baber/WOPTO huggingface dataset:
Patent KR-20000003064-A (KR)
Title: Capacity creating method of semiconductor device using high temperature oxide
Inventor: NAM SANG DON
IPC: H01L27/04
Filed: 1998-06-25
Abstract: PURPOSE: A capacity creating method of a semiconductor device using high-oxide is provided to accomplish high capacitance. CONSTITUTION: The capacity creating method of a semiconductor device using high-oxide comprises the processes of: forming a capacity lower electrode pattern(104) made into the first conductive film on a semiconductor substrate(100); layering a second conductive film(106) on the whole face of the semiconductor substrate; forming only the second conductive oxide on the surface of an interlayer insulating film(102); layering a dielectric film(110) on the semiconductor substrate that progresses high-oxide; and forming an upper electrode(114) on the semiconductor substrate that layers the dielectric film by layering the third conductive film.
Patent KR-20000003973-A (KR)
Title: Method for forming a gate electrode of semiconductor devices
Inventor: LEE JIN HONG
IPC: H01L21/28
Filed: 1998-06-30
Abstract: PURPOSE: A gate electrode formation method is provided to prevent an excess oxidation when re-oxidation process by capping both sidewalls of the gate pattern to an oxidation preventing layer using a sacrificial oxide. CONSTITUTION: The method comprises the steps of sequentially depositing a gate oxide(11), a gate polysilicon layer(12), a TiN layer(13), a tungsten layer(14) and an oxidation preventing layer(15) made of oxide nitride on a silicon substrate(10); patterning a gate electrode by selective etching the oxidation preventing layer, the TiN/W layers and the gate polysilicon layer; forming a sacrificial layer(16) on the resultant structure; forming a sacrificial spacer(17) at sidewalls of the gate polysilicon pattern and the TiN/W layers; removing the sacrificial spacer(17); and re-oxidation the resultant structure, thereby forming a gate electrode of polyside structure.
Patent KR-20000004430-A (KR)
Title: Charcoal mattress for bed
Inventor: LEE NAK CHEUN
IPC: A47C27/00
Filed: 1998-06-30
Abstract: PURPOSE: A charcoal mattress is provided to operate a remote infrared ray and a negative ion to a user directly and indirectly while maintaining a cushion and a comfortableness. CONSTITUTION: A charcoal mattress is formed by:a spring supporter(10); plural cushion springs(20) installed on the upper unit of the spring supporter with a certain space; a cushion unit(30) installed on the upper unit of the cushion spring; a mattress cloth(40) covering the spring supporter, the cushion springs, and the cushion unit; and an unwoven fabric bag(50) filled with charcoal and cork.
Patent KR-20000008628-A (KR)
Title: Booting music outputting method of computer system
Inventor: LEE HYEON DONG
IPC: G06F1/00
Filed: 1998-07-15
Abstract: PURPOSE: A booting music outputting method of computer system is provided to preventing tediousness of user during the computer system is booted. CONSTITUTION: The method comprises the steps of: first step to output a voice message or a melody by initializing a sound driver preferentially when start of power on is sensed and a POST(power on self test) is operated, and second step to finish output of the voice message or the melody when the POST is completed and an operating system is loaded. The output of the voice message or the melody is finished when interrupt key is inputted by user.
Patent KR-19990013884-A (KR)
Title: 플라즈마 디스플레이의 구동 방법 및 구동 장치
IPC: G09G3/292
Filed: 1998-07-15
Abstract: 본 발명은 플라즈마 디스플레이의 구동시의 구동 전압 마진의 개선이 가능한 플라즈마 디스플레이의 구동 방법 및 구동 장치를 제공하는 것을 목적으로 한다. 
     리셋 기간에서의 소거 방전을 제 1 및 제 2 전극간에서 실시되는 방전 형성중에 펄스 전압의 인가를 종료시키는 세폭 펄스에서 행하는 서브필드를 적어도 포함하여, 펄스 전압의 인가를 종료시키는 세폭 펄스의 하강과 동시에 제 3 전극에 인가하고 있는 전압 펄스를 하강시킨다.
Patent KR-20000013386-A (KR)
Title: Device for automatically putting culture bed and inoculating
Inventor: JI JUNG HYUN
IPC: A01G1/04
Filed: 1998-08-07
Abstract: PURPOSE: A device is provided to achieve a uniform work of supplying a case, mixing and putting a culture bed and seeds in the case and inoculating a surface with an automation system. CONSTITUTION: The device is comprised of:a transmission conveyer(11) for continuously supplying a lot of cases; a two-step device for dividing the cases by the piece so as to supply; a basket conveyer for supplying the raising bed, which mixes the seeds that are crushed and at the same time supplied with the sterilized raising bed and then supplies them together; a device of putting in a case for putting the raising bed in the case and hardening as well as forming an activation pore; a seed inoculation device for finishing by inoculating the surface.
