baber/WOPTO huggingface dataset:
Patent KR-19990067782-A (KR)
Title: 정밀 유체온도 조절장치
IPC: F25B21/02
Filed: 1999-01-08
Abstract: 본 발명의 목적은 금속을 부식하게 하는 강한 침식성이 있는 유체를 고정밀도로 온도조절할 때, 항온수를 이용하지 않고, 간단한 장치로 플루오르수지제의 튜브 자체를 직접적으로 주위로부터 효율 좋게 온도조절을 하는 것이다. 
     침식성 유체와 열교환하는 열교환블록(2)의 표면에 펠티에소자를 밀착고정하고, 이 펠티에(Peltier)소자의 동작제어에 의해 열교환블록을 통하여 상기 유체를 목표온도로 온도조절을 행한다. 이 정밀 유체온도 조절장치에서의 상기 열교환블록은, 열전도성이 좋은 금속재료로 이루어진 한 쌍의 상호간에 접합하는 전열판(11)으로 구성되고, 이 전열판의 접합면에 오목하게 설치된 반원형의 홈(12) 사이의 원형구멍 내면에 밀접하도록, 플루오르수지로 형성된 튜브(3)를 끼워넣는 것에 의해, 유체와 열교환기블록과의 사이에서 열교환을 행하는 열교환부를 형성한다.
Patent KR-20000051494-A (KR)
Inventor: KIM IN SOO
IPC: B27B31/00
Filed: 1999-01-22
Abstract: PURPOSE: A sawing machine is provided to achieve an enhanced outlet performance of sawdust and significantly reduced frictional resistance while restricting the sawing operation to be performed only when the teeth of the sawing machine are descending. CONSTITUTION: A sawing machine for automatically sawing woods loaded onto a transport board, the machine comprising a driving motor(110) for generating a power, a pair of driving gears(111, 121) rotating by the power from the driving motor and which are arranged at both ends of a driving shaft(130), a pair of saw driving gear(151, 152, 161, 162) having at side surfaces thereof eccentric bosses(151a, 152a, 161a, 162a) and which are connected to the driving gear so as to rotate in the same direction, a pair of eccentric plates(170, 180) to be coupled to the bosses having at both ends thereof balance weights, respectively, a pair of supporting axes(210, 220) fixed, as being separated by a predetermined spacing, to the plates(170, 180), and a saw(200) fixed and coupled to the supporting axes(210, 220).
Patent KR-20000055267-A (KR)
Inventor: KIM JUN SU
IPC: C08L33/18
Filed: 1999-02-04
Abstract: PURPOSE: Thermoplastic resin compositions are prepared which are excellent in mechanical properties, such as fatigue strength, strength, and fluidity. Therefore the resin compositions are useful for electric parts or automobile parts. CONSTITUTION: A resin compositions contain (a) 25-45 pts. by wt. of mixtures of graft copolymer resin having average particle size of 0.20-0.30 micrometers and graft copolymer resin having average particle size of 0.10-0.20 micrometers; (b) 55-75 pts. by wt. of mixtures of SAN resin having 34-36 wt% of acrylonitrile and 70,000-90,000 of weight mean molecular weight, and SAN resin having 31-33 wt% of acrylonitrile and 120,000-140,000 of weight mean molecular weight.
Patent KR-19990072436-A (KR)
Title: 송신전력제어장치및그방법과무선통신장치및그방법
IPC: H04B1/707
Filed: 1999-02-05
Abstract: 송신 전력 제어 장치에 있어서, 수신 신호로부터 희망파 수신 전력을 계산하는 부분과, 상기 수신 전력을 기억하는 부분과, 과거의 송신 전력을 기억하는 부분과, 수신 신호에 주기적으로 포함되는 제어 신호를 복조하는 부분과, 상기 송신 전력 설정값을 결정하는 부분을 가지며, 과거의 송신 전력, 희망파 수신 전력 및 제어 신호를 이용하여 송신 전력 설정값을 결정한다.
