baber/WOPTO huggingface dataset:
Patent WO-2021215773-A1 (WO)
Inventor: LEE JEONGSOO
IPC: G06F3/0354
Filed: 2021-04-19
Abstract: The present invention relates to a touch-type portable object touching device and, more particularly, to a touch-type portable object touching device having an automatic disinfection function for preventing infection of various diseases including viruses, the touch-type portable object touching device applying, when a cover unit is coupled to or separated from a touch unit, a disinfection fluid onto a surface of the touch unit and the inside of a touch rod housing so as to disinfect the entire touch unit and the inside of the touch rod housing and to minimize infection due to viruses.
Patent WO-2022025441-A1 (WO)
Inventor: KIM GYU HYON
IPC: H04N5/77
Filed: 2021-06-24
Abstract: L'invention concerne un ensemble de capture d'image omnidirectionnelle pour générer de manière commode des visites virtuelles réalisées par l'intermédiaire d'images omnidirectionnelles, et un procédé exécuté par celui-ci. Selon un aspect de la présente invention, un ensemble de capture d'image omnidirectionnelle comprend : un appareil de capture d'image omnidirectionnelle ; un appareil informatique mobile ; et un support mobile pour fixer l'appareil de capture d'image omnidirectionnelle et l'appareil informatique mobile.
Patent WO-2023277202-A1 (WO)
Title: Display device
Inventor: CHOI HYUNAH
IPC: H04N5/46
Filed: 2021-06-28
Abstract: An embodiment of the present invention comprises: a first antenna module which has a plurality of first antenna patches and a plurality of dipole antennas disposed on a first substrate and is closer to one end among one end and the other end of a display panel; and a second antenna module which has a plurality of second antenna patches and a plurality of monopole antennas disposed on a second substrate and is closer to the other end among one end and the other end of the display panel, wherein the first antenna module and the second antenna module are arranged under the display panel to be spaced a predetermined distance apart from each other in the left-and-right direction.
Patent WO-2022085908-A1 (WO)
Inventor: LEE IL JAE
IPC: C09D175/04
Filed: 2021-08-09
Abstract: La présente invention se rapporte à un verre ultra mince et à un verre protecteur, et à un procédé de fabrication de celui-ci, une couche de protection étant disposée sur le verre de couverture de base de sorte à améliorer la durabilité du verre ultra mince, ce par quoi le verre ultra mince ne peut pas être endommagé. À cette fin, le verre ultra mince et le verre protecteur comprennent : un verre de couverture de base comprenant des premiers films de verre et de TPU ultra minces ayant une épaisseur de 10 à 80 µm et fixés aux surfaces supérieure et inférieure du premier verre ultra mince respectivement ; une couche de silicium appliquée sur la surface supérieure du verre de couverture de base ; une couche de TPU appliquée sur la surface supérieure de la couche de silicium ; un film optique fixé à la surface supérieure de la couche de TPU avec un espace de pliage laissé dans la partie centrale ; et un second verre ultra mince disposé sur la surface supérieure du film optique avec un espace de pliage laissé dans la partie centrale pour coïncider avec le film optique.
Patent WO-2022071742-A1 (WO)
Title: Method and device for generating media file
Inventor: HENDRY HENDRY
IPC: H04N19/30
Filed: 2021-09-29
Abstract: A method for generating a media file according to an embodiment of the present document may comprise the steps of: storing video information in tracks of a file format; configuring information related to an operating point in the file format; and generating a media file on the basis of the file format. The file format may include information on the maximum picture width with respect to the operating point and information on the maximum picture height with respect to the operating point. Accordingly, the information on the maximum picture width and the information on the maximum picture height may be used to select the operating point.
Patent WO-2023017902-A1 (WO)
Title: High-speed semiconductor device driving circuit and system for power
Inventor: JANG SUNG ROC
IPC: H03K3/57
Filed: 2021-10-14
Abstract: Disclosed are a high-speed semiconductor device driving circuit and system for power. The semiconductor device driving circuit comprises a transformation unit, a rectification unit, a pulse shaping unit, and a driving voltage application unit. The transformation unit includes a transformer, the rectification unit rectifies a pulse voltage output from the transformation unit and generates a rectified voltage, the pulse shaping unit receives an input of the pulse voltage and shapes the rectified voltage to generate a driving voltage, and the driving voltage application unit generates a positive driving voltage and a negative driving voltage from the rectified voltage by using the driving voltage, and applies the positive driving voltage and the negative driving voltage to a semiconductor device. According to the configuration as described above, insulated driving power is secured by using the transformer, and the positive driving voltage and the negative driving voltage are generated by using the driving voltage shaped from the input pulse voltage, such that a differentiated gate driving voltage level may be provided to the semiconductor device.
