baber/WOPTO huggingface dataset:
Patent KR-20140026865-A (KR)
Title: Fuel cell systen and ship having the same
Inventor: SUNG YONG WOOK
IPC: B63H21/38
Filed: 2012-08-23
Abstract: A fuel cell system and a ship provided with the fuel cell system are provided. The fuel cell system, which is installed on an liquefied natural gas (LNG) carrier, according to the present invention comprises a cargo tank which has LNG stored therein and boil-off gas (BOG) stored on the upper layer part of the LNG stored therein; a pressurizing tank which is connected through a first transfer line to the cargo tank and which stores the BOG transferred through the first transfer line from the cargo tank at constant pressure; and a fuel cell stack which is connected through a second transfer line to the pressurizing tank and to which the BOG, which is stored through the second transfer line in the pressurizing tank, is supplied. [Reference numerals] (230) Monitoring unit; (240) Regulator; (270) Methane supply unit; (280) Gas analyzer
Patent KR-20140028646-A (KR)
Title: Descaling apparatus for slab and descaling method
Inventor: KANG KI SOO
IPC: B21B45/04
Filed: 2012-08-30
Abstract: Provided in the present invention is a descaling apparatus for slab, including: a main descaling unit for descaling the surface of a slab which is heat-treated and transferred; and a sub descaling unit which, according to the existence of remaining scales on the surface of the descaled slab, removes the scales by spraying high-pressure water onto the locations of the scales, wherein the pressure of the sprayed water can vary according to the size information of the remaining scales. Moreover, the present invention also provides a descaling method.
Patent KR-20140031626-A (KR)
Title: Oil-water separator for recovering lubricating oil
Inventor: PARK CHAN HEE
IPC: B01D29/11
Filed: 2012-09-05
Abstract: Disclosed is an oil-water separating device for recovering lubricating oil which enables users to easily and conveniently replace a filter for filtering foreign substances in oil and water, and prevents the blockage of a discharging flow path discharging inert gas. The present invention comprises an oil-water separating device with a foreign substance filter filtering the foreign substances from the lubricating oil. The oil-water separating device comprises the following: a first storage unit which includes the foreign substance filter; a second storage unit which forms a space outside the first storage unit; and a cap with an opening and closing type structure capable of being combined to and separated from the oil-water separating device, which is capable of supporting the foreign substance filter when the cap is assembled to the oil-water separating device, and opens and closes one side of the first storage unit.
Patent KR-20140032698-A (KR)
Title: 고로의 용손 스테이브 보수방법
Inventor: PAI SANG DEUK
IPC: C21B7/06
Filed: 2012-09-07
Abstract: 본 발명은 고로의 철피 내측에 설치되고 내부에 냉각수 통로가 형성되는 스테이브의 용손 부위를 보수하는 방법에 있어서, (a) 상기 냉각수 통로에 공급되는 냉각수를 차단하는 단계와, (b) 상기 냉각수 통로가 용손 부위에 인접한 보수 영역과 냉각수가 유동되는 유동 영역으로 구획되도록 냉각수 통로의 내부로 구획 부재를 삽입하는 단계와, (c) 상기 보수 영역으로 금속 보수재를 충진시키는 단계와, (d) 상기 유동 영역에 냉각수를 공급하는 단계를 포함하는 것을 특징으로 한다. 
본 발명에 의하면, 고로의 용손된 스테이브의 냉각수 통로에 구획 부재를 삽입하여 신규 냉각수 유동로를 형성하고 상기 냉각수 유동로의 외부를 액상의 금속 보수재로 충진시켜 스테이브의 수명을 연장시킬 수 있는 효과가 있다.
