baber/WOPTO huggingface dataset:
Patent KR-20020086800-A (KR)
Title: Ice storage type air conditioner
Inventor: KWEON YOUNG SUN
IPC: F24F5/00
Filed: 2001-05-11
Abstract: PURPOSE: An ice storage type cooling system integrated with outdoor unit is provided to fill refrigerant at proper pressure when delivering a product. CONSTITUTION: An inside of a case(2a) of a thermal storage tank(2) is divided into an accumulator(4) and a machine room(5). A cooling pipe(11) is vertically installed in the accumulator for circulation of refrigerant. An upper plate(12) and a lower plate(13) are horizontally installed on an upper end and a middle end in the accumulator and having a plurality of insertion holes for the cooling pipe to be inserted thereto and a plurality of flowing holes for uniform flowing of coolant formed thereon. A distributing pipe(14) is formed on the upper end in the accumulator and branches from a coolant inlet(17) and has a plurality of distributing holes(15) distributing coolant at normal temperature circulated in an indoor unit(1) to be uniformly dispersed over the whole area of the accumulator. A discharge pipe(14a) is formed on a lower end in the accumulator and connected to a coolant outlet(18) and has a plurality of intake holes(15a) for uniformly taking in coolant at low temperature circulating in the accumulator. The machine room has a compressor(21), a condensing coil(22) and an expansion valve(23) installed therein in series to compress, condense and expand refrigerant circulated in the cooling pipe. A fan(24) is formed on an upper side of the machine room to speed up heat exchange of refrigerant.
Patent KR-20020090465-A (KR)
Title: Driving control method of switched reluctance motor for single sensor
Inventor: KIM SANG YEONG
IPC: H02P25/08
Filed: 2001-05-25
Abstract: PURPOSE: An operation control method of an SRM for driving a single sensor is provided to improve the stability of operation by using a single sensor having 6/4 or 12/8 pole ratio of a stator and a rotor. CONSTITUTION: A sensor signal is generated every mechanical angle, in order to detect the change of phase. Each phase is sequentially turned on at a rising-edge detection time of a first sensor signal. At a falling-edge detection time of a second sensor signal, each phase is sequentially turned off. Each phase is sequentially turned on at the lowest inductance point and turned off at the highest inductance point. Each phase is turned on at a point preceding a mechanical angle of 0 to 1 degree rather than at the lowest inductance point and turned off at a point preceding a mechanical angle of 0 to 2 degree rather than at the highest inductance point.
Patent KR-20020090485-A (KR)
Title: Bank protection structure which has a function of gushing a surge
Inventor: YANG WON HOI
IPC: E02B3/14
Filed: 2001-05-28
Abstract: PURPOSE: A revetment structure having a waving function is provided to function as a waterfront. CONSTITUTION: The revetment structure having a waving function comprises a concrete square frame(2), composed of right and left frames(2a,2b), formed on a revetment incline(1) and provided with a holding projection(3) to be assembled with a unit covering block(B), wherein the unit covering block(B) is formed by projecting wave-dissipating walls(10,10a) out to a lower end(11) in zigzags, and the unit covering block(B) contains an arc intrusion parts(12,12a), wave guide holes(13,13a) folded upward on the middle of each arc intrusion part(12,12a), and many wave-dissipating holes(14) formed horizontally to absorb waves.
Patent KR-20020090661-A (KR)
Title: Manufacturing method of beauty pack
Inventor: LEE YOUNG HWAN
IPC: A61Q19/00
Filed: 2001-05-29
Abstract: PURPOSE: A process of preparing a cosmetic pack using natural ores radiating far infrared rays and natural materials such as oyster shells, shellfish shells, etc. is provided. Whereby, the cosmetic pack is beneficial to a human body, generates no water pollution, and reduces manufacturing cost by reutilization of rice hulls, oyster shells, shellfish shells, etc.. CONSTITUTION: Loess containing sericite is ground with clean water in a ball mill. Rice hulls, elvan, jade, zeolite, oyster shells and shellfish shells are ground to a specified size, sintered to remove impurities such as fine irons, mercury, etc., reground with water in a wet ball mill and then mixed with the above loess and a chitosan solution dissolved in citric acid to produce a raw material for cosmetic pack containing 10 to 20% by weight of loess, 5 to 10% by weight of elvan, 5 to 10% by weight of jade, 5 to 15% by weight of zeolite, 10 to 20% by weight of sericite, 5 to 10% by weight of a chitosan solution and 3 to 5% by weight of each oyster shells, shellfish shells and a loess solution(jijangsu, Korean native name).
