baber/WOPTO huggingface dataset:
Patent KR-20030025597-A (KR)
Title: Apc board dualizing method for asynchronous transfer mode switch
Inventor: LEE WON SEOK
IPC: H04L12/50
Filed: 2001-09-21
Abstract: PURPOSE: A method of duplexing APC(ATM Port Controller) boards of an ATM switch is provided to continuously switch a cell routing between an active APC board and a standby APC board when duplexing the APC boards, thereby increasing reliability and stability of the ATM switch. CONSTITUTION: An ATM switch sets a data structure of PVC and SVC for operating APCs in an active APC board, and copies the data structure of the PVC and the SVC in a standby APC board. The ATM switch copies a data structure of data related to an updated call processing to the standby APC board from the active APC board. The ATM switch copies substantial data of the copied data structure to each database. The active APC board updates the PVC and the SVC for ATM switching, and prepares to copy the data to the standby APC board. The active APC board divides the PVC and the SVC by packet units in response to a copy request of the standby APC board, and copies the PVC and the SVC to the standby APC board.
Patent KR-20030027993-A (KR)
Title: The vehicle information service system using the network and service method
Inventor: CHOI JONG HA
IPC: G08G1/09
Filed: 2001-09-27
Abstract: PURPOSE: A vehicle information service system is provided to provide various sorts of vehicle information to an individual or a transport company in a real time by constructing a system of unifying and managing vehicle information. CONSTITUTION: A main control center(11) comprises a communication server, a management server and a database related to a plurality of transport companies and individual subscribers. A plurality of vehicles are provided so that GPS information is issued from a vehicle information terminal where a GPS receiver is installed. A communication network transfers GPS information from the vehicles to the main control center(11) and transfers information to the main control center and a mobile terminal of an individual subscriber. A computer terminal(13a-13n) of a transport company is connected to an internet network, and is provided to search and confirm information from the main control center.
Patent KR-20010107806-A (KR)
Title: 살균 소독제 조성물이 함유된 화장지
Inventor: LEE HYUNG BEOM
Filed: 2001-10-04
Abstract: 일반가정, 병원, 식품회사, 제약회사, 화장품회사, 식당, 기숙사등과 같이 위생적 환경유지가 요구되는 장소에 매우 유용하게 사용될 수 있는 살균 소독제 조성물이 함유된 화장지에 대해 개시한다. 
     이 조성물은 물 96.5-99.98중량%, 계면활성제 0.01-0.5중량% 및 살균제 0.01-3.0중량%가 함유된다. 
     한 실시예로 살균 소독제 조성물은 물 98중량%, 계면활성제로서 트리톤 엑스-100 0.05중량% 그리고 살균제로서 3-아이도프로파르길-N-부틸카바메이트(3-iodopropargyl-N- butylcarbamate) 1.95중량%를 함유한다. 
     이와 같은 살균 소독제 조성물이 함유된 화장지는 여러곳에 서식 또는 발생하는 미생물에 대해 광범위하게 살균력을 발휘하며, 또한 장시간 살균력을 유지할 수 있고 인축에는 저독성이며 누구나 쉽게 사용할 수 있다.
Patent KR-20020035439-A (KR)
Inventor: IWASHITA YASUHARU
IPC: H01L21/027
Filed: 2001-10-31
Abstract: PURPOSE: To reduce labor necessary for setting or for re-setting or correcting the number of rotation of a substrate and improve throughput by automating the above works, when coating film is formed by using spin coating method. CONSTITUTION: In a coating unit, a plurality of recipes for a production line and recipes for measuring film thickness where the kind of coating liquid is identical but target film thickness is different are prepared. Among the recipes, recipes with the kind of coating liquid and the target film thickness corresponding to each other are linked by a common spin curve. A recipe for measuring film thickness is performed, and a correction value of the number of rotation is calculated for each film thickness measuring datum. Setting values for the number of rotation of the respective recipes can be corrected collectively, by using the correction value.