Patent KR-20140036077-A (KR)
Title: Shotcrete slope protection and construction method using sacks
Inventor: OH MIN YEOUL
IPC: E02D17/20
Filed: 2012-09-14
Abstract: The purpose of the present invention is to provide methods for protecting and constructing a shotcrete slope using a sack capable of stabilizing a slope and making the slope green by making soil to be bound by applying a pressure to soil of a slope after organizing a slope, making multiple anchor holes on the slope to have the predetermined diameter and depth, fixing and installing an anchor body in the anchor hole, installing a reinforcing material in the anchor body, installing a mold for pouring shotcrete, a sack, and a lattice bar or a steel bar on the anchor body, pouring and curing the shotcrete in the mold for pouring shortcrete, greening between the mold for pouring shortcrete and the sack, removing the mold for pouring shorcrete, introducing tension force to a PC steel wire of the anchor body, and installing a cap on the top of the anchor body. To achieve the purpose, according to the present invention, the methods for protecting and constructing a shotcrete slope using a sack include: a step of organizing a slope; a step of making multiple anchor holes on the slope to have the predetermined diameter and depth; a step of fixing and installing an anchor body in the anchor hole; a step of installing a reinforcing material by hanging the reinforcing material on the anchor body; a step of installing a mold for pouring shotcrete, a sack, and a lattice bar or a steel bar on the anchor body; a step of pouring and curing the shotcrete in the mold for pouring shortcrete; a step of greening between the mold for pouring shortcrete and the sack; a step of removing the mold for pouring shorcrete; a step of introducing tension force to a PC steel wire of the anchor body; and a step of installing a cap on the top of the anchor body.
Patent KR-20140038091-A (KR)
Title: 죽순 순대 및 이의 제조방법
Inventor: PARK KI YEOUNG
IPC: A23L19/00
Filed: 2012-09-20
Abstract: 본 발명은 죽순 순대 및 이의 제조방법에 관한 것으로서, 더욱 상세하게는 돼지창자 대신에 죽순을 외피로 이용하여 위생적이면서도 잡냄새를 제거하여 기호도를 향상시킬 수 있는 죽순 순대 및 이의 제조방법에 관한 것이다.  
본 발명의 죽순 순대는 죽순을 삶아 내부의 막을 제거하여 형성한 죽순외피와, 상기 죽순외피의 내부에 채워진 소를 구비한다. 그리고 죽순 순대의 제조방법은 a)껍질이 제거된 죽순을 물에 삶는 단계와, b)상기 죽순의 내부에 형성된 막을 제거하여 죽순외피를 수득하는 단계와, c)상기 죽순외피 내부에 소를 채워 넣는 단계와, d)상기 소를 채워 넣은 후 상기 죽순외피의 입구를 막은 다음 가열하여 익히는 단계를 포함한다.
Patent KR-20140038709-A (KR)
Inventor: JOUNG WHI DONG
IPC: B65D85/804
Filed: 2012-09-21
Abstract: 본 발명은, 링크 구조를 이용한 음료용 원재료 수용 캡슐로부터 음료를 추출하는 장치에 관한 것으로서, 본 발명은, 프레임; 상기 프레임의 하부에 형성되며 음료용 원재료 수용 캡슐을 수납하는 캡슐 홀더; 상기 캡슐 홀더의 상부에 위치하며 상기 캡슐 홀더에 수납되는 상기 음료용 원재료 수용 캡슐에 유체를 공급하기 위한 유체공급 유닛; 서로 회동 가능하게 연결되는 제1 링크와 제2 링크를 갖고, 상기 제1 링크의 단부는 상기 프레임에 회동 가능하게 결합되고, 상기 제2 링크의 단부는 상기 유체공급 유닛에 연결되며, 상기 제1 링크의 단부를 기준으로 한 상기 제2 링크의 단부의 승강운동에 의하여 상기 유체공급 유닛이 상기 캡슐 홀더에 가압되거나 상기 캡슐 홀더로부터 이격될 수 있는 링크 부재; 및 상기 제1 링크의 단부의 높이를 조절하기 위한 높낮이 조절 부재;를 구비한다.
