baber/WOPTO huggingface dataset:
Patent KR-20000012157-A (KR)
Title: Electrolytic grinding solution of aluminum or aluminum alloy and pre-treatment with it
Inventor: HAN SEONG HO
IPC: C25F3/20
Filed: 1998-10-16
Abstract: PURPOSE: The aim is to provide novel electrolytic grinding solution which is useful as pre-treatment agent of aluminum or aluminum alloy. CONSTITUTION: A water soluble electrolytic grinding solution of aluminum or aluminum alloy containing phosphoric acid 30-100 g/l, sodium hydroxide 30-120 g/l and sodium carbonate 50-250 g/l enables to shorten the reaction time of the surface treatment process and minimize the pollution. This solution is high value added product with high production and environment friendly in aspect of not using toxic material such as chromic acid.
Patent KR-20000026317-A (KR)
Title: Data output buffer
Inventor: LEE SANG PHIL
IPC: G11C7/00
Filed: 1998-10-20
Abstract: PURPOSE: A data output buffer is provided to adjust a transition velocity in a high velocity when data is changed from a high level to a low level by restraining an output potential of a high level data to an inner power voltage. CONSTITUTION: A data register means(10) selectively transmits a data signal changed according to an address change. A pull-up unit(40) pulls up a potential of an output terminal(doubt) as an external power voltage(Vext). A pull-down unit(50) pulls down the potential of the output terminal(doubt) as a ground potential(Vss). A first pull-up control unit and a first pull-down control unit(20,30) output control signals(pu,pd) for controlling an operation of the first pull-up control unit and the first pull-down control unit(20,30) according to a data signal value(/data 2) transmitted through the data register unit(10). A second pull-up unit(45) selectively performs a pull-up operation with the pull-up unit(40). A second pull-up control unit(25) controls an activation of an operation of the second pull-up unit(45).
Patent KR-20000028225-A (KR)
Title: Method for converting to power save mode on television set
Inventor: SONG BOK CHEON
IPC: H04N5/63
Filed: 1998-10-30
Abstract: PURPOSE: A method for converting to a power save mode in a television set is provided to automatically convert to a power saving mode when predetermined time elapses, after a viewer converts a television set into a stand-by mode for reducing power consumption, by reducing a stand-by state of the TV set. CONSTITUTION: A method for converting to a power save mode in a television set having a stand-by power circuit, for supplying stand-by power to a micro computer, comprises the steps of: counting whether certain time elapses after confirming that a TV set is converted into a stand-by mode, by TV power is turned off; intercepting stand-by power supplied from the stand-by power circuit after the certain time elapses, according to the counted result; and maintaining a power saving mode during the predetermined time until the television power is turned on again. A micro computer receives an optical signal delivered from a remote controller, converts the signal into a corresponding control signal, and supplies predetermined power to a receiver of the remote controller to applying the optical signal.
Patent KR-20000030997-A (KR)
Title: Scalpel for dentistry
Inventor: MUN CHEON HO
IPC: A61C3/16
Filed: 1998-11-02
Abstract: PURPOSE: A scalpel for dentistry is provided to easily operate and prepare a surgical operation for an oral cavity by cutting all parts with one blade as the blade is rotated freely. CONSTITUTION: A blade(70) is combined to a holder(50) for the surgery operation for an oral cavity. First, a holder cap(60) is combined with the holder. Then a round combiner(72) of the blade is inserted into a hole(62) and a rod(73) of the blade is placed on a cutting groove(63) of the holder cap. After that, a combining part(61) of the holder cap is combined with a male screw(51) of the holder. In the state of finishing the combination of a scalpel, the round combiner is placed in a settlement groove(52) formed in the head end of the holder. Therefore, a dentist performs a dental surgery using an edge(71) of the blade by grasping a handle(52) of the holder.
