baber/WOPTO huggingface dataset:
Patent KR-20130132948-A (KR)
Inventor: QIAO MING
IPC: C07C1/20
Filed: 2011-12-29
Abstract: 본 발명은 바이오연료와 화학물질을 생성하기 위해 연속 공정으로 바이오매스를 다운스트림 공정에서 사용하기 위한 덜 복잡한 산소화 화합물로 전환시키는 방법, 반응기 시스템 및 촉매에 관한 것이다. 본 발명은 수소와 불균질 액화 촉매를 이용하여, 헤미셀룰로오스, 셀룰로오스 및 리그닌과 같은 바이오매스의 성분을, 리그노셀룰로오스 유도체, 셀룰로오스 유도체, 헤미셀룰로오스 유도체, 탄수화물, 전분, 다당류, 이당류, 단당류, 당, 당 알코올, 알디톨, 폴리올, 디올, 알코올, 케톤, 사이클릭 에테르, 에스테르, 카르복실산, 알데히드 및 그 혼합물을 포함한 수용성 물질로 전환시키는 방법을 포함한다.
Patent KR-20140016895-A (KR)
Inventor: LONG MAOLIN
IPC: H01L21/3065
Filed: 2012-02-15
Abstract: 플라즈마를 생성하여 웨이퍼를 프로세싱하기 위한 플라즈마 프로세싱 시스템이 개시된다.  플라즈마 프로세싱 시스템은, 플라즈마를 개시하기 위한 천장부 코일 세트, 플라즈마의 분배에 영향을 미치기 위한 사이드 코일 세트 및 플라즈마를 가두기 위한 챔버 구조물을 포함한다.  챔버 구조물은 챔버 벽 및 유전체 부재를 포함한다.  유전체 부재는 천장부, 수직 벽 및 플랜지를 포함한다.  천장부는 수직 벽을 통해 플랜지에 연결되며, 수직 벽을 및 플랜지를 통해 챔버 벽에 연결된다.  천장부 코일 세트는 천장부 위에 배치된다.  사이드 코일 세트는 수직 벽을 둘러싼다.  수직 벽의 수직 내부 표면은 플라즈마에 노출되도록 구성된다.  수직 벽의 내부 표면은 수직 벽의 내부 표면보다 더 작다.
Patent KR-20140012680-A (KR)
Inventor: OYAMADA SEISEI
IPC: H01L23/48
Filed: 2013-02-12
Abstract: 반도체 장치는 반도체 칩과, 중계 기판과, 표면 회로 패턴과, 포스트 어레이를 구비한다.  표면 회로 패턴은 중계 기판의 일방의 표면에 형성되고, 반도체 칩의 외부 접속 패드와 접속된 칩측 패드군, 이 칩측 패드군에 이어져 중계 기판의 외주측에 전개하여 연장되는 중계 배선군 및 각 중계 배선의 칩측 패드와는 반대측의 단부에 이어지는 중계 패드군으로 이루어진다.  포스트 어레이는 복수의 도전로가 중계 기판의 표면에 대하여 교차하는 방향으로 연장되어 형성되고, 또한 각 도전로가 절연성 수지에 의해 서로 절연된 상태가 되고, 도전로의 중계 기판측의 단부가 중계 패드에 접속되고, 도전로의 중계 기판과는 반대측의 단부가 프린트 기판측에 접속된다.
Patent KR-20140027117-A (KR)
Inventor: ZHANG SHUGUANG
IPC: C07K14/705
Filed: 2012-02-23
Abstract: 본 발명은 수용성 막 단백질, 이의 제조 방법 및 이의 사용 방법에 관한 것이다.
Patent KR-20140018267-A (KR)
Inventor: STONE BRADLEY W
IPC: H01M4/68
Filed: 2012-02-29
Abstract: 비-도전 물질을 포함하는 기판을 포함할 수 있는 전극 및 전극 제조 방법이 제공된다. 본 개시의 전극을 포함하는 배터리가 제공된다. 본 개시의 전극 및/또는 배터리를 활용할 수 있는 전기 저장 방법이 제공된다.
