baber/WOPTO huggingface dataset:
Patent KR-20010084543-A (KR)
Title: Holding device of flexible printed circuit in hard disk drive
Inventor: JUNG JONG HUN
IPC: G11B33/12
Filed: 2000-02-26
Abstract: PURPOSE: A flexible printed circuit holding apparatus of a hard disk drive is provided to simplify an operation for fixing a flexible printed circuit to an actuator arm by being integrally provided with an actuator arm. CONSTITUTION: A flexible printed circuit holding apparatus is used in a hard disk drive having a flexible printed circuit for connecting between a printed circuit board and a head of an actuator arm(103a), and includes a printed circuit guide(14), a guide base(16) and a printed circuit holder(40). The printed circuit guide(14) is extended from a side of the actuator arm(103a). The guide base(14) is extended from the bottom of the printed circuit guide(14). The printed circuit holder(16) is projected upward from the guide base(16). The flexible printed circuit holding apparatus is integrally installed with the actuator arm(103a) via molding.
Patent KR-20010087699-A (KR)
Title: The cultivation method of Cordyceps sinensis et al. having a high concentration of gamma-aminobutyric acid
Inventor: CHOI WON GYU
IPC: A01G1/04
Filed: 2000-03-08
Abstract: PURPOSE: Provided is a cultivation method of vegetable worms with high gamma-aminobutyric acid content which treats by keto acid in germinating grains or beans and treats in an anaerobic way after germination so that it produces vegetable worms with high gamma-aminobutyric acid content. CONSTITUTION: The cultivation method of the vegetable worms with high gamma-aminobutyric acid content comprises the steps of: (i) germinating grains or beans as a culture source to obtain a germinated body; (ii) vaccinating culture liquid of the vegetable worms to a culture wherein the germinated body is mixed and sterilized; (iii) culturing at 25deg.C and 70(RH) in relative humidity for 2-3 weeks; (iv) inducing to germinate when spawn is rich; and then (v) generating a fruit body to finish the culture.
Patent KR-20010100246-A (KR)
Inventor: JI CHEONG IL
IPC: A23L23/00
Filed: 2000-03-27
Abstract: 본 발명은 야채와 차 원료를 이용한 발암 원인물질 억제용 소스 조성물에 관한 것으로서, 더욱 상세하게는 깻잎, 미나리, 적상추, 냉이, 쑥갓, 생강 또는 이들의 혼합물의 액즙 1 내지 10 중량, 및 계피, 결명자 또는 이들의 혼합물의 추출엑기스 1 내지 10 중량를 포함하는 본 발명에 따른 발암 원인물질 억제용 소스 조성물을 조리된 육류 및 생선과 함께 섭취하면, 조리된 육류 및 생선에 존재하는 발암 원인물질(돌연변이원)을 효율적으로 억제할 수 있다.
Patent KR-20010094348-A (KR)
Title: a waveform analysis method
Inventor: LEE CHEOL HO
IPC: G01R19/165
Filed: 2000-03-30
Abstract: PURPOSE: A method for analyzing a signal waveform is provided to measure an overshoot value and an undershoot value by analyzing efficiently a signal measuring data obtained from an oscilloscope. CONSTITUTION: A multitude of parameter is inputted(S10). A new clock signal is generated by using parameters, Strobe1 and Strobe2(S11). A variable k is increased as much as 1(S12). An intersection state of parameter data and Data_ref is checked(S13). A variable l is increased as much as 1(S14). An intersection point of a data signal and Data_ref, namely Data_Cross_Ref is decided by linear interpolation(S15). An intersection state of the clock signal and 0 or Data_ref is checked(S16). A variable m is increased as much as 1 if the intersection state is confirmed(S17). An intersection point of the clock signal and 0, namely CLK_Cross_0(m) is decided by linear interpolation(S18). An intersection state of CLK_cross_0 and Data_Cross_Ref(1) is checked(S19). A variable j is increased as much as 1 if the intersection state is confirmed(S20). A value of Setup(j) is obtained.
