baber/WOPTO huggingface dataset:
Patent KR-20010044306-A (KR)
Inventor: LEE HAS JIN
IPC: F03G7/10
Filed: 2001-02-02
Abstract: PURPOSE: A method for generating rotational force using difference of weight is provided to permanently generate energy by energizing gravity, to remove environmental pollution source caused by combustion of fossil fuel and to obtain semipermanent rotational force in a low cost. CONSTITUTION: A method for generating rotational force using difference of weight includes the steps of forming a plurality of concave holes(11) inclined more than 30 Deg.C from a central line(A) on a rotary plate, seating metal beads(12) in the concave holes, inserting a driving shaft into a driving shaft hole formed in the rotary plate, and mounting a power generator at both ends of the driving shaft to connect electricity in parallel.
Patent KR-20020064853-A (KR)
Title: Camera support plate for horizontal angle adjustable
Inventor: PARK CHAN HYEON
IPC: H04N5/225
Filed: 2001-02-03
Abstract: PURPOSE: A camera support is provided to separate a supporting plate of a camera into a stator and a rotor, to horizontally rotate the camera in a proper place, thereby enabling a minute angle control by minimizing shakes. CONSTITUTION: A stator(30) is placed on a bottom. A rotor(50) is guided by the stator, and is horizontally rotated with a camera(20). The stator comprises as follows. A guide surface(36) is formed along an edge. An upper hooking end(32) restricts a lower movement of the rotor. A lower hooking end(34) restricts an upper movement of the rotor. The rotor is set on the upper hooking end formed on the stator, and is simultaneously inserted into the guide surface, then forms many hooks(40) on a lower edge. On lower parts of the hooks, one-direction hooking ends are formed.
Patent KR-20020068868-A (KR)
Title: Angle Arbitration Apparatus for Head rest of Automobile
Inventor: LEE SANG CHUN
IPC: B60N2/48
Filed: 2001-02-23
Abstract: PURPOSE: An angle adjuster of a headrest for a vehicle is provided to improve comfortableness by adjusting the angle of the headrest according to the position of a passenger, and to cut down expenses by simplifying the structure. CONSTITUTION: A headrest stay(10) is installed in the lower part of a headrest angle adjuster, and connected to a spring(20), a fixing bracket(30) and first and second side covers. Spring fitting grooves(50,51) are formed between the fixing bracket and the second side cover, and a stopper(31) is formed at the side of the fixing bracket. An insertion part and first, second and third contact parts are formed in the upper part of a pawl ratchet(60), and first and second fitting parts are fitted to the end of the spring. Plural pawl ratchet fitting parts are combined with a ratchet(90) including first and second guides. Comfortableness is improved with adjusting the angle of the headrest according to the position of the passenger by the single spring.
Patent KR-20020069766-A (KR)
Inventor: PARK GI YONG
IPC: A23L2/52
Filed: 2001-02-27
Abstract: PURPOSE: Provided is a cassava bubble by adding water to starch powder then followed by heating to prepare glue, mixing a stabilizer and mixing with cassava starch powders, to maintain the freshness of a product and the viscosity of dough and to give good coloring effect. CONSTITUTION: The cassava bubble is manufactured into a ball form by a granule manufacturing machine using starch then heat-dried. It can be added to fruit beverage, juice and the like, such as tapioca pearl, bubble tea pearl tea and etc.
