baber/WOPTO huggingface dataset:
Patent KR-20000031891-A (KR)
Title: Method for etching semiconductor device
Inventor: HWANG JAE HUI
IPC: H01L21/306
Filed: 1998-11-11
Abstract: PURPOSE: A method for etching a semiconductor device is provided to improve an etching characteristic to reduce cost by reducing the amount of gas while reducing a micro-loading for etching under a low pressure and to minimize byproduct generated by N2 gas and obtain a vertical profile. CONSTITUTION: A method for etching a semiconductor device is formed by a first etching step for etching a second conductive film until exposing the surface of a first conductive film by using etching gas including He and N2 and a second etching step for etching the first remained conductive film until exposing an insulating film. Herein, the first etching step is operated by using 2HeN2 gas, 23sccm of Cl2 gas, and 4sccm of SF6 gas under a pressure for 2mTorr. And the HeN2 gas is formed by mixing He gas and N2 gas in an intended ratio.
Patent KR-20000031951-A (KR)
Title: Method for producing thin film type device for adjusting optical path capable of preventing point defect of pixel
Inventor: LIM YONG GEUN
IPC: G02F1/015
Filed: 1998-11-11
Abstract: PURPOSE: A method is to prohibit point defect of pixel by preventing occurrence of a phenomenon that an actuator is stuck onto active matrix while a device for adjusting optical path is operating. CONSTITUTION: A method for producing a thin film type device for adjusting optical path comprises: a step of forming and patterning a first sacrificing layer(160) on an active matrix(100) containing a transistor(120) and processing the first sacrificing layer with hydrogen fluoride; a step of forming a first layer, a lower electrode layer, a second layer and an upper electrode layer on the active matrix and the first sacrificing layer and patterning the second layer and the lower electrode layer to form an actuator(210); a step of patterning the first layer to form a supporting unit; a step of depositing a second sacrificing layer(300) on the supporting unit and the actuator; a step of patterning the second sacrificing layer to form a post hole; a step of forming a mirror(260) and a post(250) on the post hole and the second sacrificing layer; a step of removing the first and the second sacrificing layers; and a step of forming an anti-sticking film(350) between the active matrix and the supporting unit.
Patent KR-20000033890-A (KR)
Title: Head operating apparatus of removable cartridge dirve
Inventor: YEON CHEOL SEONG
IPC: G11B5/48
Filed: 1998-11-26
Abstract: PURPOSE: A head operating apparatus of removable cartridge drive is to properly control an opening width of the cartridge door and allow the usage of plural heads structure capable of corresponding to high capacity. CONSTITUTION: A head operating apparatus of removable cartridge drive comprises: a driver(100) for driving disk mounted in a removable cartridge; a head(112); a swing arm(110) coupled to the head, disposed perpendicularly to the shortest radius line at the mid point of the shortest radius of disk and having a minimum movement width in horizontal direction; and a head locker(120) for ascending or descending the head and which is vertically driven by a solenoid(122) installed below the driver. The swing arm is driven by a voice coil motor(114).
Patent KR-19990024066-A (KR)
Title: 폐타이어 고무 칩을 이용한 블록 및 그 제조방법
IPC: C04B18/22
Filed: 1998-11-26
Abstract: 본 발명은 폐타이어 고무 칩을 이용한 블록에 관한 것으로, 고무 칩 100중량부와 폴리우레탄 결합제 3-10 중량부, 안료 0.5-5중량부로 구성된 상부 탄성층과 모래 100중량부, 고무 5-20 중량부 및 폴리우레탄 결합제 10-15중량부로 구성된 하부 지지층으로 이루어지는 것을 특징으로 한다.
Patent KR-19990045652-A (KR)
Title: 기록매체 반송기구
IPC: G11B17/051
Filed: 1998-11-27
Abstract: (과제) 종래, 반송수단을 대피 장소에 두기 위하여 별도의 전용부재를 필요로 하기 때문에 부품수가 많아진다.     또한, 전용부재를 수납하기 위한 공간을 확보할 필요가 있다. 