Patent WO-2022103015-A1 (WO)
Inventor: LEE YONGYEON
IPC: G06F3/0487
Filed: 2021-10-25
Abstract: 본 문서에 개시된 일 실시 예에 따른 전자 장치는 상기 전자 장치의 전면 및 측면에 걸쳐 배치된 플렉서블 디스플레이, 상기 전자 장치의 측면에 배치된 적어도 하나의 액추에이터(actuator), 상기 플렉서블 디스플레이 및 상기 적어도 하나의 액추에이터와 작동적으로 연결된 프로세서를 포함할 수 있다. 상기 프로세서는 상기 플렉서블 디스플레이의 영역 중에서 상기 전자 장치의 측면에 배치된 적어도 하나의 측면 영역이 돌출되어 기능 키를 형성하도록 상기 적어도 하나의 액추에이터를 제어하고, 상기 플렉서블 디스플레이의 영역 중에서 상기 전자 장치의 전면에 배치된 전면 영역을 통해, 상기 기능 키와 관련된 정보에 대응하는 시각적 객체를 표시할 수 있다.
Patent WO-2022139200-A1 (WO)
Inventor: YANG DONG SEOK
IPC: G06K9/00
Filed: 2021-11-24
Abstract: A same object identification method based on a skeleton analysis of continuous image frames, according to one embodiment of the present invention, is a method which is carried out by a computer and is for identifying the same object in continuous image frames, the method comprising the steps of: extracting respective skeleton coordinate sets for objects which are respectively included in first and second continuous image frames; selecting, from the skeleton coordinate sets, preset reference coordinates, and relative coordinates which are connected to the reference coordinates; and, on the basis of the reference coordinates and the relative coordinates, determining the sameness of the objects respectively included in the first and second image frames.
Patent WO-2022124849-A1 (WO)
Inventor: KIM SUNG HOON
IPC: A61P37/04
Filed: 2021-12-10
Abstract: 본 발명은 면역 증진 활성이 있는 신규 CRS 단편 펩타이드 및 이의 용도에 관한 것으로, 보다 상세하게는 서열번호 2의 아미노산 서열로 이루어진 신규 펩타이드 및 이의 백신 보조제, 그리고 암 치료제로의 용도에 관한 것이다. 본 발명에서 개시하는 펩타이드는 본 명세서에서 최초로 개시되는 CRS 단편으로서 항암활성 및 면역기능 증진 활성을 나타낸다.
Patent WO-2022145898-A1 (WO)
Inventor: SHIM WOO JUNG
IPC: G06T5/40
Filed: 2021-12-24
Abstract: A method and a system for automatically reading an X-ray raw image in real time on the basis of artificial intelligence are provided. A system for automatically reading an X-ray raw image in real time, according to an embodiment of the present invention, comprises: an image acquisition unit for acquiring an X-ray raw image of a patient; an image reading unit, which inputs, into an artificial-intelligence-based learning model, the X-ray raw image received from the image acquisition unit, so as to read the image; and an image display unit, which receives the image reading result from the image reading unit to display same on a screen. Therefore, rather than a booter from a DICOM file, a raw file can be directly used so as to be linked with an artificial intelligence solution. In addition, the quality of a raw file is evaluated and the image quality of the raw file can be improved and standardized.
Patent WO-2022154331-A1 (WO)
Inventor: PARK DO-SUNG
IPC: H05B3/22
Filed: 2021-12-29
Abstract: A planar heating element for heating a substrate is disclosed. According to an embodiment of the present invention, a planar heating element for heating a substrate is provided, the planar heating element comprising: a lower board forming a flat panel structure and having a predetermined etched groove formed therein; heating parts provided in a plurality and in the form of units in the etched groove of the lower board so as to be respectively accommodated in virtual areas which are divided in a plurality, each unit forming a predetermined pattern in the form of a flat panel and consecutively connected, and generating heat when a supply of electricity is received; and an upper board forming a flat panel structure, stacked on the lower board, and having at least the edge coming into contact with the lower board to be adhered.