Patent KR-20020093259-A (KR)
Title: Vertical type reaction furnace for semiconductor device manufacture
Inventor: CHOI SEOK WON
IPC: H01L21/22
Filed: 2001-06-07
Abstract: PURPOSE: A vertical reaction furnace for fabricating a semiconductor device is provided to increase the number of wafers which can be simultaneously annealed, by fabricating a split-type reaction tube and a split-type heater. CONSTITUTION: A boat(12) is partially sawed to make the wafer(11) easily attached/detached, transferring in a horizontal direction. Several slots are vertically installed in the boat so that several wafers can be mounted. A split-type reaction tube(13) of a half-cylinder type is disposed on both sides of the boat. The split-type reaction tube transfers to the boat to surround the outside of the boat. A split-type heater(14) of a half-cylinder type is disposed in the outside of each reaction tube. The split-type heater horizontally transfers to surround the outer circumferential surface of the reaction tube.
Patent KR-20020093476-A (KR)
Title: guidepost for preventing dew from being formed
Inventor: KIM JIN YEONG
IPC: E01F9/00
Filed: 2001-06-09
Abstract: PURPOSE: A road sign plate for dew prevention is provided to come a sign plate in sight well by preventing from dewing and getting damp by difference in temperature. CONSTITUTION: The road sign plate for dew prevention comprises a polycarbonate plate layer(22), a super brightness sheet paper layer(26) laid on the whole surface of the polycarbonate plate layer(22) to be reflected, an ultra super brightness sheet paper layer(28) printed with place names and letters of a road to be adhered to the super brightness sheet paper layer(26), and an anti-fog coating layer(30) coated on the ultra super brightness sheet paper layer(28) for dew and moisture prevention.
Patent KR-20020094825-A (KR)
Title: A thin organic EL panel and its passivation method
Inventor: SUNG UN CHEOL
IPC: H05B33/04
Filed: 2001-06-13
Abstract: PURPOSE: A thin organic electroluminescence panel and passivation method therefor is provided to obtain a panel having a compact structure, while reducing manufacturing costs. CONSTITUTION: A thin organic electroluminescence panel comprises an organic electroluminescence panel having an organic electroluminescence element protruded from the upper surface of a substrate(50); an absorbent(55) attached to the protruded electroluminescence element; and an epoxy resin(54) encapsulating the absorbent and tightly contacting the peripheral area of the organic electroluminescence panel where the absorbent is attached. The epoxy resin and the absorbent tightly contact with each other at the organic electroluminescence panel, to thereby allow passivation of the panel. A passivation method for thin organic electroluminescence panel, comprises a first step of preparing a first chamber for receiving an organic electroluminescence panel; a second step of preparing a second chamber connected to the first chamber through a nozzle; a third step of feeding the organic electroluminescence panel to the first chamber; a fourth step of attaching the absorbent to the organic electroluminescence panel by the pressure difference between first and second chambers; a fifth step of depositing an encapsulating agent to the organic electroluminescence panel; and encapsulating the organic electroluminescence panel through a spin coating process.
Patent KR-20020096292-A (KR)
Title: Method for spark timing controlling of engine in vehicle
Inventor: LEE MYEONG GEUN
IPC: F02P5/04
Filed: 2001-06-19
Abstract: PURPOSE: An ignition time control method of an engine for a vehicle is provided to prevent sudden increase or decrease of engine rpm in braking and to stabilize rpm by correcting ignition time according to difference between target engine rpm and actual engine rpm. CONSTITUTION: The state of a brake switch is detected in satisfying the ignition time control condition in idling of an engine after stopping a vehicle(S100,S110,S120). The idle feedback control and the spark idle stabilization are forbidden according to the operation of the brake switch, and ignition time is controlled with correcting according to difference between the target engine rpm and the actual engine rpm during the predetermined time(S130,S140,S150,S160,S170). The idle feedback is controlled, and spark idling is stabilized in passing the predetermined time of ignition time correction. Sudden increase or decrease of rpm is prevented, and engine rpm is stabilized by correcting ignition time according to rpm difference.