     (해결수단) 반송롤러 (R) 가 압출레버 (14) 의 주행부 (14b) 에 압접되어 있으며, 디스크를 삽입하면 반송롤러 (R) 가 반시계방향으로 회전하여, 압출레버 (14) 의 주행부 (14b) 상을 구름운동하기 때문에, 반송수단 (5) 이 X1 측으로 이동하여 (나) 의 위치로 된다.     또한, 디스크를 반출할 때에는, 반송롤러 (R) 가 시계방향으로 회전하여, 반송수단 (5) 이 X2 측으로 이동함으로써, 기록매체 구동부에 접근한 (가) 의 위치로 되기 때문에, 디스크 (D) 를 확실하게 끼워서 지지한다.     즉, 반송수단 (5) 은 반송롤러 (R) 의 회전방향의 차이로 디스크에 접근하거나 또는 멀어질 수 있기 때문에, 다른 전용부재를 필요로 하지 않고, 부품수를 삭감할 수 있으며, 동시에 전용 공간도 불필요해질 수 있다.
Patent KR-20000038189-A (KR)
Title: Apparatus for generating air bubbles for washing machine
Inventor: CHO IN SU
IPC: D06F17/12
Filed: 1998-12-04
Abstract: PURPOSE: An apparatus for generating air bubbles for a washing machine is provided to improve the washing effect of a washing machine by using generating air bubbles. CONSTITUTION: A water discharging tube(101) is connected to the lower portion of a tub(11) to discharge the washing water in the tub(11). A circulating pump(100) is connected to the water discharging tube(101) to discharge the washing water in the tub(11). A supplying tube(102) connects the circulating pump(100) to a venturi tube(200), and a venturi tube(200) to another venturi tube(200). An injection tube(104) is formed in a venturi tube(200). A circulating tube(103) is connected to one side of the venturi tube(200).
Patent KR-20000038236-A (KR)
Title: Method for manufacturing hetero-junction bipolar transistors
Inventor: PARK SEONG HO
IPC: H01L29/78
Filed: 1998-12-04
Abstract: PURPOSE: A fabrication method of HBT(heterojunction bipolar transistor) is provided to improve an emitter ohmic contact property and simplify the manufacturing process. CONSTITUTION: An HBT fabrication method comprises the following steps. An HBT epitaxial substrate sequentially formed a semiconductor(1), a buffer layer(2), a sub-collector(3), a collector(4), a base(5), an emitter(6), and emitter cap layers(7,8) is prepared by conventional processes. By using double mask layers(9,10) having different etching selectivity, surface protrusion patterns are formed on the HBT epitaxial substrate. The lower mask layer(9) made of a photoresist layer, and the upper mask layer(10) composed of a silicon nitride. Thereby, the surface protrusion pattern has s reverse T-shaped structure due to differency of etching selectivity. Using the surface protrusion pattern having reverse T-shaped structure, an emitter ohmic electrode is formed.
Patent KR-20000043166-A (KR)
Title: Syndrome calculator using sampling clock
Inventor: PARK HWAK DONG
IPC: G06F9/00
Filed: 1998-12-28
Abstract: PURPOSE: A syndrome calculator using a sampling clock is provided to reduce a full speed of a system by establishing a whole structure as a parallel structure, and to simplify a structure of the syndrome calculator by establishing the full structure as a shift register structure. CONSTITUTION: A syndrome calculator using a sampling clock generates a syndrome start signal and a syndrome enable signal from a deinterleave of a forward error correction(FEC), to operate the syndrome calculator, and receives a syndrome end signal, to output syndrome data from a control block of a recording sector(RS) decoder. The syndrome calculator comprises a driver(100), a comparator(200), a logic multiplying operator(250), a holder(300), and an alpha value storage device(400). The driver(100) generates a system drive signal by receiving the syndrome enable signal, responding to a reset signal. The comparator(200) outputs a first comparison signal comparing a preset first constant and the system drive signal, and a second comparison signal comparing a preset second constant and the system drive signal, respectively. The logic multiplying operator(250) operates the second comparison signal and the syndrome start signal in a logic multiplying. The holder(300) holds the system drive signal during a specific time, by responding to the second comparison signal. The alpha value storage device(400) stores an alpha value by a Galois field operation, and outputs a first, second, and third alpha value by responding to the system drive signal.