Patent WO-2022154634-A1 (WO)
Inventor: LEE YOUHO
IPC: G21C17/02
Filed: 2022-01-18
Abstract: La présente invention concerne un appareil d'essai de corrosion, l'appareil d'essai de corrosion selon la présente invention comprenant : une chambre hébergeant un fluide ; un disque sur lequel un échantillon est monté et qui est situé dans le fluide ; et une unité d'entraînement qui met en rotation le disque, l'échantillon étant agencé dans la direction radiale du disque pour un essai de corrosion selon la vitesse d'écoulement relative du fluide, qui varie en continu dans la direction radiale lorsque le disque est en rotation.
Patent WO-2023140400-A1 (WO)
Inventor: HAN JINKYU
IPC: C01B32/05
Filed: 2022-01-21
Abstract: La présente invention concerne une méthode de préparation de MCMB et peut comprendre les étapes consistant à a) prétraiter le brai brut, b) mélanger le brai prétraité avec un sel, c) pulvériser et agiter le mélange de brai et de sel, (d) chauffer et agiter le mélange pulvérisé à une température de 150 à 300°C pendant 30 à 180 minutes pour pyrolyser et polymériser le brai brut et préparer ainsi un brai de mésophase, e) refroidir le mélange chauffé et agité et éliminer un sel de celui-ci, et f) post-traiter le brai de mésophase à partir duquel un sel a été retiré pour préparer le MCMB.
Patent WO-2022211281-A1 (WO)
Inventor: LEE NAM JIN
IPC: C07D409/12
Filed: 2022-02-24
Abstract: The present invention relates to a heterocyclic compound represented by chemical formula 1, an organic light-emitting device comprising same, a manufacturing method therefor, and a composition for an organic material layer.
Patent WO-2023176991-A1 (WO)
Inventor: KIM JONGYEOP
IPC: B65D65/42
Filed: 2022-03-15
Abstract: 본 발명은 부직포와 저밀도 폴리에틸렌 필름을 포함하는 선재 코일용 포장재 및 그 제조방법에 관한 것으로서, 선재 코일용 포장재는 에틸렌초산비닐과 저밀도 폴리에틸렌을 포함하는 외부 폴리머층과, 외부 폴리머층 하부에 위치하는 부직포층과, 부직포층 하부에 위치하고, 에틸렌초산비닐과 저밀도 폴리에틸렌을 포함하는 내부 폴리머층을 포함한다. 부직포층에 평량이 20g/m 2  내지 50g/m 2 인 폴리프로필렌 부직포를 사용하여 포장된 제품을 충격으로부터 보호하고, 자가점착성을 가진다. 선형 엠보를 사용하여 일정 방향의 파단이 발생하지 않는 효과가 있어서 선재 코일 포장재로 유용하다.
Patent WO-2022216124-A1 (WO)
Title: Image encoding/decoding method and device for performing prediction of image on basis of multiple intra predictions, and method for transmitting bitstream
Inventor: PARK NAE RI
IPC: H04N19/184
Filed: 2022-04-08
Abstract: An image encoding/decoding method and device are provided. An image decoding method according to the present disclosure is performed by an image decoding device and comprises a step of reconstructing information indicating whether a prediction based on two or more intra prediction modes is performed on a current block. On the basis of the information indicating that a prediction based on two or more intra prediction modes is performed on the current block, the image decoding method may further comprise the steps of: generating a first prediction sample of the current block on the basis of a first intra prediction mode; generating at least one second prediction sample of the current block on the basis of at least one second intra prediction mode; and generating a prediction block of the current block on the basis of the first prediction sample and the second prediction sample, wherein the prediction block is generated by applying a first weight and a second weight to the first prediction sample and the second prediction sample, respectively.
Patent WO-2022245125-A1 (WO)
Title: 트리사이클릭 유도체 화합물의 결정형 및 이의 제조방법 및 이를 포함하는 약학적 조성물
Inventor: JEON SEONG HYEON
IPC: A61P19/10
Filed: 2022-05-18
Abstract: 본 발명은 화학식 1로 표시되는 트리사이클릭 유도체 화합물의 시트르산 염 결정형, 상기 시트르산 염 결정형의 제조방법, 및 상기 시트르산 염 결정형의 제조에 유용하게 사용되는 화학식 1로 표시되는 트리사이클릭 유도체 화합물의 결정형에 관한 것이다.
