baber/WOPTO huggingface dataset:
Patent KR-20020040002-A (KR)
Title: method for coating treatment of the aluminium or the same alloy surface
Inventor: KIM BOK MUN
IPC: C25C1/00
Filed: 2000-11-23
Abstract: PURPOSE: A method for manufacturing an anodized film is provided which reduces manufacturing cost by omitting etching process and setting a voltage during the second electrolytic treatment higher than a voltage during the first electrolytic treatment when forming two colors on the surface a strip or receptacle of aluminium or aluminum alloy. CONSTITUTION: The method for coating a film on the surface of aluminium or aluminum alloy comprises the steps of forming a first color(1) by performing a first electrolytic treatment on the surface of a strip or receptacle of aluminum or aluminum alloy; masking the first color formed surface of the strip or receptacle of aluminum or aluminum alloy so as to obtain certain patterns on the first color formed surface thereof; performing a second electrolytic treatment on the upper surface of the first color formed strip or receptacle that is not masked using a voltage higher than a voltage during the first electrolytic treatment, thereby forming a second color(8) different from the first color; and forming the first and second colors(1,8) by removing the masking(2). The method for coating a film on the surface of aluminium or aluminum alloy comprises the steps of forming a first color(1) by performing a first electrolytic treatment on the surface of a strip or receptacle of aluminum or aluminum alloy, and coating a dye having a different color on the first electrolytically treated surface of the strip or receptacle; masking the coated first color formed surface of the strip or receptacle of aluminum or aluminum alloy so as to obtain certain patterns on the coated first color(1) formed surface thereof; performing a second electrolytic treatment on the upper surface of the coated first color formed strip or receptacle that is not masked using a voltage higher than a voltage during the first electrolytic treatment, thereby forming a second color(8) different from the coated first color; and forming the first and second colors(1,8) by removing the masking(2).
Patent KR-20020041167-A (KR)
Inventor: JANG HYEON BOK
IPC: H01L21/203
Filed: 2000-11-27
Abstract: PURPOSE: A sputtering apparatus is provided to automatically control a pressure of a gas injection/exhaust pipe by using an electromotive valve. CONSTITUTION: A sputtering apparatus comprises a chamber(10) performing a sputtering, a gas injection/exhaust pipe(32) injecting a gas to the chamber(10), a first valve(26) injecting the gas to the gas injection/exhaust pipe(32), a second valve(24) exhausting the gas from the chamber(10) to the injection/exhaust pipe(32), an electromotive valve(40) for controlling the pressure of the gas injection/exhaust pipe(32) connected between the chamber(10) and the gas injection/exhaust pipe(32), and a controller(42) controlling the chamber(10), the first valve(26), the second valve(24) and the electromotive valve(40). By using the electromotive valve(40), the pressure of the gas injection/exhaust pipe(32) is automatically controlled.
Patent KR-20020042157-A (KR)
Title: method of reducing centerline segregation of continuous casting slab
Inventor: CHO JAE WAN
IPC: B22D11/10
Filed: 2000-11-30
Abstract: PURPOSE: A method for reducing center segregation of a continuous casting slab is provided to economically reduce the center segregation using continuous caster segments ordinarily used without introduction of a separate soft reduction equipment as a method for improving demerits of soft reduction technology. CONSTITUTION: In a method for reducing center segregation by reducing a roll gap of segments(1) when producing a slab(2) in the continuous casting process, the method for reducing center segregation of a continuous casting slab is characterized in that an upper part of the segments(1) is slantly installed so that a roll gap at inlet of segments(3) in which a steel billet is entered in a length direction of casting by inclining the upper part of the segments(1) is linearly decreased succeeding a roll gap at outlet of former segments(4), and positions where segments are inclined so as to decrease roll gaps are that reduction of a roll gap is started at the segment of a position where a solid ratio of the steel billet fs=0.3, reduction of the roll gap is completed at the segment of a position where a solid ratio of the steel billet fs=0.8, and roll gaps of the segments thereafter are equally maintained.