Patent KR-20010094315-A (KR)
Title: an antenna system of radar dome
Inventor: SONG GYEONG SIK
IPC: H01Q1/34
Filed: 2000-04-06
Abstract: PURPOSE: An antenna apparatus for marine radar is provided, in which metallic wave reflector plate is attached to the interior of antenna cover, to thereby effectively reduce false image generated by a side lobe of the beam received by the antenna and detect small targets adjacent to the ship in an effective manner. CONSTITUTION: A dome-shaped antenna apparatus comprises an antenna(12) having a plurality of metallic patches(12a) arranged within a case(10) coupled with a cover(11); a rotation shaft(13) rotating by a speed reduction unit(14) for receiving driving force of motor; a receiving front end(15) for receiving radio wave; magnetron devices for generating electromagnetic wave; and a metallic reflector plate(20) attached to the upper portion of interior of the cover, and which shields electromagnetic wave and minimize occurrence of side lobe. The metallic reflector plate is attached to the cover by a screw(21a) which surface-contacts and penetrates through a support member(21) protruded downward from the cover.
Patent KR-20000071673-A (KR)
Inventor: KIM YEONG HUI
IPC: A61P25/28
Filed: 2000-04-12
Abstract: PURPOSE: A composition containing hydroxycinnamic acid derivatives or Angelicae gigantis Radix extract comprising same is provided, which is used for preventing and treating the dementia, and which can be prepared in the form of pharmaceutical compositions or food. CONSTITUTION: A process for the preparation of Angelica gigantis Radix extract comprises of: adding 80% methanol to Angelica gigantis Radix(Angelica gigas Nakai, Angelica acutiloba Kitagawa, Angelica sinensis Diels), and extracting at 40°C for 2hrs in water bath(repeating this step for 2times); collecting the extracts, evaporating moisture from methanol using a decompressed-circulating refrigerating pipe, and drying using a decompressed-dryer to get Angelica gigantis Radix extract. The Angelica gigantis Radix extract contains decursinol and ferulic acid(a kind of hydroxycinnamic acid derivatives) in the content of 0.5wt.% and 0.07wt.% each. A dementia-preventing and treating composition containing hydroxycinnamic acid derivatives can be prepared by mixing Angelica gigantis Radix extract, milk calcium, fine-crystallized cellulose, isoflavone, ginkgo leaves extract, vitamin B1, B2, D3, and filling up to a gelatin capsule.
Patent KR-20000050105-A (KR)
Inventor: LEE SANG YOON
IPC: C03B19/08
Filed: 2000-05-16
Abstract: PURPOSE: A process for preparing a foamed glass by heat foaming porous silica gel in a specified shape is provided which gives homogeneous foamed glass having excellent insulating property at a low cost. CONSTITUTION: A process comprises pouring porous silica gel as a foaming agent in a mold, which is prepared using a sol-gel method and calcining at 980 to 1,170°C in a predetermined shape in a tunnel kiln or shuttle kiln to foamed glass having excellent physical properties such as homogeneity and heat insulation. The silica gel is manufactured by treating alkali silicate obtained from the melting of silica dioxide and alkali. The obtained foamed glass comprises pure silica of above 98% and has a large number of fine pores inside particles such that it generates almost no environmental pollution and has excellent insulating property.
Patent KR-20010105732-A (KR)
Title: Metal Frame Assembly for IC card and method for manufacturing the same
Inventor: KIM YEONG JUN
IPC: H01L25/00
Filed: 2000-05-17
Abstract: A method of manufacturing a compound sanitary napkin (20) comprising a primary absorbent member (30) and a secondary absorbent member (50) is provided. The primary absorbent member (30) comprises a primary absorbent element (34) and a fluid pervious cover superimposed on the primary absorbent element (34). The secondary absorbent member (50) comprises a fluid pervious body-facing sheet, a fluid impervious garment-facing sheet joined to the fluid pervious body-facing sheet and a secondary absorbent element (56) positioned between the fluid pervious body-facing sheet and the fluid impervious garment-facing sheet. The method comprises the steps of: wrapping a discrete primary absorbent element (34) by a continuous fluid pervious cover web to make a continuous primary absorbent member web, the discrete primary absorbent element (34) arranged to provide a first predetermined interval, forwarding the continuous primary absorbent member web toward a combining section, feeding a continuous fluid pervious body-facing sheet web, a continuous fluid impervious garment- facing sheet web and a discret secondary absorbent element (56) toward the combining section, the discrete secondary absorbent element (56) arranged to provide a second predetermined interval, such that the discret secondary absorbent element (56) superposes the discrete primary absorbent element (34) and such that at least a portion of each of the first and the second predetermined intervals is overlapping, combining the continuous primary absorbent member web and the continuous fluid pervious body-facing sheet web to make a continuous composite web, and cutting the continuous composite web into the discret compound sanitary napkin (20).