Patent KR-20000055399-A (KR)
Inventor: GWAK JEONG HO
IPC: H04N7/12
Filed: 1999-02-05
Abstract: PURPOSE: An apparatus for equalizing a digital broadcasting receiver is provided to perform a phase rotation for each of input data and pilot signal interpolated on a time axis. CONSTITUTION: An apparatus for equalizing a digital broadcasting receiver includes a phase rotator. The apparatus for equalizing a digital broadcasting receiver extracts a channel response at a pilot position, performs interpolation on both time axis and a frequency axis, and perform equalization by using dividing the output of interpolation by fast fourier transformed data. The phase rotator of the apparatus for equalizing a digital broadcasting receiver is implemented between the time axis interpolator and the frequency axis interpolator so as to change the phases of the fast fourier transformed data and the time axis interpolated data. The phase rotator includes a cosine look up table storing cos(2φ/N)kα and sine look up table storing sin(2φ/N)kα.
Patent KR-20000055532-A (KR)
Inventor: GIL GEE HYUNG
IPC: A61F7/00
Filed: 1999-02-08
Abstract: PURPOSE: A blood pressure falling device is provided, which drops blood pressure by stimulating a spot on the outside of a neck important for acupuncture with chill and heat without harmful side effects, and can lower the pressures in a short time stably. CONSTITUTION: An apparatus for falling blood pressure comprises a chill and heat generating part composed of thermoelectric module, a heat conducting part transmitting the chill and heat to outside to stimulating a body, which is joined to the generating part of chill and heat, a control part managing producing time and temperature of the generated chill and heat, a power supplying part for the generator, and an indicating part having a luminous element and a buzzer informing if power is supplied and completion of the producing time. The spot on the outside of a neck important for acupuncture is stimulated by the chill and heat of the generator by contacting the heat conducting part to the region of both sides of a neck to lower the blood pressure.
Patent KR-20000056695-A (KR)
Inventor: CHO YONG SEOK
IPC: B60K20/02
Filed: 1999-02-25
Abstract: PURPOSE: A foldable gear shift lever and system for operating the same is provided to constitute a gear shift lever as a structure being easily foldable, such that a space between a driver's seat and a side seat is easily secured, thereby a driver or a passenger easily shifts between the driver's seat and the side seat. CONSTITUTION: In a foldable gear shift lever and system for operating the same, the foldable gear shift lever comprises a lower lever(51) of which inner portion is provided with an actuator(55) and an upper portion is provided with a lower concave member(51') with an arc shape and an upper lever(53) of which a lower end is hinged to a push rod(56) of the actuator(55) and a lower portion is provided with an upper concave member(53') in a shape corresponding to the lower concave member(51') so as to maintain a folded or an unfolded state resulting from a rotation along the lower concave member(51') when the push rod(56) is moved upward and downward. The system for operating the foldable gear shift lever comprises the upper and a lower levers(51, 53), an oil pump(61) which supplies an oil pressure to the actuator(55) to move the push rod(56) upward and downward, a first switch(63) being operated by a driver so as to apply an electric power supply to the oil pump(61), and a second switch(65) mounted between the first switch(63) and the oil pump(61) to be turned on if an ignition switch(67) is turned on, the second switch being constituted such that the oil pump(61) is operated only when the first switch(63) is turned on while the ignition switch(67) is turned off. Accordingly, since the gear shift lever is freely folded only with a simple manipulation, the driver's or the passenger's convenience is improved.
Patent KR-19990077933-A (KR)
Title: 반도체결정성장장치및그성장방법
IPC: C30B15/00
Filed: 1999-03-16
Abstract: 반도체융해액으로부터 반도체결정을 성장시키는 장치에 있어서, 도가니는 반도체융해액을 유지한다. 전극은 반도체용액과 접촉하고 이 반도체융해액에 전류를 인가한다.  이 전극은 반도체결정과 동일한 재료로 형성된다.
