baber/WOPTO huggingface dataset:
Patent KR-20020039491-A (KR)
Title: Multitelephone
Inventor: JANG NAN OK
IPC: H04L12/66
Filed: 2000-11-21
Abstract: PURPOSE: A multi-functional telephone is provided to transmit/receive a voice and image signal smoothly and at low cost using the Internet and a PSTN(Public Switched Telephone Network) by controlling a voice and image signal being transmitted/received effectively using a computer, controlling a peripheral device, the computer, and an interface, and adding many functions capable of being supported by a software. CONSTITUTION: A telephone(100) is mounted in an exterior type, connected to a PSTN, and includes a line interface(110), a speech network(111), an MCU(130) for controlling an audio signal, a CID signal, a ring signal, and a dial signal, a USB controller(180) having a PCM CODEC(coder/decoder) integrally, and an LCD unit(160) for displaying a CID, an E-mail, and a URL. A computer(200) is connected to the USB controller(180) of the telephone(100), supplies a power source, has an automatic P and P recognition function capable of automatically recognizing the USB controller(180), includes a hard disk, a memory(RAM, ROM), a LAN card, and a modem, and controls the elements using an application software.
Patent KR-20020040940-A (KR)
Inventor: JU GYEONG HUI
IPC: H01M10/0525
Filed: 2000-11-25
Abstract: PURPOSE: Provided is an inorganic solid electrolyte used for a lithium secondary battery or a thin film lithium secondary battery, which can improve ionic conductivity, charge/discharge velocity, and cycle lifetime. CONSTITUTION: The inorganic solid electrolyte represented by the formula aM-bSeO2-cN-dQ contains 4.8-48mol% of at least one material, as a network former, selected from the group consisting of B2O3, P2O5, TeO2, SiO2, and LiPO3, 4.8-40mol% of SeO2, 24-60mol% of at least one material, as a network modifier, selected from Li2O and Li2S, and 0-40mol% of at least one material, as a lithium salt, selected from the group consisting of LiI, Li3PO4, Li2SO4, LiCl, Li2Se, LiF, LiBr, wherein M is the network modifier, N is the network former, Q is the lithium salt, and a, b, c, and d have the molar ratio of 0.24<=a<=0.6, 0.048<=b<=0.4, 0.048<=c<=0.48, 0<=d<=0.4.
Patent KR-20020043681-A (KR)
Title: Paper thimble automatic inserting device for preventing end mark of coil type strip
Inventor: HONG SEONG UN
IPC: B21C47/06
Filed: 2000-12-02
Abstract: PURPOSE: An apparatus for automatically attaching a paper thimble for preventing end marks of a coil type cold strip is provided to substantially improve working efficiency and productivity by automatically attaching the paper thimble suppressing generation of end marks due to thickness difference of the strip. CONSTITUTION: The apparatus for automatically attaching a paper thimble for preventing end marks of a coil type cold strip comprises a support plate(109) that is installed at the upper side of a magnet table on which the strip is proceeded with the support plate(109) being parallel to and spaced apart from the magnet table in a certain distance; a vacuum pad(101) which is installed on the lower surface of one side of the support plate(109) so that the vacuum pad(101) is tilted by an air cylinder(106); a vacuum pad(102) elastically installed with being spaced apart from the vacuum pad(101) in a certain distance; a roller table(103) which is arranged on the same line as the vacuum pad(102) so that they are not interfered with each other, and which is ascended or descended by a plurality of air cylinders(107); a guide roll(104) which is adjacently installed to the roller table(103) to guide the proceeding strip, and which is ascended or descended by an air cylinder(108); an approach sensor(105) which is installed at the outer side of the vacuum pad(101) to sense the front of the strip; and air cylinders(110,111) which are fixed to one side end of the support plate(109) to ascend or descend and rotationally drive the support plate(109).
Patent KR-20010062331-A (KR)
Title: Electric connector housing
Inventor: HARPER DONALD K JR
IPC: H01R12/51
Filed: 2000-12-12
Abstract: PURPOSE: To obtain an electric connector housing by which the influence of thermal expansion coefficient of a connector and a circuit plate positioned beneath the connector are reduced. CONSTITUTION: A connector housing assembles an adaptation section that corresponds to the region where the greatest deformation is expected to a circuit board. At the most far-off position (that is, circumference of the corner) from the neutral point(NP) of connector, the housing has notches or slots. By means of this array, the stress increase is avoided so that the distortion and torsion of the housing is made minimum.