Patent KR-20010108726-A (KR)
Inventor: KIM HYEONG SU
Filed: 2000-05-31
Abstract: CMOS/CCD용 광학계에 관해 개시되어 있다. 본 발명은 동일한 광축 상에 제1 내지 제4 렌즈로 구성되는 CMOS/CCD용 광학계에 있어서, 상기 제1 내지 제4 렌즈 중 선택된 어느 하나의 렌즈의 한 면은 곡률 반경이 무한대이면서 그 전면에 적외선 차단 막이 코팅되어 있는 것을 특징으로 하는 CMOS/CCD용 광학계를 제공하고, 동일한 광축을 갖는 제1 내지 제4 굴절 렌즈와 적외선 차단을 위한 광학적 수단으로 구성된 것을 특징으로 하는 CMOS/CCD용 광학계를 제공한다. 특히, 상기 제3 렌즈의 경우, 양면의 곡률반경의 차이 값이 기존의 것에 비해 상대적으로 커서 렌즈 가공 공정과 조립 공정이 용이하며 상기 적외선 차단 막이 평면 상태로 구비되어 있어 상기 막에 입사하는 평행 입사광은 모두 동일한 입사각을 갖게 되므로 영상의중심부와 주변부의 칼라 특성의 상이함에 따른 화질 저하를 방지할 수 있고, 칼라 영상이 정상적으로 재현되지 않는 문제점을 해소할 수 있다.
Patent KR-20010111520-A (KR)
Inventor: PARK JAE YONG
IPC: H01L51/50
Filed: 2000-06-12
Abstract: 본 발명은 박형의 유기발광소자를 제작할 수 있는 동시에 유기발광소자패널의 테두리에 형성되는 불필요한 프레임을 최소화 할 수 있는 유기발광소자에 관한 것이다. 
     본 발명은 표시면과 비표시면을 가지는 표시패널과 상기 표시패널의 게이트라인과 데이타라인에 구동신호를 공급하기 위한 구동회로보드를 구비하는 유기발광소자에 있어서, 상기 표시패널의 비표시면 상에 상기 구동회로보드가 접철된 상태에서 상기 구동회로보드와 상기 표시패널 사이에 평면상태로 접속되는 테이프 캐리어 패키지를 구비한다. 
     본 발명에 따른 유기발광소자는 박형의 유기발광소자를 제작할 수 있는 동시에 유기발광소자패널의 테두리에 형성되는 불필요한 프레임을 최소화 할 수 있다
Patent KR-20010113061-A (KR)
Inventor: LEE SEOK JIN
IPC: F04B39/00
Filed: 2000-06-16
Abstract: 본 발명은 밀폐형 왕복동식 압축기의 토출 밸브 장치에 관한 것으로, 더 상세하게는 피스톤의 직선 왕복 운동에 의해 실린더 내부에서 압축된 냉매가 소정의 압력을 통해 토출 밸브리드를 밀면서 실린더 헤드의 토출실로 토출될 때 불안전하게 작동하는 토출 밸브리드와 밸브리드 스프링의 구조를 개선하여 밸브 플레이트의 파손 및 마모를 방지하고, 이상소음이 발생되는 것을 최소화할 수 있도록 된 밀폐형 왕복동식 압축기의 토출 밸브 장치에 관한 것이다. 
     본 발명의 목적은 실린더 내부에 압축된 냉매가스를 토출시키는 토출 밸브리드(30)와 상기 토출밸브를 지지하는 밸브리드 스프링(40)에 상ㆍ하 방향 뿐만 아니라 좌ㆍ우 측면에도 소정의 탄성력을 지닌 제1ㆍ2탄성고정부(310,410)을 마련하여 토출 밸브리드(30)와 밸브리드 스프링(40)의 좌ㆍ우 측면의 흔들림으로 인한 밸브 플레이트(20)의 밸브 조립좌(23)면과 토출 밸브리드(30)와 밸브리드 스프링(40)의 접촉에 의한 마모와 파손을 방지하며, 밸브의 신뢰성을 높이고, 압축기의 이상소음을 방지하는 토출 밸브 장치를 제공함에 있다. 