Patent KR-19990078077-A (KR)
Title: 원자외선 노광용 포지티브 포토레지스트 조성물
IPC: G03F7/039
Filed: 1999-03-19
Abstract: 원자외선에 대한 노광용 포지티브 포토레지스트 조성물은 산의 작용에 의해 분해하여, 알칼리에서의 용해성을 증가시키는 수지, 및 화학선 또는 방사선의 조사로 산을 발생시키는 화합물을 포함하고, 상기 수지는 특히 지환식구조를 포함하는 특별한 구조를 가지는 반복단위 및 산의 작용에 의해 분해하는 기를 포함한다.
Patent KR-19990078078-A (KR)
Title: 액정표시장치
IPC: G02F1/133
Filed: 1999-03-19
Abstract: 도트(dot) 반전(反轉)구동용의 범용(汎用) 드라이버 IC에의 시분할(時分割) 구동의 적용을 고려한 경우에, 도트 반전구동용 드라이버 IC의 출력신호의 극성(極性)이 홀수, 짝수마다 역(逆)극성이므로, 시분할 구동을 행하면 도트 반전구동을 할 수 없는 상태가 발생하는 경우가 있다. 
     도트 반전구동을 이용한 액정표시장치에 있어서, 드라이버 IC(14)의 출력핀 수의 삭감이 가능한 시분할 구동을 적용하는 경우에, 시분할수를 홀수, 바람직하게는 3의 n곱(n은 자연수)으로 설정하고, 드라이버 IC(14)로부터 출력되는 시계열의 신호(도트 반전신호)를 시분할 스위치(16)에 의해 시분할하여 신호라인(12-1, 12-2, 12-3, ……)에 공급함으로써 완전한 도트 반전구동을 실현한다.
Patent KR-19990078098-A (KR)
IPC: G06F3/033
Filed: 1999-03-20
Abstract: 본 발명의 장치는 상이한 그래프 또는 상이한 아이콘(G1)이 표시되는 화면을 갖는다. 
     이들 그래프에는 상이한 상태(패시브 정보, 유효화될 정보, 유효화된 정보)가 할당된다.  넓은 음영(20)은 유효화될 정보에 할당되고, 좁은 음영(21)은 유효화된 정보에 할당된다.  패시브 정보에는 어떤 음영도 할당되지 않는다.
Patent KR-20000061440-A (KR)
Inventor: LEE GWANG SEONG
IPC: H01L21/027
Filed: 1999-03-26
Abstract: PURPOSE: An auto leveling device of a stepper is provided to achieve the high precision of the leveling by adjusting the size of the leveling beam. CONSTITUTION: A leveling device of a stepper comprises a beam source(21) for generating a leveling beam. A parallel lens(22) is installed at a front portion of the beam source(21) so as to allow the leveling beam incident into a wafer(27) to be parallel. An iris(23) for adjusting the size of the leveling beam is installed at a front side of the parallel lens(22). A reflected leveling beam is focused by a focusing lens(24). The focusing lens(24) is installed in an optical axis of the leveling beam which is reflected from the wafer(27). A position detecting device(25) is installed at a rear side of the focusing lens(24) so as to detect the position of a beam spot. A leveling stage(26) is installed on a wafer stage and is driven according to the beam spot signal.
Patent KR-19990078360-A (KR)
IPC: A61P13/00
Filed: 1999-03-29
Abstract: 본 발명은 하기 화학식 1의 화합물을 제조하는 방법에 관한 것이다: 
     
       
         
       
     
     상기 식에서, 
     R은 수소, 메틸 또는 플루오로이다. 
     이러한 방법중 유용한 중간생성물은 하기 화학식 4 및 화학식 5의 화합물을 포함한다: 
     
       
         
       
     
     
       
         
       
     
     상기 식에서, 
     R은 수소, 메틸, 또는 플루오로이고, 
     L은 이탈기이다.