Patent KR-20140040918-A (KR)
Title: Sulfur solidified molding fabrication system and method thereby
Inventor: CHOI CHANG SIK
IPC: C01B17/02
Filed: 2012-09-27
Abstract: The present invention relates to a sulfur solidification molded product manufacturing system and method which forms an intended molded product by receiving the mixture of coal floor materials and sulfur. The sulfur solidification molded product manufacturing system comprises a continuous mixing unit mixing raw materials containing coal floor materials and sulfur, and a sulfur gas collecting unit collecting sulfur gas generated in the continuous mixing unit and delivering the sulfur gas to the continuous mixing unit. The continuous mixing unit includes a heat source part for heating sulfur within the mixture at a temperature greater than the melting point. Accordingly, the present invention is able to consecutively manufacture fluidic mixtures by using the mixtures of solid powders as raw materials while manufacturing molten mixtures by melting specific raw materials among the mixtures. [Reference numerals] (100) Mixing part; (200) Supply part; (300) Heat source part; (400) Sulfur gas collecting unit; (500) Coal floor material drying unit; (600) Coal floor material pulverizing unit; (700) Forming part; (800) Heat collecting unit; (900) Pulverizing unit for recycling; (AA) Application as heat source; (BB,CC) Heat; (DD) Product; (EE) Defective product
Patent KR-20140047346-A (KR)
Title: Depositing apparatus and method for manufacturing organic light emitting diode display using the same
Inventor: LEE SANG SHIN
IPC: H05B33/10
Filed: 2012-10-12
Abstract: The present invention relates to a deposition device comprising a deposition source which receives deposition materials and a plurality of jet nozzles which is arranged in a first direction on one side of the deposition source and jets the deposition materials to a substrate facing the jet nozzles. The deposition source is divided into a central area and an outer area of both ends of the central area based on the first direction. The jet nozzle is arranged in the central area. The jet nozzle comprises a first jet nozzle and a second jet nozzle. A surface constituting an end part of the first jet nozzle is perpendicular to a substrate surface. A surface constituting the end part of the second jet nozzle forms an inclination angle in the first direction with the substrate surface and faces towards the outside direction of the deposition source. According to embodiments of the present invention, a shadow phenomenon, which penetrates the deposition materials between a deposition mask and the substrate by increasing the angle of incidence of the deposition materials, can be suppressed; a deposition margin can be reduced; and deposition uniformity and deposition efficiency can be increased, thereby facilitating implementation of a high-resolution display of an organic light emitting diode display device.
Patent KR-20140047971-A (KR)
Title: Propulsion system and rocket having the same
Inventor: PARK BYEONG YEOL
IPC: F41F3/052
Filed: 2012-10-15
Abstract: The present invention provides a propulsion unit including a combustion pipe including a propellant inside; a nozzle jetting combustion gas generated in the ignition of the propellant by being installed on the rear end of the combustion pipe; and a nozzle separation unit which mounts the nozzle on the combustion pipe by being individually connected to the combustion pipe and the nozzle and separates the nozzle from the combustion pipe as at least a part is melted when reaching a pre-set temperature.
Patent KR-20140051646-A (KR)
Inventor: KIM SOO HYUCK
IPC: H01L21/027
Filed: 2012-10-23
Abstract: 집적회로 소자 제조용 현상 장치는 기판 상에 도포한 포토레지스트를 포토레지스트 패턴으로 형성하기 위한 집적회로 소자 제조용 현상 장치에 있어서, 상기 포토레지스트 상에 현상액을 분사하는 공정이 이루어지는 현상 챔버; 상기 현상 챔버와 연결되고, 상기 현상 챔버로부터 이송되는 기판을 세정하기 위한 공정이 이루어지는 세정 챔버; 및 상기 현상 챔버로부터 상기 세정 챔버로 이송이 이루어지는 상기 기판의 이송 경로를 기준으로 상기 현상 챔버의 출구 부위에 배치되고, 상기 포토레지스트 상에 분사된 현상액을 부분적으로 제거하도록 상기 기판과 이격 거리를 유지하도록 구비되는 블레이드를 포함할 수 있다.
Patent KR-20140052234-A (KR)
Title: Greenhouse for mariculture and plant cultivation using inner heat
Inventor: KWON HEOG CHUL
IPC: A01G9/24
Filed: 2012-10-23
Abstract: The present invention relates to a greenhouse for mariculture and plant cultivation using waste inner heat. The greenhouse for mariculture and plant cultivation using waste inner heat includes a water tank for cultivation which is installed in the greenhouse and is filled with culturing water for culturing fish; a plantation for culturing crops, which is installed on the water tank for cultivation; an air heat exchange unit which forcibly circulates the upper air of the greenhouse, makes the air pass through the water tank for cultivation, and cools the air by heat exchange with the culturing water; a heat exchange coil causing the heat exchange with the culturing water in the water tank for cultivation through a heat medium; a circulation pump for forcibly circulating the heat medium heat-exchanged with warm water in the heat exchange coil; a heat pump for heating the warm water in a warm water tank or for cooling cool water in a cool water tank through heat exchange with the heat medium circulated by the circulation pump; and a heating coil or a cooling coil for heat-exchange between the culturing water in the water tank for cultivation and the warm water in the warm water tank or the cool water in the cool water tank. By the present invention, the productivity of fish and food crops is improved by culturing fish and crops in one greenhouse, and the temperature for the cultivation of fish and crops is maintained by using waste heat in the greenhouse, thereby improving energy efficiency.