     상기한 목적을 달성하기 위한 본 발명의 구성은 실린더의 압축실에서 압축된 냉매를 토출실로 내보내는 밀폐형 왕복동식 압축기의 토출 밸브장치에 있어서, 토출 밸브리드 헤드부(320)의 타단에 탄성력을 유지하는 제1탄성고정부(310)를 구비하여 토출구(220) 개폐시 흔들림을 방지하고 상기 토출구를 개폐하는 토출 밸브리드(300)와, 밸브 플레이트(200)의 밸브 조립좌(230)와 접촉되는 밸브리드스프링(400)의 일단에 탄성력을 유지하는 제2탄성고정부(410)를 구비하여 상기 토출구 개폐시 흔들림을 방지하고 상기 토출 밸브리드의 열림량을 제어하는 밸브리드 스프링(400)과, 상기 토출 밸브리드와 상기 밸브리드 스프링을 고정하기 위한 밸브고정 스프링(500)을 순차적으로 상기 밸브 플레이트에 형성된 상기 밸브 조립좌에 안착되어 구성되는 것을 특징으로 한다.
Patent KR-20020003408-A (KR)
Title: Method cleaning Liquid Chrystal Display using Laser
Inventor: CHOI SEUNG RAK
IPC: G02F1/13
Filed: 2000-06-21
Abstract: PURPOSE: An LCD cleaning method using laser is provided, which performs cleaning process without using D.I water and chemicals, to reduce cost and to prevent environmental contamination. CONSTITUTION: An LCD is automatically transferred to a cleaning space. Laser is irradiated on the transferred LCD to separate contaminants adhered to the LCD. An inert gas is sprayed to the contaminants to discharge the contaminant to the outside. KrF Excimer laser or ArF Excimer laser is used for cleaning.
Patent KR-20020001069-A (KR)
Title: Apparatus for charging in a mobile communication terminal
Inventor: KIM CHAN GYU
IPC: H04B1/40
Filed: 2000-06-24
Abstract: PURPOSE: A charging apparatus in a mobile station is provided to charge the battery with external power supplied to an AC-DC adapter, without using a charger, by installing a charging unit inside of a mobile station. CONSTITUTION: A charging apparatus in a mobile station is composed of a rectifier(10), a resistor(R), a battery(20), a comparator(30), an A/D converter(40), a CPU(50), an alarm generation part(60), and a timer(70). The rectifier(10) removes the ripples of DC power supplied through a DC-DC adapter. The resistor(R) detects the voltage supplied through the rectifier(10). The battery(20) charges or discharges the ripple-removed DC voltage. The comparator(30) compares the DC voltage(V1) supplied through the rectifier(10) with the discharging voltage of the battery(20) and outputs a difference voltage. The A/D converter(40) converts the analog signal outputted from the comparator(30) into a digital signal. The CPU(50) analyzes the digital signal outputted from the A/D converter(40). As a result, if the digital signal indicates a value of "0", the CPU(50) outputs an alarm generation control signal to generate an alarm to indicate that charging has been completed. Also the CPU(50) generates a timer driving signal for charging. The alarm generation part(60) generates an alarm according to the alarm generation control signal. Based on the timer driving signal, the timer(70) executes counting during a preset counter value and transfers the counted value to the CPU(50).
Patent KR-20000058696-A (KR)
Inventor: AN JUNG O
IPC: A23B7/14
Filed: 2000-06-24
Abstract: PURPOSE: A preparation method of functional kimchi using gold & silver is provided to inhibit the growth of septic bacteria, thereby prolonging storage period. CONSTITUTION: In cultivating cabbage, an effective amount of germanium & selenium solution is sprayed into soil, and in tank farming, 2% of germanium & selenium solution is used. In addition, gold is electrolyzed in distilled water to prepare 3 ppm of gold solution and 2% of the gold solution is added in seasoning cabbage. And then, silver is electrolyzed in distilled water to prepare 10 ppm of silver solution, and sprayed onto the seasoned cabbage.
Patent KR-20020003719-A (KR)
Title: A Mineral health beverage which in made from mudyellow-water and manufacturing method thereof
Inventor: PARK KI MOON
IPC: A23L2/38
Filed: 2000-06-30
Abstract: PURPOSE: Provided are a mineral-containing functional beverage made from loess-water and its manufacturing method, thereby relieving zinc deficiency and consequently improving the absorption of vitamin A and vitamin E in a body. CONSTITUTION: The manufacturing method comprises the steps of: drying loess in the sun then powdering it; dispersing 3.47-4.24 wt.% of loess powder in 95.76-96.53 wt.% of water in a stainless steel distiller(1) having a two step condensor of distilled water(4); then heating and distilling it to obtain zinc-containing distilled water.