Patent KR-20030000228-A (KR)
Title: Method of changing polish pad in chemical mechanical polish apparatus
Inventor: KWON GYEONG MAN
IPC: H01L21/304
Filed: 2001-06-22
Abstract: PURPOSE: A method for replacing a polishing pad of a chemical mechanical polishing(CMP) apparatus is provided to improve uniformity of a wafer, by changing a delta pressure value according to uniform regulations determined by how many times a wear ring is used after the polishing pad is replaced. CONSTITUTION: A timeworn polishing pad is eliminated from a polishing head. A new polishing pad is installed in the polishing head. A delta pressure which is a difference between the pressure of air sprayed from a wafer head on the wafer and the pressure of air sprayed from the polishing head on the wafer is changed by the following regulations. A test wafer is installed in the wafer head. A CMP capacity monitoring process is performed to measure thickness uniformity of the test wafer after a CMP process using the CMP apparatus is performed. The regulations are determined by how many times the wear ring installed in the polishing head is used. The delta pressure is 0 if the wear ring polishes 200 wafers or lower The delta pressure is from -0.1 to -0.05 if the wear ring polishes 201 wafers to 600 wafers. The delta pressure is from -0.2 to -0.1 if the wear ring polishes 601 wafers to 800 wafers.
Patent KR-20020096790-A (KR)
Title: Portable cycle Health machine
Inventor: OK SUNG IL
IPC: A63B22/08
Filed: 2001-06-19
Abstract: PURPOSE: A portable simple bicycle appliance is provided to enable a user to conveniently train the user's lower body in a state that the user is sitting on the appliance. CONSTITUTION: The portable exercise appliance of simple bicycle structure has an enough size to be received under a chair, and is provided with a loop(6) for allowing a user to hang the bicycle structure conveniently and improving the convenience of transportation thereof. Also, the portable exercise is installed on the bottom surface thereof with a rubber base in order to firmly and safely fix the appliance on the floor.
Patent KR-20020001600-A (KR)
Inventor: IWAMOTO ATSUSHI
IPC: C07C29/86
Filed: 2001-06-26
Abstract: PURPOSE: A method for preparing a polyol is provided, to obtain a high purity polyols in high production yield and to suppress the production of by-products comprising acetal compounds and aldol compounds. CONSTITUTION: A polyol is prepared by reacting an aliphatic aldehyde represented by the formula (i) with formaldehyde in the presence of a basic catalyst, wherein the method comprises the steps of removing water and the unreacted formaldehyde from a reaction mixture by distillation to concentrate it; extracting the polyol from the concentrated reaction mixture with an extracting agent; and washing the extract with water and separating the washed extract into an oil layer containing the polyol and an aqueous layer. In the formula (i), R1 and R2 are H or an aliphatic alkyl group of C1-C6. The extracting agent is a specific aliphatic aldehyde represented by the formula (ii), wherein R3 is H or an aliphatic alkyl group of C1-C2 and R4 is an aliphatic alkyl group of C1-C5. The extracting agent is recovered from the oil layer containing the polyol after adjusting the pH of the oil layer.
Patent KR-20030008457-A (KR)
Title: Apparatus and method for communicating integrated signals using carrier to noise ratio
Inventor: HWANG CHAN SU
IPC: H04L27/34
Filed: 2001-07-18
Abstract: PURPOSE: A signal mixing communication apparatus and method is provided to receive and transmit two different input signals having different transmission characteristics while having high spectrum efficiency and less outage probability. CONSTITUTION: A multiplexing part(30) selects one of two input signals from input terminal(IN1, IN2) in response to a select signal(S) from a feedback channel(14), or blocks the input signals in response to the select signal(S). The first encoder(32) encodes an output of the multiplexing part(30) in response to a signal(M) transferred via the feedback channel(14), and outputs an encoded result to a transmission channel(12). A channel(40) transfers an output of the encoder(32), and a mixer(42) mixes a signal transferred via the channel(40) with noise(N). The first channel estimation part(52) estimates a carrier-to-noise ratio(CNR) of a received signal, and outputs an estimated CNR to the first M determination part(54). The first M determination part(54) compares the estimated CNR with the first CNR threshold value to determine the select signal(S) and the value(M) according to a comparison result. The select signal(S) and the value(M) are transferred to the first signal transmission part(10A) via the feedback channel(14). The first decoder(50) of the first signal receiver part(16A) decodes the received signal in response to the value(M), and outputs a decoded value result to a demultiplexing part(56). The demultiplexing part(56) demultiplexes an output of the first decoder(50) in response to the select signal(S).