Patent KR-20000032529-A (KR)
Title: Burring device of mmiddle shell of rotary compressor of air conditioner
Inventor: SON HYUNG IL
IPC: F04C29/00
Filed: 1998-11-16
Abstract: PURPOSE: A burring device of middle shell of rotary compressor of air conditioner is provided to simultaneously perform the piercing and the burring of the shell from inside to outside precisely, maintaining the roundness of the shell. CONSTITUTION: A burring device of middle shell of rotary compressor of air conditioner includes a connecting member(201) of reciprocating instrument, a cam slider(211) detachably fixed to the connecting member and having a slanted slide cam surface(211') on a top thereof and an approximately circular section, a lifting guide block(212) fixed to a base plate(205) to be inserted with a shell(80) to slidingly contact outer periphery of the cam slide for guiding its lifting movement and formed approximately cylindrically with a guide hole(212a) for guiding punch sliders(215) in the radial direction, the punch sliders having a slanted cam surface(215') for converting the vertical movement of the cam slider to a radial movement to be guided into the guide hole of the lifting guide block by the cam function due to the sliding contact with the cam surface of the cam slider and fixed with a burring punch(216) thereon, and a burring die(223) fixed on a reciprocating movement block via a die block(222) for performing the burring and the piercing simultaneously.
Patent KR-19990062644-A (KR)
Title: 이동통신 시스템의 핸드오프 수행장치 및 방법
IPC: H04W36/08
Filed: 1998-11-30
Abstract: 이동통신시스템에서 핸드오프 모드시 기지국 장치가 프레임 데이터를 송신시, 적어도 연속하는 제1 및 제2프레임을 가지며, 상기 제1 및 제2프레임의 각각의 기간은 제1기간과 상기 제1기간에 뒤따르는 제2기간으로 분할하고, 제1프레임의 제1기간 및 제2프레임의 제2기간에서 각 프레임에 대응하는 데이터를 송신하고, 제1프레임의 제2기간 및 제2프레임의 제1기간에서 데이터를 송신하지 않는다. 그리고 단말기 장치가, 제1프레임의 제1기간 및 제2프레임의 제2기간에서 각 프레임에 대응되는 데이터를 수신하여 처리하고, 제1프레임의 제2기간 및 제2프레임의 제1기간에서 다른 기지국신호를 수신하여 핸드오프할 기지국을 탐색한다.
Patent KR-20000038482-A (KR)
Title: Windmill type billboard rotated in vertical direction and horizontal direction
Inventor: YUN CHANG HO
IPC: G09F11/00
Filed: 1998-12-07
Abstract: PURPOSE: A windmill type billboard rotated in vertical direction and horizontal direction is provided to maximize an advertising effect by rotating a billboard like a windmill and simultaneously rotating the billboard in a vertical direction and a horizontal direction. CONSTITUTION: A three-dimensional advertising board is installed on a sign tower(10). A circular disk(30) and a decelerating motor(20) are installed in a vertical direction driving unit(110) for providing electricity a rotating axis(15) for rotating the sign tower(10) and the advertising board. A boll bearing(75) is inserted into a upper portion of a chain gear(95), and a thrust bearing is inserted into a lower portion of the chain gear(95). The chain gear(95) is installed on a turntable(100). A vertical axis(130) supports the turntable(100). A horizontal direction driving unit(120) rotates the chain gear(95) using a decelerating gear(35) and a decelerator(45) for rotating the turntable(100). An upper post(60) supports the horizontal direction driving unit(120). An anchor bolt(105) is installed in the lower post(70) for being fixed to the ground. Upper and lower cases(80,90) cover the vertical direction driving unit(110) and the horizontal direction driving unit(120).
Patent KR-20000039263-A (KR)
Title: Band for flat braun tube
Inventor: SHIN WOON SEO
IPC: H01J29/87
Filed: 1998-12-11
Abstract: PURPOSE: A band for a flat Braun tube is provided to reduce the stress of a flat Braun tube. CONSTITUTION: A band(16) for a flat Braun tube comprises a first reinforcing means(18) which is attached to the outer corner portion of a band, and a second reinforcing means(20) which is attached to the inner side of the band(16). The band(16) is mounted to a panel(14) to reduce the tensile stress of the panel(14). The first reinforcing means(18) is attached to the corner portions of the band(16) to prevent the plastic deformation of the band(16). The first reinforcing means(18) is welded to the corner portions of the band(16). The second reinforcing means(20) is attached to the inner side of the band(16).