Patent KR-20030038859-A (KR)
Title: Writable optical disc recorded wobble address and, apparatus and method for detecting the wobble address thereof
Inventor: SEO SANG UN
IPC: G11B7/007
Filed: 2001-11-06
Abstract: PURPOSE: A recordable optical disk having a wobble address recorded therein, an apparatus and method for detecting the wobble address are provided to record a synchronous signal at the head of each sector within an error correction block having a predetermined recording size to enable addressing by sectors. CONSTITUTION: A wobble shaped synchronous signal is recorded in a recordable optical disk on which wobble shaped grooves are formed. The synchronous signal is recorded at the head of the first sector of an error correction block having a predetermined recording size. A wobble shaped synchronous signal distinguished from the synchronous signal is recorded at the head of another sector within the error correction block. Sixteen synchronous signals are recorded in the error correction block.
Patent KR-20020037441-A (KR)
Inventor: SAEKI TAKANORI
IPC: H03K5/13
Filed: 2001-11-13
Abstract: PURPOSE: A clock controlling method and a clock control circuit are provided to generate multi-phase clocks phase-synchronized to an external clock and a frequency multiplied clock signal without recourse to a feedback system. CONSTITUTION: A clock control circuit includes a delay circuit sequence provided with a plurality number of cascaded stages of delay circuit units, each made up of a first circuit(101-10N) receiving an input signal to output the input signal with a first delay time and a second circuit receiving an output signal from the first circuit(101-10N) to output the signal with a second delay time, a phase difference detection circuit(14) receiving an input clock fed to the delay circuit sequence and an output clock output from the delay circuit sequence to detect a time difference between a clock period of the input clock and a delay time of the delay circuit sequence as a phase difference of the received two clocks and a plurality of third circuits(121-12N-1), each receiving an output signal of the first circuit(101-10N) of each of the delay circuit units to delay and output transition edge of the output signal of the first circuit(101-10N) with respective different delay time, depending on a stage number of the delay circuit unit to which belongs the first circuit(101-10N) in the delay circuit sequence, in terms of time obtained on equally dividing the phase difference by the number of the delay circuit units in the delay circuit sequence, as a unit, wherein the third circuits(121-12N-1) output a plurality of output signals which make transition at a time interval corresponding to equal division of the clock period of the input clock by the number of the delay circuit units in the delay circuit sequence.
Patent KR-20030040857-A (KR)
Inventor: KIM CHANG GYUN
IPC: H01L29/732
Filed: 2001-11-16
Abstract: PURPOSE: A vertical transistor and its manufacturing method are provided to increase the current of a collector by lowering a resistance of the collector. CONSTITUTION: An N type epitaxial layer(12) is grown on an upper face of a P type substrate(2). An N- buried layer(4) is diffused between the P type substrate(2) and the N type epitaxial layer(12). A P++ buried layer(6) is diffused between the N- buried layer(4) and the N type epitaxial layer(12). An N+ well(16) is formed on the N type epitaxial layer(12) of an upper portion of the P++ buried layer(6). A P+ emitter region(18) is formed on the N+ well(16). An N+ base region(19) is formed on the N+ well(16) adjacent to the P+ emitter region(18). A P+ collector region(14) is formed on the N type epitaxial layer(12).
Patent KR-20030041336-A (KR)
Title: Luggage in Trunk Entering Preventing Structure into the Car Room
Inventor: KIM TAE HUN
IPC: B62D25/10
Filed: 2001-11-19
Abstract: PURPOSE: Structure for preventing room intrusion of luggage in a trunk is provided to improve passenger's safety by preventing luggage from intruding into the room of a vehicle, through an impact bar or an obstructing unit. CONSTITUTION: In trunk structure of a hatch-back vehicle, a trunk board(2) and a rear seat(1) are connected. In structure for preventing room intrusion of luggage in a trunk, impact bars(4) are installed to wheel houses(3) formed on both sides of the trunk board, through fixed brackets or one side of the trunk board is extended to the upper part and so an obstructing unit is formed and is fixed to the rear seat. Reinforcement is installed on the rear of the obstructing unit. Accordingly, the luggage in the trunk is prevented from intruding into the room of the vehicle by the impact bars or the obstructing unit.