Patent KR-20000043314-A (KR)
Title: Method for automatically selecting music of cd player
Inventor: KIM IN CHEOL
IPC: G11B27/02
Filed: 1998-12-28
Abstract: PURPOSE: An automatic music selection method of a CD player is provided to improve the convenience of use by playing back a music with a selected list of each disc in a memory. CONSTITUTION: A selection of a music selecting key is decided after insertion of a disc. In inputting a music selecting key, the absolute time of a final track in the inserted disc is detected. According to the absolute time, a selected list of the inserted disc is decided. If the selected list is stored, the selected list is displayed. Playing back according to the sequence of the displayed selected list is decided. If the playing back is decided, the music is played back by the sequence of the list. If a new list is to be selected or the disc is not one having a stored selected list, the selection is performed via a key input unit.
Patent KR-20000043730-A (KR)
Title: Method for accessing file system in real-time parallel processing program
Inventor: JEON UN BAE
IPC: G06F9/00
Filed: 1998-12-29
Abstract: PURPOSE: A method for accessing a file system in a real-time parallel processing program is provided to reduce a bottleneck phenomenon of the entire file system caused by accessing the file system to prevent an entire process capacity deterioration, by comparing numbers of activated data processing threads with processing results standing by storing processes to store appropriate amounts in the file system at a time. CONSTITUTION: A method for accessing a file system applied to a computer system comprises the steps of: making a data processing thread generating/managing thread(BOSS) generate a data processing thread(WORKER) according as input data is generated, and pass over the input data to identify whether a request for setting up a lock(LOCK) for a synchronization variable is generated from the WORKER; if so, making the BOSS set up the LOCK, and compare data processing result numbers with WORKER numbers stored in a memory, according to the WORKER's request types; if the numbers of the data processing result and the WORKER are equal, storing the data processing result in the file system, and canceling the LOCK to go to the making the BOSS and the WORKER step; if the numbers of the data processing result and the WORKER are not equal, canceling the LOCK to go to the making the BOSS and the WORKER step.
Patent KR-20000044159-A (KR)
Title: Signal receiving device of digital television with asynchronous timing recovery circuit
Inventor: KIM DAE SUN
IPC: H04N5/44
Filed: 1998-12-30
Abstract: PURPOSE: A signal receiving device of a digital television with an asynchronous timing recovery circuit is provided to recover timing by using data instead of segment synchronization data. CONSTITUTION: A signal receiving device of a digital television with an asynchronous timing recovery circuit comprises a tuner portion(100), a crystal oscillation portion(310), an analog/digital conversion portion, an interpolator(410), a match filter(420), an error controller(430), and a numerical control oscillator(440). The tuner portion generates an intermediate frequency signal y tuning a high frequency signal. The crystal oscillation portion generates a sampling signal with a constant frequency. The analog/digital conversion portion converts the intermediate frequency signal to a digital signal. The interpolator generates a synchronous sample value by interpolating the digital signal. The match filter generated a timing correction signal. The error controller controls an interpolated number of the interpolator.
Patent KR-20000044275-A (KR)
Title: Method for measuring time used in mobile wireless terminal
Inventor: LIM WAN SU
IPC: H04B1/40
Filed: 1998-12-30
Abstract: PURPOSE: A method for measuring a time used in a mobile wireless terminal is provided to measure the time used in a mobile wireless terminal, by measuring used frame amount, and to measure a time used according to communication enterprises in a dual band. CONSTITUTION: A method for measuring a time used in a mobile wireless terminal comprises the steps of: checking whether a communication path is connected; if so, measuring a received frame amount; checking whether the communication path is blocked; if so, measuring a used time by multiplying the measured frame amount by a time taken when a frame receives or transmits. The time received or transmitted by a frame is 4.615 milliseconds.
Patent KR-20000044637-A (KR)
Title: Plasma display panel having cathodoluminescence phosphor
Inventor: CHOI GYUNG CHEOL
IPC: H01J1/30
Filed: 1998-12-30
Abstract: PURPOSE: A plasma display panel having cathodoluminescence phosphor is provided to enhance light emission efficiency and easily form a large panel. CONSTITUTION: A plasma display panel having cathodoluminescence phosphor comprises first and second substrates(31,32) opposing each other, discharge electrodes(33A,33B) formed on the substrate(31), an induction electrode(34), a dielectric layer(35) and a cathodoluminescence phosphor(36). The dielectric layer(35) is formed on the substrate(31) to cover the two discharge electrodes(33A,33B). The cathodoluminescence phosphor(36) is formed on the substrate(32) to cover the induction electrode(34) and opposes to the first substrate(31).