Patent KR-20000040667-A (KR)
Title: Method for fabricating contact hole and for flattening semiconductor memory cell
Inventor: BAE MYUNG GWANG
IPC: H01L27/10
Filed: 1998-12-19
Abstract: PURPOSE: A method for fabricating a contact hole and for flattening a semiconductor memory cell is provided to ensure the stability of a storage plate node by forming the storage node after forming an interlayer insulation film. CONSTITUTION: A first interlayer insulation film(100) is formed on a bit line. A bury contact(110) is formed on the first interlayer insulation film(100). A poly silicon(130) is filled in the bury contact(110). A second interlayer insulation film(120) is formed on the structure. A poly silicon(140) is coated after etching the second interlayer insulation film(120). Then, the poly silicon(140) is flattened. A lower electrode is formed by etching the poly silicon(140). A dielectric film is formed on the lower electrode. A poly silicon is deposited on the dielectric film. A plate node(140) is formed by etching the poly silicon(140). Then, a silicon oxide film is formed on the structure. A contact hole(162) is formed by etching the silicon oxide film and the first and the second interlayer insulation films(100,120). A metal contact(160) is formed by depositing metal.
Patent KR-19990081811-A (KR)
Title: 메모리 장치
IPC: G06F12/14
Filed: 1998-12-19
Abstract: 본 발명은 잘못해서 데이터가 변경되는 것을 방지하고, 보호 레벨을 이중으로 하는 메모리 장치에 관한 것이다. 
     본 발명은 메모리 블록 단위로 기입·소거가 이루어지는 메모리 장치에 있어서, 기입·소거를 금지하는 보호 지정 데이터를 상기 메모리 블록마다 기억하는 보호 지정 기억부에 부가해서 보호 해제를 금지하는 특정 블록 지정 데이터를 상기 메모리 블록마다 기억하는 특정 블록 지정 기억부를 갖는다.  그리고 보호 해제 신호에 의해 보호 지정 데이터를 무시하는 보호 해제 상태가 되어도, 특정 블록 지정 데이터에 의해 특정 블록으로 지정되어 있을 경우에는 보호 해제 신호를 무효화한다.  그 결과 보호 해제 상태가 되어도 특정 블록으로 지정되어 있는 메모리 블록으로의 기입·소거는 금지되어 데이터 보호의 레벨을 이중으로 할 수 있다.  그리고 특정 블록으로 지정된 메모리 블록에 기입·소거를 할 경우에는 단순히 보호 해제 신호를 보호 해제 상태로 하는 것이 아니라 보호 지정 데이터의 변경과 같이 보다 번잡한 조작을 필요하게 함으로써 데이터 보호의 안정성을 보다 높은 레벨로 할 수 있다.
Patent KR-19990087022-A (KR)
Title: 반도체 장치의 제조 방법
IPC: H01L21/8234
Filed: 1998-12-24
Abstract: 본 발명은 트랜지스터의 신뢰성을 향상시킴과 동시에, 이물질의 발생을 방지하여 수율을 향상시킬 수 있는 반도체 장치의 제조 방법을 제공한다. 
     본 발명에 따른 반도체 장치의 제조 방법은, 실리콘 기판(3)의 표면상에 제1 게이트 산화막(1a)이 형성된다.  제1 게이트 산화막(1a)상에 제1 다결정 실리콘막(4a)이 형성되고, 그 측면이 테이퍼(Taper) 형상으로 되도록 패터닝된다.  그리고, 제1 다결정 실리콘막(4a)에서 노출한 실리콘 산화막(1a)이 제거된 후, 열산화에 의해 제1 실리콘 산화막(1a)과 다른 막 두께를 갖는 제2 실리콘 산화막(1b)이 형성된다.  이로써, 듀얼 게이트 옥사이드가 제조된다.
Patent KR-19990036333-A (KR)
Title: 조명장치
IPC: F21V19/04
Filed: 1997-05-21
Abstract: 조명 장치는 한 쌍의 램프 홀더(5) 및 양 단부가 동일한 전기 램프(50)를 하우징(1)안에 있는 반사 수단(3)의 광학 축(4)에 교차되도록 각각 전기적 기계적으로 장착하기 위한 한 쌍의 접촉 부재(20)를 갖는 하우징(1)을 갖는다. 접촉 부재(20) 각각은 전기 접촉부(23)가 구비된 제 1 몸체부(21) 및 접촉부(23)에 대해 전기 램프(50)의 전류 리드(51)를 유지하도록 협동하는 제 2 몸체부(22)를 갖는다. 제 1 몸체부(21) 및 제 2 몸체부(22)는 각각 힌지 연결부(24)를 가지며, 그들을 서로 프레스하기 위해 그들로부터 멀리있는 자물쇠(25)를 갖는다. 실시예에서 하우징(1)은 하우징의 주요 부분(1')에 힌지되게 연결된 도어(6)를 갖는다. 실시예에서 힌지(24) 및 하우징(1)의 자물쇠(25)는 힌지(24) 및 접촉 부재(20)의 자물쇠(25)로서 작용한다. 조명 장치는 램프를 쉽고, 빠르고 안정된 전기 접촉을 제공한다.
