baber/WOPTO huggingface dataset:
Patent KR-20010037582-A (KR)
Title: Without high pressure air tank
Inventor: LEE GWAN HO
IPC: F04B49/00
Filed: 1999-10-14
Abstract: PURPOSE: A direct supply type air compressor is provided to achieve an improved portability and allow the high pressure air to be utilized in a narrow space. CONSTITUTION: An air compressor comprises a high pressure sensing unit(10) connected, through a joint(6), to a discharge unit(5) having a piston which reciprocates in a vertical direction by a motor(1) so as to compress the air existing within a cylinder(2) into a high pressure state and supply the compressed air; a switching operation unit(20) which shifts position centering from a pivot axis(21) upon displacement of an expansion displacement unit(11) of the high pressure sensing unit; an elastic support unit(30) which prevents the switching operation unit from shifting position when the switching operation unit has a low pressure so as to contact the expansion displacement unit of the high pressure sensing unit; a control switch unit(40) for permitting an end of the switching operation unit to be manually operated; and a regulator(60) for moving a piston in a vertical direction by the power from a power generating unit so as to compress the air existing within the cylinder into a high pressure state.
Patent KR-20010037647-A (KR)
Inventor: CHO JAE MUN
IPC: G11B27/28
Filed: 1999-10-19
Abstract: PURPOSE: An apparatus for recording and reproducing moving picture is to automatically further record a representative image to assume an entire scenario among input moving picture data stream, and then automatically research the position of the recorded representative image and reproduce the image at high speed. CONSTITUTION: A recording portion records a position of a representative image and an input moving picture data stream detected when scene change among the moving picture data stream is occurred, in a recording medium(14). In the recording portion, a key frame detecting and marking portion(10) detects the position of the key frame corresponding to the representative image when the scene change is occurred among the moving picture data stream, and then marks the detected position. A record processing portion(12) records the moving picture data stream, in which the position of the representative image is marked, in the recording medium. The key frame detecting and marking portion detects the representative image and whether the scene change is occurred, based on a coding specification of the coded moving picture data stream.
Patent KR-20010037680-A (KR)
Inventor: HWANG YU SANG
IPC: H01L27/108
Filed: 1999-10-19
Abstract: PURPOSE: A capacitor and a manufacturing method thereof are to allow a lower electrode to directly contact with a landing pad without a contact plug to accomplish a simplified process and a high capacitance compared with a small area. CONSTITUTION: A substrate(210) is provided with at least one gate electrode(212), between which a landing pad(214) is formed. The landing pad consists of polysilicon or doped polysilicon. On the front of the substrate is deposited the first insulating layer(216) of O3-TEOS undoped silica glass. On the first insulating layer is formed a bit line(218) having a structure deposited with tungsten silicide on a single tungsten layer or polysilicon. On the front of the substrate is deposited the second insulating layer(220) of a silicon nitride layer(222) which is deposited on a sacrificial oxide layer consisting of at least one of undoped silica glass and boron phosphorus silica glass and which acts as an etch stopping layer with respect to an oxide layer. The insulating layers are etched in turn by a photo process to form an opening(226) until the landing pad(214) is exposed. On the exposed landing pad through the opening is formed a TiSi layer(228). The opening is deposited with metal layer on its surface so that a lower electrode(230) is created.
Patent KR-20010038267-A (KR)
Inventor: HWANG GYEONG YEOP
IPC: A62D1/02
Filed: 1999-10-23
Abstract: PURPOSE: A compositon of a clean agent for a fire extinguisher containing CO2 and trifluoroiodinemethan(HFC-23) is provided, whose fire extinguisher efficiency is excellent and whose global warming index and price are low. CONSTITUTION: A clean agent for a fire extinguisher containing CO2 and trifluoroiodinemethan(HFC-23) is composed of 0.1-99.9mol% of CO2 and 99.9-0.1mol% of HFC-23. And the agent is stored in the type of high-press liquefied gas so that a storage tank can be minimized and the price can be lowered.