Patent KR-20000015237-A (KR)
Title: Method for manufacturing a semiconductor device
Inventor: SHIN JUNG-SIK
IPC: H01L21/28
Filed: 1998-08-27
Abstract: PURPOSE: A method for manufacturing a semiconductor device is provided, which forms a MOS FET which a shape of an active region is changed for deeply forming a connection depth. CONSTITUTION: The method for manufacturing a semiconductor device comprises the steps of: forming an insulating film on a substrate (10); forming a contact hole on the insulating film; forming a conductive layer (18) for inserting the contact hole on the insulating film; and performing a planeness of a front surface of the conductive layer (18) when the insulating film is exposed to form a conductive plug, wherein the forming of the conductive plug through the forming of the conductive layer (18) and the planeness of the conductive layer (18) is performed using an in-insu. Thereby, it is possible to prevent which a bridge is formed and form a uniform conductive plug.
Patent KR-20000018907-A (KR)
Title: Method for forming connection hole using poly-layer insulating film
Inventor: LEE SEON HUN
IPC: H01L21/28
Filed: 1998-09-07
Abstract: PURPOSE: A method for forming connection hole using poly-layer insulating film is provided to prevent an etching stop phenomenon by composing a poly-layer oxidation film having a different etching ratio. CONSTITUTION: A wafer having a first insulating film on which a metal wire is formed is provided (110). A first oxidation film having a high etching rate is formed on the first insulating film(120). A second oxidation film which has a low etching rate than the first oxidation film is formed(130). A fourth oxidation film which has a lowest etching rate is formed and a second insulating film having a poly-layer structure is formed(140). The second insulating film is etched and a connection hole is formed on the a metal wire(150).
Patent KR-20000019147-A (KR)
Title: System and the method for rom bios driving of computer
Inventor: KIM BYONG HWAN
IPC: G06F9/22
Filed: 1998-09-09
Abstract: PURPOSE: A system and the method for ROM BIOS driving of computer are provided to proceed a program routine related to an input/output booting of computer. CONSTITUTION: The system and the method for ROM BIOS driving of computer are composed of a central processing unit(10), a main memory unit(20), a serial ROM(30), a hard disk driver(HDD)(40), the first control unit(50) and the second control unit(60). Furthermore, the system and the method for ROM BIOS driving of computer comprises: a memory unit that divides the ROM BIOS into a least part, an interrupt responding part and a special function proceeding part, and stores the least part; an auxiliary memory unit wherein the BIOS including the interrupt responding part and the special function proceeding part is stored; a main memory unit that proceeds the BIOS routine corresponding to various input/output work demand; and a control unit that controls mutual data transmitting/receiving between the memory unit, the auxiliary memory unit and the main memory unit.
Patent KR-20000021746-A (KR)
Title: Production method of metal mold for trimming and piercing for isolation dash panel
Inventor: CHOI WON JEONG
IPC: B62D1/00
Filed: 1998-09-30
Abstract: PURPOSE: A production method of a metal mold is offered to reduce a production cost and a number of workers differentiating an existing master model work, also to maintain a precision for the production. CONSTITUTION: A production method of a metal mold contains the steps of: obtaining a product degree of an isolation dash panel, working on a surface after cowling and dashing by a modeling software(1) using a computer, outputting a program so a CNC(Computer Numerical Control) as to be operated in a CAM(Computer Aided Manufacturing, 2) with the data modeled by the face-working, and CNC milling by the transmission(3) of CNC data to complete a mold. In the method, because a numerical value is accurately outputted by cowling and dashing is performed by the modeling software(2), the CNC processing is enabled by a pattern production process through a designing process of the mold.
Patent KR-20000021986-A (KR)
Title: Circuit for controlling temperature of refrigerator
Inventor: JUNG IL SIK
IPC: F25D11/00
Filed: 1998-09-30
Abstract: PURPOSE: A circuit for controlling temperature of a refrigerator is provided to display the temperature of inside through the refrigerator and to control the temperature of a refrigerating chamber according to the usage at the same time. CONSTITUTION: A controlling circuit of a refrigerator contains: a converter(10) to rectify the DC fed to a power unit of the refrigerator through a circuit for rectifying both waves; a first circuit unit(20) to make a pulsating current clamped through the rectification by equipping a zenor diode and a transistor; a thermosensitive PUT(programmable unjunction transistor) to detect the temperature alternated every semi-cycle with the pulsating current by programming to switch between a certain range of temperature according to the rising and the falling of a resistant value; and a display unit for displaying the temperature of indoor sensed by the photosensitive PUT.