Patent KR-20140056668-A (KR)
Title: Method for manufacturing solder on pad and flip chip bonding method used the same
Inventor: CHOI KWANG SEONG
IPC: H01L21/60
Filed: 2012-10-30
Abstract: Disclosed is a manufacturing method for a solder-on-pad. The manufacturing method comprises a step of producing a substrate having a pad; a step of forming a solder bump maker including a resin and solder power, on the substrate; a step of collecting the solder power on the pad by heating the solder bump maker at a temperature lower than the melting point of the solder power; and a step of removing the resin.
Patent KR-20140058129-A (KR)
Title: Manufacturing method for iron powder
Inventor: CHANG DUCK RYE
IPC: B22F9/30
Filed: 2012-11-06
Abstract: The present invention relates to a method for manufacturing iron powder for the heat source of a thermal battery, comprising the steps of manufacturing an iron-containing solution by adding and agitating metal salt iron compound to fatty acid solvent; forming uniform iron precursors by agitating and heating the iron-containing solution; manufacturing iron oxide powder by pyrolyzing the iron precursors in the air; and obtaining zero-valent iron nanopowder by reducing the iron oxide powder in the atmosphere of reduction. The zero-valent iron powder manufactured by the method has uniform nanoscale particles and can form a molded body that does not include impurities, has excellent ignition properties and has a sufficient space for inserting oxygen during molding.
Patent KR-20140060387-A (KR)
Title: Composite for lightweight ceramic ware comprising talc and manufacturing method of the lightweight ceramic ware using the composite
Inventor: PEE JAE HWAN
IPC: C04B33/04
Filed: 2012-11-09
Abstract: The present invention relates to a clay composition for lightweight ceramic ware including talc and a manufacturing method of lightweight ceramic ware using the clay composition, wherein the composition includes clay and 30-110 wt% of talc relative to 100 wt% of clay and water content is 20-45%. According to the present invention, lightweight ceramic ware can be manufactured by forming pores in a sintering step using talc emitting gas at high temperatures. The lightweight ceramic ware reduces weight since specific gravity decreases due to the formation of pores.
Patent KR-20140070687-A (KR)
Inventor: DO SEON GIL
IPC: A23L33/00
Filed: 2012-11-09
Abstract: 본 발명은 남가새 추출물을 포함하는 비만 치료, 개선 및 예방용 조성물에 대한 것이다.
Patent KR-20140010850-A (KR)
Title: Top down method and building construction using the same
Inventor: LEE JIN SEOP
IPC: E02D29/045
Filed: 2012-11-09
Abstract: A plurality of unit precast concrete (PC) columns manufactured in a unit length is used by being connected in a top down construction method according to the present invention so that the unit PC column is shorter and lighter than a single column corresponding to the depth of an underground construction layer. Therefore, the top down construction method can reduce construction costs by reducing a burden of equipment and facilitating transportation. Moreover, a first unit PC column is fixed by a holder after being inserted into a column insertion hole, and the equipment lifts and stands only a second unit PC column so that the burden of the equipment can be reduced.
Patent KR-20140062605-A (KR)
Title: Apparatus and application for rehabilitation training
Inventor: KIM CHANG HWAN
IPC: A61H1/02
Filed: 2012-11-13
Abstract: The present invention relates to an apparatus for rehabilitation training and a method for rehabilitation training using the same and, more particularly, to an apparatus for rehabilitation training that guide a rehabilitant to conduct rehabilitation training step by step in accordance with the rehabilitation state of the rehabilitant; and a method for rehabilitation training using the same. The apparatus for rehabilitation training according to an embodiment of the present invention comprises: a supporting member including an extension part having a first rotating joint formed thereon, and having a second rotating joint formed at an end; an auxiliary link member combined with the second rotating joint and having integrally formed links extending in two or more directions; a variable link member combined with the first rotating joint and a third rotating joint to be able to rotate and varying length thereof according to the operation of a motor; a random signal generator for generating a random signal so that the auxiliary link member connected to the variable link member and the supporting member can rotate along an arbitrary track; and a controller for controlling the motor so that the auxiliary link member can rotate continuously according to the random signal generated by the random signal generator.