Patent KR-20000064431-A (KR)
Title: 세정방법및세정조성물
IPC: C07C43/12
Filed: 1996-05-17
Abstract: 본 발명은 카테나 헤테로원자를 추가로 함유할 수 있으며 모노알콕시, 디알콕시 또는 트리알콕시 치환된, 퍼플루오로알칸, 퍼플루오로시클로알칸, 퍼플루오로시클로알킬 함유 퍼플루오로알칸, 또는 퍼플루오로시클로알킬렌 함유 퍼플루오로알칸 화합물을  1종 이상 함유하는 세정 조성물과 기재를 접촉시키는 것을 포함하여 기재 표면으로부터 오염물을 제거하는 방법에 관한 것이다. 이 화합물은 우수한 용해성을 나타낼 뿐만 아니라 환경적으로도 바람직하다.
Patent KR-20000064489-A (KR)
Title: 여러운영체제기술에서볼수없는상이한데이터형연산을수행하는방법
IPC: G06F9/30
Filed: 1996-12-17
Abstract: 여러 운영 체제 기술에서 볼 수 없도록 프로세서(505)가 상이한 데이터 타입을 수행하게 하는 상이한 명령 세트를 실행하는 방법. 본 발명의 일실시예에 따라서, 데이터 처리 장치(505)는 단일 논리 레지스터 파일(300,310)로서 소프트웨어에 최소한 논리적으로 나타나는 하나 이상의 물리 레지스터 파일을 이용하여 제 1 데이터 타입의 제 1 명령 세트와 제 2 데이터 타입의 제 1 명령을 모두 실행한다. 제 1 명령 세트를 실행하는 동안에, 단일 논리 레지스터 파일(300,310)은 플랫 레지스터 파일로서 동작된다. 제 2 데이터 타입의 제 1 명령을 실행하는 동안에, 단일 논리 레지스터 파일(300,310)은 스택 레퍼런스(340)  레지스터 파일로서 동작된다. 더욱이, 데이터 처리 장치는 논리 레지스터 파일(300,310)에 대응하는 태그 세트(320,330)내의 모든 태그를, 제 1 명령 세트의 실행을 시작하는 때와 제 1 명령의 실행을 완료하는 때사이에서 비공백 상태로 바꾼다.
Patent KR-19990082150-A (KR)
Title: 금속분말의 제조방법 및 제조장치
IPC: B22F9/28
Filed: 1997-12-01
Abstract: 본 발명은 금속 니켈에 염소 가스를 접촉시켜 금속 염화물 가스를 연속적으로 발생시키는 염화공정 및 상기 염화공정에서 생성된 금속 염화물 가스를 환원성 가스와 접촉시켜 금속 염화물을 연속적으로 환원하는 환원공정을 포함하는 금속분말의 제조방법을 제공한다. 염소 가스의 공급량을 제어하는 것으로서 금속 염화물 가스의 발생량을 제어할 수 있어서, 생성되는 금속분말의 입경을 확실히 제어할 수 있다. 그리하여, 본 발명에 의해 입경을 안정시킴과 동시에 0.1∼1.0 ㎛의 범위로 임의로 설정할 수 있다.
Patent KR-20000010562-A (KR)
Title: Security label with diffusing identifier medium and method of making same
Inventor: GOSSELIN RAYMOND R
IPC: G09F3/02
Filed: 1996-08-21
Abstract: PURPOSE: Disclosed is a security label having an identifier medium by diffused on a substrate and method of manufacturing same. CONSTITUTION: A security label (20) with the sheet material (21) having a first major surface. An adhesive layer (26) containing an identifier medium (32) is coated on the first major surface. A barrier medium (22) is selectively applied on an exposed surface of the adhesive layer for at least partially blocking diffusion of the identifier medium from the adhesive layer into a substrate (30). A release liner (28) may be provided that extends substantially over the exposed surface of the adhesive layer. A method of preparing the security label includes applying a barrier medium in the form of an identifier pattern to a low energy surface material. The low energy surface material is laminated to a security label having an adhesive layer containing an identifier medium. When the low energy surface material is removed from the adhesive layer, the barrier medium substantially transfers to the adhesive layer to block diffusion of the identifier medium into a substrate.