Patent KR-20000065416-A (KR)
Inventor: LEE JUN HEE
IPC: A23L17/60
Filed: 1999-04-02
Abstract: PURPOSE: Double laver by attaching food compositions between a bottom laver and a top laver is provided, to combine a unique flavor and nutrients of laver with various kinds of food. CONSTITUTION: The preparation method of double layered laver comprises the following steps: (i) toasting laver at 180-250°C by using an electronic heater; (ii) applying an adhesive food composition(3) composed of 70-95wt% of oligosaccharide, 5-20wt% of sugar, 2-10wt% of dextrin or 80-95wt% of sorbitol to the inside(2) of a bottom laver(1); (iii) attaching food(4) composed of dried fruits such as banana, apricot, cured persimmon, or apple, dried seeds such as seeds from pumpkin and sunflower, sesame seed or peanut, and jerked meat including beef, squid or walleye pollack; (iv) covering with a top laver(5); and then (v) drying the double laver at a temperature of 40-60°C for 10hours, cutting and packing.
Patent KR-19990073086-A (KR)
Title: 가전기기의통합제어가가능한원격제어장치및그제어방법
Filed: 1999-04-20
Abstract: 본 발명은 가전기기의 통합제어가 가능한 원격제어장치 및 그 제어방법에 관한 것으로, 특히 분석할 리모콘(10)의 출력신호에 대응하는 가전기기(50)의 고유번호와 기능번호를 설정하기 위한 키입력부와, 리모콘(10)의 출력신호에서 캐리어 신호를 제거하여 컨트롤 신호를 분리해내는 적외선 센서와, 분리된 컨트롤 신호를 분석하여 이 컨트롤 신호의 복원에 필요한 분석 데이터를 추출해내는 중앙처리부로 이루어진 리모콘 신호 분석기(20)와; 리모콘 신호 분석기(20)에 의해 추출된 분석 데이터가 저장되는 메모리부와, 특정 가전기기(50)의 동작을 제어하기 위해 입력된 사용자의 제어명령에 따라 메모리부에 저장된 분석 데이터중 해당 가전기기(50)의 동작을 제어하는 컨트롤 신호를 복원하기 위해 필요한 분석 데이터를 찾아 로딩시키는 중앙처리부와, 로딩된 분석 데이터를 이용하여 컨트롤 신호를 복원하는 신호재생부로 이루어진 리모콘 신호 재생기(30); 및 특정 가전기기(50)를 제어하기 위해 사용자가 해당 가전기기(50)의 종류와 기능을 선택하면 리모콘 신호 재생기(30)로 선택된 가전기기(50)의 고유번호와 기능번호에 관한 데이터를 인가하는 제어기 (40)를 구비한다. 따라서, 리모콘(10)의 출력신호를 분석하여 추출한 분석 데이터를 이용하여 특정 가전기기(50)를 제어하기 위한 컨트롤 신호를 복원하고 이를 캐리어 신호와 함께 출력하므로, 다수의 가전기기를 통합제어할 수 있다.
Patent KR-20000066877-A (KR)
Inventor: KIM JUNG HO
IPC: H01M50/414
Filed: 1999-04-21
Abstract: PURPOSE: A lithium polymer secondary battery and a fabrication method of the same are provided to insert current controllers for enhancing the safety of the battery between an anode plate and a cathode plate. CONSTITUTION: A lithium polymer secondary battery comprises a cathode plate(21), an anode plate(22) and a separator(23). A cathode active substance layer(22b) is formed on at least one surface of a cathode collector(22a) in the cathode plate(21). An anode active substance layer(21b) is formed on at least one surface of an anode collector(21a) in the anode plate(22). The separator(23) is inserted between the anode plate and the cathode plate to insulate them. Further, the battery comprises an electrode assembly(20), a bottom case(31) and a top case(33) connected to the case(31).