Patent KR-20000044785-A (KR)
Title: Video data down filtering interpolation device of digital television
Inventor: KIM SU BON
IPC: H04N7/12
Filed: 1998-12-30
Abstract: PURPOSE: A video data down filtering interpolation device of a digital television is provided to interpolate digital data by performing down filtering for digital video data. CONSTITUTION: A video data down filtering interpolation device of a digital television comprises an interpolation filter(40), two memory blocks(10), a distribution portion(50), and a control portion(100). The interpolation filter generates interpolated data by performing down filtering for input video data of each clock period. Two memory blocks stores input video data. The distribution portion distributes the input interpolated data input of each clock period to each memory block. The control portion reads stored video data, provides the read video data to the interpolation filter, and stores the interpolated data to each memory block.
Patent KR-20000045087-A (KR)
Title: Method for automatically converting emulation
Inventor: LEE DON SUN
IPC: B41J29/393
Filed: 1998-12-30
Abstract: PURPOSE: A method for automatically converting emulation is provided to automatically convert an emulation to another provided by a printer driver, thereby improving convenience of user. CONSTITUTION: A method for automatically converting emulation includes the steps of determining whether a transmitted data is received or not after converting a mode of a printer to a preset emulation mode in a printer driver(S100), converting the data to a printing data if the data is received(S200), determining whether the printing data is normally converted or not(S300), requesting conversion of the emulation mode to the printer driver for converting the data to be normally output if the printing data was converted abnormally(S400), and outputting the data after converting to the printing data by using the emulation mode converted in the printer mode(S500,S600), wherein the emulation mode is converted to one of PCL HPGL, PDL, KS/KSSM and GDI according to a sequence preset in the printer driver.
Patent KR-20000045227-A (KR)
Title: Method for forming gate oxide layer of semiconductor device
Inventor: SEONG NAK GYUN
IPC: H01L21/31
Filed: 1998-12-30
Abstract: PURPOSE: A method for forming a gate oxide layer of a semiconductor device is provided to form a gate insulating layer for preventing degradation of a gate oxide layer. CONSTITUTION: A method for forming a gate oxide layer of a semiconductor device comprises the following steps. A pad oxide layer and a nitride layer are formed on a surface of a semiconductor substrate(21). A trench is formed by etching the nitride layer, the oxide layer and the semiconductor substrate. An oxide layer is formed on a bottom face and a side face of the trench and it is annealed by using a gas containing nitrogen. A trench cap layer(27) is formed on a front face including the trench. The trench cap layer is flattened and the nitride layer is removed. A photoresist layer is applied and formed thereon and the photoresist remains only an active area by patterning selectively it. An edge portion of an upper portion of the trench is etched. The photoresist layer is removed and a gate oxide layer and a gate poly layer are formed on the front face.
Patent KR-20000045342-A (KR)
Title: Method for fabricating transistor
Inventor: GEUM DONG RYUL
IPC: H01L29/78
Filed: 1998-12-30
Abstract: PURPOSE: A method for fabricating a transistor is provided to reduce a short channel effect and a hot carrier effect by increasing a depletion layer at a junction region. CONSTITUTION: A method for fabricating a transistor comprises forming a gate oxide layer(12) and a polysilicon layer(13) sequentially on a semiconductor substrate(11) and patterning the layers(12,13) to form a gate electrode. Impurity junction regions of a low concentration are formed at the semiconductor substrate by a low-concentration ion implantation method by using the gate electrode as a mask. Spacers consisting of an insulation material are formed at both sidewalls of the gate electrode. High-concentration impurity junction regions(16) are formed at the substrate by a high-concentration ion implantation by using the gate electrode and the spacers as a mask. A silicide film(17) is formed on a resultant structure by a silicide process. After removing the spacer, an impurity of an opposed type to the substrate is implanted by using the silicide film(17) as a mask.
Patent KR-20000045578-A (KR)
Title: Dispersion optical-fiber having waveguide characteristic at broad wavelength band
Inventor: OH KYEONG HWAN
IPC: G02B6/00
Filed: 1998-12-30
Abstract: PURPOSE: A dispersion optical fiber is provided to keep a normalized frequency of a waveguide constant irrespective of a wavelength. CONSTITUTION: A dispersion optical fiber consists of a core and a cladding. The core and cladding are mainly made of silica. Fluorine (F) is added to the silica core and boron oxide (B2O3) is added to the silica cladding, using a chemical vapor deposition. The dispersion optical-fiber can be applied to a broadband coupler, a WDM multiplexer, or demultiplexer since a difference in refractive index between the core and cladding is varied according to wavelengths and thus a normalized frequency is kept constant at a broad wavelength band.