Patent KR-20000029407-A (KR)
Title: Semiconductor memory device
Inventor: SUZUKI TAKAAKI
IPC: G11C7/10
Filed: 1999-10-29
Abstract: PURPOSE: A semiconductor memory device having a reduced read/write cycle, in case that read data latency and write data latency are identical each other, is provided. CONSTITUTION: An FCRAM(Fast Cycle Random Access Memory) comprises a clock buffer(1), a command decoder(2), a control signal buffer(3), a row address buffer(4), a column address buffer(5), an address latch & comparator(6,7), a mode register(8), a data latency counter(9), a data converter(10,12), a data input buffer(11), a data output buffer(13), a bank(0) circuit(14) and a bank(1) circuit(15). The bank(0) circuit(14) and the bank(1) circuit(15) comprises a plurality of memory blocks, a RAS generating unit(16), a precharge signal(PRE) generating unit(17), a control device(18), a block decoder(19), pre decoders(20-1,20-2), a word decoder(21), a 1/4 decoder(22), a bit line transfer(BLT) decoder(23), a sense amplifier driving signal(S/A) generating device(24), a column decoder(25), a control circuit(26), a read/write buffer(27), a write data buffer(28) and a core circuit(29) respectively.
Patent KR-20010044846-A (KR)
Inventor: CHA HEUI JANG
IPC: G06Q40/02
Filed: 1999-11-01
Abstract: PURPOSE: A financial analysis method is provided to enable a user to input personal data and financial data, to analyze personal finance state, and to determine amount of investment and installment savings based on the analysis results. CONSTITUTION: The method comprises steps of guiding a user to input personal data and financial data, calculating yearly finance demand, calculating yearly finance supply, comparing the yearly finance demand with the yearly finance supply, outputting the yearly finance demand, the yearly finance supply, and the compared result, asking the user if a stability finance plan is needed, guiding the user to input supplementary financial data, repeating the calculation and comparison process of the yearly finance demand and supply, outputting the calculation and comparison result on the supplementary financial data, asking the user if the supplementary financial data is modified, repeating the calculation and comparison process on the modified financial data, and finishing the process.
Patent KR-20000035170-A (KR)
Inventor: SUGAYA SHIGERU
IPC: H04L12/70
Filed: 1999-11-02
Abstract: PURPOSE: A transmitting method and apparatus is provided to transmit data transmitted over a wire transmission path, via a radio transmission path efficiently,regardless of the data format. CONSTITUTION: Data are transmitted via a wire transmission path by conducting assembly or segmentation on data packetized in a predetermined form, and thereby data having quantities which can be transmitted as one unit is transmitted. Data concerning the assembly or segmentation of the packet structure is added to data produced from the assembly or segmentation as overhead information. And, the data having the added overhead information is provided with a data structure for radio transmission. The converted data is transmitted via a predetermined radio transmission path. On a reception side of the radio-transmitted data, the packet structure of the received data is determined on the basis of the received overhead information, and segmentation or assembly is conducted to restore an original packet structure.
Patent KR-20010045760-A (KR)
Inventor: KIM MUN CHEOL
IPC: B05D7/22
Filed: 1999-11-08
Abstract: PURPOSE: A method for coating is provided, to form a corrosion resistant and abrasion resistant layer on the inside surface of penetrating components by thermal spray coating alloy, metal, ceramic or cement. CONSTITUTION: The inside surface of penetrating components(1) is coated by using a thermal spray coating apparatus for detonation, equipped with a thermal spray pipe(3) for detonation. The method comprises the steps of placing a flame direction converting trigonal pyramid(7) within the penetrating components(1) at regular intervals with the terminal of thermal spray pipe(7) for detonation; and detonation-thermal spraying the thermal spray coating powder to coat the inside surface of the penetrating components(1). The flame direction converting trigonal pyramid(7) comprises two steps, wherein the first step has the slope angle below 30 degree, the second step has the slope angle of 30-45 degree, and the length ratio of the first step to the second step is 2:1 to 3;1.
Patent KR-20010047637-A (KR)
Inventor: KIM YU IN
IPC: F28D20/00
Filed: 1999-11-22
Abstract: PURPOSE: A combined air conditioning system and solar water heater is provided to achieve a maximized heating efficiency by raising the pressure and temperature of refrigerant through the use of solar heat. CONSTITUTION: A system comprises a four-way valve(50) for circulating and reversely circulating the refrigerant compressed by a compressor(40) so as to perform cooling/heating operation; heat exchangers(60,70) for condensing and evaporating the refrigerant transferred from the four-way valve; an expansion valve(80) for adjusting the flow volume of the heat-exchanged refrigerant; a refrigerant flow channel(21) arranged to allow the refrigerant to pass through a hot water storage reservoir(20) of the solar water heater; a first solenoid valve(90) mounted to a second connection pipe(102) for connecting the expansion valve and the heat exchanger so as to control the flow direction(g) of the refrigerant being transferred to the refrigerant flow channel toward the hot water storage reservoir and the heat exchanger; and a second solenoid valve(91) mounted to the refrigerant flow channel. The heating efficiency is improved by heating exchanging the refrigerant within the hot water storage reservoir during opening or shutting operation of first and second solenoid valves.