Patent KR-20000073171-A (KR)
Inventor: KIM JONG BU
IPC: F24C7/00
Filed: 1999-05-07
Abstract: PURPOSE: A germicidal electric range is provided to remove toxic substances from food stuff by washing the food stuff with ozone water prior to cooking. CONSTITUTION: A range comprises a main body(1), a switch operation unit(2) arranged at a front surface of the main body and which is constituted by a plurality of switches, a switch control circuit board(21) for controlling on/off operation of the switching operation unit, a plurality of heating elements(3), a heating element control circuit board(32) for controlling on/off operation of the heating element, a radiating element(31) surrounding the heating elements, a blower fan(4) for discharging hot air from the interior of the main body to outside, a ceramic upper plate covering the main body and where a heating portion heated by the heating element is arranged, a space portion(5) arranged within the main body and which is separated from the heating element, an ozone producing case(6) fixed to the space portion and which is sectioned into an ozone producing chamber(6a) and an air pumping chamber(6b) by a diaphragm(61), an ozone producing device(62) constituted by an ozone producing circuit board(621) and a discharge portion(622) mounted to the ozone producing chamber of the ozone producing case, an air pumping device(65) for pumping air by a transformer(64) mounted in the air pumping chamber of the ozone producing case and supplying the pumped air to the ozone producing chamber, a receipt case(7) which is arranged at a portion of the main body to be extracted or retracted from or to the main body, a conveying hose(81) communicated to an interior of the ozone producing chamber of the ozone producing case and which is arranged to be extracted or retracted from or to the receipt case, and a bubble generator(8) connected to a free end of the hose so as to discharge the pumped air and ozone.
Patent KR-20000074321-A (KR)
Inventor: LIM IN GEON
IPC: H04N7/015
Filed: 1999-05-20
Abstract: PURPOSE: An apparatus and method for correcting a deviation of an image region having a motion in an interlaced frame is to correct a deviation occurred at the outline of the image. CONSTITUTION: An apparatus for correcting a deviation of an image region having a motion in an interlaced frame comprises: a first memory for storing a first field of an image including a series of interlaced frames; a second memory for storing a second field followed by the first field; a display unit for displaying the image; and an interfacing unit for moving a coordinate of an interlaced frame which is displayed on the display unit. A method for correcting a deviation of an image region having a motion in an interlaced frame comprises the steps of: storing an image data of a first field of an interlaced image having an image of a thing pictured having a motion; storing an image data of a second field followed by the first field; and fixing the image of the first field and moving the image of the second field.
Patent KR-20000074560-A (KR)
Inventor: HONG GI JEONG
IPC: G11B7/00
Filed: 1999-05-21
Abstract: PURPOSE: A method of controlling search of an optical disk is provided to convert time information in a lead-in area to be continuous with the time information in a data area, thereby rapidly performing data searching process. CONSTITUTION: A method of controlling search of an optical disk comprises the steps of: extracting time information on an optical disk and converting the time information in a lead-in area to be continuous with the time information in a data area; calculating a frame number on an optional track placed at the most inner side of the optical disk; detecting the time information corresponding to every jump starting position and every jump ending position when searching data; jumping to an outer side of the optical disk in a desired track number unit to enter into the data area if the jump ending position is placed in the lead-in area; backing up the time information corresponding to a last jumping position in the lead-in area; and calculating an initial track number in the data area between a starting portion of the data area adjacent to the lead-in area and an entering position of the data area.
Patent KR-20000075160-A (KR)
Inventor: KOO HYEONG MO
IPC: F24F11/00
Filed: 1999-05-29
Abstract: PURPOSE: An operation control method is provided to improve heating/cooling efficiency by controlling operation state of a compressor. CONSTITUTION: A method comprises a first step(S301,S302) of judging whether the other indoor unit is operating when an operation signal is input to one of the indoor units, a second step(S305) of outputting an outdoor unit operating signal regardless of a predetermined delay condition for the indoor unit to which the operation signal is input, if it is judged in the first step that the other indoor unit is operating, and a third step(S303,S304) of outputting an outdoor unit operating signal after a predetermined time period corresponding to the delay condition has lapsed, if it is judged in the first step that the other indoor unit is not operating.