Patent KR-20020043088-A (KR)
Title: Oil pump rotor strucutre of oil supplying system
Inventor: HUH GON
IPC: F04C2/10
Filed: 2000-12-01
Abstract: PURPOSE: A structure of rotor of oil pump of oil supply device is provided to easily assemble the oil pump and to remove clearance. CONSTITUTION: An inner rotor(10) and outer rotors(20) have separate ends to form variable rotors(11,21). Each of the variable rotors is elastically supported by elastic springs(12,22) to be pushed outward to be closely attached to an inner wall of an oil pump housing(100) and an inner surface of a cover(110). Each of the variable rotors is formed to be bulgy and hollow and shaped opposite to each other. The variable rotors are movable up and down by guide pins(13,23) inserted to the inner rotor and the outer rotors.
Patent KR-20020043128-A (KR)
Title: Fabrication process on sapphire wafer for the epitaxial film growth of GaN based optoelectronic devices
Inventor: KIM GEUN JU
IPC: H01L21/304
Filed: 2000-12-01
Abstract: PURPOSE: A polishing process of a sapphire wafer for growing a thin film of a nitride semiconductor and a method for fabricating a polishing apparatus are provided to reduce efficiently a process time and improve reliability of an optical element by performing a CMP(Chemical Mechanical Polishing) process according to various steps. CONSTITUTION: A diamond plate(4) is used for performing a polishing process. A polishing apparatus is formed with a polishing control panel, a wafer jig compression bar, a wafer attachment jig(3), the diamond plate(4), an air pressure terminal, and a body. A compressor and a cooling pump are used as subordinate elements. A polishing solution is circulated within the polishing apparatus. A wafer jig is rotated around a compression support bar. The polishing apparatus is used for performing a diamond plate grinding process, a cooper plate polishing process, a CMP process, and a chemical etch process.
Patent KR-20020043976-A (KR)
Title: A fuzzy control method of crawler excavator
Inventor: YOO IK JU
IPC: E02F9/20
Filed: 2000-12-05
Abstract: PURPOSE: A purge control method for an engine and a pump of an excavator is provided to make the control of an optimum output system possible. CONSTITUTION: The purge control method for an engine and a pump of an excavator using an overload table and a load inferential value table to be suitable for specificities of an excavator comprises the steps of: detecting a pump pressure value and an engine speed value of an excavator whenever regular interrupt occurs; computing changes of the detected pressure value and the speed value; judging the relative gravity of load according to the computed results; and control an engine speed and a pump pressure according to the judged result.
Patent KR-20020047846-A (KR)
Title: Method For Injecting The Source/Drain Inon Transistor
Inventor: KWAK BYEONG IL
IPC: H01L21/336
Filed: 2000-12-14
Abstract: PURPOSE: A source/drain ion implantation method is provided to prevent a damage of a field oxide by respectively and sequentially implanting ions on source/drain regions. CONSTITUTION: After forming a field oxide(24) on a semiconductor substrate(22), a dummy gate(30) and a hard mask(32) are sequentially formed on the field oxide(24). By depositing and etching an oxide on the hard mask(32), spacer layers(34) are formed on both sidewalls of the dummy gate(30). After depositing a first photoresist(36) on a defined region of the hard mask(32) of the dummy gate(30) so as to overlap an N+ source/drain region estimated area, a P+ source/drain region(26) is formed by implanting doped dopants into a P+ region. As the same, a P+ source/drain region(28) is formed by implanting doped dopants into an N+ region, after depositing a second photoresist to overlap a P+ source/drain region estimated area.
Patent KR-20020046692-A (KR)
Title: method for forming capacitor semiconductor device
Inventor: PARK JUN U
IPC: H01L21/8242
Filed: 2000-12-15
Abstract: PURPOSE: A method for fabricating a capacitor of a semiconductor device is provided to increase capacitance, by guaranteeing a sufficient margin in forming a negative capacitor and by arbitrarily controlling the size of a capacitor having the same design rule. CONSTITUTION: A nitride layer(22) and an oxide layer are sequentially formed on a semiconductor substrate(21). A hard mask layer is formed on the oxide layer. A photoresist layer is applied on the hard mask layer and is patterned to define a capacitor region. The hard mask layer, the oxide layer and the nitride layer are selectively removed to expose a predetermined portion of the surface of the semiconductor substrate by using the patterned photoresist layer as a mask so that the capacitor region is formed. A spin-on-glass(SOG) layer is formed on the entire surface of the semiconductor substrate including the capacitor region. The SOG layer is wet-etched. The photoresist layer is eliminated. A polysilicon layer is formed on the entire substrate of the silicon substrate including the capacitor region.