Patent KR-20010047639-A (KR)
Inventor: KIM SEOK GYUN
IPC: F24F11/00
Filed: 1999-11-22
Abstract: PURPOSE: A method for controlling defrost operation for cooling/heating air conditioner is provided to reduce frequency of defrost operation and achieve an improved system efficiency. CONSTITUTION: A method comprises a step(S410) of judging whether the temperature of the coil of outdoor heat exchanger is lower than 0 Deg.C; a step(S412) of sensing the temperature change state if the temperature is lower than 0 Deg.C; a step(S414) of judging whether a predetermined time period(N) has lapsed if no change exists in the temperature or the temperature is lowered; a step(S416) of judging whether the temperature change is constant, if a predetermined time period has lapsed; a step(S418) of judging whether the current coil temperature is lower than a predetermined temperature(X) for performing defrost operation; a step(S422-S426) of performing defrost operation by turning off the indoor fan, outdoor fan and compressor, turning off the four-way valve and turning on the compressor, if the coil temperature is lower than the predetermined temperature; a step(S428,S430) of judging whether the temperature of coil of the outdoor heat exchanger is higher than a predetermined temperature(Y), and turning off the compressor if the temperature of coil is higher than the predetermined temperature; a step(S432,S434) of performing heating operation by turning on the four-way valve and turning on the compressor and outdoor fan; and a step(S436,s438) of comparing the temperature of coil of the indoor heat exchanger with a predetermined temperature(Z) for performing heating operation, and performing heating operation by turning on the indoor fan if the temperature of coil is higher than the predetermined temperature.
Patent KR-20010054589-A (KR)
Inventor: LEE JAE GWON
IPC: F25B1/00
Filed: 1999-12-07
Abstract: PURPOSE: A refrigeration cycle for air conditioner of duct type embedded within ceiling is provided, in which the refrigeration cycle is constituted as a multiple stage compression refrigeration cycle with one or more evaporators, to thereby reduce time taken for cooling the indoor area and achieve an improved cooling efficiency. CONSTITUTION: A refrigeration cycle comprises a condenser(2) for heat exchanging the high pressure high temperature vapor refrigerant and converting the refrigerant into a high pressure ordinary temperature liquid refrigerant; an expansion valve(4) for converting the high pressure ordinary temperature liquid refrigerant passed through the condenser into a low pressure low temperature liquid refrigerant; a first evaporator(8) for cooling the air blown from a blower(6), while the low pressure low temperature liquid refrigerant is being introduced from the expansion valve; a second evaporator(10) spaced apart from the first evaporator so as to cool again the air which is cooled through the first evaporator; and a compressor(12) for converting the low pressure low temperature vapor refrigerant discharged from the second evaporator into a high pressure high temperature state.
Patent KR-20010054692-A (KR)
Inventor: HAN GEUM TAE
IPC: B61H1/00
Filed: 1999-12-07
Abstract: PURPOSE: A brake assembly for a rail road vehicle is provided to improve the buffering effect with respect to thermal stress generated when operating a brake system, prevent or reduce the heat transmission from a brake disc to a hub, and improve the emission of heat for preventing the generation of cracks. CONSTITUTION: A brake assembly for a rail road vehicle includes a hub(10) integrally formed with a cylindrical main body(14) fixed to an axle, a flange(16) extended from a side of the main body to be in the shape of arc, and a mounting part(18) formed at a front end part of the flange with a plurality of mounting holes(20), and a brake disc(12) integrally formed with a fixing part(24) to be fixed to the mounting part of the hub and having a plurality of fixing holes(26) corresponding to the mounting holes, two brake compression parts(30) integrated with the fixing part facing to each other to be compressed by brake pads of a brake system, and a plurality of ribs disposed with an acute deflection angle(a) with respect to a radial direction shaft extended between the brake compression parts outwardly in a radial direction.