Patent KR-19990083709-A (KR)
Title: 음력날짜표시시계
IPC: G04B19/26
Filed: 1999-06-16
Abstract: 본 발명은 음력날짜를 나타내는 시계로서, 말단부에는 중심에 대하여 동일한 각도로 24구획되어 있는 원형의 시판과; 상기 시판의 중심을 축으로 하여 24시간에 360°회전하는 시침과; 상기 시판의 중심을 축으로 하여 상기 시침과 같은 방향으로 24시간에 347.8°회전하는 달침과; 임의로 회전시킬 수 있으며, 상기 시판의 외곽에 위치하고, 중심에 대하여 동일한 각도로 복수개의 눈금이 형성되어 있는 음력표시링;을 포함하는 것을 특징으로 하는 음력날짜 표시시계이다. 
     본 발명의 시계는 시간과 음력날짜를 상대적으로 간편하게 파악할 수 있으며, 아울러 지구와 태양과 달의 실재 위치관계를 시각적으로 알아볼 수 있게 한다.
Patent KR-20000006319-A (KR)
Inventor: DWIREUBAUM THOMAS
IPC: H02M3/335
Filed: 1999-06-21
Abstract: PURPOSE: An improved switching mode power supply is provided wherein a control signal having DC(Direct Current) insulator does not need to transmit from a second part to a first part and zero voltage switching of a first switching device is secured. CONSTITUTION: A transformer(5) in the switching mode power supply comprises: a first winding coupled in serial with a first switching device(S1); and a second winding coupled in serial with a second switching device(S2). In operation, a first current(I1) flows through the first winding for a first period and a second current(I2) flows through the second winding for a second period. For the second period, a second part control unit is equipped to control an output voltage(U2) of an output current of the switching mode power supply. For the first period, a first control unit to control a part of the supplied voltage through the transformer(5) is equipped without any control signal transmission from the first part(6).
Patent KR-20010003520-A (KR)
Inventor: LEE SANG HWAN
IPC: G11C29/00
Filed: 1999-06-23
Abstract: PURPOSE: An output buffer of a semiconductor memory device is provided to reduce a peak current due to a pull-down transistor turning on so that a level of supplying voltage is stabilized. CONSTITUTION: An output buffer of a semiconductor memory device includes a pull-up transistor driver(10), a pull-down transistor driver(70), a pull-up transistor(30), a pull-down transistor(40), a bypass circuit(50) and a supplying-voltage level detector(60). The supplying-voltage level detector(60) detects a level of a supplying voltage(Vcc), and outputs a first and a second level sensed signals(aa,bb) to the pull-down transistor driver(70). The pull-down transistor driver(70) outputs driving signals of different gradients to a gate of the pull-down transistor(40), according to the first and second level sensed signals(aa,bb) from the supplying-voltage level detector(60).
Patent KR-20010004112-A (KR)
Inventor: LEE JONG O
IPC: G11C29/00
Filed: 1999-06-28
Abstract: PURPOSE: An apparatus for efficiently testing an inner ROM is provided to assign an expected value one by one every data stored in an inner ROM, compare an MISR calculation value corresponded to data to the assigned expected value every time to judge whether an error is or not, and thereby searching exactly an error position when an error is generated. CONSTITUTION: An apparatus for testing an inner ROM includes an address generating portion, a first selecting portion, an MISR(Multiple Input Signature Register) circuit portion(104), and a comparing device(106). The address generating portion sequentially generates from the 0th address to the last address of an inner ROM(100). The first selecting portion selectively outputs an address of the inner ROM which is sequentially outputted from the address generating portion. The MISR circuit portion is sequentially inputted the inner ROM data corresponding to the address of the inner ROM outputted from the first selecting portion, performs a specific calculation, and outputs a calculation value. The comparing device is controlled by a test ending signal becoming 'enable' when the test operation to the inner ROM is ended, compares the inner ROM data to each MISR calculation value and an expected value being sequentially inputted so as to be corresponded to each of the inner ROM data from the outside, and outputs an error flag signal.
