a workpiece(30); a stop plate(23) stopping the workpiece at the proper location; at least one fixing unit(20) holding the workpiece; an anchor plate(22) capable of being fastened tightly without being pushed any more at proper location; and at least one punching part(10) installed in order to punch a hole on the workpiece.
Patent KR-20090052577-A (KR)
Inventor: SEO NAM GIK
IPC: C21B7/12
Filed: 2007-11-21
Abstract: 차기 출선구를 미리 개공한 상태에서 용융물의 분출을 방지할 수 있도록 함으로써 출선작업의 지연을 최소화할 수 있도록, 현행 출선구를 통한 출선작업 중에 개공기로 차기 출선구를 굴착하는 단계와, 차기 출선구의 심도를 관통하는 단계, 차기 출선구로부터 용융물의 역류를 차단하며 대기하는 단계, 개공기를 피드백하여 차기 출선구를 개공하는 단계를 포함한다. 
       
     출선구, 비트, 탭핑바, 피트날개, 냉각수, 질소가스
Patent KR-20090052672-A (KR)
Inventor: HAN SAM HWA
IPC: B28B7/06
Filed: 2007-11-21
Abstract: 본 발명은 점토 벽돌의 표면 무늬 성형방법 및 그 성형장치에 관한 것으로 더욱 구체적으로는 원료를 선별, 배합, 숙성, 분쇄, 반죽하는 제토공정과, 제토공정에서 가공된 원료를 일정한 비율의 물과 반죽하여 진공 압출 후 원하는 형태의 제품을 만드는 성형공정과, 성형이 완료된 제품을 일정 폭으로 절단하는 절단공정과 소성을 위하여 제품에 첨가된 수분을 제거하는 건조공정과, 제품의 최대 강도를 부여하기 위하여 가열로에서 일정시간 열처리하는 소성공정을 순차적으로 실시하여 제조되는 점토 벽돌 제조 방법에 있어서,  
     상기 성형단계에서 압출금형(2)을 이용하여 벽돌을 압출할 때, 벽돌 표면 측에 표현하고저하는 무늬에 대응하도록 0.5 ~ 2.0mm의 돌출부(A1)를 일체로 형상하는 압출성형 단계와, 상기 압출물(A)에 형성된 돌출부(A1)에 절삭 성형날(5)을 접촉시켜서 압출물에 형성된 돌출부를 절삭 제거하여 돌출부상에 절삭 자욱에 의한 무늬를 형성하는 절삭무늬 성형단계를 거쳐 성형하고 이것을 공지의 수단으로 절단하여 그 상태로 건조시키고 소성시켜서 벽돌을 제조하는 제조방법과, 압출기(1)의 압출부 전면에 설치되는 압출금형(2)의 압출공(201) 내측면에 0.5 ~ 2.0mm의 깊이를 가지고  일정폭을 가지는 요입홈부(202)를 벽돌무늬 성형부에 형성하여 압출되는 점토벽돌의 표면에 절삭 자욱을 낼 수 있게 돌출부를 형성하는 성형장치를 통해 벽돌의 내구성이나 강도 저하 없이, 점토 벽돌의 표면에 매끈한 외표면과 절삭 자욱에 의한 꺼칠꺼칠한 외표면이 조화되어 새로운 무늬를 연출하는 점토 벽돌의 제 작이 가능케 한 것이다. 
       
     점토벽돌, 돌출부(A1), 무늬, 압출금형(2), 요입홈부(202)
Patent KR-20090053391-A (KR)
Inventor: LEE SANG YEUNG
IPC: B27B13/00
Filed: 2007-11-23
Abstract: 본 발명은 자동차 타이어 절단기용 띠톱에 관한 것으로, 띠톱날(1) 후측에 연삭숫돌(2)이 결합되고, 연삭숫돌(2)은 후측으로 갈수록 두껍게 형성된 것을 특징으로 하여, 기존의 거친 절단면을 매끈하게 만들어 스틸코드(Steel Cord)의 노출 및 날카로움을 감소시킴으로써 작업의 안정성을 향상시키고, 절단과 동시에 절단면을 연마함으로써 기존 연마(Grinding) 시간을 크게 절감시킬 수 있어 작업의 효율을 향상시키는 효과가 있다. 
       
     타이어, 띠톱, 톱날, 연마, 샘플
Patent KR-20090053641-A (KR)
Inventor: LEE DONG SUK
IPC: G05F3/02
Filed: 2007-11-23
Abstract: 기준 전압 발생 회로는 기준 전압 발생부와 증폭부를 포함한다. 기준 전압 발생부는 제1 전류원을 가지는 제1 전류 경로와 제2 전류원-여기서, 상기 제1 전류원의 일단 및 제2 전류원의 일단은 공통 결합되어 제1 전원 전압에 상응하는 내부 전원 전압에 결합됨-을 가지는 제2 전류 경로를 포함한다. 증폭부는 상기 제1 전원 전압을 제공받아 상기 제1 전원 전압에 상응하는 내부 전원 전압을 각각 상기 제1 전류원 및 상기 제2 전류원을 통하여 음의 피드백받는 차동 증폭기 구조를 가지는 증폭부를 포함한다. 증폭부는 상기 제1 전류원의 타단의 전압을 반전 입력 단자로 입력받고, 상기 제2 전류원의 타단을 비반전 입력 단자로 입력받고, 상기 반전 입력 단자와 비반전 입력 단자에서의 가상 접지 특성에 따라 상기 제1 전류원의 양단 전압과 상기 제2 전류원의 양단 전압이 실질적으로 동일하도록 하여 상기 제1 전류 경로로 제공되는 제1 전류와 상기 제2 전류 경로로 제공되는 제2 전류가 실질적으로 동일하도록 한다. 차동 증폭기의 출력인 내부 전원 전압을 차동 증폭기로 음의 피드백시키고 차동 증폭기의 가상 접지 특성을 이용하여 노이즈에 강하고 저전력 설계가 가능한 기준 전압 발생 회로를 제공할 수 있다.  
     