Patent KR-20140062757-A (KR)
Title: Panel and method for repairing a road
Inventor: KIM SEONG KYU
IPC: E01C23/10
Filed: 2012-11-15
Abstract: The present invention relates to a road repairing panel and a road repairing method using the same and, more specifically, a road repairing panel which is provided to repair only a damaged part when a part of an asphalt concrete pavement or of a cement concrete pavement is damaged, and a road repairing method using the same. The road repairing panel is molded in advance at the fixed thickness and size, formed to have the same surface materials and properties as those of a road being repaired, and used to simply repair the road. The road repairing method according to the present invention is provided to form a repairing space by removing a damaged part of a road surface, to trim a road repairing panel to fit the repairing space, and to insert the trimmed road repairing panel into the repairing space, thereby quickly repairing the damaged part of a road. The present invention provides the road repairing panel having the same size and material as a road surface being repaired and comprising a body molded into a fixed size, and the road repairing method comprising: a step for removing a damaged part of the road surface and forming a repairing space; a step for trimming the road repairing panel, which is molded with the same size and material as those of the road surface being repaired, to fit a damaged part; a step for coating the upper part of a base layer inside the repairing space with an adhesive; and a step for inserting the trimmed panel into the repairing space and for pressurizing the upper part of the panel to be integrally attached to the base layer.
Patent KR-20140067272-A (KR)
Title: The rice cake for mitigating diabetic and its manufacturing method
Inventor: LEE HYUN JUN
IPC: A23L7/10
Filed: 2012-11-26
Abstract: The present invention relates to rice cake to alleviate diabetic symptoms and a manufacturing method thereof. The rice cake to alleviate diabetic symptoms can treat and alleviate obesity and diabetes by eating yacon together which is good to treat diabetes, and artichokes and burdocks which are good to treat obesity when a diabetic casually eats rice cakes as a snack. To achieve this, the present invention provides the manufacturing method for rice cakes which effectively alleviates diabetic symptoms by adding good materials to treat diabetes and artichokes and conducting obesity-curing treatment at the same time. The manufacturing method for rice cakes mixes 36-44 wt% of yacon powder to effectively alleviate diabetic symptoms, 9-11 wt% of burdocks, 9-11 wt% of artichokes, 0.2-0.4 wt% of salt, 2.0-2.4 wt% of licorice and 7-8 wt% of honey into 27-33 wt% of rice powder to effectively treat obesity.
Patent KR-20130062251-A (KR)
Title: Lithographic method and apparatus
Inventor: ENGBLOM PETER DAVID
IPC: G03F7/20
Filed: 2012-11-30
Abstract: PURPOSE: A lithography method and an apparatus are provided to reduce the contrast of radiation diffracted from an assist feature and to prevent the printing of an assist feature image. CONSTITUTION: A support structure supports a patterning device. The patterning device provides the pattern to the cross section of a radiation beam. A projection system(PL) projects patterned radiation beam onto the target part of a substrate. A light phase control device(PME) is located in the pupil plane of the projection system. A controller applies a phase change to the radiation diffracted from the assist feature.
Patent KR-20140074752-A (KR)
Inventor: CHOO JEONG JOO
IPC: B01D71/34
Filed: 2012-12-10
Abstract: 본 발명은 폴리비닐덴플루오라이드(PVDF) 중공사막에 관한 것으로, 보다 상세하게는 2중 방사노즐로도 비대칭 구조를 형성할 수 있으며, 코팅층을 따로 형성하지 않고도 비대칭 구조를 형성할 수 있어 박리되지 않고 세척 후 코팅층의 기공크기가 변할 염려가 없으며, 종래의 공법으로 제조된 PVDF 중공사막에 비해 기계적 강도가 우수하여 역세척과 같은 막 세정에 효과적으로 이용할 수 있고, 수투과성을 현저히 향상시키면서도 우수한 배제율을 동시에 만족하는 여과 효율이 우수한 PVDF 중공사 분리막에 관한 것이다.