Patent WO-2022260384-A1 (WO)
Title: Polyethylene film having multi-layer structure and packaging material produced using the same
Inventor: BAEK EUNJUNG
IPC: B32B27/08
Filed: 2022-06-07
Abstract: The present invention relates to a polyethylene film having a multi-layer structure and a packaging material produced using the same. Specifically, the present invention relates to a polyethylene film having a multi-layer structure that is recyclable and does not cause environmental pollution because it is formed of a polyethylene single material, has excellent processability and durability due to excellent mechanical properties and thermal properties in comparison to an existing laminated film formed of different materials, and in particular, is easily commercialized in various temperature ranges due to significantly improved durability at a low temperature, and a packaging material produced using the same.
Patent WO-2022270802-A1 (WO)
Inventor: CHO SEUNG SUN
IPC: B01L7/00
Filed: 2022-06-10
Abstract: Sont divulgués une puce de diagnostic in vitro présentant de multiples niveaux d'hydrophilie, qui régule de manière différentielle les débits d'un échantillon liquide et permet ainsi à l'échantillon liquide d'être distribué de manière uniforme jusqu'aux régions de coin ou de bord d'un espace de réaction. La puce de diagnostic in vitro présentant de multiples niveaux d'hydrophilie comprend : un réseau de puits comprenant une pluralité de puits ; et une couche de revêtement multi-hydrophile appliquée sur le réseau de puits et régulant les débits d'un échantillon de manière à être mutuellement différents. La couche de revêtement hydrophile est formée sur le réseau de puits de manière à présenter un caractère hydrophile élevé conformément à la région centrale du réseau de puits, et à présenter un faible caractère hydrophile conformément à la région périphérique du réseau de puits, et ainsi la formation d'une poche d'air dans l'espace de réaction peut être bloquée. En conséquence, l'apparition d'une erreur provoquée par la poche d'air dans un résultat d'essai PCR peut être empêchée.
Patent WO-2023277388-A1 (WO)
Inventor: LEE YOUNGKYU
IPC: G08B21/18
Filed: 2022-06-12
Abstract: 본 발명은 면적에 대한 정속 정의를 통한 기기의 예지 보전방법에 관한 것으로, 그 구성은 기기가 구동 상태에서 하나의 작업공정을 수행하는데 소요되는 에너지 크기가 시간의 흐름에 따라 변화되는 에너지 파형 정보를 측정하되, 그 측정되는 에너지 파형을 적분한 면적 값을 수집하는 정보 수집단계(S10)와, 상기 정보 수집단계(S10)를 통해 수집되는 기기에서 반복적으로 수행되는 작업공정 각각의 에너지 파형에 대한 면적 값을 시간의 흐름에 따라 배치하되, 그 배치되는 면적 값을 기반으로 일정 단위 시간의 면적 정속구간을 반복적으로 설정 수집하는 정속구간 수집단계(S20)와, 상기 면적 정속구간에 포함되는 면적 값에 대한 평균값을 반복적으로 수집하는 평균값 수집단계(S30)와, 상기 면적 정속구간의 평균값에 대한 면적 임계값을 설정하는 임계값 설정단계(S40)와, 기기의 실시간 구동 상태에서 반복적으로 수행되는 작업공정의 에너지 파형에 대한 면적 값을 기반으로 일정 단위 시간의 면적 정속구간을 반복적으로 설정 수집하고, 그 수집된 면적 정속구간에 포함되는 면적 값에 대한 평균값이 상기 면적 임계값을 초과하면 경보하여 기기의 점검 관리를 유도하는 검출단계(S50)로 이루어지는 것을 특징으로 하는 것이다.
Patent WO-2023058855-A1 (WO)
Inventor: LEE KWANG HEE
IPC: B32B37/12
Filed: 2022-07-18
Abstract: 본 발명은 단면 FCCL 및 양면 FCCL의 제조 방법에 관한 발명으로, 보다 상세하게는 단면 FCCL의 제조 방법에 있어서, 구리층, LCP 필름층 및 PI 필름층으로 3 Layer 단면 FCCL을 구성하여, 기존 구리층, LCP 필름층만으로 구성된 2 Layer 단면 FCCL보다 이방성을 최소화하여 인장강도를 개선하는 것을 특징으로 한다. 또한, 양면 FCCL의 제조 방법에 있어서, 구리층 및 LCP 필름층으로 이루어진 한 쌍의 적층체 간을, 종래와 같이 고온으로 LCP 필름층을 녹여 결합하는 것이 아닌, 접착제를 도포하여 결합하여 양면 FCCL를 제조하는 것을 특징으로 한다. 이로 인해, 고온의 합지 공정을 위한 설비 구축이 불요하여 생산성이 향상되는 장점이 있다.