Patent KR-19990007537-A (KR)
Title: 점화플러그용 전극팁 및 상기 전극팁을 점화플러그의 전극에 접합하는 방법
IPC: H01T13/20
Filed: 1998-10-01
Abstract: 본 발명은 점화플러그용 전극팁 및 상기 전극팁을 점화플러그의 전극에 접합하는 방법에 관한 것으로서, 소염작용을 줄임으로써 혼합기의 착화성을 향상시킬 수 있는 접합성이 우수한 점화플러그용 전극팁의 제공과, 전극팁을 중심전극 및 접지전극에 견고하게 접합시킴으로써 중심전극 및 접지전극의 내구성 향상을 도모할 수 있는 전극팁을 점화플러그의 전극에 접합하는 방법의 제공을 목적으로 한다. 
     본 발명은, 점화플러그의 전극에 접합되는 점화플러그용 전극팁으로서, 본체(30)와; 상기 본체의 상반부 둘레로 형성되는 용접살(31)과; 상기 본체의 상면 중앙부에 형성되는 스폿용접돌기(33)와; V자 단면을 가진 십자형, 원형 및 V자 단면을 가진 격자형을 포함하는 군에서 선택된 어느 한 형태로 상기 본체의 저면에 형성되는 소염방지홈(35)을 포함하여 이루어진다. 또한, 본 발명에 따른 전극팁을 점화플러그의 전극에 접합하는 방법은, 스폿용접기(7)의 스폿용접전극(71) 상면에 전극팁(3)을 고정배치함과 아울러 저면이 스폿용접돌기(33)와 접하도록 점화플러그의 전극(4)을 배치하여 스폿용접함으로써 스폿용접돌기와 전극의 저면을 서로 접합하는 1차 스폿용접단계와; 상기 용접된 전극을 레이저용접기(9)에 배치하여 상기 용접살(31)에 레이저 빔(LB)을 방사하여 용접살을 용융시킴으로써 전극과 전극팁의 접합부인 중앙용접부 및 테두리부를 증대시키는 레이저 용접단계를 포함한다.
Patent KR-20000025563-A (KR)
Title: Method for manufacturing thin film transistor
Inventor: CHANG JONG WOONG
IPC: H01L29/786
Filed: 1998-10-13
Abstract: PURPOSE: A TFT(thin film transistor) fabrication method is provided to minimize contact resistance by etching an amorphous silicon layer using a protecting layer as a mask. CONSTITUTION: A gate electrode(21), a gate insulating layer(30), an amorphous silicon layer (40), and two heavily doped amorphous silicon parts(51,52) are sequentially formed on a substrate(10). A source electrode(61) and a drain electrode(62) are formed on the heavily doped amorphous silicon parts(51,52). A first protecting layer(70) is stacked on entire surface of the resultant structure. The heavily doped amorphous silicon parts(51,52) between the source electrode(61) and the drain electrode(62) are exposed by etching the first protecting layer(70). The amorphous silicon layer(40) is exposed by etching the heavily doped amorphous silicon parts(51,52).
Patent KR-20000025921-A (KR)
Title: Method for flattening semiconductor devices
Inventor: KWON IL WOO
IPC: H01L21/302
Filed: 1998-10-15
Abstract: PURPOSE: A buried flattening method of semiconductor devices is provided to improve a flatness by using a thermal oxidation of deposited polysilicon layer. CONSTITUTION: A plurality of fine wire patterns(12) are formed on a semiconductor substrate(11). The wire patterns(12) are spaced apart from each other. An insulating layer(13) is deposited on the wire patterns(12). A polysilicon layer(14) is deposited on the insulating layer(13) to have constant distance. Then, by performing thermal oxidation process the polysilicon layer(14), an interlayer flattening layer(14a) is formed to fully buried between the wire patterns(12). The insulating layer(13) is made of silicon nitride, and the interlayr flattening layer(14a) is composed of silicon oxide.