Patent KR-20130129465-A (KR)
Inventor: GEORGE THOMAS
IPC: H04W4/06
Filed: 2010-04-02
Abstract: 무선 디바이스들 중에서 미디어의 공유를 조정하기 위한 시스템 및 방법이 개시된다.     발신 무선 통신 디바이스는 적어도 하나의 타겟 무선 통신 디바이스에 미디어를 미디어 채널 상에 발송하고 미디어를 사용하는 방법에 대한 적어도 하나의 커맨드를 커맨드 채널 상에서 발송한다.     이들 발송 동작들은 동기식 또는 비동기식으로 수행될 수 있다.     각 타겟 무선 통신 디바이스는, 양쪽 모두의 신호들을 수신하는 대로, 커맨드를 미디어에 대하여 실행한다.
Patent KR-20140045938-A (KR)
Inventor: KUMAGAI JUN ICHI
IPC: C22F1/08
Filed: 2011-11-28
Abstract: 1.0∼3.0질량%의 Ni를 함유하고, Ni의 질량% 농도에 대하여 1/6∼1/4의 농도의 Si를 함유하고, 잔부가 Cu 및 불가피적 불순물로 이루어지고, 표면의 산술 평균 조도(Ra)가 0.2㎛이며, 표면 조도 평균선을 기준으로 했을 때의 각각의 산부와 곡부의 값의 절대값에 대한 표준편차가 0.1㎛이하이며, 합금조직 중의 결정립의 애스펙트비의 평균값이 0.4∼0.6이며, EBSD법으로 측정 면적 범위내의 전체 픽셀의 방위를 측정하고, 인접한 픽셀간의 방위차가 5°이상인 경계를 결정립계로 간주한 경우의 GOS의 전체 결정립에 있어서의 평균값이 1.2∼1.5°이며, 결정립계의 전체 입계 길이(L)에 대한 특수 입계의 전체 특수 입계 길이(Lσ)의 비율(Lσ/L)이 60∼70%이며, 스프링 한계값이 450∼600N/㎟이며, 150℃에서 1000시간에서의 땜납 내열박리성이 양호하며, 내피로 특성의 변동이 적고, 우수한 딥드로잉 가공성을 갖는 Cu-Ni-Si계 동합금판.
Patent KR-20150081174-A (KR)
Inventor: LEE KWANG KEUN
IPC: G09G3/36
Filed: 2014-01-03
Abstract: The present invention relates to a method for a driving liquid crystal display apparatus, including the steps of generating a first and a second brightness data by correcting a first and a second gray scale data as a first gamma value; generating a smaller value among the first and the second brightness data as a sub-brightness data and correcting the sub-brightness data with use of a second gamma value which is bigger than a first gamma value, thereby generating the sub-corrected brightness data; using at least one among the sub-brightness data and the second brightness data and accordingly correcting a first brightness data, forming the first correcting brightness data; using at least one among sub-brightness data and the first brightness data and accordingly correcting the second brightness data, forming the second correcting brightness data; generating a first and a second corrected gray scale data and a sub-correcting gray scale data by reversely correcting the first and the second correcting brightness data and the sub-corrected brightness data as a first gamma value, thereby providing the first and the second corrected data and sub-corrected data for a first to a third pixel in a first field and driving a liquid crystal apparatus.
Patent KR-20150081470-A (KR)
Inventor: LEE KWAN HO
IPC: C12H6/02
Filed: 2014-01-05
Abstract: The present invention relates to a distiller for a distilled liquor Soju and a distillation method. More specifically, the invention relates to a distiller for a distilled liquor Soju wherein a distillation pot has a distillation neck connected to a cooling pipe, an upper and a lower portion of the distillation neck are provided with distillation plates of 10 or less plates and each plate comprises a bubble cap, etc, and a middle portion is filled with a filler made of a non-corrosive metal, etc. The invention also relates to a distillation method which can control contents of flavor components of Soju by allowing high-boiling point components and low boiling point components to be concentrated differently in the lower and upper portions, respectively, according to reflux rates in the cooling pipe at the time of distillation, and thereafter, to be discharged.