Patent WO-2023022484-A1 (WO)
Inventor: KWON JOON MYOUNG
IPC: A61B5/28
Filed: 2022-08-16
Abstract: 본 발명은, 2전극을 구비하여, 2개 이상의 전기축의 심전도를 시차를 두고 각각 측정하여 비동기 심전도 데이터는 획득하는 단일유도 심전도 측정부(110), 및 동일 전기축에서 측정된 표준유도 심전도 및 표준유도 심전도에 상응하는 질환의 유무와 질환의 정도를 매칭한 표준 복수 심전도 데이터셋을 학습하여 미리 구축된 진단 알고리즘(121)을 통해, 단일유도 심전도 측정부(110)로부터 입력된 비동기 심전도 데이터로부터 질환의 유무와 질환의 정도를 예측하는, 예측부(120)를 포함하여, 단일유도 심전도기기에 의해 측정된 2유도 이상의 비동기 심전도 데이터로부터 질환을 예측할 수 있는, 단일유도 심전도기기를 활용한 건강상태 예측 시스템을 개시한다.
Patent WO-2023171867-A1 (WO)
Title: Oreiller à dureté réglable
Inventor: LEE MYUNG WOOK
IPC: A47G9/10
Filed: 2022-10-05
Abstract: La présente invention concerne un oreiller à dureté réglable. L'oreiller comprend : un cadre d'oreiller ; et une ou plusieurs sangles, le cadre d'oreiller comprenant une pluralité de rainures auxquelles les sangles peuvent être fixées, au niveau du côté inférieur de celui-ci, et la dureté du cadre d'oreiller supportant le poids de la tête d'un utilisateur est ajustée selon un type dans lequel les sangles sont fixées aux rainures.
Patent WO-2023068910-A1 (WO)
Title: Method and apparatus for timing advance adjustment
Inventor: COZZO CARMELA
IPC: H04W56/00
Filed: 2022-10-24
Abstract: The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Apparatuses and methods for timing advance (TA) adjustment. A method includes receiving first information indicating use of same power and continuous phase for transmission of a channel over a number of slots and second information indicating a first TA value. The method includes determining a second slot for adjusting a time for the transmission of the channel based on the first TA value, a first power for the transmission of the channel in slots before the second slots, and a second power for the transmission of the channel in slots starting from the second slot. The method further includes adjusting the time for the transmission of the channel in the second slot based on the first TA value and transmitting the channel with a first power in slots before the second slot and with a second power in slots starting from the second slot.
Patent WO-2023140508-A1 (WO)
Inventor: KANUNGO TAPAS
IPC: G10L15/22
Filed: 2022-12-12
Abstract: Un mode de réalisation de la présente invention concerne un procédé d'identification simultanée d'intention et de créneaux dans une instruction d'assistant vocal comprend la segmentation, en une pluralité de jetons, d'un énoncé actuel d'un utilisateur d'un dispositif comprenant l'instruction d'assistant vocal, l'ajout initial de la pluralité de jetons avec un énoncé précédent et un jeton de séparation, l'obtention, à l'aide d'un modèle d'apprentissage automatique basé sur un transformateur, d'une ou plusieurs prédictions pour l'instruction d'assistant vocal à partir de la pluralité de jetons ajoutés initialement, l'alignement, conformément à une ou plusieurs contraintes, d'au moins une parmi la prédiction de fanion, la prédiction d'objectif et la prédiction de sous-objectif, la fourniture, au dispositif, de l'intention identifiée et des créneaux identifiés sur la base de la prédiction d'intention et de l'au moins une parmi la prédiction de fanion, la prédiction d'objectif et la prédiction de sous-objectif alignée, amenant le dispositif à exécuter l'instruction d'assistant vocal selon l'intention identifiée et les créneaux identifiés.