Patent KR-20000058884-A (KR)
Inventor: LEE JIN SAM
IPC: G06F17/00
Filed: 2000-07-04
Abstract: PURPOSE: A school class home page network is provided for enhancing an internet study by building-up a class-based home page and providing a communication room between teachers, student parents and students. CONSTITUTION: A plurality of personal computers(10¯30) and a mobile(70) are connected with an internet network(40). A web server(50) connected with the internet network(40). A certain user is connected with the web server(50) using a communication network such as Chollian, Hitel, etc., an internet network, and a mobile internet line through a mobile internet line. When the user is connected with the web server(50), the user sees a banner advertisement and a certain advertisement(80) displayed on a new window. The user inputs the ID based on a guide and instruction of the web server(50) and the controller(51) and logs in the system, so that the user uses a charged service such as various electronic transaction, auction, and online tutor service.
Patent KR-20000063398-A (KR)
Inventor: SHIN HYUN KWAN
IPC: E02D5/04
Filed: 2000-07-05
Abstract: PURPOSE: A steel pipe pile and steel sheet pile corrosion proofing method using a magnet is provided to reduce the term of work and construction cost by protecting the non water-soluble ceramic paint using a magnet. CONSTITUTION: A steel pipe pile and steel sheet pile corrosion proofing method using a magnet comprises the steps of; treating the corroded surface of a steel pipe pile and a steel sheet pile(10); covering the non water-soluble ceramic paint(20) for underwater bonding to the surface; bonding a mold release agent(30) on the paint; and on the mold release agent, bonding a FRP protecting cover(40) in which a magnet is installed by a magnetic force of magnet.
Patent KR-20020008464-A (KR)
Title: Shoes Assembly
Inventor: CHO MYEONG EON
IPC: A43B13/20
Filed: 2000-07-20
Abstract: PURPOSE: A structure for shoes is provided to always keep the interior space of the shoes in a pleasant condition by making the interior air be circulated in the shoes during walking. CONSTITUTION: The structure for shoes consists of an outer sole(10) formed with an air discharge hole(14), plural air passages(15) communicated with the air discharge hole, and plural lower ventilation holes(19) communicated with the air passages; a midsole(11) having plural upper ventilation holes(18) drilled at desired positions corresponding to the lower ventilation holes; an outer leather shell(13) for receiving a foot of a user; and a pumping device(12) mounted between the midsole and the outer sole for making the interior air be discharged and entered to and from outside through the air passages via the expansion/constriction action thereof during the walking.
Patent KR-20000072193-A (KR)
Inventor: SONG DEOK SOO
IPC: H01J61/12
Filed: 2000-08-16
Abstract: PURPOSE: A discharge lamp having main and auxiliary light-emitting tubes is provided in which only the main light-emitting tube is turned on when it normally operates but the auxiliary light-emitting tube is turned on when the main light-emitting tube cannot be turned on due to its trouble. CONSTITUTION: A discharge lamp is constructed in such a manner that two supports(20A,20B) are connected to a power supply, being set inside a glass sphere into which a gas such as halogen is inserted, being sealed, and two light-emitting tubes are respectively fixed to the supports. A lead for supplying power of a main light-emitting tube(10A) of the two tubes is connected adjacent to the power supply and a power supplying lead of an auxiliary light-emitting tube(10B) of the two tubes is connected, being distant from the power supply.
Patent KR-20020015406-A (KR)
Title: Nanocomposite Material Comprising Crystalline Polystyrene And Organophilic Clay and Method for Preparing Thereof
Inventor: KIM HYEON JUN
IPC: C08K3/34
Filed: 2000-08-22
Abstract: PURPOSE: Provided are nano composite material containing crystalline polystyrene-organic mud and its preparation method. In the nano composite material, organic mud layer is dispersed as inserted or detached structure in nano scale in the crystalline polystyrene, so that the material has excellent mechanical properties such as bending strength and tensile strength. CONSTITUTION: The composite material comprises: making a composite material by introducing amorphous styrene polymer and organic clay in a weight ratio of 1:1-20:1 into a batch mixer or an extruder and melt-mixing at the higher temperature than the transition temperature of the above amorphous styrene polymer; and melt mixing the above composite material and the crystalline polystyrene in a weight ratio of 1:1-20:1 at the higher temperature than the melting temperature(250deg.C) of the above crystalline polystyrene. The composite material is also made by melt mixing crystalline polystyrene, 5-30wt.% of amorphous styrene polymer and 1-30wt.% of organic clay at the higher temperature than the melting temperature of the above crystalline polystyrene in a batch mixer or in an extruder. The above crystalline polystyrene is styrene-based polymer with tacticity and is selected from isotactic polystyrene and syndiotactic polystyrene-based polymers and copolymers. The above amorphous styrene polymer is selected from atactic polystyrene or styrene-based block copolymers which has compatibility with the above crystalline polystyrene and builds the inserted or separated structure with the above organic clay. The above organic clay is a silicate salt of minerals substituted by alkylammonium or alkylphosphonium ion wherein it has 2:1 layer structure and is selected from montmorillonite, hectorite and saponite.