Patent KR-20000011010-A (KR)
Title: Fluorochemical polyurethanes, providing good laundry air-dry performance
Inventor: AUDENAERT FRANS A
IPC: C08G18/83
Filed: 1997-05-12
Abstract: PURPOSE: Provided is a composition including a compound comprising functional fluorochemical oligomer and polyurethanes derived from isocyanates which is suitable to impart durable oil- and water-repellency and good laundry air-dry performance to substrates, such as fibers, woven or non-woven fabrics, carpets, leather and paper. CONSTITUTION: The fluorochemical polyurethane compound is represented by formula(I) and is prepared by reacting: a fluorochemical oligomer comprising the oligomerization product of fluorochemical monomers alone or in combination with fluorine-free monomers, in the presence of at least one functionalized chain transfer agent; a di-, tri-, or tetravalent isocyanate or combination thereof, at least one difuctional chain extender, and at least one blocking or masking group. By treating the surface of substrates with a composition containing the compound with an amount of 0.01wt.% to 5wt.%, good laundry air-dry performance was possible to obtain.
Patent KR-20000015812-A (KR)
Title: Radio receiver
Inventor: RICHARDS ANTHONY HILSON
IPC: H03D7/14
Filed: 1998-02-16
Abstract: PURPOSE: Disclosed is a radio receiver including damping resistors which can serve to stabilize double-balanced mixer circuit and prevent it from going into oscillation. CONSTITUTION: The radio receiver having a double-balanced mixer stage comprises two pairs of emitter coupled transistors (T1 to T4), the common emitters of each pair of transistors being connected to identical current sources (T5, T6 and T9). A local oscillator signal is applied differentially to junctions (58, 60) of the base electrodes of the first and fourth transistors (T1, T4) and the second and third transistors (T2, T3), respectively. The rf input signal is applied to the common emitter junctions (50, 52) via damping resistors (R3, R4) which are also connected to respective current sources. Outputs from the pairs of emitter coupled transistors are coupled to cascode stages (66, 68). Further damping resistors (R1, R2) are connected between the differential local oscillator input (22A, 22B) and the junctions (58, 60) of the base electrodes.
Patent KR-20000028542-A (KR)
Title: Torque sensor
Inventor: SHATO KOUICHI
IPC: B62D119/00
Filed: 1999-01-14
Abstract: PURPOSE: A torque sensor is provided to reduce the costs, calorific value since complicated neutrality control via controlling device is not required, to increase the reliability, and to realize a unit system. CONSTITUTION: A control calculation unit(230) changes the operation time of a coil and sample hold time for detecting a torque. A storing unit stores an initial value of each element of a torque sensor(100). A torque detecting unit(220) detects the torque based on sampling of excessive voltage of the coil. A detector compares the current value of each element of the torque sensor and the initial value of the storing unit during the torque detecting is not performed so that troubles of each element of the torque sensor are detected.
Patent KR-20000051265-A (KR)
Inventor: KIM TAEK YOUNG
IPC: B64G1/22
Filed: 1999-01-20
Abstract: PURPOSE: A heat pipe apparatus utilizing phase change material is provided to minimize temperature change, size of heating plate, and use of heater while storing by a phase change characteristic the heat generated when the heat value is maximum and re-utilizing the heat generated when heat value is minimum. CONSTITUTION: A heat pipe apparatus comprises a heat pipe(4) arranged under a top(5) of a heat dissipating plate for permitting an easy thermal distribution, a spacer(2) installed between the heat pipe(4) and the bottom of the heat dissipating plate so as to assist a heat transmission from interior of the plate to the outside, the spacer(2) being sealed and phase change material at solid/liquid state fills an interior(3) of the sealed spacer(2).
