baber/WOPTO huggingface dataset:
Patent KR-20040011704-A (KR)
Title: A Pelvis Correction Device
Inventor: HA JEON HO
IPC: A61F5/02
Filed: 2002-07-30
Abstract: PURPOSE: A pelvis correction device is provided to correct widen pelvis of woman after parturition or the like by utilizing air-pressure to urge and press the pelvic region. CONSTITUTION: The device comprises a pelvis enclosure(10) to be mounted on the pelvis; a number of air pockets(20) placed on inner side of the pelvis enclosure(10); an air input element to provide the air pressure; a vibrational motor(31) to generate the vibration on area of the pelvis enclosure(10); and a low-frequency generator(32) on hip area. The air input unit comprises an air-pump connected to the air pockets(20), a controller for the air-pump, a switch part, and a display part to receive and show signals from the controller.
Patent KR-20030017430-A (KR)
Title: A driving circuit of electrooptic panel, driving method, electrooptic apparatus and electronic equipment
Inventor: AOKI TORU
IPC: G02F1/133
Filed: 2002-08-23
Abstract: PURPOSE: A driving circuit of an electro-optic panel and a method thereof, an electro-optic apparatus and an electronic device are provided to prevent lowering of display quality by generating sampling signals properly in deviating the phase of enabling pulse against the image signal or overlapping noise. CONSTITUTION: A driving circuit for an electro-optic panel is composed of a scan line driving circuit(150) applying a signal to turn on a transistor by selecting the scan line; a data line driving circuit(130) generating the shift pulse for selecting the data line, and outputting the sampling signal by restricting the width of the shift pulse to the enabling pulse; a sampling circuit(140) supplying the image signal to one or more data lines by sampling the image signal during the pulse of the sampling signal; a dummy circuit(120) outputting monitor and phase difference signals; and an enabling pulse adjusting circuit adjusting the phase of the enabling pulse. A timing control circuit(200) has a delay circuit group delaying the reference clock signal, a selection circuit selecting the signals, and an enabling signal generating circuit outputting the enabling signal. The selection signal is output based on the phase difference signal.
Patent KR-20040020736-A (KR)
Title: Method for folder searching of mp3 play
Inventor: JUN SEUNG WON
IPC: G11B20/04
Filed: 2002-09-03
Abstract: PURPOSE: A folder searching method for MP3 reproduction is provided to automatically generate an MP3 file list when an MP3 file folder to be reproduced is selected. CONSTITUTION: An MP3 file is searched in an upper root folder(S101). When the MP3 file has been searched(S102), the file is stored in an MP3 file list(S103). It is judged whether a lower folder to be searched exists or not(S104). When the lower folder exists(S105), an MP3 file is searched in the lower folder(S106). The MP3 file searched in the lower folder is stored in the list. The procedure of searching an MP3 file in a lower folder and storing the searched MP3 file in the list is repeated.
Patent KR-20040021447-A (KR)
Title: Apparatus for controlling blowoff force of air-conditioner used both cooler and heater and method thereof
Inventor: KIM SEONG TAE
IPC: F24F11/02
Filed: 2002-09-04
Abstract: PURPOSE: A device and a method for controlling the wind direction of an air conditioner for both cooling and heating are provided to directly measure a temperature of air discharged from the air conditioner in the beginning of heating by using a temperature sensor mounted to a discharge hole, so that the air conditioner is driven by a set wind force when the sensed temperature is higher than a set temperature. CONSTITUTION: A device for controlling the wind direction of an air conditioner for both cooling and heating includes a temperature sensor(300) mounted to a discharge hole of the air conditioner for measuring the temperature of discharged air. A user set a discharge temperature and a wind force for initial hot wind via an input part(310). A fan motor(330) drives a blower fan(340) to discharge the heated air to a room. A control part(320) compares the input set temperature with the discharge temperature sensed by the temperature sensor and controls the fan motor according to the set wind force.