Patent KR-20150084382-A (KR)
Inventor: KIM HONG CHEL
IPC: H02K7/20
Filed: 2014-01-14
Abstract: A reduced motor (16) which increases a force according to the increase of a reduced ratio (100:1) is connected to an accelerating unit (fig B) which can increase rotation required for generating electricity. The stator (21) and the rotator (2) of a generator (A) which rotates slowly with a high number of pole (P) to a planet gear (12) which has a function of inverting the rotor (2) and the stator (21) of the generator, is connected to the the accelerating unit (fig B). After that, if the reduced motor (16) connected to the generator (fig A) is started with electricity stored in a capacitor connected to the reduced motor (16), the electricity generated in the generator directly when the reduced motor rotates is again connected to the reduced motor through a wire connected to the capacitor and the generator. In a power generating system, the reduced motor is rotated by using 70 % of the electricity generated by the generator connected to the reduced motor. The rate of progress; a 2HP(1.5Kw) reduced motor as the generator. Prototype development success.
Patent KR-20150086012-A (KR)
Inventor: CHOI SEUNG KI
IPC: H05K9/00
Filed: 2014-01-17
Abstract: According to an embodiment of the present invention, an electronic device includes a substrate and a shied can which is installed in the substrate and has a particular height. At least part of the side of the shield touches a ground region exposed to the side of the substrate so that it is fixed. Thus, the mounting region of the substrate can be effectively used. Consequently, it can contribute to the slimness of the electronic device. Also, another embodiment can be disclosed.
Patent KR-20150087504-A (KR)
Inventor: JANG GIL UNG
IPC: A23F3/06
Filed: 2014-01-22
Abstract: The present invention relates to a roast tea including the eastern prickly pear (Opuntia humifusa) fruits as a main ingredient and a preparation method thereof. The method includes: a collection step (s1) of collecting the eastern prickly pear fruits in October and November every year; a selecting and washing step (s2); a slicing step (s3) of cutting the washed and selected eastern prickly pear fruits in 1-3 mm thickness; a drying step (s4) of drying the sliced eastern prickly pear fruits in a far-infrared dryer at 60-75 degrees Celsius for 10-12 hours; a first roasting step (s5) of roasting the sliced and dried eastern prickly pear fruits in the medium heat at 40-55 degrees Celsius for 1-3 minutes; a first grinding step (s6) of grinding the eastern prickly pear fruits in a grinder after the first roasting step; a separating step (s7) of separating the fruit powder and fruit seeds through filtering the powder prepared in the first grinding step through a 2 mm filter; a second grinding step of (s8a) grinding the fruit powder in the grinder for the second time to prepare the powder of 160-180 mash; and a second roasting step (s8b) of roasting the eastern prickly pear fruit seeds for 1-3 minutes in the medium heat at 85-95 degrees Celsius.
Patent KR-20150087631-A (KR)
Inventor: CHOI KWANG WOOK
IPC: F21S2/00
Filed: 2014-01-22
Abstract: A back light assembly includes a light source member, an optical film assembly, a backside receiving container and a mold frame. The light source member generates light. The optical film assembly is arranged on the light source member and improves the characteristic of the light. The backside receiving container includes a bottom plate, a first combination protrusion which protrudes from the edge of the bottom plate and extends in a direction parallel to the protrusion direction, and sidewalls having the first combination grooves to receive the light source member and the optical film assembly. The mold frame is arranged in the backside receiving container and pressurizes the peripheral part of the optical film assembly and includes a second combination groove which extends in a direction parallel to the protrusion direction and is fit into the first combination protrusion and a second combination protrusion fit into the first combination groove. Thus, assembling and processing capability are increased while defects are reduced.
Patent KR-20150091778-A (KR)
Inventor: CHA GYU IL
IPC: G06F9/54
Filed: 2014-02-04
Abstract: The present invention relates to a method for sharing a communications channel between processes in an InfiniBand network, capable of improving expansion performance of a system node by setting a single communications channel shared between processes in a node, instead of an individual communications channel for each process in the InfiniBand network. More particularly, the method comprises the steps of: executing a communications agent process and terminating the same; sharing a transmission request queue and a reception response queue between processes; transmitting a transmission request, received from the shared transmission request queue, to a corresponding InfiniBand transmission queue through a transmission request generator; and transmitting a packet, received from a node to be communicated, to a corresponding application process for calculation through a demultiplexer to be responded.
Patent KR-20150094147-A (KR)
Inventor: LIM HEUI SEOK
IPC: G06F17/30
Filed: 2014-02-10
Abstract: The present invention relates to a wisdom construction method, more specifically, comprising the steps of: extracting wisdom from knowledge data collected via a user terminal sensor and a social network by an extraction unit; assigning a weighted value to the wisdom according to importance of the extracted wisdom, and digitizing the wisdom by a digitizing unit; and evaluating the level of the digitized wisdom by an evaluating unit. By such configuration, the wisdom construction method of the present invention objectifies know-how or expertise owned by each individual to be available to a plurality of users, and returns the know-how or the expertise to the society without being vanished.