Patent KR-20000051286-A (KR)
Inventor: WOO HUI GON
IPC: H04L12/28
Filed: 1999-01-20
Abstract: PURPOSE: A method for controlling communication of a field bus communication system is provided to supply real-time communication services by using an open-type standard local area network(LAN) card as a communication network interface card instead of a field bus exclusive communication card, and by making a real-time communication protocol to mount the protocol on a standard LAN when the LAN is utilized in a control automation system, without subordinating the field bus communication system to a specific system provider. CONSTITUTION: Many nodes control corresponding control points in a plant control automation field bus communication system. A method for controlling communication of the field bus communication system comprises the steps of: classifying aperiodic data generated from the control points, by considering the aperiodic data as periodic data of specific unit periods or minimum sampling periods; classifying periodic data of various sampling periods generated from the control points, by considering the periodic data as the periodic data of the minimum sampling periods; binding the classified aperiodic data and the classified periodic data into one data block to group the data; and transmitting the data block to a period under the minimum sampling periods.
Patent KR-20000051930-A (KR)
Inventor: JEONG GI RO
IPC: H01L21/324
Filed: 1999-01-28
Abstract: PURPOSE: A rapid thermal processing(RTP) apparatus having an improved uniformity of temperature is provided to reduce a processing defect by maintaining a uniformity in a board regardless of a geometrical structure of a heat source and its partial damage. CONSTITUTION: A rapid thermal processing(RTP) apparatus having an improved uniformity of temperature comprises a plurality of heat source lamps and a plurality of zoom lens arrays(90). The plurality of heat source lamps radiate radiation energy for heating a board. The plurality of zoom lens arrays are positioned between the board and the heat source lamp to overlap and diffuse the radiation energy from the respective heat source lamps to the surface of the board.
Patent KR-20000052028-A (KR)
Inventor: LEE YONG CHUL
IPC: H04B7/26
Filed: 1999-01-29
Abstract: PURPOSE: A method of detecting transmission error probability between base station and terminal station in the wireless local loop is provided to obtain credibility in the wireless block. CONSTITUTION: A method of detecting transmission error probability between base station and terminal station in the wireless local loop comprises the steps of: the related constants initialized(S10) and message receiving in stand-by status(S20); creating and transmitting data(S50) in case of approval of demand for using the wireless block(S30), returning to the stage of demanding for using the wireless block; returning to the message stand-by stage in case of approval on demand for deactivating the wireless block(S60), returning to the deactivating demand stage in case of disapproval.
Patent KR-20000055904-A (KR)
Inventor: KIM SUN DONG
IPC: C02F1/74
Filed: 1999-02-11
Abstract: PURPOSE: Provided is an economical process for making a grey water system which is recycled perfectly from sewage, wastewater, animal waste, and excretions. CONSTITUTION: A process comprises the steps of: eliminating a floating material, a suspended material by a screen(1) and sending the wastewater to a water tank(2) containing an ultrasonic aeration device(4,5); supplying oxygen to the water tank(2) to prevent decay and to oxidize organic and inorganic compounds by an ultrasonic air device(22); passing the wastewater continuously through a pyramidal oxidation device(6) to accelerate an oxidation of the organic and inorganic compounds by a circular pump(9); injecting chemicals for a solidification into a chemical mixing device(8); separating the wastewater into concentrated sludge and filtered water by a coagulation levitation filter(15); and sending the concentrated sludge to a dewatering device(20) and the filtered water to an ozone reactor(16) containing an ozone initiation device(18) to perform an ozone reaction for purifying the water.
Patent KR-20000059330-A (KR)
Inventor: KWON HYEOK JUNG
IPC: E21C37/18
Filed: 1999-03-02
Abstract: PURPOSE: An electric impactor cell for plasma blasting is provided to achieve an improved impact force and to reduce the cost for hard rock mining while utilizing an impactor cell with a plurality of gaps so as to allow a simultaneous ignition at plural areas of rock. CONSTITUTION: An electric impactor cell comprises the first electrode having a plurality of conductors(37,38,39,40) which are connected forming continuously gaps(33,34,35,36) by non-conductors, the first electrode being applied with a high voltage; the second electrode separated from the first electrode by a predetermined spacing; and a cartridge accommodating portions of the first and the second electrodes in such a manner as to insulate the accommodated portions from each other, the cartridge being filled with electrolytic substance. When the first electrode is applied with a high voltage, the plurality of conductors simultaneously discharge electric current through the gaps. Thus, the heat energy is discharged at the plural areas of the catridge, thereby improving impact force.