Patent KR-20030024597-A (KR)
Title: Doppler signal processing apparatus and ultrasonic diagnostic apparatus
Inventor: AMEMIYA SHINICHI
IPC: A61B8/06
Filed: 2002-09-16
Abstract: PURPOSE: To remove an effect of window processing when carrying out window processing of Doppler signals of a time domain, transferring to a frequency domain and returning to the time domain. CONSTITUTION: Doppler signals of a prescribed length in a time domain are extracted, signals extracted are subjected to window processing, signals subjected to window processing are transformed to signals of a frequency domain by the Fourier transform, signals of the frequency domain are subjected to prescribed processing, and then transformed to signals of the time domain by the inverse Fourier transforms. When outputting signals of the time domain as acoustic signals, window processing is executed, using a window having a truncated profile, and Doppler signals are extracted to ensure that signals previously extracted and those extracted later will overlap each other in a part equivalent to the flat portion of the window.
Patent KR-20040025230-A (KR)
Title: SMS & MMS Multi-language interactive Global Service System
Inventor: BANG IL JU
IPC: H04W4/18
Filed: 2002-09-18
Abstract: PURPOSE: A multi-language short message service and multimedia message service interactive global service system is provided to allow users to transmit/receive multimedia contents without being restricted by the operating system and language. CONSTITUTION: A method for providing a multi-language short message service and multimedia message service interactive global service system comprises a step(301,302) of inputting user data; a step(303) of permitting a user to select a sample of multimedia contents; a step(305) of classifying and transmitting the multimedia data input by the user; a step(308) of translating the character data when the user has requested a translation of character data; a step(310) of processing data; and a step(312) of transmitting the processed data to the mobile communication terminal of the message receiving party.
Patent KR-20040029704-A (KR)
Title: Apparatus and Method of Receive/Send Line Selecting
Inventor: CHOI DU HWAN
IPC: H04M1/00
Filed: 2002-10-02
Abstract: PURPOSE: A device for selecting receiving/transmitting lines and a method therefor are provided to monitor states of a receiving line and a transmitting line, and to connect a telephone to either the receiving line or the transmitting line, thereby separately performing receiving/transmitting functions through different communication provider lines by using the one telephone. CONSTITUTION: A receiving/transmitting line state monitor(110) monitors voltage changes of a transmitting line, senses whether the transmitting line is busy, detects a ring signal of a receiving line, and senses whether a call is received. The receiving/transmitting line state monitor(110) monitors voltage changes of the receiving line, and senses whether the receiving line is busy. The receiving/transmitting line state monitor(110) controls a line selection switch(120) in order to connect a tip or a ring line of a telephone(200) to a tip or a ring line of the transmitting line or the receiving line according to states of the sensed receiving and the transmitting lines. The line selection switch(120) connects the tip or the ring line of the telephone(200) to the tip or the ring line of the transmitting line or the receiving line under control of the receiving/transmitting line state monitor(110).
Patent KR-20040032557-A (KR)
Title: optical amplifer system of the WDM using an optical channel observing function
Inventor: LEE MUN SEOP
IPC: H04B10/2581
Filed: 2002-10-10
Abstract: PURPOSE: An optical amplifier of a WDM(Wavelength Division Multiplexing) system using an optical channel monitoring function is provided to enhance amplification characteristics by automatically calculating an output gain of an optical signal whenever the optical signal is inputted. CONSTITUTION: An optical multiplexing unit(1) multiplexes optical signals of a long wavelength and a short wavelength and outputs them. A short wavelength optical power measuring unit(2) measures optical signal power of a C-bandwidth of an optical wavelength signal outputted from the optical multiplexing unit(1) and outputs it. A long wavelength optical power measuring unit(3) measures optical signal power of an L-bandwidth of a optical wavelength signal outputted from the optical multiplexing unit(1) and outputs it. A calculation controller(4) calculates a difference value between the optical power respectively inputted from the short wavelength optical power measuring unit(2) and the long wavelength optical power measuring unit(3) and outputs it. A transmission optical amplifier(5) corrects optical wavelength signal outputs of the optical multiplexing unit(1) according to a gain correction signal and optically amplifies it to output it. A reception optical amplifier(7) is connected to the transmission amplifier(5) and an optical demultiplexing unit(8) is connected to the reception optical amplifier(7).