Patent KR-20140075230-A (KR)
Inventor: KO KYOUNG JIN
IPC: H02P9/02
Filed: 2012-12-11
Abstract: The present invention relates to a system for controlling a superconducting generator, which comprises: the superconducting generator which includes a rotor with a dual field wire; an exciter which includes a rotor with a dual armature wire for supplying power to the dual field wire; a rectifier which rectifies a three-phase AC voltage generated in the dual armature wire of the exciter to a DC voltage required for the dual field wire of the superconducting generator; a DC-DC converter which converts the DC voltage rectified by the rectifier into a DC voltage required for controlling the dual field wire of the superconducting generator; and a resistor which reduces a time constant of the dual field wire of the superconducting generator.
Patent KR-20140076815-A (KR)
Title: 픽셀 기반 비정상 움직임 검출 방법 및 장치
Inventor: KO JONG GOOK
IPC: G06T7/20
Filed: 2012-12-13
Abstract: 본 발명은 CCTV 영상감시 서비스에서 비정상 행동인식 기술에 관한 것으로 본 발명에 따른 픽셀 기반 비정상 움직임 검출 방법은 입력 받은 영상의 각 픽셀들에 대한 모션 벡터 정보를 생성하는 단계; 상기 생성된 모션 벡터 정보를 이용하여 상기 영상 내의 움직임 정보를 생성하는 단계; 및 상기 생성된 움직임 정보를 미리 결정된 또는 미리 학습된 기준 움직임 정보와 비교 하여 비정상적인 움직임의 존재 여부를 판단하는 단계를 포함한다. 본 발명의 따르면 입력 영상의 픽셀 정보 분석 기반의 비정상 행동 탐지를 통해 CCTV 영상에서 갑작스런 사건/사고로 많은 사람들이 비정상적으로 움직이는 비정상적 상황을 인식 할 수 있다.
Patent KR-20140078029-A (KR)
Inventor: LEE HEE RANG
IPC: H04R1/10
Filed: 2012-12-14
Abstract: 본 발명은 각종 핸드폰을 보호 할 수 있는 케이스와 이어폰을 따로 갖고 다니는 불편함을 해결하고자 고안하였다. 각 종 기기를 보호하기 위해서 케이스를 자율 변환 가능하게 만들었고, 이어폰을 잃어버리는 것을 방지하고자 이어폰 수납함을 결합하였다. 핸드폰 케이스는 4개의 와이어를 이용하여 고정을 시키며 케이스를 이용하여 휴대성과 편리성을 향상 시킬 수 있도록 이어폰 케이스를 만들어 줄이 엉키거나 꼬이는 것을 방지할 수 있어 편리성을 강조한 핸드폰용 케이스를 만들었다.
Patent KR-20140077383-A (KR)
Title: Ladder assembly install method for flare system
Inventor: SUN JIN KOOK
IPC: B63B35/44
Filed: 2012-12-14
Abstract: The present invention relates to a method for installing a ladder assembly of a flare system and, more specifically, a method for installing a ladder assembly of a flare system which uses bolts to assemble a hand rail and a ladder onto multiple scaffolds after integrating the scaffolds beforehand in the height direction of a tower structure when the flare system is manufactured. The method comprises a scaffold manufacturing step for manufacturing scaffolds and integrating the scaffolds with a flare system in advance when the flare system is manufactured; a ladder-fixing step for fixing a ladder on the scaffolds in the height direction of the flare system; a first handrail fixing step for assembling a scaffold handrail on the circumference of the scaffolds by using bolts; and a second handrail fixing step for fixing a ladder handrail on the circumference of the ladder by using bolts.
Patent KR-20140079117-A (KR)
Inventor: KOO GWAN YOUNG
IPC: H05K13/00
Filed: 2012-12-18
Abstract: The present invention discloses a jig plate supporting apparatus which support a jig plate of a circuit printing apparatus on which an object to be printed is joined. The jig plate supporting apparatus includes: a fixing block which is installed and fixed on the circuit printing apparatus; a drive block which is installed on the top of the fixing block to be able to rotate in multi-directions, and includes an upper surface on which the jig plate is installed; and a fixing means which fixes the drive block on the fixing block. On an upper side of the fixing block, a first hemisphere surface is concavely formed to have a constant radius. On a lower side of the drive block, a second hemisphere surface is convexly formed to have the same radius with the first hemisphere surface. The second hemisphere surface of the drive block slides while contacting with the first hemisphere surface of the fixing block. Therefore, the drive block can rotate in multi-directions.