Patent KR-20020047346-A (KR)
Inventor: KIM SEUNG IL
IPC: F02F5/00
Filed: 2000-12-13
Abstract: PURPOSE: A shape of a ring gap is changed to block combustion gas leaked from the ring gap, to prevent abnormal temperature rising of a piston and cylinder liner. CONSTITUTION: A piston ring(30) has two circular ring(31, 33). A ring gap(32, 34) formed in the circular ring are connected with a connection portion(35). The ring gaps are crossed each other connecting by the connecting portion, thereby reducing leakage of combustion gas.
Patent KR-20020047449-A (KR)
Title: Method for controlling an etching process of semiconductor
Inventor: CHO BO YEON
IPC: H01L21/306
Filed: 2000-12-13
Abstract: PURPOSE: A controlling method of an etching is provided to improve a through-put due to an increase of an operating rate from reduction of frequent cleaning processes of a processing chamber by efficiently preventing a particle generation in the processing chamber. CONSTITUTION: A controlling method of an etching comprises a first step for supplying a pressure, a gas and an ESC(ElectroStatic Chuck techniques) voltage in a processing chamber, a second step for providing an RF(Radio Frequency) power and a backside helium gas in the processing chamber, a third step for etching a layer formed on a wafer, a fourth step for cutting off the backside helium gas and the ESC voltage just right before ending the etching step, and a last step for pumping the remaining helium gas in order to completely remove the helium gas from the processing chamber.
Patent KR-20020049672-A (KR)
Title: Removeing Device For Steel Sleeve
Inventor: LEE JUNG WON
IPC: B21B41/00
Filed: 2000-12-20
Abstract: PURPOSE: An auto carrier for steel sleeve is provided to improve working efficiency and to prevent safety accident and to reduce transportation cost by stably and quickly carrying steel sleeve to a desired working position. CONSTITUTION: An auto carrier for steel sleeve comprises a body(100), a gripper crossing portion(200), and a net crossing portion(300). The body includes a motor(10), a driving roll(11) and front wheel roll(12) driven by the driving roll. The gripper crossing portion includes a chain(20), a chain hook(27) connected between a gripper base(25) and a head base(26), a head clamp(22), a limit switch(29), a limit sensor(22a,22b), and an open limit sensor(26a) and gripper down sensor(26b). The net crossing portion includes a driving motor, a driving portion that is composed of an internal screw and external screw, a net crossing sensor and net open sensor installed to the net base, and a net bucket(33) coupled with end portion of the net frame to cover the steel sleeve.
Patent KR-20020050373-A (KR)
Title: Method for providing and generating a link menu through mobile telecommunication network
Inventor: AHN YONG HYEON
IPC: H04B7/26
Filed: 2000-12-21
Abstract: PURPOSE: A method for providing and creating a link menu through a mobile network is provided to offer link service to connect MP servers and IP server with mobile terminals and to transmit/provide the address information of a specific server and identification information, such as a site name operated by the server, to a mobile terminal so that the mobile terminal can register and create an icon or a hyper-link text type link menu. CONSTITUTION: A mobile network(100) is comprised of a plurality of MP servers(211-21k) and a link server(20). The MP servers(211-21k), connected with a plurality of mobile terminals(101-10n), provides various kinds of information. The link server(20) provides link service to connect the MP servers(211-21k) with the mobile terminals(101-10n). Also the link server(20) transmits/provides the address information of a specific MP server and identification information, such as a site name operated by the server, to a mobile terminal so that the mobile terminal can easily select and appoint the connection with the specific server through the LCD. The link server(20) also provides link service with a plurality of Internet servers(311-31m) that provide various kinds of information through the Internet(200).