Patent KR-20010067439-A (KR)
Title: Vacuum processing apparatus for semiconductor process
Inventor: AMANO KENJI
IPC: H01L21/00
Filed: 2000-12-19
Abstract: PURPOSE: To provide a vacuum processor which facilitates maintenance in a processing chamber and mounting as well as dismounting of loads in the lid. CONSTITUTION: The vacuum processor 10 comprises a processing chamber 60 and processing mechanisms 74, 77, 80 which treat a substrate S as specified, where the processing chamber 60 has a chamber body 61, a lid 62 detachably provided on this chamber body 61, and a detachment mechanism 63 which detaches this lid 62, and the detachment mechanism 63 has slide mechanisms 64a, 64b, 65a, 65b, 69, and a rotational mechanism 70 which rotates the lid 62 on the horizontal axis.
Patent KR-20020049965-A (KR)
Title: Protection against heat element of solenoid valve for food storing apparatus
Inventor: PARK IN GYU
IPC: F16K31/02
Filed: 2000-12-20
Abstract: PURPOSE: A radiating member of a solenoid valve for a food reservoir is provided to improve energy efficiency of the food reservoir by reducing radiating amount of the solenoid valve. CONSTITUTION: A radiating member for a solenoid valve of a food reservoir comprises a cover installed on a solenoid valve; a radiating member(100) formed as a larger circular plate than an upper face of the cover; a hole(110) mounted in the middle of the radiating member; and a bolt inserted to the hole by being arranged on an upper portion of the cover. The radiating member is formed as a slit shape(120) or a louver shape to improve radiating efficiency. A wall unit is formed on an outer circumference of the radiating member. The radiating member is arranged on an upper portion of the cover by the bolt. Thereby, the radiating member for the solenoid valve of the food reservoir improves energy efficiency of the food reservoir by reducing radiating amount of the solenoid valve. Moreover, the radiating member for the solenoid valve of the food reservoir improves refrigerating performance by preventing radiating from being transferred into the coolant.
Patent KR-20020051628-A (KR)
Inventor: KIM YEONG UN
IPC: C12M1/00
Filed: 2000-12-23
Abstract: PURPOSE: An apparatus for supplying a growth agent is provided, thereby nutrients are automatically supplied to facilitate the growth of microorganisms and consequently to absorb organic materials while disposing various organic wastes. CONSTITUTION: The apparatus for supplying a growth agent comprises: an aeration tank(700) which transfers waste water from a dissolved air flotation tank(600) to a sedimentation tank(800) wherein undegradable oils, and COD and BOD can be treated; the sedimentation tank(800) which precipitates the solid content of the waste water; a transportation pump(30) which transports the precipitated sludge; a ware box(10) which checks the amount and status of the transferred sludge; an urea-supplying device; an ammonium phosphate-supplying device; a first zone pH meter(20) which detects the hydrogen concentration of the inlet of the aeration tank(700); an eighth zone pH meter which detects the hydrogen concentration of the outlet of the aeration tank(700); a pH meter-controlling apparatus which converts pH values from pH meters into current signals; a calculator which calculates the current difference between two current signals; and an AC inverter which operates motors using the output current from the calculator.
Patent KR-20020055734-A (KR)
Title: Method and system for exit poll by using mobile telecommunication devices
Inventor: HONG JONG CHEOL
IPC: H04W4/02
Filed: 2000-12-29
Abstract: PURPOSE: A method and a system for exit poll by using mobile telecommunication devices are provided to perform an exit poll exactly and rapidly by transmitting a short message to users who cast a vote using a wireless data network based on user position movement information according to voting areas being supplied from a position information service center and creating an elected candidate state according to voting areas in real time. CONSTITUTION: Position information of a user according to voting areas is received from a position information service center(301,302). A short message is created for an exit poll according to corresponding voting areas based on the position information of a user and the short message is transmitted to a short message service center(303). The transmitted short message is transmitted to a wireless modem or a wireless communication device of a corresponding user using a wireless data network(304). User response data with respect to the short message are transmitted to an exit poll server(305). An elected candidate state is created according to voting areas based on the transmitted response data(306).