Patent KR-20010044496-A (KR)
Inventor: KIM NAM IL
IPC: A23K1/165
Filed: 2001-02-28
Abstract: PURPOSE: A method for producing feed for raising fish by using aspergillus is provided, to promote the growth of fish and serve fish meat of improved quality. CONSTITUTION: The method is characterized by the following steps of: (i) forming a mixed fermenting agent by mixing 50% of wheat bran obtained by flour milling of wheat and 50% of rice bran obtained from a pounding process of rice; (ii) getting a mixed water by adding 7% of Sacchromyces to 93% of sterilized and purified water; (iii) getting high quality aspergillus by stirring 75% of the mixed fermenting agent with 25% of the mixed water and cultivating the mixture at 45-50deg.C for 48hr; (iv) concentrating 10% of the cultivated aspergillus and 90% of normal fish feed under high pressure; (v) making the concentrated mixture into the form of a strip of noodle by using an extruding machine and cutting the noodles into a size of 1-5mm; (vi) heating FO paraffin that is digestible by fish and frying the cut feed materials in the heated paraffin for 2-3sec; and then (v) cooling the resulting feed material before packing.
Patent KR-20020071311-A (KR)
Inventor: BAEK YEONG SEOK
IPC: C02F9/02
Filed: 2001-03-06
Abstract: PURPOSE: A water purifying method and system thereof is provided, which regenerate ultrafiltration membrane completely by vibration and air pressure, so that the filtration efficiency is enhanced. In the system, various automatic valves and pumps are connected to one power line thus saving operating cost by one third compared to the conventional system. CONSTITUTION: The method comprises the steps of adsorptively removing organic matter or residual chlorine using activated carbon(120); purifying water by primary filtration using micro filtration membrane(130); purify organic matter and undissolved contaminants by secondary filtration using ultrafiltration membrane; removing foreign matter of ultrafiltration membrane by vibration and air pressure; and regenerating the filter by back washing with treated water.
Patent KR-20020013367-A (KR)
Title: Method for providing personal golf record information using internet
Inventor: KIM SEOK HUI
IPC: G06Q10/10
Filed: 2001-03-15
Abstract: PURPOSE: A method for supplying personal golf record information service is provided to utilize the personal golf record information as the analysis data by making and storing the personal golf record information through a variety of communication apparatuses like a cellular phone, communication network, and PC. CONSTITUTION: A golf record information server receives the personal golf record information of a user through the communication network and stores the information to a DB(S100). The user accesses the golf record information server through the cellular phone and takes the login procedures(S110). The golf record information server provides the user with a personal record information list(S120), and the user selects the game of which the personal record information wants to be transferred(S130). The user also selects a hole of the game(S140) and the golf record information server sends the game record information of the hole to the user(S150).
Patent KR-20020073877-A (KR)
Title: Drying method of welding electrode and drying system for the method
Inventor: PARK KWAN SOON
IPC: F27B17/00
Filed: 2001-03-16
Abstract: PURPOSE: A method for drying a welding electrode which is capable of drying the welding electrode using relatively less energy in a short period of time, and a welding electrode drying furnace for the method are provided. CONSTITUTION: The method for drying a welding electrode comprises the steps of preparing a welding electrode to be dried; putting the welding electrode into a drying furnace equipped with a unit for generating a certain range of ultra-high frequency; and operating the ultra-high frequency generating unit to dry the welding electrode so that the welding electrode has a certain moisture absorption amount appropriate for welding operation. The welding electrode drying furnace for drying a welding electrode using an ultra-high frequency comprises a body(105) in which a receiving part(106) is formed to receive a welding electrode to be dried, and one side of which is opened; a door(110) for covering the opened part of the body; an ultra-high frequency generating unit(130) for generating an ultra-high frequency into the receiving part of the body; an exhaustion unit(140) for exhausting a gas in the receiving part of the body to the outside; a controller(121) for controlling electric power supplied to the ultra-high frequency generating unit to control drying temperature of the welding electrode; and a timer(122) for controlling an action time of the ultra-high frequency generating unit to control drying time of the welding electrode.