Patent KR-20000026382-A (KR)
Title: Device for cleaning semiconductor
Inventor: NA GUK HWAN
IPC: H01L21/304
Filed: 1998-10-20
Abstract: PURPOSE: A semiconductor cleaning device is provided to minimize the occurrence of leakage and crack of the sink by installing an additional supporting bar so that the sink and the supporter for bath fixing does not contact each other. CONSTITUTION: A device comprises a sink(10), an additional supporter(12a), a supporter for bath fixing(14), four sides of the sink(20a, 20b, 20c, 20d), a sink bottom(30), and a DI water bath(40). Two additional supporters are installed vertically and horizontally at the PVC sink and four bath fixing supporters are installed so that the sink does not receive the force directly. Therefore, the crack or leakage of the sink at best is minimized. The bottom of the sink is in angle shape so that DI water drains quickly. The bath guide is further installed to prevent the DI water from directly flowing to the sink and if there is large amount of DI water, the DI water drains to the sink through the bath guide.
Patent KR-19990037315-A (KR)
Title: 아미드 화합물의 제조방법
IPC: C12P13/02
Filed: 1998-10-23
Abstract: 니트릴 히드라타아제를 작용시킴으로써 니트릴 화합물로부터 상응하는 아미드 화합물이 제조되는, 니트릴 화합물을 함유하는 조성물 중의 시안화수소산의 농도를 화학공정으로 감소시키고, 그 후 니트릴 히드라타아제를 니트릴 화합물에 작용시킴을 특징으로 하는 아미드 화합물의 제조방법이 기재되어 있다.  본 발명에 따라, 니트릴 히드라타아제의 활성 감소가 효과적으로 억제되어 니트릴 화합물로부터 아미드 화합물이 효과적으로 제조될 수 있다.
Patent KR-20000031142-A (KR)
Title: Method for operating ads type pdp
Inventor: KIM JAE SEONG
IPC: G09G3/291
Filed: 1998-11-03
Abstract: PURPOSE: A method for operating an ADS(Address Display period Separation) type PDP(Plasma Display Panel) is provided to remove a discharge omission phenomena by providing a space charge into a discharge cell. CONSTITUTION: A method for operating an ASD(Address Display period Separation) type PDP comprises the steps of: applying an address pulse to an X electrode, applying a sustain pulse to a Z electrode, and removing a wall charge formed on a Y electrode and the Z electrode; applying a scan pulse to the Y electrode, applying a pulse to the z electrode, performing a pre-discharge during a predetermined time, applying the address pulse to the X electrode, generating a light discharge between the X electrode and the Y electrode, and forming the wall charge within a discharge cell; and the sustain pulse to the X and the Y electrodes and sustaining the wall charge.
Patent KR-20000031286-A (KR)
Title: Fluoresent lamp dimming control algorithm through twisted-pair of communication lines
Inventor: IMIT CO LTD
IPC: H05B37/02
Filed: 1998-11-05
Abstract: PURPOSE: A fluorescent lamp dimming control algorithm is to design and constitute a hardware and a software adapted to realize a system for dimming a respective fluorescent lamp and an algorithm capable of efficiently managing the same system for an optimum operation of a lighting apparatus, and to construct a firmware capable of operating them to conform to the desire of a user. CONSTITUTION: A dimming control system includes an automatic mode and a passive mode. The automatic/passive mode is selected by a PC or a remote controller. In the automatic mode, a voltage inputted through a light sensor depending on the brightness thereabout and a standard voltage determined by a user through a brightness determination volume are compared to minimize the difference between the two voltages. The passive mode enables remote control by a PC connected through a twisted pair of communication lines and using a CSMA/CD protocol. Also, a remote controller can control brightness using a switch.
Patent KR-19990014573-A (KR)
Title: 2차원 낚시
Filed: 1998-11-20
Abstract: 본 발명은 좌낚시 바늘과 우낚시 바늘을 하나의 몸체로 형성하여 이를 낚시줄에 체결하수 있게한 2차원 낚시에 관한 것이다. 
     종래의 낚시는 단일차원의 낚시 바늘도 되어 있어 이를 물속에 투하하였을때는 미끼가 끼움된 낚시바늘이 유동되지 않고 정지된 상태이므로 고기를 효과적으로 유인할수 없는 결점이 있고 또한 고기가 미끼에 입질을 할 때는 이의 유동거리가 매우 짧아 낚시찌의 상하운동이 미비하여 육안으로 찌의 운동상태를 포착하기가 매우 힘드는 결점이 있었을뿐만 아니라 돌돔이나 복어와 같이 입이 크거나 이발이 예리한 고기의 경우는 물림상태가 불안전하여 낚시줄을 쉬히 손상케하거나 걸림턱에서 쉬히 탈리하여 도망쳐버리는 폐단이 있었던 것이다. 