Patent KR-20020016052-A (KR)
Title: New method for the manufacture of amorphous cefuroxime axetil
Inventor: AHN CHAN YONG
IPC: C07D501/04
Filed: 2000-08-24
Abstract: PURPOSE: Provided is a method for manufacturing amorphous cefuroxime axetil, (1-acethoxyethyl-(6R,7R)-3-carbamoyloxymethyl-7-((Z)-2-(fur-2-yl)2-methoxyiminoacetamido)cef-3-em-4-carboxylate), in high yield and purity by solvent precipitation without crystallization. CONSTITUTION: The amorphous cefuroxime axetil is manufactured by reacting cefuroxime sodium with (R,S)-1-acethoxyethylbromide under crown ether catalyst; dissolving residues of reaction products in aqueous organic solvent characteristically acetic acid; then adding chilled purified water of 0-4 deg.C thereto.
Patent KR-20000072345-A (KR)
Inventor: KANG HYE YOUNG
IPC: A47C7/02
Filed: 2000-08-30
Abstract: PURPOSE: A seat structure with a backrest is provided to smooth a metabolism by being coated with a material radiating remote infrared energy. CONSTITUTION: A backrest(10) and a seat(12) are coated with a first complex material layer(20) on the surfaces to continuously radiate remote infrared energy. A case(60) is fixed to the bottom of the seat by many combining screws(70) and a second complex material layer(50) is put in the case. The seat radiates medicinal elements through many holes(12a) formed on the center of the seat in a steam fomentation method. Therefore, the seat makes the metabolism in a human body smooth and naturally.
Patent KR-20020017397-A (KR)
Title: High-pressure supply pump
Inventor: JANG UK HUI
IPC: F02M59/06
Filed: 2000-08-30
Abstract: PURPOSE: A high pressure supply pump is provided to secure the durability and wear resistance of a cam and a bush by applying a lubricating oil instead of a fuel and to reduce the driving torque by improving lubricating efficiency. CONSTITUTION: An oil drain hole(d) for returning the fuel leaking through a gap between a barrel(6) and a plunger(7) and a stem chamber for restraining the leaked fuel from flowing into a housing(1) are installed on the end of the barrel. A return line(22) connected to a globe(e) on the inner face of the housing is installed to collect and return the leaked fuel. A lubricating oil inlet(20) and a lubricating oil outlet(21) are installed to circulate a lubricating oil through the inside of the housing. Therefore, a fuel is isolated from the lubricating oil.
Patent KR-20020018209-A (KR)
Title: Structure of an air cleaner for a vihicle
Inventor: CHO CHEONG YONG
IPC: F02M35/02
Filed: 2000-09-01
Abstract: PURPOSE: Air cleaner structure of a vehicle is provided to improve performance of an air cleaner and efficiency, and to prevent breakage of an air cleaner by installing a porous cotton yarn net having plural vents in the lower case of the air cleaner. CONSTITUTION: An inlet(20) is connected to the side of a lower case(14) of an air cleaner(26) to flow air from an air duct, and hinges(11-a,11-b) are formed in the lower part of the lower case. A porous cotton net(16) is combined and supported between hinges. An element(18) is mounted in the upper part of the lower case, and a cover(12) having an outlet(10) is formed. Dust and foreign matters are eliminated from air with the element in moving air from the inlet, and clean air is discharged through the outlet. Air between an engine room and the air cleaner is circulated through the porous cotton net, and noise and vibration are reduced with increasing the volume of the air cleaner. Breakage of the air cleaner is prevented with discharging high pressure exhaust gas through pores of the cotton net at misfire.