Patent KR-20030041356-A (KR)
Title: Hip bath of using ultrasonic
Inventor: LEE CHUN WOONG
IPC: A61H35/00
Filed: 2001-11-19
Abstract: PURPOSE: A sitz bath using the supersonic waves is provided to break up and fire the subcutaneous fat, and accelerate the blood circulation and metabolize smoothly by heating the sitz bath water using a heater and then generating the supersonics having a desired frequency(about 60 to 70 kHz) by micro oscillating a million times per second into the water. CONSTITUTION: The sitz bath using the supersonic waves and comprising a body part(100) to have a space part(A) filled with water and a sitz bath plane(1) to put hip on is characterized in that a thermostatic lever(10) and an ultrasonic operated switch(20) are formed on one side of outer circumference of the body(100), a heater part to heat the water is formed on the inner circumference of the body(100), an ultrasonic oscillator is formed on the lower side of the body(100), a water level sensor is formed on the upper end plane inside the body(100), and a water level controlling hole is formed on other end of circumference of the body(100) wherein a checking valve carrying out the switching operation so as to maintain a water lever in a determined level is formed.
Patent KR-20020040635-A (KR)
Inventor: BAEK I NAM
IPC: C05F11/00
Filed: 2001-11-23
Abstract: PURPOSE: A mineral fertilizer containing mineral materials emitting far infrared rays is provided to supply oxygen to soil efficiently and forms plenty of antibodies. Therefore, the fertilizer makes crops be strong, tasty and fresh. CONSTITUTION: The mineral fertilizer is prepared by the following steps of: (i) preparing fungus by mixing 5-15pts.wt. of a mineral powder, such as phyllite, germanium, loess and elvan, 5-15pts.wt. of charcoal, 60-75pts.wt. of rice hulls, 0.1-15pts.wt. of at least one constituent selected from photosynthetic bacteria, lactic bacteria, yeast, and phytic acid, and fermenting at room temperature(25deg.C), where the mineral materials with 5-20micrometer wavelength at 40deg.C and more than 90% of radiation are obtained from sintering over 1300deg.C and grinding to more than 300mesh; (ii) preparing activated water by mixing 5-20pts.wt. of the mineral powder(>=2000mesh) with 100pts.wt. of water, and boiling at 100deg.C over 24 hrs.; (iii) mixing 5-15pts.wt. of the mineral powder, 5-15pts.wt. of charcoal, 10-30pts.wt. of fungus, 5-20pts.wt. of the activated water, 20-40pts.wt. of phosphoric acid, 5-15pts.wt. of potassium and 5-15pts.wt. of chitosan; (iv) fermenting at room temperature for 3-6days.
Patent KR-20020042446-A (KR)
Inventor: BAPTIST WYSS BROD
IPC: G04C3/00
Filed: 2001-11-27
Abstract: PURPOSE: An electronic chronograph watch is to be capable of indicating measured time on a small dial arranged in the periphery of a main dial by using an analog display. CONSTITUTION: Measured time is indicated with small hands(8,9,10) driven respectively by motors. The watch(1) includes a stem crown(11), which is used for adjusting the position of hands(3,4) indicating the present time by way of conventional mechanical means. The watch also includes at least two press buttons(12,13) which can access all functions of the chronograph part including the function adjusting the static position of the chronograph hands(8,9,10).
Patent KR-20030044310-A (KR)
Title: Item property managing method for mobile phone
Inventor: YOO HYEOK JUN
IPC: H04B1/40
Filed: 2001-11-29
Abstract: PURPOSE: A method for managing item attributes of a portable terminal is provided to add read attributes, read/write attributes, or hiding attributes to all items, and to enhance a security function, thereby enabling a user to efficiently store and manage important data. CONSTITUTION: A system inputs items from a portable terminal, sets the items to read/write attributes, and stores the set items in a memory(S16,S17). If a user presses a search menu, the system searches a desirous item among the set items(S6-S8). If an edit command is inputted for the searched item, the system decides whether the item is set to the read/write attributes, and if so, the system adds information inputted by the user, and if not, the system outputs a message informing the user that an edition is incapable(S13-S15). If the user presses the search menu as inputting a locking code, the system searches a desirous item, and if the user wants, the system changes attributes of the item(S9-S12). The system sets the searched item to hiding attributes according to read attributes, read/write attributes, or the inputted locking code(S2-S5).