Patent KR-20000046257-A (KR)
Title: Apparatus for translating test tray in heating chamber of handler
Inventor: HAM CHEOL HO
IPC: H01L21/68
Filed: 1998-12-31
Abstract: PURPOSE: An apparatus for translating a test tray in a heating chamber of a handler is provided to delay the test tray in the heating chamber of the handler by a buffer. CONSTITUTION: An apparatus for translating a test tray in a heating chamber of a handler includes a first and third axes(111,112), a first and third inner axes(121,122), a second and fourth axes(131,132), a second and fourth inner axes(141,142), and an actuator. The first and third axes(111,112) include a hole inside and a first nose(113) for supporting or dis-assembling both sides of the test tray. The first and third inner axes(121,122) includes a second nose(143) for supporting or dis-assembling both sides of the test tray. The second and fourth axes(131,132) include the first nose for supporting or dis assembling both sides of the test tray and translate the test tray. The second and fourth inner axes(141,142) include a second nose for supporting or dis-assembling both sides of the test tray and are inserted in the inner sides of the second and the fourth axes. The actuator drives the first and third axes, the first and third inner axes, the second and fourth axes, and the second and fourth inner axes, respectively.
Patent KR-19990028914-A (KR)
IPC: C11D11/00
Filed: 1996-07-03
Abstract: PCT No. PCT/EP96/02902 Sec. 371 Date Jan. 12, 1998 Sec. 102(e) Date Jan. 12, 1998 PCT Filed Jul. 3, 1996 PCT Pub. No. WO97/03168 PCT Pub. Date Jan. 30, 1997A process for producing an anionic surfactant-containing alkali metal silicate-alkali metal carbonate compound providing multiple wash cycle performance, wherein the compound contains 15% to 50% by weight of alkali metal silicate which is x-ray amorphous and has a molar M2O to SiO2 ratio of 1:1.5 to 1:3.3 and M represents an alkali metal, 30% to 70% by weight of alkali metal carbonate, 1.5% to 15% by weight of anionic surfactant and 12% to 19% by weight of water, by providing a powder component selected from alkali metal carbonate, alkali metal silicate, or a mixture of alkali metal carbonate and alkali metal silicate, and agglomerating the powder component with an aqueous composition containing one or more anionic surfactants.
Patent KR-19990035897-A (KR)
Title: 반사판, 반사형 편광판 및 반사형 액정표시장치
IPC: G02B5/08
Filed: 1996-07-26
Abstract: 그 중앙선을 따라 200-1500nm의 평균 거칠기(Ra)를 가진 반사면을 구비한 반사판은 광원으로부터 소정각도에서 입사하는 광의 반사 분포가 반사각에 의존하고, 정반사각도로부터 5°이상 차이나는 하나 또는 둘의 반사각에서 최대 반사가 발생한다. 반투과 반사판은 광원으로부터 소정 각도에서 입사하는 광의 분포가 반사각에 의존하고, 정반사각도로부터 5°이상 차이나는 하나 또는 둘의 반사각에서 최대 반사가 발생한다. 이런 반사판이 반사형 액정 표시장치에 설치될 때 외부적인 광의 효과 없이 밝고 선명한 상이 얻어진다.
Patent KR-19990044344-A (KR)
Title: 정보 전송 장치 및 전송 방법
IPC: H04N7/24
Filed: 1997-07-02
Abstract: 본 발명은, 다른 송출 전송 장치에 의해 다중화된 패킷 라인(S35)을 엘리먼트 데이터의 패킷 라인(S52)과, 엘리먼트 데이터의 제 2 부가 정보의 패킷 라인(S53)으로 분리하기 위한 단일 분리 수단과, 더 제공된 제 2 부가 정보 및 제 1 부가 정보(S37)를 결합 및 재 생성함으로써 집적된 제 3 정보를 생성하는 부가 정보 생성 수단(67)이 제공되고, 부호화 수단(43~46)에 부가된 패킷 식별자를 제어하고, 다수의 부호화 수단이 각각 다른 패킷 식별자를 부가하도록 지시하는 제어 수단(42)이 더 제공된다. 따라서, 부가 정보 및 패킷 식별자의 중복을 간단한 구성으로 용이하게 방지할 수 있다.