Patent KR-20040036151-A (KR)
Title: Method of manufacture remake material using wasted packing film
Inventor: CHOI SEONG MUK
IPC: B29B17/00
Filed: 2002-10-23
Abstract: PURPOSE: A process for producing recycled aggregate is provided from waste combined package film to prevent environmental and secondary contamination and to produce high cost recycled material with hardness and intensity. CONSTITUTION: The process comprises steps of preparing waste package film without film; firstly melting the film by introducing the film in an extruder; forming a first molded material having a diameter of 30 to 40cm with a pressure of 200 to 300 kg/cm¬2 after the first melting is complete; removing printed ink or impurities coated over the film while naturally cooling the first molded material; removing residual gas from the first molded material while producing a broken material having 15 to 20 mm size; secondly melting the broken material at 180 to 200 deg.C in the extruder; then forming a final product by cutting a secondary molded material from the extruder into 5mm size.
Patent KR-20030040150-A (KR)
Title: Steel material having improved fatigue crack driving resistance and manufacturing process thereof
Inventor: KONDA NOBORU
IPC: C22C38/12
Filed: 2002-11-14
Abstract: PURPOSE: Provided are a structural steel material with improved resistance against fatigue crack propagation, thus being suitable for use in applications where a steel material is expected to undergo repeated loads, and a method for manufacturing the same. CONSTITUTION: The structural steel material is characterized in that it has a cyclic softening parameter of at least 0.65 and at most 0.95, the cyclic softening parameter being represented by the ratio (sigma 15/sigma 1) of the stress at the maximum strain in the first cycle (sigma 1) to that in the 15 th cycle (sigma 15) measured when a waveform of incremental and decremental cyclic loads is applied 15 times with a maximum tensile and compressive strain of +/- 0.012, with a frequency of 0.5 Hz, and with the number of waves to the maximum strain being 12. The structural steel material comprises C 0.02 to 0.20 wt.%, Si 0.60 wt.% or less, Mn 0.50 to 2.0 wt.%, Al 0.003 to 0.10 wt.%, Cu 1.5 wt.% or less, Ni 1.5 wt.% or less, Cr 1.20 wt.% or less, Mo 1.0 wt.% or less, V 0.10 wt.% or less, Nb 0.10 wt.% or less, Ti 0.10 wt.% or less, B 0.0003 to 0.0020 wt.%, Ca 0.0005 to 0.010 wt.%, a balance of Fe and incidental impurities, wherein a value of carbon equivalent, Ceq, represented below is in the range of from 0.28 to 0.65 %, Ceq (%) = C + Si/24 + Mn/6 +Ni/40 + Cr/5 + Mo/4 + V/14.
Patent KR-20040049922-A (KR)
Title: Loess composition having elasticity
Inventor: CHO OK HYUN
IPC: C04B14/10
Filed: 2002-12-05
Abstract: PURPOSE: Provided is a yellow earth composition with flexibility and beneficial effects of yellow earth by mixing yellow earth with water-soluble liquid plastic resin. Accordingly, the resultant yellow earth is widely applied to the products such as mats, cushions, fruit balls, car interiors, etc. CONSTITUTION: The flexible yellow earth contains 70-80wt.% of yellow earth removing impurities(sands) and 20-30wt.% of moisture with water-soluble liquid plastic resin obtained by mixing 10-15wt.% of ethylene vinyl acetate for increase of viscosity, 6-12wt.% of acrylic resin and 4-8wt.% of dibutyl phthalate for increase of flexibility, and heating a mixture to 200deg.C.
Patent KR-20040055423-A (KR)
Title: Lithium Ion Polymer Cell and Manufacturing Methode thereof
Inventor: KANG UK GYU
IPC: H01M10/058
Filed: 2002-12-21
Abstract: PURPOSE: Provided is a lithium ion polymer battery preventing the inside short-circuit of a case and an electrode plate assembly and keeping the thickness of a continuous jelly roll relatively uniformly and a preparation method thereof. CONSTITUTION: The lithium ion polymer battery contains: the electrode plate assembly formed by winding a cathode plate, an anode plate, and a separator in the form of a jelly roll, wherein the cathode plate and the anode plate are formed by spreading active materials on a cathode current collector and an anode current collector; a case(61) putting the electrode plate assembly therein and a cover(61a) of the case(61); a cathode lead and an anode lead(63) welded each to one side of the cathode current collector and the anode current collector; a first tape(65) and a second tape(66) attached asymmetrically to both sides of the cathode lead and the anode lead(63), wherein the first tape(65) is extended longer than the second tape(66) to the outside.