     본 발명은 이상의 문제점을 해결하고자 발명한 것으로 이의 발명요지는 낚시바늘몸체(1)의 좌우측에 경사걸림턱(3')(4')(103')(104')이 있는 낚시바늘(3)(4)을 반원형상 또는 S형상으로 형성하고 그 중간부에는 낚시줄 체결공(2')이 있는 지지간(2) 또는 낚시줄 체결부(102)를 형성하므로서 이를 물속에 투하시켜 낚시질할때는 좌우 낚시바늘(3)(4)(103)(104)에 꽂힘된 미끼는 물의 흐름에 의해 회전운동하면서 고기를 용이하게 유인할수 있게 하고 고기가 미끼를 입질할때는 지지간을 지지점으로 하여 좌우 낚시바늘은 지렛대운동하면서 낚시줄에 체결된 낚시찌의 운동거리를 크게 하기 때문에 낚시자는 낚시찌를 쉽게 포착할수 있고 또한 고기가 낚시바늘을 물었을때는 물리지 않고 있는 상대측 낚시바늘이 회전되면서 이의 걸림턱이 낚시바늘에 물림된 고기의 두부를 협지해 주기 때문에 물림된 고기가 낚시바늘에서 이탈되거나 낚시줄을 손상케하는 폐단을 방지할수 있게한 것이다.
Patent KR-20000039988-A (KR)
Title: Fixing agent for ground anchor
Inventor: KIM GUK IL
IPC: E02D5/76
Filed: 1998-12-16
Abstract: PURPOSE: A fixing agent for a ground anchor is provided to be light, to reduce the cost and to remove a tensile material without a drawer by reducing the number of components with exclusion of a solar wedge, a central material and a drawing tensile material and by using an internal body for an U-shape anchor as an internal fixing agent. CONSTITUTION: A sleeve(4) installs a wedge(5) in a lower material(2) and supports the wedge. A tapered wedge chair(41) is formed in the center. The sleeve moves backward to buffer the control of the wedge and help a tensile material be separated from the wedge. The sleeve is precisely processed between a cylinder and a disc of a sheet without crack. Therefore, a thermoplastic resin(34) is prevented from leaking into the gap and then an internal body of a U-shape anchor is prevented from deteriorating.
Patent KR-19990063434-A (KR)
Title: 흑연 함유 부정형 내화물 재료
IPC: C04B35/103
Filed: 1998-12-24
Abstract: 본 발명은 소정의 입경으로 세부분으로 나누어진 알루미나 및 알루미나-마그네시아 스피넬(spinel)로부터 선택된 1종 이상과, 소정의 평균 입경의 인조흑연, 및 피치 분말을 함유하고, 이들이 소정의 함유율로 배합된 흑연 함유 부정형 내화물 재료(graphite-containing monolithic refractory material)를 제공한다.  이러한 내화물 재료는 선택적으로, 소정의 평균 입경의 탄화규소를 소정의 함유율로 함유할 수 있다.  이들중 어느 것도 고가인 특수 탄소 원료를 사용하지 않고, 낮은 수분량으로도 유동 시공성(casting workability)이 우수하고, 내식성 및 내파열성(spalling resistance)을 모두 갖는 흑연 함유 부정형 내화물 재료이고, 혼선차 (混銑車) 라이닝용의 유체 부정형 내화물 재료로서 바람직하다.
Patent KR-20000043038-A (KR)
Title: Method for fabricating semiconductor device
Inventor: LEE MYEONG SIN
IPC: H01L27/108
Filed: 1998-12-28
Abstract: PURPOSE: A method for fabricating a semiconductor device is provided to prevent cracks in an oxide layer by lessening stress of the layer. CONSTITUTION: A method for fabricating a semiconductor device comprises forming a nitride layer(4) only on a cell region(A) after forming bit lines, forming a first insulating layer(5), etching the first insulating layer(5) to expose the nitride layer(4) on the cell region, wherein a portion of the nitride layer(4) remains between the bit lines, forming a second insulating layer(6), polishing the second insulating layer(6) to make it plane, forming contact holes, forming a polysilicon layer(8), coating photoresist(9), exposing the second insulating layer(6) by removing the photoresist(9) and the polysilicon layer(8), and etching the second insulating layer(6) to a certain thickness.