Patent KR-20030048546-A (KR)
Title: A method for forming a capacitor of a semiconductor device
Inventor: KIM GYEONG MIN
IPC: H01L27/108
Filed: 2001-12-12
Abstract: PURPOSE: A method for forming a capacitor of a semiconductor device is provided to be capable of reducing the height of the capacitor while securing capacitance by forming HSGs(Hemispherical Shaped Grains) on an RuO2 layer using an RTP(Rapid Thermal Process). CONSTITUTION: A contact plug is formed on a semiconductor substrate(11), wherein the contact plug is formed by sequentially stacking a polysilicon layer(15), a Ti layer(17), a TiN layer(19). After forming an Ru layer on the contact plug, the Ru layer is transformed into an RuO2 layer by carrying out an in-situ plasma process. A storage electrode(25) is completed by forming HSGs on the RuO2 layer using an RTP. A dielectric layer(27) is then formed on the resultant structure. Preferably, the in-situ plasma process is carried out by using reaction gas of 5-1000 sccm and RF(Radio Frequency) power of 10-400 Watt at the pressure of 0.1-2 Torr for 5-300 seconds. Preferably, the RTP is carried out by using NH3 or H2 gas of 50-5000 sccm at the temperature of 400-700 °C for 30-120 seconds.
Patent KR-20030054871-A (KR)
Title: Power Control Apparatus of Computer System
Inventor: KANG SEONG CHEOL
IPC: G06F1/26
Filed: 2001-12-26
Abstract: PURPOSE: A power controller of a computer system is provided to automatically recognize an installation or a removal of a mini PCI(Peripheral Component Interconnect) device, and to cut off a battery power supplied for a slot of a corresponding PCI bus. CONSTITUTION: The device comprises a cover(10), a switch(20), and a controller(30). The cover(10) is open or close by a user for installing a mini PCI device or removing the mini PCI device at or from a computer system, for example, a keyboard cover or a LAN card cover in a portable computer. The switch(20) includes three contact points, a, b, c. If the cover(10) is closed, the contact point, c is connected to the contact point, a. If the cover(10) is open, the contact point c, is connected to the contact point, b. The controller(30) includes terminals, A, B, C. The terminal, B is connected to the first power source, Vcc1 and simultaneously connected to the contact point, b of the switch(20). The terminal, C is connected to the contact point, c of the switch(20) and simultaneously connected to a ground. The terminal, A is connected to the second power source, Vcc2. The controller(30) detects the open or closed state of the cover(10) according to a voltage level of a power supplied for the terminal, B.
Patent KR-20030055699-A (KR)
Title: A Method for Operating and Managing the ATM-PON system based on Web by TCP/IP
Inventor: HUH JAE DU
IPC: H04L12/66
Filed: 2001-12-27
Abstract: PURPOSE: A method for administrating a Web-based ATM-PON(Asynchronous Transfer Mode-Passive Optical Network) system by a TCP/IP(Transmission Control Protocol/Internet Protocol) is provided to configure an administration device in charge of administration of the ATM-PON system in a structure of client/server, so as to enable Web-based clients to administrate the ATM-PON system in any place by performing TCP/IP communication through a network. CONSTITUTION: A plurality of clients(10) deliver administration request messages to an operator manager(16) of a server(11). The operator manager(16) processes only a client authentication message among the request messages, and delivers remnant messages to an IPC(Inter Processor Communication) message processor(15). The IPC message processor(15) classifies the delivered request messages by functions to deliver the classified messages to corresponding function managers. Each function manager delivers processed results of the request messages and notification messages to the IPC message processor(15). The IPC message processor(15) delivers the processed results and the notification messages to the operator manager(16). And the operator manager(16) stores the delivered messages in a RAM(Random Access Memory)-resident database(18) and delivers the messages to the clients(10).
Patent KR-20030056448-A (KR)
Title: Method for manufacturing capacitor in semiconductor memory device
Inventor: KIM GYEONG MIN
IPC: H01L27/04
Filed: 2001-12-28
Abstract: PURPOSE: A method for manufacturing a capacitor of a semiconductor device is provided to be capable of improving step coverage and simplifying processes by depositing a TiN layer by in-situ using PECVD and LPCVD. CONSTITUTION: A barrier layer(11) is formed on a silicon substrate(10). A lower electrode(12) is formed on the barrier layer(11). After depositing a dielectric film(13) on the lower electrode, plasma treatment and annealing are sequentially carried out. The first upper electrode(14) made of a TiN layer is deposited on the dielectric film by PECVD(Plasma Enhanced CVD), and the second upper electrode(15) made of a TiN layer is deposited by LPCVD(Low Pressure CVD).