Patent KR-20010004274-A (KR)
Inventor: KIM SU CHAN
IPC: H01L27/108
Filed: 1999-06-28
Abstract: PURPOSE: A method for manufacturing a semiconductor device is provided to completely insulate charge electrode electrodes from each other, by eliminating a micro bridge caused by a micro scratch. CONSTITUTION: An oxide layer pattern is formed on a semiconductor substrate having lower structures such as a word line, a bit line and an insulating layer. A polysilicon layer(33) is formed on the semiconductor substrate having the oxide layer pattern. The polysilicon layer is polished by a chemical mechanical polishing(CMP) process to form a cylindrical charge storage electrode of a capacitor, wherein the CMP process includes the first polishing process using polysilicon slurry and the second polishing process using oxide layer process.
Patent KR-20010009010-A (KR)
Inventor: SHIN SANG CHEOL
IPC: A23G3/00
Filed: 1999-07-06
Abstract: PURPOSE: A ginseng fried honey cake and a manufacturing method thereof are provided to give active ingredients of ginseng to a fried honey cake by soaking the cake in ginseng syrup. CONSTITUTION: A manufacturing method of a ginseng fried honey cake comprises the steps of: mixing 70-80% of flour or glutinous rice powder, 8-12% of soju, 4-7% of salt and 8-12% of a sweetener with 50-90ml/kg of water to knead, and making 1.0-2.0mm of plate-formed noodles; frying the dough at 100-110deg.C and frying again at 120-150deg.C; and soaking oil-and-honey pastry in ginseng syrup for 5-15 minutes, coating with sesame, jujube, pine nuts, cinnamon powder and cooking oil, and then cooling the pastry. The sweetener is oligosaccharides, sugar, honey or starch syrup.
Patent KR-19990073430-A (KR)
Title: 각도조절되는비
Filed: 1999-07-08
Abstract: 본 발명은 사용목적에 알맞게 각도조절되는 비에 관한 것이다. 
     종래에도 여러가지 종류의 청소용 비가 있기는 하였으나 강당, 교실, 거실, 침실 등의 사용목적에 따라 자루의 각도가 각각 차이가 있기 때문에 여러 가지 종류의 비를 마련해야하는 불편한 점이 있었던 것이다. 
     본 발명은 이상의 문제점을 해결하고자 발명한 것으로 이의 발명요지는 하부에 쇄자체 체결부(1"')가 있는 몸체(1)의 형상을 반달 형상으로 하여 이의 주연부 좌우측에는 안내턱(1')이 형성되어 있으되 일측 안내턱(1')에는 일정 간격으로 다수의 걸림홈(1")이 형성되며 중간부에는 개구부(2')가 있는 삼각호 형상의 공실(2)을 형성하되 이 개구부(2')를 통해 끼움된 작동간(3)의 하단부는 공실(2)의 하부에 형성된 힌지부(2")에서 축핀(5)에 의해 회동가능하게 설치되어 있고 작동간(3)의 상부인 손잡이부(3")가 있는 자루부(3')와의 사이에는 안내간(4)이 형성되어 있으되 이 안내간(4)의 저면에 형성된 안내홈(4')은 전기한 안내턱(1')에 안내되면서 각도 조절할 수 있게 하되 이의 일측단에는 걸림턱(4')을 형성하여 전기한 다수의 걸림홈(1")에 조절된 각도를 걸림시켜 고정할 수 있게한 것이다.