Patent KR-20020050969-A (KR)
Title: material interval control apparatus
Inventor: LEE SANG HUN
IPC: F27D3/12
Filed: 2000-12-22
Abstract: PURPOSE: A material distance control apparatus is provided which freely controls a distance between materials charged into a heating furnace, that is, freely controls a working beam stroke according to characteristics of each materials. CONSTITUTION: The material distance control apparatus comprises a connection base(12) adhered onto the upper part of a working beam back and forth moving frame(26) and a beam(5); a second connection arm(17) at both sides of which two clasps are formed to maintain the beam(5) to a certain height; a first connection arm(16) one side of which has a catch hole, and the other side of which is connected to the connection base(12) by an arm pin(13); a pair of rolls(4) fixing the beam(5) from up and down; a roll box(3) which is fixed to the roll, and in which a roll fixing part is assembled with a bearing, a beam(5) fixed to the working beam back and forth moving frame(26); a rack(6) attached to the side surface of the beam(5) to rotate a gear(7); a bearing housing(8) attached to a plate to fix the gear; a housing hole(9) smoothing the operation of the beam; a gear(7) fixed by the housing(8) and engaged with the rack(6) so that the gear is rotated as the rack is being moved forward; a sensing plate(10) connected to a shaft of the gear and having a plurality of sensing holes; sensing holes(18) a plurality of which are perforated on the sensing plate(10); a sensing sensor(11) checking the number of revolutions using light; a plate(2) to which the roll box and the bearing housing are fixed, and which is connected to a lower base; a base(1) fixing the control apparatus to the ground; a selection switch controlling the control apparatus; and a stroke setting switch selecting a stroke distance of the working beam through the selection switch.
Patent KR-20020053578-A (KR)
Title: backlight unit of liquid crystal display module
Inventor: LEE SANG JIK
IPC: G02F1/1335
Filed: 2000-12-27
Abstract: PURPOSE: A back light unit of a liquid crystal display is provided to prevent a sheet from being crumpled due to non-uniform temperature of a lamp and eliminate light leakage by changing the structure of a mold frame. CONSTITUTION: A back light unit of a liquid crystal display includes a lamp(1) used as a light source, a light guide plate(2) for transmitting light emitted from the lamp, a plurality of sheets(3) for uniformly diffusing the light and focusing the light, and a mold frame(10) accommodating the light source, light guide plate and sheets, guiding and supporting a liquid crystal display panel(5). A sheet protection part(11) is formed at one side of the upper part of the lamp. The sheet protection part comes into contact with the liquid crystal display panel and sheets.
Patent KR-20020057020-A (KR)
Title: Apparatus for fabricating organic electro-luminescent
Inventor: JU SEONG HU
IPC: H01L27/32
Filed: 2000-12-30
Abstract: PURPOSE: A device for manufacturing organic EL(Electro-Luminescent) display is provided to simplify a manufacturing process as a whole by performing an inline process of an insulation film and a cathode separation sidewall. CONSTITUTION: A metal chamber forms a metal electrode layer. A first and a second organic chamber form an organic layer. A glove box performs a protection/sealing process. A vacuum chamber performs an inline process of an insulation film and a cathode separation sidewall. The vacuum chamber includes a frozen target substrate(52), a UV(Ultraviolet) exposer(50), a glass substrate(56), a metal mask(60) which corresponds to the insulation film and the cathode separation sidewall, and a hot stage(62) which evaporates a volatile solvent.
Patent KR-20020057296-A (KR)
Inventor: GO WUN MAM
IPC: A24B15/00
Filed: 2000-12-30
Abstract: PURPOSE: A green tea and mugwort tobacco is provided to achieve a mouth cleanness effect through the smoking of the tobacco by virtue of the perfume of the green tea and the mugwort. CONSTITUTION: The green tea and mugwort tobacco consists of a filter part(100) for filtering components harmful to human body during the smoking of the tobacco; a connection pipe(200) extended integrally from the one side of the filter part and formed with an inner guide groove(210); and a tobacco part(300) having a mixture(310) of mugwort leaves and green tea with 50 to 50.
Patent KR-20010022012-A (KR)
Title: 가스의 상대밀도 측정방법 및 장치
IPC: G01H5/00
Filed: 1998-07-17
Abstract: 본 발명은 예를 들면 천연가스등의 가스의 상대밀도 측정방법 및 장치에 관한 것으로서, 가스는 흡입구(8)를 통해 공급되어 배출구(10)를 통해 배출되며, 제어수단(16) 및 초음파 변환기 이미터(12) 및 초음파 변환기 수신기(14)를 사용하여, 표준조건으로 보정된 가스내의 음속을 계산하고, 그 후 제어수단(16)이 수학식 를 사용하여 가스의 상대밀도 RD를 측정하도록 작동되는 것을 특징으로 한다(여기에서, SoSsc는 표준 조건으로 보정된 가스내의 음속, a 및 b는 상수이다).
Patent KR-20010022242-A (KR)
Title: 지용성 약물을 함유하는 분말
IPC: A61K47/04
Filed: 1999-05-24
Abstract: 본 발명은 (A) 지용성 약물, (B) 젤라틴 및(또는) 카제인 중 1 종 이상, (C) 흡착제 및 추가로 필요에 따라 (D) 수용성 고분자 물질을 포함하는 유동성 분말 및 그의 제조 방법에 관한 것이다.