Patent KR-19990063585-A (KR)
Title: 결정상 ｚａｐ계 단백질
IPC: C12N9/12
Filed: 1996-08-30
Abstract: 본 발명은 단백질의 3차원 구조를 결정하는데 특히 유용한 사람의 ZAP-70, 및 특히, 텐덤(tandem) Src 상동-2("SH2") 도메인을 함유하는 ZAP-70 영역, 및 리간드가 형성되거나 형성되지 않은 이들의 결정형에 관한 것이다.  ZAP의 텐덤 SH2 영역의 3차원 구조는 ZAP 및 SH2 도메인-함유 단백질의 ZAP계의 그 밖의 단백질의 생물학적인 작용, 특히 SH2 도메인중의 하나 또는 둘 모두를 포함하는 분자간 상호작용에 의해 중재되는 이들의 생물학적인 작용을 억제하는 약제학적 조성물을 설계하는데 유용한 정보를 제공한다.
Patent KR-19990063908-A (KR)
Title: 단축 코드 다이얼링 장치 및 전기통신 링크 설치 방법
IPC: H04M3/38
Filed: 1997-03-26
Abstract: 본 발명은 단축 코드 다이얼링 장치 및 전기통신 링크 설치 방법에 관한 것으로서, 이동 전화망은 각각의 사용자가 전용 네트워크(PDN1)로의 액세스를 제공하는 데이터 변환 장치(PAD/PH1)로의 액세스를 제공하기 위해 사용이 허용되는 단축 코드를 정의하기 위해 각각의 사용자 아이덴티티와 관련된 단축 다이얼링 코드의 리스트를 저장하고, 단축 코드가 이동국(MS1)상에서 다이얼된 경우 이동국(MS1)으로부터 얻어진 호출자 식별 데이터와 함께 단축 코드를 구비하는 통화 데이터는 무선 링크(1)를 걸쳐 이동 스위칭 센터(MSC1)로 전송되며, 통화를 루팅하기에 앞서 다이얼한 기지국(MS1)의 아이덴티티가 인증되고, 그러면 통화 데이터내 단축 코드는 사용자가 통화를 거는 것이 허용되는지 여부를 결정하기 위해 허용된 단축 코드 리스트와 비교되며, 만일 사용자가 통화를 거는 것이 허용된다면 통화는 데이터 변환 장치(PAD/PH1)에 대응하는 착신지로 루트된다. 
     또한, 오퍼레이터가 코드와 데이터 변환 장치간의 고정된 관계를 가입자에게 제공할 수 있도록 네트워크 오퍼레이터가 데이터 변환 장치(PAD/PH1)를 구성하는 것이 가능하고, 그러면 장치는 온워드 통신을 좀더 쉽고 좀더 전문적으로 하기 위해 예를 들어 개인전용인 웰컴 페이지, 단순화된 사용자 고유 데이터로의 액세스 등을 통해 가입자 고유 정보로 구성될 수 있는 것을 특징으로 한다.
Patent KR-19990081909-A (KR)
Title: 핵발전소용 증기송풍 어셈블리
IPC: G21C9/004
Filed: 1997-01-15
Abstract: 본 발명은 만일 필요하다면 원자로의 격납용기에 해를 끼치는 증기 과잉압의 축적을 중화시키기 위하여 증기를 응축시키는 목적을 가지는 워터풀속에 증기를 송풍시키기 위해 워터풀 속에 잠겨진 하단부를 가지는 종류의 핵발전소용 증기송풍 어셈블리에 관한 것이다. 다수의 관통개구들이 개별적인 송풍튜브(10)의 벽(11)에 요입되고, 개구들 각각은, 적어도 하나가 튜브벽(14)에 대해 만곡된 만곡부(15)의 일부를 구성하는 상부와 하부 모서리(13, 14)에 의해 그 경계가 정해진다. 하부 구멍모서리(14)는, 증기가 튜브를 통해 쇄도하면 주 증기흐름이 튜브의 바닥개구(12)에 도달하기 전에 주 증기흐름을 부분 흐름으로 나누어 이 부분 흐름을 풀의 물속으로 흘려보내는 증기흐름 절단모서리를 형성한다.