Patent KR-20150099627-A (KR)
Inventor: KIM DONG HWAN
IPC: G01R31/08
Filed: 2014-02-21
Abstract: Disclosed is a power transmission line detecting method capable of efficiently detecting the location of a power transmission line using an image. For this, the power transmission line detecting method using a line search based on a vanishing point includes the steps of: (a) estimating the vanishing point (Vi) on which the power transmission line are gathered by using the outermost power transmission line region in which the power transmission line is located; and (b) detecting the location of the power transmission line by applying the estimated vanishing point and a fan shape detecting method. The present invention accurately detects the location of the power transmission line in comparison with an existing detecting method using an edge and Hough transform and optimal threshold methods.
Patent KR-20150104379-A (KR)
Inventor: PARK SUN MIN
IPC: A61P29/00
Filed: 2014-03-05
Abstract: The present invention provides a composition comprising viscothionin as an active ingredient for preventing or treating inflammatory diseases or hyperlipidemia and a food composition comprising viscothionin as an active ingredient for alleviating or improving inflammatory diseases or hyperlipidemia. Viscothionin which is an active ingredient of the present invention can be separated from hot water extracts of Viscum album var. coloratum and mass produce viscothionin through organic chemical synthesis. A composition of the present invention alleviates edema and behavior disorders caused by arthritis, exhibits efficacy which alleviates arthritis and hyperlipidemia by reducing a concentration of triglyceride in blood, total cholesterol and free fatty acids and can be helpfully used as a medicine or a functional food composition.
Patent KR-20150104931-A (KR)
Inventor: JOO SEONG SOO
IPC: A61K36/05
Filed: 2014-03-07
Abstract: The present invention relates to a pharmaceutical composition for treating cancer and, more specifically, to a pharmaceutical composition for treating cancer, which comprises a freshwater laver extract, or an organic solvent fraction of a freshwater laver for gradually fractionating the freshwater laver extract into an organic solvent as an active ingredient.
Patent KR-20150108977-A (KR)
Inventor: HWANG DAE HYUN
IPC: F28F25/00
Filed: 2014-03-18
Abstract: 본 발명은 외부의 공기가 내부로 유입되는 공기흡입구를 구비하고 상면이 개구 형성된 내부공간이 마련된 하우징과; 상기 하우징의 개구 형성된 상면에 구비되어 외부공기가 상기 공기흡입구를 통하여 상기 내부공간으로 흡입되도록 하는 냉각팬과; 상기 하우징의 내부공간에 설치되는 충진재와; 상기 하우징의 하측에 구비되어 냉각수가 수용되는 냉각수 수용부와; 상기 냉각수 수용부에 수용된 상기 냉각수를 상기 충진재 측으로 분출시킬 수 있도록 일단이 상기 냉각수 수용부와 연결되어 상기 충진재의 상측으로 연장 형성되며, 상기 충진재의 상측에 배치된 영역에 복수의 분출공이 관통 형성된열교환부와; 가열된 냉각수를 유동시켜 상기 충진재 측으로 분출할 수 있도록  상기 하우징의 높이 방향을 따라 연장 형성되는 연장부와, 상기 연장부와 연통되어 상기 충진재의 상측에 배치되며 복수의 분출공이 관통 형성된 분출부로 이루어지는 보조열교환부를; 포함함으로써, 냉각탑에 별도의 보조 열교환부를 구비함으로써 냉각탑으로 유입되는 냉각수를 습식으로 냉각시킴과 동시에 냉각탑의 상부 측면에서도 외부의 공기가 냉각탑의 내부로 유입되도록 하여 건식으로도 냉각이 이루어지도록 함으로써 냉각 효율을 높여서 에너지를 절감함과 동시에 냉각탑의 내측으로 냉각수 공급파이프를 설치함으로써 외장을 미려하게 할 수 있다.