Patent KR-20010023576-A (KR)
Title: 복잡한 집적회로 장치를 위한 재사용가능 모듈
IPC: G06F17/50
Filed: 1998-08-27
Abstract: 모듈을 상호접속하는데 요구되는 특수 목적 글루 로직을 설계할 필요성을 없애거나 감소시키기 위해 재사용가능한 모듈을 채택함으로써 집적회로 장치의 설계가 단순화된다. 기능 모듈은 버스에 의해 상호접속되고 규정된 버스 억세스 프로토콜에 따라 동작하는 인터페이스 회로를 포함한다. 바람직한 실시예에서, 버스 억세스는 장치내의 주모듈에 의해 제어될 수 있는 적응성 방식으로 중재된다. 다른 실시예에서는, 버스 중재가 요구되지 않는다. 각 기능 모듈의 동작은 주모듈의 제어하에 프로그램될 수 있다.
Patent KR-20010024347-A (KR)
Title: 와이퍼 아암
IPC: B60S1/40
Filed: 1999-07-14
Abstract: 본 발명은 와이퍼 구동기구의 구동축상에 고정하기 위해 제 1 단부에 베어링(6)을 구비하며 제 2 단부상의 링크(18)에 의해 링크부재(14)에 연결되는 고정부재(12)를 포함하는 와이퍼 아암에 관한 것으로서, 상기 고정부재(12)는 링크축(20)에 대해서 경사지게 연장되며 실질적으로, 자동차 차창에 대해서 수직으로 연장되는 측벽(40, 42)을 구비하고, 상기 측벽(40, 42)은 적어도 자동차 차창에 대향된 측부상의 적어도 링크(18) 영역에서 덮개벽(60)에 의해 연결되며 링크부재(14)의 측벽(44, 46)과 중첩된다. 
     본 발명에 따라서, 덮개벽(60)은 와이퍼 아암(10)이 정지위치에 위치될 때, 고정부재(12)의 하부 측벽(40)으로부터 상부 측벽(42) 방향으로 증가하는 거리만큼 링크축(20)으로부터 이격된다.
Patent KR-20010024638-A (KR)
Title: 고성능 단일 모드 도파관
IPC: G02B6/036
Filed: 1998-10-15
Abstract: 세그먼트화된 코어 디자인을 갖는 단일 모드 광도파관 섬유가 개시된다.  특히, 상기 코어는 3개의 세그먼트(2, 6, 8)를 포함하며, 각각은 특징적인 치수 및 굴절률 프로파일을 갖는다.  각각의 세그먼트에 있어서 굴절률 프로파일을 적절하게 선택함으로써 도파관 섬유가 제조되고, 상기 도파관 섬유는 60㎛ 2 보다 큰 유효면적을 가질 뿐만 아니라 약 9.5의 모드 장 지름(mode field diameter) 및 1530∼1565㎚의 작동 윈도우에 걸쳐 낮은 양의 값인 총 분산을 갖는다.  또한, 상기 프로파일은 내부 및 외부 프로파일 체적 및 내부 체적에 대한 외부체적의 비에 의하여 정의된다.  이처럼 내부 체적은 2.28∼3.26%㎛ 2 의 범위 내이고, 외부 프로파일 체적이 3.70∼13.75%㎛ 2 의 범위이며, 그리고 내부 체적에 대한 외부 체적의 비가 1.5∼4.3의 범위 내이다.
Patent KR-20010040311-A (KR)
Title: 다이아몬드 또는 원석에 다수의 홈을 이용한 마크 표시방법
IPC: G02B21/00
Filed: 1998-12-23
Abstract: 본 발명은 다이아몬드 또는 보석의 원석의 표면에 마크를 형성하기 위한 방법 및 장치에 관한 것으로서, 마크는 다이아몬드 또는 보석의 원석의 투명 등급을 손상시키지 않는 다수개의 홈들로 이루어지고, 이것은 일정한 조명과 확대 조건 하에서 고도 회절 효과를 나타낸다. 또한 본 발명은 기술된 것과 같은 마크를 보기 위한 장치 및 방법에 관한 것이다.
Patent KR-20010033859-A (KR)
Title: Ｃｏｘ-2 억제제로서의 2,3-치환된 인돌 화합물
IPC: A61K31/4725
Filed: 1998-12-18
Abstract: 본 발명은 하기 화학식 I의 화합물 또는 그의 제약학상 허용가능한 염을 제공한다. 