Patent KR-20010063282-A (KR)
Inventor: BANG JEONG IL
IPC: G06F12/14
Filed: 1999-12-22
Abstract: PURPOSE: An apparatus and method for protecting a memory area is provided to protect a memory area to be protected by a specific object as a user stack area using a hardware. CONSTITUTION: If a CPU(11) outputs an address signal and a control signal for accessing a specific application program, an application program identifier(12) latches the starting address and the end address of the corresponding task by analyzing the address outputted from the CPU(11). An application stack range table(13) consists of the starting address and the end address of a specific application program stack area. An application address comparison unit(14) outputs a RANGE signal if an address range outputted from the CPU(11) is included in an address range outputted from the application stack range table(13) by comparing a value outputted from the application stack range table(13) with the address range of an address outputted from the application stack range table(13) while the CPU(11) performs the specific application program and an address outputted from the CPU(11). A local device control signal outputting unit(15) outputs a control signal of the corresponding device using the RANGE signal from the application address comparison unit(14). A main memory unit(16) stores a plurality of application programs.
Patent KR-20000012761-A (KR)
Inventor: CHANG SEUNG WOONG
IPC: B42D15/02
Filed: 1999-12-23
Abstract: PURPOSE: A combination name card and discount card and the treating method are provided to maximize personal advertising effect by adding a discounting function. CONSTITUTION: The name card has a firm name, contacting numbers, an additional device for discounting and a member number for contacting the homepage address. The card is manufactured with paper or plastic and when using, the consumer receives the discount with the name card and at the same time contacts the personal homepage of the distributor by inputting the member number in the card. therefore, the card can increase advertising effect by having the additional function for discounting as well as having the same function as the present name card.
Patent KR-20010063824-A (KR)
Inventor: BAE HYEONG DEUK
IPC: H04L12/24
Filed: 1999-12-24
Abstract: PURPOSE: A method for event notification in a communication network using a mediator is provided to transmit a PER(Potential Event Report) only to an EFD(Event Forwarding Discriminator) satisfying a discrimination condition, so as to reduce the delay of event notification. CONSTITUTION: A mediator receives event notification from a management object generating an error, and searches an EFD(Event Forwarding Discriminator) list, to discriminate an event transmission identifier for the event notification. A PER(Potential Event Report) for the event notification is transmitted to the discriminated event transmission identifier. The event transmission identifier extracts a destination list from the PER, to deliver an actual event report to a manager of the destination.
Patent KR-20010060957-A (KR)
Inventor: KWON EUN HUI
IPC: H04M3/42
Filed: 1999-12-28
Abstract: PURPOSE: A delivery service method of a voice message using an intelligent network is provided to link an originating intelligent network service with a voice message delivery service in real time, to enable the voice message delivery service regardless of the kind and location of a terminal. CONSTITUTION: A subscriber(102) connects with a voice message delivery service system(101). The voice message delivery service system(101) transmits an intelligent network service subscriber and a password of the subscriber(102) to an intelligent network service system(104), to request the authorization of a subscriber. If the authorization is successful, a voice message is delivered according to the state of a voice message delivery service. If the authorization is a failure, the cause of the authorization failure is delivered to the subscriber(102). If the cause of the failure is a release state by the loss or an unobtainable number, a voice message delivery service state is changed to a release state.
Patent KR-20000023646-A (KR)
Inventor: FARINA CARLO
IPC: C07D451/02
Filed: 1999-01-08
Abstract: PURPOSE: Indole derivatives are provided which are useful in treating osteoporosis by inhibiting activity of osteoclast. CONSTITUTION: Indole derivatives have a structure of formula 1 wherein Ra is a hydrogen, an alkyl or randomly substituted aryl group of R5; Rb is residue of formula a; R6 and R7 are independently a hydrogen, a hydroxy, an amino, an alkoxy, a randomly substituted aryloxy, a randomly substituted benzyloxy, an alkylamino, a dialkylamino, a halo, a trifluoromethyl, a trifluoroethoxy, a nitro, an alkyl, a carboxy, a carboxyalkoxy, a caramel, an alkylcaramel or R6 and R7 together represent a methylenedioxy, a carbonyl or a carbonyl; R8 is a hydrogen, a hydroxy, an alkanoyl, an alkyl, an amino alkyl, a hydroxyalkyl, a carboxy alkyl, a cabal alkyl, a caramel or an aminosulfonyl.