      기준 전압 발생 회로, 밴드 갭, 기준 전압, 레퍼런스 전압, 저전력, 가상 접지, 노이즈, 잡음
Patent KR-20080048434-A (KR)
Title: Organosilane compounds for modifying dielectrical properties of silicon oxide and silicon nitride films
Inventor: XIAO MANCHAO
IPC: C23C16/00
Filed: 2007-11-28
Abstract: A process for depositing a carbon-containing silicon oxide film or a carbon-containing silicon nitride film with improved etching resistance, a Low Pressure Chemical Vapor Deposition(LPCVD) process for depositing a carbon-containing silicon oxide film or a carbon-containing silicon nitride film with improved etching resistance, and a Low Pressure Chemical Vapor Deposition(LPCVD) process for depositing a silicon oxide or a silicon nitride film with improved etching resistance are provided. A process for depositing a carbon-containing silicon oxide film or a carbon-containing silicon nitride film with improved etching resistance comprises the steps of: providing a structure precursor containing silicon; providing a dopant precursor containing carbon; mixing the dopant precursor containing carbon with the structure precursor containing silicon to obtain a mixture having a mixing ratio Rm(weight percent of the dopant precursor containing carbon in the mixture) of 2 to 85% and a flow rate Fm; providing a chemical modifier having a flow rate Fc; having a flow rate ratio R2 of 25 to 75%, the flow rate ratio R2 being defined as Fm/Fc; and preparing the carbon-containing silicon oxide film or the carbon-containing silicon nitride film with improved etching resistance, wherein the etching resistance increases as incorporation of the carbon increases.
Patent KR-20090063001-A (KR)
Title: Method for determining ink drop velocity and volume of printhead
Inventor: KWON KYE SI
IPC: B41J2/01
Filed: 2007-12-13
Abstract: A method for measuring speed and stereometer of an ink drop in an inkjet printer is provided to maximize productivity by improving image processing algorithm to measure the speed and/or the stereometer of the ink drop. A method for measuring speed and stereometer of an ink drop in an inkjet printer comprises the following steps of: taking a picture of the ink drop injected from a printer header; storing a photographed image in a computer; designating a ROI in a predetermined program among the stored images; performing image processing only a part in the ROI; and measuring the speed by using position difference of the processed ink drop.
Patent KR-20090064171-A (KR)
Title: Piston head for gasoline direct injection engine
Inventor: LEE JAE KWON
IPC: F02F3/26
Filed: 2007-12-15
Abstract: A piston head for a gasoline direct injection engine is provided to make the thick stratification of a mixer around a spark plug and to improve combustion performance by improving the shape of a piston head and heightening the performance for guiding the movement of fuel to make the fuel injected directly to a combustion chamber to be gathered to the vicinity of a spark plug. A piston head for a gasoline direct injection engine comprises a projection structure(30) and a bowl. The projection structure is provided with a maximum projection(31) projected at the highest from the upper side(11a) of a piston head(11), wherein the maximum projection is formed on a point spaced out at a certain distance from the center(C1) of the piston head along a central line(L1) when a central line passing through the center of a piston head along the injection direction(A1) of an injector is fixed, and the projection structure is formed at the same height as the upper side of the piston head by decreasing the projection height gradually from the maximum projection toward the outer circumferential surface of the piston head along an extension line perpendicular to the central line to have the same height as the upper side of the piston head, and the bowl is formed in the projection structure located in a low pressure area(M2) where relatively low pressure is formed against the extension line according to the volume formed by the upper side of the piston head and a combustion chamber when a piston reaches TDC(top dead center).
Patent KR-20090069065-A (KR)
Title: Cooling device for electric motor
Inventor: MOON BYEONG SUN
IPC: H02K9/19
Filed: 2007-12-24
Abstract: An electric motor chiller is provided to maximize a heat radiation area and to improve the efficiency of heat radiation by a sectional ring and outer housing serving as heat radiation pins. A rotor shaft(22) is pivotally installed at the inner center of an electric motor(20). A rotor(24) surrounds the outer circumference of the rotor shaft. A stator(26) is located inside a housing(30). The housing consist of an inner housing(32), a sectional ring(40) and an outer housing(50). A combining aperture having a shape and diameter corresponding to the stator is formed on the inner housing. The stator is pressed to the combining aperture. A protrusion is formed on the leading end and backend of the inner housing.
Patent KR-20090070614-A (KR)
Title: Apparatus of exhaust gas recirculation for a vehicle
Inventor: MOON IN SEOK
IPC: F02M25/07
Filed: 2007-12-27
Abstract: An exhaust gas recirculation system for a vehicle is provided to prevent carbon accumulation inside the circulating pipe because shear stress is added to the carbon deposit inside the circulating pipe according to turning of the control valve. An exhaust gas recirculation system for a vehicle comprises an exhaust elbow(10) wherein the exhaust gas ejected through the exhaust manifold of the engine circulates to the air intake system; a drive shaft(30) which is embedded in a bent unit(20) of the exhaust elbow; and a control valve(40) which controls the exhaust gas flowing into the bent unit of the exhaust elbow. The cross section of the control valve is circular arc shaped. The control valve turns with the circular arc center in the drive shaft.