Patent KR-20040057595-A (KR)
Title: Method for fabricating transistor having low threshold voltage
Inventor: YOON GYEONG IL
IPC: H01L29/78
Filed: 2002-12-26
Abstract: PURPOSE: A method for manufacturing a transistor with low threshold voltage is provided to reduce interface state density of SiO/Si by performing hydrogen annealing to a transistor part with low threshold voltage. CONSTITUTION: A gate oxide layer(15) and a gate electrode(17) are formed on a silicon substrate(11) defined by a normal transistor part(200) and a transistor part(100) with low threshold voltage. A source/drain region(23) is formed in the substrate. The first contact hole is formed to expose the transistor part by selectively etching the first interlayer dielectric(25). The first conductive pattern(29) is formed in the first contact hole. The second contact hole is formed to expose the normal transistor part and the first conductive pattern. The second conductive pattern is formed in the second contact hole. The third contact hole is formed to expose an opening part of the transistor part and the second conductive pattern of the normal transistor part. The third conductive pattern is formed in the third contact hole. Hydrogen annealing is performed to the transistor part through the opening part.
Patent KR-20040059566-A (KR)
Title: Small CDMA BTS
Inventor: KIM JUN MAN
IPC: H04B7/155
Filed: 2002-12-27
Abstract: PURPOSE: A compact CDMA base station system is provided to minimize the power consumption by executing the functions of the controller of a GPS receiver, as well as the functions of the controller of a base station, through one controller. CONSTITUTION: A GPS engine(102), connected with a GPS antenna(101), is connected to an existing base station control part(103) so that the base station control part(103) can process GPS signals. The control part(103), connected with a base station antenna(104), an RF transmit-receive part(105), and a channel element(106), controls the usual operations of the whole base station system. Also the control part(103) executes data/voice interfacing with a CDMA base station controller(200) through an interface part(107).
Patent KR-20040060225-A (KR)
Title: Generation apparatus of Carbon cluster including fullerenes and Sugars and products thereof
Inventor: CHOI CHANG MIN
IPC: C01B31/02
Filed: 2002-12-30
Abstract: PURPOSE: Provided is a device for producing carbon cluster and saccharide, which prepares the carbon cluster such as fullerenes and saccharides by generating carbon arc plasma in the water, and products prepared thereby. CONSTITUTION: The device comprises a carbon arc plasma generating power source device (20) consisting of a switch, a transformer and a reactance, a three-phase alternating current source (10) connected to the carbon arc plasma generating power source device, an electrode controlling torch part (30) having an electrode controlling torch (36) controlling intervals between carbon electrodes, a fixing part located on the center of the electrode controlling torch part to support the electrode controlling torch, a connecting part joined to each electrode controlling torch to support the electrode controlling torch downwardly inclined to the center direction and carbon electrodes fixed on the terminal end of the electrode controlling torch and displaced along the center line with a 120° equal interval with the terminal end being submerged in the water and a water tank (50) storing water (55) activated by the arc plasma (60).
Patent KR-20040061272-A (KR)
Inventor: KIM CHANG IL
IPC: H01L27/108
Filed: 2002-12-30
Abstract: PURPOSE: A method for fabricating a capacitor of a semiconductor device is provided to prevent a storage node from being fallen, by forming a support layer on an oxide layer, by eliminating the support layer between cells and an oxide layer pattern by a wet method and by removing the rest of the support layer by a dry method. CONSTITUTION: An interlayer dielectric(32) is formed on a semiconductor substrate(30). An insulation layer for defining a storage node region is formed on the interlayer dielectric. A support layer is formed on the insulation layer. The support layer and the insulation layer are patterned by using an etch mask for defining the storage node region to form a support layer pattern and an insulation layer pattern so that a storage node contact hole is formed. The storage node(46) is formed in the storage node contact hole. A photoresist layer pattern is formed in a region of the resultant structure where a pattern collapses. The support layer exposed by the photoresist layer pattern is eliminated. The oxide layer pattern is removed by a wet etch method. The photoresist layer pattern is removed. The rest of the support layer pattern is removed by a dry etch method.