     ＜화학식 I＞ 
     
       
     
     식 중, 
     Z는 OH, C 1-6 알콕시, -NR 2 R 3 또는 헤테로사이클이고; Q는 (a) 치환될 수 있는 페닐, (b) 1, 2, 3 또는 4개의 질소 원자를 포함하는, 치환될 수 있는 6원 모노시클릭 방향족 기, (c) O, S 및 N 중에서 선택된 1개의 헤테로원자를 함유하고, 상기 헤테로원자 이외에 1, 2 또는 3개의 질소 원자를 함유할 수 있으며, 치환될 수 있는 5원 모노시클릭 방향족기; (d) 치환될 수 있는 C 3-7 시클로알킬; 및 (e) 치환될 수 있는 벤조-융합된 헤테로사이클 중에서 선택되고; R 1 은 수소, C 1-4 알킬 또는 할로이고; R 2 및 R 3 은 독립적으로 H, OH, C 1-4 알콕시, C 1-4 알킬, 또는 할로, OH, C 1-4 알콕시, 또는 CN으로 치환된 C 1-4 알킬이고; X는 H, 할로, C 1-4 알킬, 할로-치환된 C 1-4 알킬, OH, C 1-4 알콕시, 할로-치환된 C 1-4 알콕시, C 1-4 알킬티오, NO 2 , NH 2 , 디-(C 1-4 알킬)아미노 및 CN 중에서 독립적으로 선택되며; n은 0, 1, 2, 3 또는 4이다.  본 발명은 또한 병원체로 프로스타글란딘이 관여하는 의학 질환의 치료에 유용한 제약 조성물을 제공한다.
Patent KR-20010072545-A (KR)
Title: 열처리실용 기판 지지부
IPC: H01L21/26
Filed: 1999-02-08
Abstract: 본 발명은 반도체 웨이퍼를 수용하는 선반을 포함하는 열처리실용 반도체 웨이퍼 지지부에 관한 것이다.  이러한 반도체 웨이퍼 지지부는 기판에 배치된 폴리실리콘층 및 폴리실리콘층에 배치된 질화규소층을 가지는 탄화규소 기판으로 형성된다.  다층 반도체 웨이퍼 지지를 형성하는 방법은 또한 공지되어 있다.
Patent KR-20010041142-A (KR)
Title: 단일 프로세서 동작 방법 및 프로세서의 네트워크를동작시키는 방법
IPC: G06F9/46
Filed: 1999-12-16
Abstract: 메모리와 콘텍스트 레지스터 세트 간에 완전한 스레드 콘텍스트를 전달함으로써 신속한 스레드 처리가 달성된다.   지정된 인터럽트 또는 인스트럭션에 응답하여 각각의 메모리 위치로부터 각각의 스레드 콘텍스트가 판독된다.
Patent KR-20010041706-A (KR)
IPC: B65H5/34
Filed: 1999-03-11
Abstract: A description is given of a device for separating from each other a plurality of objects (R) which are adjacent to each other and are being fed in a direction of advance (F) along an advance path (21), comprising a member (37) which is rotatable about an axis of rotation (37A) and is positioned, with respect to the direction of advance, in such a way that it interferes with the articles (R) fed along said advance path. The peripheral velocity of said rotatable member at the point of contact between said member and said articles has a component substantially matching the direction of advance of the articles along said path.
Patent KR-20010043337-A (KR)
Title: 통신 네트워크를 통한 정보 배송 방법
IPC: H04N21/426
Filed: 1999-04-29
Abstract: 통신 네트워크에서 가입자 단말기(130)에 정보를 배송하는 방법 및 장치가 기술된다. 정보가 가입자의 선택된 데이터 또는 프로그램의 수신 및/또는 디스플레이에 간섭을 일으킴이 없이 정보가 동시에 디스플레이 된다.
Patent KR-20020060305-A (KR)
Title: Underfill device for semiconductor package
Inventor: BAEK JUNG HYEON
IPC: H01L21/56
Filed: 2001-01-10
Abstract: PURPOSE: An under-fill device for a semiconductor package is provided to reduce the under-fill process time without a void by using an under-fill device employing a dispensing method and to carry out the under-fill process for the plural substrates at the same time. CONSTITUTION: The device includes a blower unit(22) blowing air at a specific velocity, an air duct consisting of a main duct(23) through which the air supplied from the blower unit passes and a subsidiary duct(25) connected with the main duct and placed in a portion of a semiconductor device(32), and a dispenser(36) installed opposite to the subsidiary duct to supply a filler(38) at the other side of the semiconductor device of a substrate(30). If the filler is supplied to the semiconductor device while air is blown to the main duct at a specific velocity, the air flows into the subsidiary duct by the pressure difference between the main duct and the subsidiary duct and the filler is charged from one side to the other side of the semiconductor device.