Patent KR-20010075156-A (KR)
IPC: A23L27/24
Filed: 1999-09-10
Abstract: 본 발명은 우수한 감미제로서 사용할 수 있는 N-[N-[3-(3-하이드록시-4-메톡시페닐)-3-메틸부틸]-L-α-아스파르틸]-L-페닐알라닌 1-메틸 에스테르 등의 신규한 N-알킬아스파르틸디펩타이드 에스테르 유도체(염의 형태로 있는 것을 포함한다)를 제공한다.  이러한 유도체는 저칼로리이며 또한 종래품과 비교하여 감미도가 우수하며 이를 함유하는 감미제나 식품 등을 제공할 수 있게 한다.
Patent KR-20010075213-A (KR)
Title: Drop on demand ink jet printing apparatus
IPC: B41J2/055
Filed: 1999-09-23
Abstract: Drop-on-demand ink jet printing apparatus comprises a nozzle on a nozzle axis; an ink chamber communicating with the nozzle, a piezoelectric actuating structure, said structure extending around the nozzle axis and extending in the direction of the nozzle axis; an actuating surface facing the nozzle, said structure being actuable to move said actuating surface in the direction of the nozzle axis to effect droplet ejection through the nozzle; and electrodes for applying an actuating electric field to the actuating structure.
Patent KR-20010080138-A (KR)
Title: Biaxially oriented sheeting for electrical insulation with improved shrinkage at elevated temperatures
IPC: H01B3/44
Filed: 1999-10-26
Abstract: A biaxially oriented polypropylene film is described. The n-heptane-insoluble content of the film has a chain isotacticity index, measured by 13-C-NMR spectroscopy, of at least 95%. In particular, the film should have the lowest possible shrinkage (transverse shrinkage and longitudinal shrinkage) at elevated temperatures. In addition, a process for the production of the polypropylene film and its use is described.
Patent KR-20010080447-A (KR)
IPC: B21B3/00
Filed: 1999-11-02
Abstract: 알파 황동(아연이 39중량% 이하인 구리/아연 합금) 원료 합금은 니켈, 주석 및 인의 첨가량을 제어하고 있다. 니켈 및 주석의 조합은 상승한 온도에서의 응력이완에 대한 합금의 저항성을 증가시킨다. 그 결과, 본 발명의 합금으로 형성된 스프링 콘택트는 초기에 부과한 응력의 높은 백분률을 상승온도 즉, 125℃ 내지 150℃의 범위에서 대등한 강도의 다른 황동 합금 보다 더 오랜 시간 동안 유지한다.
Patent KR-20010080704-A (KR)
IPC: H01R11/22
Filed: 1999-12-06
Abstract: 클립커넥터(A)는, 절연성의 하우징(1)과, 이 하우징(1)으로부터 돌출하는 복수의 단자(2)를 구비하고 있다. 
     하우징(1)은, 프린트기판 등의 지지부재에 맞접하는 외면(1a)을 갖고 있다. 
     이 외면(1a)은, 요철상이며, 복수의 돌출부(12)와, 복수의 퇴피부(13)를 갖고 있다. 
     각 단자(2)는, 평탄부(20a)와 굴곡부(20b)를 갖고 있다. 
     각 평탄부(20a)에는 관통구멍(22)이 형성되어 있으며, 이 구멍을 통하여, 상기 지지부재와 외면(1a)을 고착하는 수지가 제공된다.
Patent KR-20010101331-A (KR)
Title: 스피커 시스템
Inventor: KIM JOO YOUNG
IPC: H04R1/28
Filed: 1999-12-30
Abstract: 스피커 시스템(10)은 스피커 유니트(14)와, 스피커 유니트(14)가 그 일단부에 부착되는 혼(12)을 구비한다.  혼(12)의 길이 방향 일단부 부근에는 그 일단부를 차단하기 위한 제1 멤브레인(24)이 부착된다. 다른 단부 부근에는 제2 멤브레인(26)이 설치된다. 제1 멤브레인(24)과 제2 멤브레인(26)에 의해 밀폐된 공간(30)이 형성된다. 이 밀폐공간(30)에는 공기보다 무거운 기체가 수용된다.