Patent KR-20020011924-A (KR)
Inventor: HORIGUCHI TADAHIKO
IPC: G11B5/55
Filed: 2001-08-03
Abstract: PURPOSE: A micro-actuator element corresponding to particles on the cutting plane is provided to prevent wrong operation and damage by restricting discharge of particles from the micro-actuator. CONSTITUTION: A cut surface is created by cutting in a micro-actuator element(2), and is processed to prevent discharge of particles generated by cutting. The micro-actuator element is composed of a laminated body, and piezoelectric ceramic substances and inner electrodes are laminated alternately in the laminated body. The laminated body has the cut surface. The micro-actuator elements are mounted on the location between a fastened base plate(3) and a support spring(5) for supporting a head(4). The micro-actuator elements and the portion of the base plate and the support spring close to the micro-actuator elements are coated collectively with coating film.
Patent KR-20030012729-A (KR)
Title: Bit rate changing method through change of codeword of compressed image bit stream
Inventor: CHO JAE MUN
IPC: G06T9/00
Filed: 2001-08-04
Abstract: PURPOSE: A method of converting the bit rate of a compressed video bit stream through codeword exchange is provided to convert the bit rate with a small amount of conversion loss. CONSTITUTION: An exchange codeword determination unit(304) selects a codeword that replaces the codeword of an input bit stream. A codeword exchange unit(306) exchanges the codeword of the input bit stream with the codeword selected by the exchange codeword determination unit. The exchange codeword determination unit selects the codeword having the shortest code length among candidate codewords that satisfy conditions that run lengths of two codewords before and after being subjected to exchange are identical to each other and the levels of the two codewords have a predetermined difference between them.
Patent KR-20020017968-A (KR)
Inventor: HOSHIKAWA IKUO
IPC: C22C38/60
Filed: 2001-08-16
Abstract: PURPOSE: A machine structure steel having stable and securable excellent chip disposability and mechanical properties even being free of Pb is provided. CONSTITUTION: A machine structure steel superior in chip disposability and mechanical properties which contains sulfide-type inclusions such that those particles of sulfide-type inclusions with major axes not shorter than 5 μm have an average aspect ratio not larger than 5.2 and which also contains coarse particles of sulfide-type inclusions such that the following relation is satisfied. a/b <= 0.25 where, 'a' denotes the number of particles of sulfide-type inclusions with major axes not shorter than 20 μm, and 'b' denotes the number of particles of sulfide-type inclusions with major axes not shorter than 5 μm. The machine structure steel exhibits good chip disposability and mechanical properties despite its freedom from lead.
Patent KR-20010088942-A (KR)
Inventor: KIM CHEOL SAENG
IPC: A61H23/04
Filed: 2001-08-17
Abstract: PURPOSE: An auxiliary apparatus for treating varicosity is provided to relieve the pain or the fatigue due to the varicosity, to allow a user to use the apparatus as he/she is walking, and to improve the convenience of wearing. CONSTITUTION: The auxiliary apparatus for treating the varicosity is installed in shoes. The auxiliary apparatus consists of an elastic mini pneumatic pump(7) to be constricted at the moment the heel contacts with the ground for walking to generate a pneumatic pressure, a hose for transmitting the generated pneumatic pressure to an air bag(3) as a pneumatic expanding part, and a check valve(8) as a pneumatic discharge part for discharging the air contained in the air bag when the air bag reachs an appropriate pressure.
Patent KR-20010099057-A (KR)
Title: 액체충전용기의 구조
Inventor: LEE JEONG MIN
IPC: B65D33/00
Filed: 2001-08-20
Abstract: (1)발명이 속한 기술분야 
     액체충전용기의 구조 
     (2)발명의 목적 
     국내실용신안공고91-5740호의 경우, 내용물을 빨아 먹거나 그 내용물을 다른 용기에 옮기는 것은 가능하였으나, 용기내의 내용물을 용이하게 배출하는 수단으로 형성된 배출대는 용기에 접착되는 강도가 약하여 유통시 용기에 충격을 가하면 배출대의 접착면 양단을 통하여 용기내의 내용물이 새어 나오는 폐단이 발생하였던 것이며, 본 발명은 상술한 문제점을 해결함을 그 목적으로 한다. 