Patent KR-20040061694-A (KR)
Title: Wafer level packaging method for surface wave filter
Inventor: CHO SU JE
IPC: H03H9/64
Filed: 2002-12-31
Abstract: PURPOSE: A method for packaging a surface acoustic filter in wafer level is provided to increase productivity by attaching a patterned protecting cap and sawing it in a size corresponding to a surface acoustic filter. CONSTITUTION: Filters(302) and electrodes(303) are formed on a wafer(301) by repeating photolithography, etching, and deposition processes. Adhesive layers(304) are formed on the electrodes(303). Protecting cap(305) are attached on the adhesive layers(304) through photolithography. The protecting caps(305) include a resin-like material. A protecting cap wafer(305w) is attached on the protecting caps(305) and is unified in order to secure an appropriate position accuracy between the protecting caps(305). In order to prevent penetration of moisture, an additional coating process is performed on the protecting cap wafer(305w).
Patent KR-20020023410-A (KR)
IPC: H04N5/50
Filed: 2000-07-13
Abstract: 본 발명은, 복수의 무선 및 케이블 텔레비전 채널과 관련된 정보를 자동으로 프로그램하기 위한 장치에 관한 것이다. 자동 프로그래밍 신호를 수신하자마자, 장치는 상기 관련된 무선 또는 케이블 채널이 디지털인지 아날로그인지를 결정하기 위해 각 채널로부터 아날로그 및 디지털 텔레비전 신호를 검출한다. 장치는 각 채널과 관련된 정보를 메모리 유닛에 저장한다. 모든 채널의 결과는 출력 디바이스 또는 모니터 상에 채널 조사 목록으로 디스플레이된다. 복수의 무선 및 케이블 텔레비전 채널을 처리하기 위한 방법이 또한 제공된다. 이 방법은, 채널을 선택하며, 상기 선택된 채널과 관련된 아날로그 또는 디지털 신호를 수신하며, 이 채널이 아날로그인지 디지털인지를 결정하며, 그 결과를 저장하며, 모든 채널이 선택되어질 때까지 이러한 단계들을 반복한다. 게다가, 소프트웨어 프로그램을 저장하는 컴퓨터로 판독 가능한 매체가 제공된다. 이러한 프로그램은, 컴퓨터에 의해 실행될 때 컴퓨터가 본 발명에서 구현된 방법을 수행하게 한다.
Patent KR-20020022784-A (KR)
IPC: B60R21/017
Filed: 2000-07-27
Abstract: 본 발명은, 에어백의 팽창전개의 제어를 가능하게 하고, 그 제어의 신뢰성을 향상시킬 수 있는 가스 발생기를 제공하는 것을 목적으로 하고, 본 발명의 가스 발생기(D)는, 각 연소실(3,4)내의 가스발생제(7)를 2개의 점화기(8,9)에 의해 각각 연소시키는 것이다.  그리고, 각 점화기(8,9)를, 통전에 의해 발열하는 브리지선(24)으로 착화약(26)을 발화시키는 전기식으로 하고, 브리지선(24)의 저항치를 상이하게 한 것이다.
Patent KR-20020050226-A (KR)
Title: Process for recovering organic hydroxides from waste solutions
IPC: B01D17/06
Filed: 2000-08-08
Abstract: In one embodiment, the present invention relates to a process for recovering an onium compound from waste solutions or synthetic solutions containing the onium compound and impurities including the steps: contacting the waste solution or synthetic solution with a metal ion scavenger to remove metal ion impurities, wherein the metal ion scavenger comprises at least one of a chelating compound, a nanoporous material, and a magnetically assisted (MACS) material; charging the waste solution or synthetic solution to an electrochemical cell containing at least two compartments, a cathode, an anode and a divider and passing a current through the cell whereby the onium compound is regenerated or produced; and recovering the onium compound from the cell.