Patent KR-20000069010-A (KR)
IPC: C08F12/00
Filed: 1998-09-17
Abstract: 본 발명은 (a) 전이금속 화합물, (b) 점토, 점토광물 및 이온 교환성 층상 화합물로부터 선택된 1종 이상의 물질, (c) 실란 화합물, 또한 필요에 따라서 (d) 알킬화제로부터 형성된 올레핀계 단량체 중합용 촉매; (a) 전이금속 화합물, (b) 점토, 점토광물 및 이온 교환성 층상 화합물로부터 선택된 1종 이상의 물질, (c) 실란 화합물, 및 필요에 따라서 (e) 유기알루미늄 화합물, 및 또한 필요에 따라서 (d) 알킬화제를 사용하여 형성된 올레핀계 단량체 중합용 촉매; 당해 올레핀계 단량체 중합용 촉매의 존재하에 올레핀계 단량체 또는 스티렌계 단량체를 단독중합 또는 공중합시킴을 특징으로 하는 올레핀계 중합체 또는 스티렌계 중합체의 제조방법에 관한 것이다. 
     이들에 의해 알룸옥산을 다량으로 사용하지 않고 활성이 높고 더구나 잔류 금속량이 적은, 품질이 양호한 올레핀계 중합체 또는 고입체 규칙성 스티렌계 중합체를 공업적으로 유리하게 효율적으로 수득할 수 있는 올레핀계 단량체 중합용 촉매 및 당해 촉매를 사용한 중합체의 제조방법을 제공할 수 있다.
Patent KR-20000069736-A (KR)
IPC: C02F1/14
Filed: 1998-02-16
Abstract: 해수를 처리하여 자연염이나 담수를 제조하는 방법 및 장치, 해수를 처리하여 제조한 자연염 및 담수에 관한 것으로, 고가의 설비를 필요로 하지 않고, 게다가 매우 단시간에 효율적으로 자연염이나 담수를 제조할 수 있는 해수의 처리방법 및 처리장치를 실현하는 것을 목적으로 한다.  해수를 분무화하며, 동시에 온풍을 가함으로써, 수분을 증발시켜 염분의 결정을 촉진시켜, 증류수 또는 염분의 적어도 한 쪽을 얻는다.  이 때, 증발수분이 흐르는 도중에 1단 또는 복수단에 망 또는 천의 적어도 한 쪽을 설치하고, 증발수분이 해당 망이나 천을 통과할 때에, 염분을 망이나 천에 부착시키는 것을 특징으로 하는 방법과 장치이다.
Patent KR-20000070651-A (KR)
Title: 사이징 에멀션
IPC: D21H17/16
Filed: 1998-01-28
Abstract: (a) 소수성 셀룰로스-반응성 사이징제와 (b) 아민, 아민염 및/또는 4급 아민으로 이루어진 사이징 에멀션, 및 에멀션 제조를 위한 저 전단 및 고 전단 방법 및 사이징 종이를 위한 에멀션 사용방법이 기재되어 있다.
Patent KR-20000076095-A (KR)
Title: 화상에 워터마크를 내장하는 방법 및 검출 방법
IPC: H04N1/32
Filed: 1999-01-08
Abstract: 디지탈 화상 신호는 화상의 기하학적 특징을 국부적으로 변경함으로써 워터마크된다. 워터마크는 의사-랜덤, 화상 화소의 밀도 집합, 예를 들면 라인의 패턴(20)으로 구성된다. 가장 중요한 화상 화소(21, 22, 23)의 수, 즉 미리 정해진 처리 동작에 가장 높은 응답을 주는 화소가 결정되고 이후 라인 패턴의 근방(δ)으로 이동된다(24). 이러한 왜곡의 결과로서, 대다수의 중요한 화상 화소(21, 22)는  실질적으로 라인 패턴의 근방안에 위치된다. 수신기의 끝에서, 입력 화상의 가장 중요한 화소가 다시 결정된다. 이 화상은 라인 패턴의 근방안에서 통계적으로 높은 비율이 있으면 워터마크 화상이다.