Patent KR-20150109192-A (KR)
Inventor: LEE YONG WOO
IPC: C02F3/10
Filed: 2014-03-19
Abstract: A waste water treatment apparatus according to one embodiment of the present invention comprises: a treatment tank in which waste water flowed from an inlet unit in an one side surface and a plurality of fluidized bed photocatalysts are put; a plurality of UV lamps which are mounted on the inside of the treatment tank; a screen unit which is spaced from an inner surface of the treatment tank so as to collect the fluidized bed photocatalysts; a discharge unit which is formed on the other side surface of the treatment tank so as to discharge the water waste separated from the screen unit; and a diffuser unit which is formed on a one side of the lower bottom of the treatment tank for fluidity of the fluidized bed photocatalysts. A waste water treatment apparatus according to one embodiment of the present invention improves photolysis efficiency of water waste by smoothly flowing a plurality of fluidized bed photocatalysts and has an effect on easily collecting the fluidized bed photocatalysts using the screen unit.
Patent KR-20140118840-A (KR)
Inventor: YAMADA AKINORI
IPC: H03H9/215
Filed: 2014-03-25
Abstract: Provided are a vibrating element which is small and is capable of reducing deterioration of vibration characteristics, a vibrator comprising the vibrating element, an oscillator, and an electronic apparatus. The vibrating element (2) includes a base portion (4) and a pair of vibrating arms (5, 6) that are provided integrally with the base portion (4) and extend in a Y-axis direction from a distal end of the base portion (4). When the lengths of the vibrating arms (5, 6) are set to L and the lengths of hammerheads (59, 69) are set to H, a relation of 0.183 <= H/L <= 0.597 is satisfied. When a resonance frequency of a basic vibration mode is set to ω0 and a resonance frequency of a vibration mode different from the basic vibration mode is set to ω1, a relation of (¦ω0-ω1¦)/ω0 >= 0.124 is satisfied.
Patent KR-20150112542-A (KR)
Title: A pharmaceutical composition for prevention or treatment of proliferative vitreoretinopathy comprising the inhibitor of mitochondrial complex i as an effective component
Inventor: YOO YOUNG HYUN
IPC: A61K31/343
Filed: 2014-03-28
Abstract: The present invention relates to a pharmaceutical composition comprising an inhibitor of mitochondrial complex I inside a cell as an active ingredient for preventing or treating proliferative vitreoretinopathy (PVR). According to the present invention, the active ingredient contained in the pharmaceutical composition of the present invention can be developed as an effective medicine with respect to PVR as ophthalmic pathological disease by regulating cell death of RPE cells.
Patent KR-20140122192-A (KR)
Inventor: LEE JIN YOUNG
IPC: H04N13/00
Filed: 2014-04-07
Abstract: Disclosed is a method for decoding a depth map frame which comprises the steps of: recovering a color frame based on coding information of the color frame acquired from a bit stream; splitting a maximum coding unit of a depth map frame into one or more coding units based on split information of the depth map frame acquired from the bit stream; splitting the coding unit into one or more prediction units for prediction decoding; determining whether to decode the current prediction unit by splitting the current prediction unit into at least one partition by acquiring information on whether the current prediction unit is split into the partitions from the bit stream; determining whether to decode the current prediction unit using differential information indicating a difference between a depth value of the partition corresponding to the original depth map frame and a depth value of the partition predicted from a peripheral block of the current prediction unit by acquiring the information on whether the current prediction unit is split into the partitions from the bit stream when it is determined that the current prediction unit is decoded by being split into the partitions; and decoding the current prediction unit using the differential information based on whether the current prediction unit is split into the partitions and whether the differential information is used.
Patent KR-20150117445-A (KR)
Inventor: KIM JAE WON
IPC: A01N63/40
Filed: 2014-04-10
Abstract: The present invention relates to a novel bacteriophage ΦCJ28 (accession No. KCCM11466P) and a composition comprising the same as an active ingredient. In addition, the present invention relates to a method for preventing and/or treating infectious diseases caused by enterotoxigenic Escherichia coli of animals, excluding humans, by using the bacteriophage ΦCJ28 (accession No. KCCM11466P) or the composition.