Patent KR-20020056207-A (KR)
Title: Method of manufacturing a transistor in a semiconductor device
Inventor: JUNG SEONG MUN
IPC: H01L21/24
Filed: 2000-12-29
Abstract: PURPOSE: A method for manufacturing a transistor of a semiconductor device is provided to reduce gate resistance by forming a space after forming a silicide layer of a source/drain region of a gate. CONSTITUTION: A gate oxide(12), a polysilicon(13) and insulation layer(14) are sequentially formed on a semiconductor substrate(11). They are patterned to form a gate. A first spacer(15) is formed on the gate patterned side wall and a junction region(16) is formed on the substrate. The spacer is removed and a silicide layer is formed on the exposed polysilicon(13) side wall and on the junction region. A second spacer(18) is formed on the gate patterned side wall at the side of the silicide layer(17).
Patent KR-20020057279-A (KR)
Title: RDLL circuit for using at high frequency
Inventor: KWON GI SEOP
IPC: G11C8/00
Filed: 2000-12-30
Abstract: PURPOSE: A registered delay locked loop circuit used in radio frequency is provided to remove a coupling between a rising edge and a falling edge in radio frequency by dividing clocks inputted into a delay monitor. CONSTITUTION: A 2-frequency dividing circuit(10) divides inputted clock signals(Rclk,Fclk) by 2 and outputs the divided clock signals. A delay monitor(20) receives the divided clock signals from the 2-frequency dividing circuit(10), delays the divided clock signals by using a unit delay, and performs a function of a bidirectional shift register. A clock merge portion(30) receives an output of the delay monitor(20) and merges the output of the delay monitor(20). Two rows are added to the clock merge portion(30). The number of the unit delay increases as much as two times by the number of the added rows.
Patent KR-20010022287-A (KR)
Title: New 2,3-benzodiazepine derivatives
IPC: A61P25/28
Filed: 1998-07-28
Abstract: 2,3-Benzodiazepines of formula (I), their stereoisomers and acid addition salts,wherein the variables have the meaning given in the specification, and pharmaceutical compositions containing them which are suitable for treating conditions associated with muscle spasms, epilepsy as well as acute and chronic forms of neurodegenerative diseases are disclosed.
Patent KR-20010023232-A (KR)
IPC: D01F6/62
Filed: 1998-09-03
Abstract: A polyester resin composition is disclosed, comprising poly(trimethylene terephthalate) in a proportion of 90 wt% or more, wherein the resin composition has an intrinsic viscosity of from 0.4 to 2 and contains a phosphorus compound corresponding to from 10 to 250 ppm in terms of the amount of phosphorus element, a cyclic dimer in an amount of not exceeding 3 wt% and a bis(3-hydroxypropyl)ether in an amount of 2 wt% or less. This polyester resin composition has excellent spinning stability and high melt stability and is used for the production of a poly(trimethylene terephthalate)-based fiber having excellent whiteness and high tenacity.
Patent KR-20010023707-A (KR)
IPC: C04B/
Filed: 1998-07-16
Abstract: 본 발명은 다이아몬드 입자로 부터 다이아몬드-실리콘 카바이드-실리콘 복합제를 제조하는 방법에 관한 것으로서, 이 방법은 작업시편을 성형하는 단계, 작업시편을 가열하고 가열온도 및 가열시간을 조절함으로써 소정량의 흑연이 다이아몬드 입자의 흑연화에 의해 생성되고 그로인해 중간체 보디를 생성하는 단계 및 실리콘을 중간체 보디에 침윤하는 단계를 포함한다.  본 발명은 또한 이러한 방법에 의해 제조된 다이아몬드-실리콘 카바이드-실리콘 복합체에 관한 것이다.
Patent KR-20010031262-A (KR)
Title: 구리막을 폴리싱한 후 반도체기판을 세정하는 방법 및 장치
IPC: H01L21/3205
Filed: 1998-10-06
Abstract: 구리막을 화학기계적으로 폴리싱한 후 반도체기판을 세정하는 세정용액, 방법 및 장치를 설명한다. 본 발명은 구리층을 폴리싱한 후 반도체기판의 표면을 세정하기 위해 산성의 pH환경에서 탈이온수, 유기화합물 및 불화화합물을 혼합하여 만든 세정액을 제공한다. 본 발명에 의해 구리를 화학기계적으로 폴리싱한 후 반도체기판을 세정함으로써 브러시로딩과 표면 및 표면밑 오염과 관련된 문제점을 완화시킨다.