Patent KR-20010102268-A (KR)
IPC: H04B7/005
Filed: 2000-12-07
Abstract: 무선 코드 분할 다중 접속(CDMA) 통신 시스템에서 사용되는 슬롯 통신 모드는 일반 프레임 사이에 산재되는 슬롯 프레임을 포함하고, 각각의 슬롯 프레임은 상이한 후보 동작 주파수에서의 송신에 대한 신호 품질의 측정이 이동국에 의해 이루어지는 동안의 슬롯과, 그 슬롯에 선행하는 리딩 프레임 부분과, 그 슬롯에 후속하는 트레일링 프레임 부분을 포함한다. 슬롯 모드를 사용함으로써 비트 에러 율(BER)의 증가를 완화시키기 위해서, 리딩 및 트레일링 프레임 부분에 있는 데이터의 확산 인자(SF)는 일반 프레임에 있는 데이터의 확산 인자보다 더 큰 값으로 설정된다. 그러한 프레임 부분에 있는 데이터의 확산 인자의 증가는, 거기에서 다른 BER 완화 인자로서 전력 레벨의 증가를 동반할 수 있다.
Patent KR-20020012560-A (KR)
IPC: H04N7/26
Filed: 2001-02-20
Abstract: There is disclosed a wireless communication device capable of receiving an incoming RF data signal and generating therefrom a base layer data stream and at least one enhancement layer data stream. The wireless communication device comprises: 1) a base layer decoder, 2) at least one enhancement layer decoder, 3) a variable mode receiver for demodulating the RF incoming RF data signals in a plurality of physical modes, such as BPSK, QPSK, QAM, and the like, and at a plurality of code rates and 4) a receiver mode controller for controlling the physical modes of the variable mode receiver. The receiver mode controller causes a first demodulated output signal of the variable mode receiver to be transferred to the base layer decoder when the variable mode receiver is operating in a first physical mode and causes a second demodulated output signal of the variable mode receiver to be transferred to the at least one enhancement layer decoder when the variable mode receiver is operating in a second physical mode. There also is disclosed a second wireless communication device for transmitting an outgoing RF data signal comprising a base layer data stream and at least one enhancement layer data stream. The second wireless communication device comprises: 1) a base layer encoder, 2) at least one enhancement layer encoder, 3) a variable mode transmitter for modulating an input signal in a plurality of physical modes and at a plurality of code rates to produce the outgoing RF data signal; and 4) a transmitter mode controller for controlling the plurality of physical modes of the variable mode transmitter. The transmitter mode controller causes the variable mode transmitter to transmit a base layer output signal from the base layer encoder in a first physical mode and causes the variable mode transmitter to transmit at least one enhancement layer output signal from the at least one enhancement layer encoder in a second physical mode.
Patent KR-20020011982-A (KR)
IPC: B01J23/755
Filed: 1999-11-19
Abstract: 니켈 촉매의 존재하에 시안화물 원료와 화학식 4(여기서, R은 Cl 또는 Br이다)의 화합물의 반응, 및 대응하는 5-시아노 화합물, 즉 시탈로프람의 단리를 포함하는 시탈로프람의 신규한 제조방법.
Patent KR-20010112484-A (KR)
IPC: H01S3/225
Filed: 2000-04-25
Abstract: 레이징 가스 혼합물를 재순환시키기 위한 탄젠샬 팬(200)-컷오프 어셈블리는 단부에서 단부로 단계식으로 원주상 위치에 있어 변동하는 블레이드 부재(264)및/또는 테이퍼진 양극 어셈블리(120)를 가지고 있다.  블레이드 부재들(264)의 수는 양 단부 사이에서 일정하거나 또는 변동될 수 있다.  블레이드 부재들(264)의 원주상 위치는 양 단부 사이에서 단조적으로 또는 가역적으로 변화될 수 있다.  블레이드 부재(264)는 허브 부재(262)의 수 및 배치를 최적으로 선택함으로써 강화되어 팬의 고유 진동수를 제어한다.  탄젠샬 팬을 형성하는 방법은 주조 및 고형 블록으로부터의 기계가공을 포함한다.  모놀리식 구조부가 전형적으로 전자빔 용접에 의해 결합될 수 있다.   주조, 용접 및 기계가공 공정은 어떠한 부가적인 오염물도 도입시키지 않고 진행된다.  생산된 탄젠샬 팬은 기계적 강성, 정밀한 공차 및 낮은 오염물 농도를 가진다.  블레이드 부재(264)는 에어포일 형상으로 형성될 수 있다.