Patent KR-20150118722-A (KR)
Inventor: LEE BONG DAE
IPC: F04D29/70
Filed: 2014-04-15
Abstract: 본 발명은 터빈 상에 공기를 제진 처리하는 필터에 있어서: 길이 방향의 수용홈(11a)을 구비하는 한쌍의 수직프레임(11)과, 상기 수직프레임(11)의 사이에 등간격 배치되고, 길이 방향으로 평행되게 한쌍의 고정홈(12a)을 구비하는 다수개의 보조프레임(12)과, 상기 수직프레임(11)과 보조프레임(12)의 각 끝단부에 서로 직교되게 고정되고, 터빈에 고정이 가능하게 삽설홈(13a)을 개재하는 수평프레임(13)을 구비하는 프레임부(10); 및 상기 수직프레임(11)의 수용홈(11a)과 보조프레임(12)의 고정홈(12a) 상에 각각 삽설되어 공기를 제진 처리하는 필터부(20);를 포함하여 이루어지는 것을 특징으로 한다. 
이에 따라 본 발명은, 터빈 상에 발생하는 이물질을 제진함에 따라 터빈을 적정하게 보호할 수 있고, 부직필터의 삽설과 해체가 용이하며, 압력으로부터 지지력이 향상도록 형성하는 효과를 제공한다.
Patent KR-20150124672-A (KR)
Title: Apparatus for air cleanning
Inventor: JI JUN DONG
IPC: B60H3/06
Filed: 2014-04-29
Abstract: An air purifying apparatus is disclosed. The air purifying apparatus according to an embodiment of the present invention comprises: an air purifier mounted inside a vehicle; a reservation setup part receiving reservation information including at least one among operation starting information and operation time information of the air purifier, and reserving operation of the air purifier based on the reservation information; and a control part controlling the operation of the air purifier based on the reservation information.
Patent KR-20150125190-A (KR)
Title: Toxicity detecting method
Inventor: KIM KYUNG NAM
IPC: G01N33/18
Filed: 2014-04-30
Abstract: The present invention relates to a method for measuring ecological toxicity, in which an animal behavior pattern of an observation object living organism such as an euglena is recognized, and presence of toxicity in a measurement object liquid and a toxicity value can be automatically measured based thereon. The method comprises: an image obtaining step of obtaining an image such as a video or a stopping image about an observation object living organism such as an euglena; a first capture screen selecting step of selecting a first capture screen of first time in the obtained image; a first capture screen feature extracting step of extracting first feature information of each observation object living organism from the first capture screen; a second capture screen selecting step of selecting a second capture screen of second time from the obtained image; a second capture screen feature extracting step of extracting second feature information of each observation object living organism from the second capture screen; a comparing and identifying step of comparing the first feature information and the second feature information to match similar or identical information and identify a particular observation object living organism; a pattern value calculating step of calculating pattern value information about an animal pattern by using differences between the first feature information and the second feature information of the particular observation object living organism; and a toxicity value calculating step of calculating a toxicity value of a toxicity material in a measurement object liquid fed between the first time and the second time.
Patent KR-20140066146-A (KR)
Title: Method and apparatus for video encoding using block merging, method and apparatus for video decoding using block merging
Inventor: LEE TAMMY
IPC: H04N19/103
Filed: 2014-05-07
Abstract: Disclosed is a method for encoding a video using block merging, which comprises determining a data unit for encoding of a current picture and an encoding mode indicating an encoding method including prediction encoding performed for each data unit; determining whether to merge the data unit with at least one neighboring data unit based on at least one of a prediction mode and the encoding mode per data unit; and determining prediction mode information, merging related information, and prediction related information based on the determination of whether to merge the data unit with the at least one neighboring data and determining encoding information of the data unit including the determined information.
Patent KR-20150128276-A (KR)
Title: Solenoid valve for brake system
Inventor: KIM BYUNG KI
IPC: B60T8/36
Filed: 2014-05-09
Abstract: Disclosed is a solenoid valve for a brake system. The solenoid valve for a brake system according to an embodiment of the present invention comprises: a valve housing which is installed in a bore of a modulator block and includes an internal flow path; a valve core placed on one end of the valve housing; a valve sheet which is placed on the other end of the valve housing and has an orifice; an armature which is linearly slid by the valve core and includes a ball capable of selectively opening and closing the orifice; a sleeve which accommodates the valve core and the valve housing and is fixated to the bore; and a returning spring to give elastic restoring force to the armature to open the orifice. The armature includes a placing groove unit to fixate and install the ball onto the end. The placing groove unit comprises: an accommodating groove to accommodate a part of the ball; and a leading end protrusion to support the outer side of the ball by separately protruding from the inner side of the accommodating groove.