Patent KR-20010032831-A (KR)
Title: 지폐처리장치
IPC: G07F1/04
Filed: 1999-10-04
Abstract: 본 발명의 지폐처리장치는 한 쌍의 회전드럼(22, 23) 사이에, 스태커슈트(51)의 움직임과 연동하여 지폐안내 슬릿(22b, 23b) 내에 삽입된 지폐(31) 중 지폐반려 방지레버(32) 쪽에 위치하는 부분을 스태커(20) 쪽으로 누르는 스태커레버(53)를 구비하며, 이로 인해 구겨진 지폐를 대량으로 스태커 내에 수용하여도 지폐의 뭉쳐짐을 가급적 발생시키지 않도록 한다.
Patent KR-20010033292-A (KR)
IPC: C08J9/14
Filed: 1998-12-11
Abstract: 본원에서는 압출된 치수 안정성 독립 기포 알케닐 방향족 중합체 발포체가 기술되어 있다.  당해 발포체는 알케닐 방향족 단량체 단위를 50중량%를 초과하는 양으로 포함하는 알케닐 방향족 중합체 물질을 포함한다.  당해 발포체의 밀도는 약 16 내지 약 64kg/㎥이다.  당해 발포체의 횡단면 두께는 15mm 이상이다.  당해 발포체는 제1 발포제, 1,1,2,2-테트라플루오로에탄 약 70 내지 약 95중량% 및 제2 발포제 약 30 내지 약 5중량%(발포제 조성물의 총몰량 기준)를 포함하는 발포제 조성물을 함유한다.  제2 발포제는 필수적으로 1,1,1,2-테트라플루오로에탄, 이산화탄소, 질소, 아르곤 및 물로 이루어진 그룹으로부터 선택된다.  또한, 본원에서는 당해 발포체를 제조하는 방법이 기술되어 있다.
Patent KR-20010040316-A (KR)
Title: 비디오 립 동기 지연을 제공하는 장치 및 그 방법
IPC: H04N7/52
Filed: 1999-01-07
Abstract: 패킷화된 입력 데이터 스트림과 디지털화 된 표준 선명 입력 신호 중 하나를 처리하는 디지털 수신기는, 대응하는 표준 선명 비디오 신호 처리와의 동기화를 유지하기 위해 표준 선명 오디오 입력 신호 처리시에 지연을 제공한다.
Patent KR-20010041104-A (KR)
Title: 광섬유 패치 패널
IPC: G02B6/44
Filed: 1999-01-29
Abstract: 본 발명은 다수의 광섬유 연결기를 지지하기 위한 패치 패널에 관한 것으로서, 연결기가 콤팩트하게 배열된 제 1위치로부터 연결기의 접근이 용이한 보다 이격된 제 2위치로 이동할 수 있는 패치 패널에 관한 것이다.
Patent KR-20010041129-A (KR)
Title: 화분 특이적 프로모터
IPC: C12N5/10
Filed: 1999-01-22
Abstract: 본 발명은, 화분 내 프로모터로서 작용을 하는, 옥수수 내 ZmC5 유전자의 프로모터 서열 또는 이의 변이체 또는 단편을 포함하는 재조합 핵산에 관한 것이다.    프로모터의 DNA 서열은 도 5에 도시되어 있다.    본 발명의 프로모터 서열을 포함하는 형질전환된 식물, 형질전환 방법 뿐만 아니라 발현 카세트 및 발현 시스템이 또한 청구되어 있다.    핵산은 특히 화분의 형질전환 뿐만 아니라 웅성 불임 식물들 및/또는 잡종들의 제조에 사용될 수 있다.
Patent KR-20010041147-A (KR)
Title: 분자 생물학적 분석 및 진단을 위한 진보된 능동 장치 및 방법
IPC: B01L3/00
Filed: 1999-02-11
Abstract: 미소위치 어레이에 하전 생체 재료를 유리하게 수집하여 제공할 수 있는 다양한 구조를 사용하는 능동 생체 조작용 장치 및 그 제조 방법이 개시된다.  일 실시예에서, 장치는 수집 전극에서 어레이로의 지향 및 이송을 돕는 집속 전극을 포함한다.  바람직하게는, 하나 이상의 중간 이송 전극이 사용되며, 더 바람직하게는 수집 전극과 어레이 사이에서 크기가 단조롭게 감소하는 이송 전극이 사용되어, 전류 밀도 불일치를 감소시키는 것이다.  다른 특징에 있어서, 분석될 재료를 함유하는 용액의 수용을 제공하는 플로우 셀이 장치에 사용된다.  또다른 실시예에서, 동심 링 설계가 제공된다.  각종 플립플롭 실시예가 개시된다.