Patent KR-20000043388-A (KR)
Title: Method for detecting water level in fully automatic washing machine
Inventor: KIM KYUNG HAK
IPC: D06F33/02
Filed: 1998-12-29
Abstract: PURPOSE: A method for detecting the water level in a fully automatic washing machine is provided, to optimize the water-supply amount according to the amount of laundry articles. CONSTITUTION: A method comprises the steps of determining whether the start button of a washing machine is inputted or not (step 1); measuring the height of laundry articles by using the photosensor comprising a light emitting part and a light receiving part which are set at both sides of a reservoir along the direction of height if the start button is inputted (step 2); calculating the amount of laundry articles by using the height of laundry articles determined at the step 2 and determining the water-supply amount corresponding to the calculated amount of laundry articles (step 3); and supplying water to the level corresponding to the water-supply amount determined at the step 3 and performing washing, rinsing and dehydrating (step 4).
Patent KR-20000044464-A (KR)
Title: Device for preventing loss of cellular phone
Inventor: LEE YONG JIN
IPC: H04B1/38
Filed: 1998-12-30
Abstract: PURPOSE: A device for preventing a loss of a cellular phone is provided to previously prevent a loss of a cellular phone by outputting an alarm tone when a user and the cellular phone are away over a predetermined distance. CONSTITUTION: A device for preventing a loss of a cellular phone comprises a receiving circuit(220), an amplifier(230), a receiving field intensity detection circuit(240), a level comparator(250), and an alarm tone generator(260). The receiving circuit(220) receives a high frequency signal wireless-transmitted in the cellular phone. The amplifier(230) amplifies a signal output from the receiving circuit. The receiving field intensity detection circuit(240) detects and outputs a field intensity of an amplified signal. The level comparator(250) generates an alarm tone output signal by comparing the receiving field intensity level with a standard voltage level. And the alarm tone generator(260) generates and outputs an alarm tone in an input of the alarm tone output signal.
Patent KR-20000046560-A (KR)
Title: Method for statistics data measurement of different number process status
Inventor: JE KYEONG IL
IPC: G06F15/00
Filed: 1998-12-31
Abstract: PURPOSE: A method for statistics data measurement of different number process status is disclosed to enable the number process library to directly call number process status statistics library. CONSTITUTION: A method for statistics data measurement of different number process status is composed of a number processor(100), a library for number procession(110), a statistics library(120), and a storage(130). The number processor(100) is connected to an Access Subscriber Interface(ASI) and a library for number procession possesses a number process library for each number process status. A statistics library possesses statistics library of each number process status and the storage stores statistics data generated by each number process status statistics library.
Patent KR-19990036167-A (KR)
Title: 수압클러치해제시스템용 슬레이브 실린더
IPC: F16D25/08
Filed: 1997-05-30
Abstract: 본 발명은 차량의 수압클러치해제시스템에 적합하게 사용되는 외부슬레이브실린더(10)이다. 이 실리더는 내공(30a)이 형성된 원통형 동체(30), 내공내에서 활동가능하게 착설된 피스턴(32), 피스턴과 내공사이에 배치된 씨일(34), 피스턴의 후단부(32j)에 결합되고 내공으로부터 연장된 푸쉬롯드(42)와, 프리로드스프링(38)을 포함한다. 스프링(38)은 내공의 외부에 배치되는 원추형 코일스프링으로 구성되고, 이 스프링은 소경선단부(38a)가 푸쉬롯드의 후단부(46c)에 대하여 지지되고 그 대경선단부(38b)는 푸쉬롯드를 둘러싸는 동체의 후단부(30e)에 지지된다. 씨일(34)은 컵형의 구조로 되어 있으며 피스턴의 선단부에 형성된 돌출부(32c)상에 결합된다. 이 씨일은 내공에 밀폐결합되는 주연연장편(34e)과 주연연장편내의 영역을 폐쇄하고 피스턴의 선단부(32d)에 대하여 놓이는 기부(34a)를 포함한다. 씨일의 풀베이스형 컵구조는 씨일의 내주연과 피스턴사이의 내부누설경로가 형성되는 것을 방지한다.
Patent KR-19990063984-A (KR)
IPC: B24D11/00
Filed: 1995-10-05
Abstract: A method and apparatus for knurling a workpiece in which the knurl pattern has an oblique helix angle relative to the longitudinal axis of the cylindrical workpiece. Also disclosed is a method of molding a molded article with the knurled workpiece to impart the inverse of the knurl pattern onto the molded article, such a molded article, a method of forming a structured abrasive article with the molded article, and such an abrasive article. <IMAGE>