Patent WO-2023158093-A1 (WO)
Inventor: KIM KYOUNG MEE
IPC: C12Q1/6886
Filed: 2022-12-28
Abstract: Un aspect de la présente invention concerne une composition permettant de prédire la réponse d'un patient cancéreux à un inhibiteur de point de contrôle immunitaire, ainsi qu'un procédé permettant de prédire cette réponse. Selon un aspect, il a été confirmé que les résultats de la RT-qPCR pour l'ARNm CD274 dans les cellules cancéreuses de patients cancéreux traités avec un inhibiteur de point de contrôle immunitaire présentent une corrélation significative avec les résultats de l'immunohistochimie (IHC) PD-L1 et sont supérieurs aux résultats de l'IHC PD-L1 quant à la sensibilité, la spécificité, la valeur prédictive positive, la valeur prédictive négative et la précision. En conséquence, la composition pour prédire la réponse d'un patient cancéreux à un inhibiteur de point de contrôle immunitaire, selon un aspect, est supérieure à l'IHC PD-L1 quant à la capacité de prédire la réponse à un inhibiteur de point de contrôle immunitaire chez un patient cancéreux (plus particulièrement, un patient atteint d'un cancer gastrique ou d'un carcinome urothélial), et la composition, en mesurant le niveau d'expression de l'ARNm CD274 au moyen de la RT-qPCR, présente comme avantages de réduire le temps nécessaire pour prédire la réponse à un inhibiteur de point de contrôle immunitaire et de permettre le diagnostic du cancer à un stade précoce.
Patent WO-2023146179-A1 (WO)
Title: Method for forming capping layer through selective growth of ruthenium and preparing euv pellicle with multilayer structure through same
Inventor: HAN HEE
IPC: G03F1/62
Filed: 2023-01-13
Abstract: Provided in one embodiment of the present invention is a method for preparing a pellicle membrane, which can minimize the loss of a light source while having thermal and durability characteristics. According to one embodiment of the present invention, a method for forming a capping layer through selective growth of ruthenium and preparing an EUV pellicle with a multilayer structure through same comprises: a first step in which a silicon wafer is prepared, and a first thin film layer is formed on the top surface of the wafer and a second thin film layer is formed on the bottom surface of the wafer; a second step in which a core layer transparently formed to enable the transmission of extreme ultraviolet rays is formed on the top surface of the first thin film layer; a third step in which a third thin film layer is formed on the top surface of the core layer and a fourth thin film layer is formed on the bottom surface of the second thin film layer; a fourth step in which a deposition pattern layer having convex portions formed by depositing oxide particles the top surface of the third thin film layer and a concave portion formed between the convex portions is formed on the top surface of the third thin film layer; a fifth step in which metal particles inserted into the concave portion are deposited on the top surface of the third thin film layer in a predetermined pattern so as to form a metal pattern layer, and the deposition pattern layer is removed; a sixth step in which a capping layer for reducing the reflectivity of the extreme ultraviolet rays incident on the core layer is formed on the top surface of the metal pattern layer; a seventh step in which a fifth thin film layer is formed on the top surface of the capping layer, and a sixth thin film layer is formed on the bottom surface of the fourth thin film layer; an eighth step in which patterning is performed on a thin film layer combination, which is a combination of the second thin film layer, the fourth thin film layer, and the sixth thin film layer; a ninth step in which the wafer is etched along the patterning shape of the thin film layer combination; and a tenth step in which a part of the first thin film layer is etched along the shape of the etched part on the bottom surface of the wafer, and the fifth thin film layer and the sixth thin film layer are removed through etching so that a pellicle thin film is formed.
Patent WO-2023200188-A1 (WO)
Inventor: JANG GEON WOO
IPC: F16C33/38
Filed: 2023-04-07
Abstract: 본 발명은 강도가 보강된 베어링 리테이너에 관한 것이다. 본 발명의 일 측면에 따른 베어링 리테이너는, 동일한 형상을 갖고 상호 결합하는 제1 리테이너 및 제2 리테이너를 포함하고, 제1 리테이너는, 반원 형상을 갖고 볼이 삽입되는 볼삽입홈과, 볼삽입홈 사이에 형성된 결합돌기와, 볼삽입홈 사이에 형성되고 결합돌기가 삽입될 수 있는 결합홈과, 제1 리테이너의 내주면에서 결합돌기 및 결합홈의 두께를 보강하는 보강돌기와, 제1 리테이너의 내주면에서 볼삽입홈에 대응하는 위치에 형성되는 내주면홈을 포함한다.