Patent KR-20010041718-A (KR)
IPC: C08G65/26
Filed: 1999-02-25
Abstract: The invention relates to new, improved double metal cyanide (DMC) catalysts for preparing polyetherpolyols by polyaddition of alkylene oxides to starter compounds containing active hydrogen atoms, wherein the catalyst contains a double metal cyanide compound, an organic coordination ligand and 5 to 80 wt. %, with respect to the amount of catalyst, of an ethylene oxide polyether with a number average molecular weight greater than 500. The new, improved catalysts have a greatly increased reactivity for polyetherpolyol preparation.
Patent KR-20020065006-A (KR)
Title: a clamp's safety device for poke-crane's bucket
Inventor: CHOI SEUN MOOK
IPC: E02F3/36
Filed: 2001-02-05
Abstract: PURPOSE: A safety device of a clamp for attaching an excavator bucket is provided to prevent accidents caused by the separation of a bucket. CONSTITUTION: The safety device of a clamp for attaching an excavator bucket comprises: a main clamp body(1) composed of a connecting part(10) connected to an excavator boom arm by a shaft and a fastening part(20) coupled with a bucket; a fixed hook(22) installed to the front lower part of the fastening part(20); operating hooks(30) coupled to the rear part of the fixed hook(22); a rod of a hydraulic cylinder coupled between the operating hooks(30) by a pin to couple or dismantle the bucket; a safety device installed on the rear of the connecting part(10) to limit the operation of the operating hooks(30); and a bearer(40) extended upward on a movable shaft(34) of the operating hook(30) and provided with a hanging groove(42) to limit the reverse movement of the operating hooks(30).
Patent KR-20020068585-A (KR)
Title: Method of reducing a mount of calculation needed for pitch search in vocoder
Inventor: KOO JEONG HOE
IPC: G10L19/12
Filed: 2001-02-21
Abstract: PURPOSE: A method of reducing the amount of calculation required for pitch search in a vocoder is provided to decrease the amount of calculation needed for pitch search by restricting a section that requires correlation calculation for pitch search. CONSTITUTION: When a voice signal is inputted(202), the voice signal is passes through an analysis filter and a synthesis filter(204,206). The voice signal that passed through the filters passes through a cubing filter(208). The cubing filter emphasizes a high-amplitude portion of the voice signal but suppresses a low-amplitude portion of the voice signal. The voice signal that passed through the cubing filter passes through a clipping filter that removes a portion of the voice signal lower than a threshold value(210). A high-amplitude region of the voice signal that passed through the clipping filter is determined(212), and pitch delay and pitch gain are obtained.
Patent KR-20010085614-A (KR)
Title: Vector register file with arbitrary vector addressing
Inventor: ADEMU HOKENEKU
IPC: G06F17/16
Filed: 2001-02-26
Abstract: PURPOSE: A vector resistor file using random vector addressing is provided to optimize performance in all operation modes in the same structure, so minimizing a program size. CONSTITUTION: The system for processing operation to use data vectors respectively containing plural data elements comprises a vector data file(206) provided with plural storage elements for storing the data elements of the data vectors. A pointer array(202) is connected to the vector data file by a bus. The pointer array is provided with plural entries and each of entries identifies at least one storage element in the vector data file. At least one storage element stores at least one data element of the data vector and at least one storage element identified by the specified entry has the arbitrary start address of the vector data file to at least one entry of the pointer array.
Patent KR-20010104616-A (KR)
Title: 슬립 제한 차동 장치
IPC: F16H47/00
Filed: 2001-03-02
Abstract: 슬립 제한 차동 장치(limited slip differential)는 캐리어(carrier) 회전축을 중심으로 상기 캐리어 내에 배치되는 복수의 리세스(recess)를 갖춘 캐리어로서, 여기서 각각의 리세스가 회전축에 실질적으로 평행한, 일반적으로 서로 대향하는 제 1 및 제 2 모서리를 갖는 측면 개방 부분을 구비하는 캐리어와, 각각의 제 1 및 제 2 모서리를 따라 배치되는 챔퍼(chamfer)와, 복수의 캐리어 리세스 각각의 내부에 배치되는 유성 기어로서, 리세스의 측면 개방 부분으로부터 돌출하는 부분을 갖는 유성 기어를 구비한다.