Patent KR-20010012959-A (KR)
IPC: C07D401/14
Filed: 1998-05-14
Abstract: 1) 화학식 (α)의 화합물 을 화학식 (β)의 화합물 과 1.2:1 내지 1.4:1의 몰비로 반응시키고; 
     2) 반응 1)의 생성물에 존재하는 화학식 (γ) 의 말단 기와 예컨대 디부틸아민을 2:1.7 내지 2:3의 몰비로 반응시키며; 
     상기 반응 1) 및 2)는 무기 염기 존재하에 유기 용매에서 실시되고; 또 
     3) 반응 2)의 생성물을 퍼옥시드 분해 촉매 존재하에 탄화수소 용매에서 히드로퍼옥시드와 반응시켜 반응 2)의 생성물에 존재하는 화학식 의 기를 화학식 의 기로 전환시키며; 
     R 1 이 특히, 히드로카르빌 라디칼, B가 예컨대 N-(2,2,6,6-테트라메틸-4-피페리딜)-부틸아미노, R이 예컨대 2,2,6,6-테트라메틸-4-피페리딜 및 R 2 가 예컨대 헥사메틸렌인 생성물. 
     이 생성물은 유기 물질, 특히 폴리올레핀 등의 합성 중합체용 광안정화제, 열안정화제 및 산화안정화제로서 유용하다.
Patent KR-20010014357-A (KR)
Title: 제어 가능한 액체 분배 장치
IPC: B67D3/00
Filed: 1998-06-26
Abstract: 소정량의 물질을 분배하는 분배 장치는 물질을 수용하는 입구 포트, 분배 장치으로부터 분배되는 물질이 방출되는 출구 포트, 체적이 조정 가능한 내부 챔버가 있는 하우징, 그리고 개방 작동 모드와 폐쇄 작동 모드로 작동 가능한 제1 밸브를 구비한다.  상기 제1 밸브는 이 제1 밸브가 개방 작동 모드로 작동하는 경우에는 상기 물질이 상기 입구 포트로부터 상기 내부 챔버로 유입될 수 있고, 이 제1 밸브가 폐쇄 작동 모드로 작동하는 경우에는 상기 물질이 상기 입구 포트로부터 상기 내부 챔버로 유입되는 것이 저지될 수 있게 상기 입구 포트와 상기 내부 챔버 사이에 배치된다.  분배 장치는 개방 작동 모드와 폐쇄 작동 모드로 작동 가능한 제2 밸브를 추가로 구비한다.  상기 제2 밸브는 이 제2 밸브가 개방 작동 모드로 작동하는 경우에는 상기 물질이 상기 내부 챔버로부터 상기 출구 포트로 유입될 수 있고, 이 제2 밸브가 폐쇄 작동 모드로 작동하는 경우에는 상기 물질이 상기 내부 챔버로부터 상기 출구 포트로 흐르는 것이 저지될 수 있도록 상기 출구 포트와 상기 내부 챔버 사이에 배치된다.
Patent KR-20000076453-A (KR)
Title: 다비트의 데이타를 기억하는 불휘발성 반도체 기억 장치
IPC: G11C11/56
Filed: 2000-01-10
Abstract: 워드선에 판독 전압이 공급될 때 센스 래치 회로군에 의해 판독된 데이타가 각각 데이타 래치 회로군에 래치된다.  이들의 데이타는 판독 데이타 변환 회로로 전송되며 2비트 데이타로 변환된다.  이와 같이, 비트선이나 메모리 셀 어레이 내의 트랜지스터를 사용한 연산 처리를 행할 필요가 없기 때문에 판독 시간을 고속화할 수 있으며 소비 전력을 저감할 수 있다.
Patent KR-20010074356-A (KR)
Title: Bumper Device Of Running Gear
Inventor: CHO SEONG GYU
IPC: G03G15/00
Filed: 2000-01-25
Abstract: PURPOSE: A damping device of a drive gear is provided to be capable of enhancing the reliability of a copy device by removing the shock and noise according to initial engagement between a drive gear and a transfer gear as well as the shock noise due to a gap between the drive gear and a drive shaft. CONSTITUTION: A rubber pad(66) is attached to a front position of a first gear tooth engaged with a first transfer gear(40). A rubber roller(68) is attached to a front surface of the first transfer gear(40) so that the roller(68) can be rotated under the state that the pad(66) is compressed and tightly closed at the time when the first gear tooth is engaged. Further, another two rubber pads are attached to a step part(26) of a drive gear(18) so that noise due to the impulse with a link(30) can be removed.