Patent KR-20020061976-A (KR)
Title: Temperature sensor using shape memory alloy and a manufacturing method thereof
Inventor: PARK JI HUN
IPC: G01K7/18
Filed: 2001-01-19
Abstract: PURPOSE: A temperature sensor using shape memory alloy and manufacturing method of the same are provided to reliably determine whether products exposed to temperature exceeding critical temperature or stored for a long time are damaged. CONSTITUTION: A temperature sensor includes a sensor part(100) M-shaped, having legs(101,102) bent on both sides of a bent bridge(103) and inserted to a product to be detected by a tool such as a stapler to have a first shape(M-shape) over a critical temperature and a second shape under the critical temperature so as to be separated from the product when returning to the first shape by dynamic stability. The product with the separated sensor part is determined to be damaged.
Patent KR-20020062074-A (KR)
Title: Temperature controlling system for the surface of an electrostatic chuck using heaters
Inventor: KIM HYE RAN
IPC: H01L21/68
Filed: 2001-01-19
Abstract: PURPOSE: A system for controlling a surface temperature of an electrostatic chuck using an electric heater is provided to easily control the temperature of the main body of the electrostatic chuck by electrically heating a predetermined region of the main body of the electrostatic chuck having a temperature gradient, and to improve yield of a wafer by uniformly maintaining the surface temperature of the electrostatic chuck even when the size of the wafer is large. CONSTITUTION: A static electricity generating unit generates static electricity to chuck the wafer, mounted on the main body(10) of the electrostatic chuck. An electrical heating unit(31) detects the surface temperature of the electrostatic chuck and separately heats a portion having a temperature gradient, installed between the main body of the electrostatic chuck and the static electricity generating unit.
Patent KR-20020064057-A (KR)
Title: Manufacturing method of a kit of radiolabeled antibiotics and its precursors for imaging bacterial infection in nuclear medicine and its diagnosing protocol
Inventor: CHOE WON SICK
IPC: A61K51/00
Filed: 2001-01-31
Abstract: PURPOSE: Provided is a manufacturing method of a detection kit by imaging bacterial infection in nuclear medicine using radiolabeled antibiotics. Also, provided are precursor therefor and a diagnosing protocol using the same. CONSTITUTION: The manufacturing method of a detection kit of radiolabeled antibiotics comprises the steps of: reducing antibiotics having toxicity on bacteria by mixing it with a reductant in a mixing ratio of 2:1 to prepare a first mixture; mixing the first mixture with an isotope to prepare a second mixture; and heating the second mixture to bind the antibiotics to the isotope included in the second mixture. Wherein, the antibiotics is selected from ciprofloxacin, augmentin and INH; the isotope is selected from Tc-99m, indium-111, Iodine-131 and iodine-123; the reductant is selected from formamidine sulfinic acid and formamidine sulfonic acid.
Patent KR-20010082650-A (KR)
Title: Rotary damper
Inventor: MACHIDA KAZUNORI
IPC: B60N3/02
Filed: 2001-02-15
Abstract: PURPOSE: A rotary damper is provided to improve damping force by installing a slip preventive member, and to assemble the rotary damper with a vehicle conveniently by checking the position of rings. CONSTITUTION: A rotary damper is composed of an outer tube(13) having a tubular space(37) closed in the tube wall; and an inner tube(12) having a tubular space closed in the tube wall. The diameter of the inner tube is smaller than the diameter of the outer tube. An outer wall of the inner tube is inserted to the tubular space of the outer tube, and an inner wall(32) of the outer tube is inserted to the tubular space of the inner tube. O-rings are installed in the ends of gaps between an outer wall(31) of the outer tube and the outer wall of the inner tube, and between the inner wall of the outer tube and an inner wall(22) of the inner tube. Viscous material is filled between the inner tube and the outer tube. Clearance is formed between the inner tube and the outer tube. The damping force is improved with enlarging the contact area of the viscous material. The rotary damper is assembled with the vehicle conveniently.