     (3)발명의 구성 
     V형날개부(2)가 본체면(4)에 접합됨에 있어 V형날개부(2)의 상단부가 본체면(4)의 상단부에서 약간 이격되어 별이의 접합공간부(A)를 구성하고, 상기한 접합공간부(A)의 하방으로는 일정 크기의 접합공간부(B)를 각각 횡방향으로 구성한 것이다. 
     (4)발명의 효과 
     본 발명은 배출대의 접합부를 고려하여 V형날개부의 접철부가 단이진 격층부에 위치되어 형성된 바, 액체충전용기와 배출대 접합부 사이에 밀폐성이 현저하게 배가되는 특징이 있는 것이다.
Patent KR-20030020761-A (KR)
Title: Pulsator type washing machine having drying function
Inventor: CHOI MU YONG
IPC: D06F25/00
Filed: 2001-09-04
Abstract: PURPOSE: A pulsator type drying and washing machine is provided to dry clothing in an inner tub after washing the clothing and collect fuzzes generated by the drying of the clothing not to be introduced into the inner tub again. CONSTITUTION: A pulsator type drying and washing machine includes a circulation duct(20) connected between upper and lower parts of an outer tub(3) for circulating air, a blower fan(22) mounted to the circulation duct for circulating the air, a heater mounted to the circulation duct for heating the air flowing in the circulation duct, and a filter to be inserted to or withdrawn from a predetermined position of the circulation duct for collecting fuzzes of clothing in the drying operation.
Patent KR-20030021670-A (KR)
Title: Plastic case for protection of fruit growth
Inventor: CHOI MIN UK
IPC: A01G13/10
Filed: 2001-09-07
Abstract: PURPOSE: A plastic case which is made of plastic and comprises two hemispherical cases is provided to protect a fruit from the damage by hail, sunburn, birds, insects, etc., to prevent the lowering of the commercial value of the fruit and to give convenience in its use. CONSTITUTION: A plastic case(P) having a shape similar to a fruit comprises a left hemispherical case(1) and a right hemispherical case(2). Elastic flaps(1A,2A) are formed at the lower part of the plastic case to open and close it, and a stalk-passing part(5) is formed at the upper part thereof. A hole(7) for passing a binding loop is formed at the stalk-passing part, dozens of vent holes(8) are punched at the lower part thereof and an elastic body(9) is jointed on the internal surface thereof.
Patent KR-20010099187-A (KR)
Title: 이동통신 단말기의 과전압 차단 장치
Inventor: SEO JONG WON
IPC: H04B1/40
Filed: 2001-09-10
Abstract: 본 발명은 배터리 이외의 충전기, 핸드프리기, 데이터 통신 등의 외부 전원을 사용함으로써 유기되는 과전압 입력을 차단시키는 이동통신 단말기의 과전압 차단 장치에 관한 것으로, 
     본 발명의 특징은, 충전기, 핸드프리기 및 데이터 통신 등의 외부 전원을 입력시키는 전원입력수단; 상기 전원입력수단의 외부 전원 입력을 감지하여 기준 전압과 비교하는 전압비교수단; 상기 전압비교수단의 출력신호에 따라 변동되는 펄스 지연된 소정신호를 출력하는 펄스지연수단; 상기 펄스지연수단의 출력신호에 따라 상기 전원입력수단의 전원을 스위칭하며, 상기 펄스지연수단의 출력신호에 따라 상기 전원입력수단의 전원을 차단하는 스위칭수단; 및 상기 스위칭수단에서 스위칭된 출력신호에 따라 이동통신 단말기로 전원을 공급하는 단말기전원수단을 포함하는데 있다. 
     이와 같이, 본 발명은 이동통신 단말기에 유입되는 과전압 입력 자체를 미리 차단할 수 있게 하여 보다 안정적으로 과전압 입력으로부터 보호할 수 있으며, 과전압 보호회로 동작 후에 사용 부품을 교체해야 하는 불편함이 없기 때문에 보다 효율적으로 사용자의 편의성을 증대시킬 수 있는 이점이 있다.
Patent KR-20030027206-A (KR)
Inventor: KIM HYANG YUL
IPC: G02F1/133
Filed: 2001-09-14
Abstract: PURPOSE: A method for manufacturing a liquid crystal display device is provided to reduce defects in an alignment film, and reduce the time and costs required for manufacturing the liquid crystal display device. CONSTITUTION: Black matrix(120) is formed on a substrate(100) at regular intervals. A coloring layer(140) is formed at areas between black matrixes. A polymer is applied to the black matrix and the coloring layer. A half-tone mask is arranged on the applied polymer for transmitting light to expose the polymer. The polymer is developed to form a multi-functional layer(220) functioning as pillar spacers(180), an alignment film(200), and an overcoating film.