Patent KR-20020031164-A (KR)
IPC: B60N2/225
Filed: 2000-08-05
Abstract: 본 발명은 시트 부분에 연결된 고정된 부품(11) 및 등받이에 연결된 조정 가능한 부품(12)을 포함하는 조정 전기자에 관한 것이다.  상기 전기자 부품들(11, 12)은 작동 부재(13)에 의해 서로 연결된다.  상기 두 전기자 부품(11, 12)의 상대 위치를 조정하기 위해 기어의 형태를 가진 조정 및 고정 장치가 제공된다.  상기 작동 부재는 편심부(14)를 가지며, 상기 편심부 상에는 하나의 전기자 부품(12)이 장착되는 반면, 다른 하나의 전기자 부품(13)은 상기 편심부(14)의 베어링으로서 작용한다.  상기 편심부(14)는 하나의 걸쇠(20, catch)에 부분적으로 겹치고, 서로에 대해 기울어져있는 2 개의 쐐기부(27)로 이루어져있다.  즉, 상기 편심부는 그의 좁은 측면 사이에 맞물리는 걸쇠부(29)와, 상기 쐐기부(27)의 넓은 측면을 별개로 움직이는 축전지로 이루어져있다.  상기 작동 부재(13)는 선택적으로 트랜스미션 로드와 회전 불가능한 연결을 위한 중앙 수용부를 포함한다.  조정 전기자(10)가 조정을 위해 처음으로 움직일 때 자유 이동(free movement)을 감지할 수 없도록, 상기 걸쇠(20)는 부시(21) 및 상기 부시(21)에 회전 불가능하게 연결되는, 걸쇠부(29)를 포함하는 링(26)으로 형성된다.  이 때 걸쇠 링(26)은 전기자 부품(11)에 장착되고, 상기 걸쇠부(29)를 포함하지 않는 상기 걸쇠 링(26)의 주변 영역에서 쐐기(27)의 베어링으로서 작용한다.
Patent KR-20020050244-A (KR)
Title: 수술 기구
IPC: A61B17/34
Filed: 2000-10-20
Abstract: 본 발명은 인간 환자에게 연장 요소를 삽입하기 위한  수술 기구를 제공한다. 본 발명의 바람직한 실시예에 있어서, 기구는 여성 환자의 전방 질벽과 복부 사이의 통로의 일반적인 곡률에 해당하는 아크를 한정하고 일단에 커팅 팁을, 타단에 핸들을 가지는 만곡된 중공의 샤프트를 가진다. 연장 쓰레딩 요소는 필라멘트 요소를 샤프트를 통해서 당기는데 사용된다. 일단 필라멘트 요소가 위치하면, 샤프트는 요소를 위치에 남겨둔 채로 환자로부터 제거된다. 바람직하게는 기구는 환자의 요도 주위를 지나가고 그녀의 요 조절을 향상하도록 환자를 돕는 U자형의 필라멘트 재료의 루프를 환자에게 삽입하는 데 사용된다.
Patent KR-20020048993-A (KR)
Title: Polyester fiber and fabric prepared therefrom
IPC: D01F6/84
Filed: 1998-08-18
Abstract: A polyester resin is disclosed that satisfies the following conditions (1) - (3):  (1) the polyester resin comprising a copolyester obtained by copolymerizing terephthalic acid or dimethyl terephthalate, trimethylene glycol and at least one compound selected from the group consisting a glycol, an aliphatic or alicyclic dicarboxylic acid and a poly(alkylene glycol); (2) the resin has an intrinsic viscosity of 0.4 to 1.2 being measured at 35  DEG C with o-chlorophenol using an Ostwald's viscometer; and (3) the resin has a degree of yellow tinting as represented by a b value of -2 to 10.
Patent KR-20020074161-A (KR)
Title: 로터리 상품 판촉 방법 및 시스템
IPC: G06Q20/20
Filed: 2000-11-17
Abstract: 본 발명은 전자 판매의 포인트, 인터넷 또는 비지니스 투 비지니스 판촉방법 및 시스템과 관련되고, 더 상세하게는 다양한 소매점에서의 고객의 구입 및 로얄티를 판촉하는 판매 판촉 방법과 관련된다. 특히, 본 발명은 참여중인 소매점에서  특정 타입 및 레벨의 구입을 행하는 쇼핑객이 로터리에서의 엔트리를 받을 수 있는 소매 판촉 시스템이다. 바람직한 실시예에서, 엔트리는 로터리 기간의 끝에 추첨된 숫자와 일치하는 것에 기초해서 다양한 분할로 프라이즈를 수상할 수 있는 숫자열을 포함하는 게임 티켓을 포함한다. 대안적으로 쇼핑객은 상품권 또는 임시 프라이즈를 받을 수 있다.
Patent KR-20020097142-A (KR)
IPC: H01L29/84
Filed: 2000-12-13
Abstract: A micromechanical structure is described which is disposed on a base body and requires protection from environmental influences by a covering body. Furthermore, electrical contacts are necessary for establishing contacts for the micromechanical structure. By skillfully carrying out a sawing-into operation and a sawing-through operation, it is possible to expose the electrical contact.