Patent KR-20010100080-A (KR)
Title: 건축용 트랩을 겸한 슬리브
Inventor: KIM JI TAE
Filed: 2001-09-17
Abstract: 본 발명은 건축용 배수 시설에 사용되는 트랩을 겸한 슬리브에 관한 것이다. 
     종래에는 트랩과 슬리브를 각각 분리 설치해야 하므로 시공상 번거로운 폐단이 있을 뿐만 아니라, 트랩은 이의 배수공과 악취 차단 물 고임실이 작아서 폐수 속에 혼합된 찌꺼기 등의 협잡물에 의해 배수공과 물 고임실이 쉽게 막힘 되어지기 때문에 뚜껑을 열고 하수를 배출관으로 바로 유출시키고 있는 관계로 비위생적인 폐단이 있었던 것이다. 그리고 슬리브는 지수 패킹이 없기 때문에 슬리브 콘크리트 타설 시 시멘트 액이 누출되어 콘크리트 층을 약화시키는 폐단이 있을 뿐만 아니라, 침출수 배수공이 없기 때문에 방수층과 타일층 사이의 모래층에서 생긴 침출수가 역류하여 벽면과 바닥면이 접하는 코너 부위에서 누수 현상이 생겨 벽면이나 바닥면을 손상시키는 폐단이 있었고, 또한 슬리브는 장기 사용되면 콘크리트 층과의 사이에 틈새가 생겨 이 사이로 누수된 물이 아래층으로 유출되어 아래층의 천장을 손상시키는 폐단이 있었던 것이다. 
     본 발명은 이상의 문제점을 해결하고자 발명한 것으로 이의 발명 요지는 슬리브와 트랩을 겸용되게 하되, 슬리브 몸체(1)의 중간부에는 요입홈(1-2)을 형성하여 지수 패킹(8)이 끼움되게 하고, 그 상부에 형성된 트랩 연결부(1-3)에는 트랩 몸체(5)의 나사부(5-2)가 나사 끼움도어 트랩의 높낮이를 조절되게 하고, 트랩 몸체(5)의 상부에는 요입홈(5-1)이 형성되고, 그 내측 상 주벽에는 원주상으로 다수의 배수공(5-3)이 형성되고, 그 하부에는 접시 형상의 물 고임실(5-4)이 형성되며,전기한 요입홈(5-1)에는 접시 형상으로 된 여과구(6)의 상주연에 형성된 걸림턱(6-1)이 걸림되게 하고, 여과구(6)의 내주연에 형성된 안치턱에는 여과판(7)이 안치되고, 그 저면에는 다수의 배수공(6-3)을 형성함으로서 여과판(7)이 배수공(7-1)으로 유입된 하수가 여과구(6)의 저면에 형성된 배수공(6-3)으로 배수된 후 물 고임실을 거쳐 트랩 몸체(5)의 주벽 상부측에 형성된 배수공(5-3)으로 배출되게 하였기 때문에 많은 양의 배수가 가능하고, 슬리브 몸체(1) 상주연에는 격벽(2)과 플렌지(2-1)를 개재하여 방수처리 마감부(2-2)와 타일층(3)과의 사이에 고임된 침출수의 배출공(2-3)을 형성하였기 때문에 방수층의 시공이 완벽함은 물론 침출수의 역류 현상을 방지할 수 있는 것이다.
Patent KR-20030028984-A (KR)
Title: Sinking privention device of ship
Inventor: LEE INN TAE
IPC: B63B43/14
Filed: 2001-10-05
Abstract: PURPOSE: A sinking preventive apparatus for a ship is provided to prevent sinking of the ship and accidents by floating the submerged portion of the ship with an air tube mounted at the side of the ship in an emergency. CONSTITUTION: A sinking preventive device of a ship is composed of plural submergence detecting units(100) mounted around the draft line of the ship to measure pressure of water around parts of the ship; plural submergence preventive units(200) attached to the ship around the draft line to float the part of the ship according to a buoyancy control signal; and a control unit(300) detecting the submerged state of the ship according to water pressure data from submergence detecting units, and operating the submergence preventive unit by outputting the buoyancy control signal. Sinking of the ship is prevented by reinforcing the buoyancy of the submerged portion in an emergency.