Patent KR-20020074299-A (KR)
Title: system and method adult form ball plastick of oil intense heat and high temperature
Inventor: LEE BOO RAK
IPC: B29C67/00
Filed: 2001-03-20
Abstract: PURPOSE: A method for forming a plastic ball for an oil for a high temperature and heat and a system thereof are provided to reduce an error of a volume by passing a plastic ball over an oil of a high temperature and pressure and forming a ball having a desired size. CONSTITUTION: An oil pressure ball former(10) includes an upper heating zone(10a) of 100 300°C and a lower cool zone(10b) of 30 100°C. A preheater(12) is installed at a circumference of an input pipe(11) and preheats a plastic ball. Roll baskets(13a,13b) are installed at an upper end .of the oil pressure ball former(10) and provide the plastic ball(30) from the input pipe(11) little by little. Roll baskets(13c,13d) is located at a lower end of the oil pressure ball former(10) and receives a formed plastic ball(30). A controller(16) controls a power, a temperature, and a pressure of a thermal line(17). One side pipe line of a cooling tank(18) is connected to a cooling pipe(19) of the cool zone(10b).
Patent KR-20020076349-A (KR)
Title: Water pump
Inventor: OH CHANG SEOK
IPC: F01P5/12
Filed: 2001-03-28
Abstract: PURPOSE: A water pump for a cooling system of a vehicle is provided to improve the performance of the water pump by minimizing the back flow of coolant generated from a high pressure side to a negative pressure side in a gap between an impeller of the water pump and a cylinder block. CONSTITUTION: A rotary shaft(23) is installed in a pump housing(21). A plurality of blades(26) are radially formed at an impeller(22) installed at one side of the rotary shaft(23). A circular cap(27) prevent the leakage of coolant in a gap between a cylinder block(40) and the blades(26). A through hole(28) is formed at the center of the cap(27). A cylinder(30) is formed at one side of the cap(27) to extend the through hole(28). A ring-shaped seat(41) is formed at the cylinder block(40) to contain the cylinder(30).
Patent KR-20020079086-A (KR)
Title: Controller
Inventor: HAN YEONG SU
IPC: G01R1/04
Filed: 2001-04-13
Abstract: PURPOSE: A measuring instrument is provided to prevent a water leakage phenomenon generated from a combination part between a housing and a front case by improving a combination structure of the housing and the front case. CONSTITUTION: A plurality of guide holes(10) are formed on both sides of a housing(3) of a main body(1). A hanger portion(11) is formed at a rear portion of the guide hole(10). A plurality of projections(12) are formed on an upper portion and a lower portion of an inner side of a front case(3). A printed circuit board is fixed on a front case(3). The front case(3) is combined with the housing(2). A water leakage phenomenon is not generated from a combination part between the housing(2) and the front case(3) since the guide holes(10) are formed at a rear side of the combination part. The hanger portion(11) of the guide hole(10) is formed by a rounded shape.
Patent KR-20010098623-A (KR)
Title: 섀도 마스크의 세정 방법 및 세정 장치
IPC: H01J9/14
Filed: 2001-04-16
Abstract: 초음파 발진기로부터 섀도 마스크(shadow mask)로 향하여 초음파를 발진시키고, 초음파에 의해 섀도 마스크에 부착된 이물(異物)을 제거하며, 섀도 마스크를 세정한다. 초음파 발진기로부터 섀도 마스크로 향하여 발진된 초음파의 일부를 초음파 반사체에 의해 섀도 마스크로 향하여 반사시키고, 섀도 마스크에 조사한다.
Patent KR-20010098812-A (KR)
Title: 플라즈마 처리 시스템에서 반응 가스 온도를 감소시키는능동-냉각 분배판
IPC: G03F7/42
Filed: 2001-04-24
Abstract: 프로세서 챔버 벽(53) 및/또는, 시스템으로써 웨이퍼(18)를 처리하는 동안에 동작 온도를 감소시키는 완전한 냉각 통로(80, 156)를 갖춘 가스 분배 또는 조절판 (54)을 구비한 프라즈마 처리 시스템(10)이 제공된다. 냉매(冷媒)의 유입구(158, 82)와 유출구(160, 86)는 냉각 통로에 접속되어 냉각 통로를 통하여 냉매의 순환을 가능하게 한다. 챔버 벽(53)과, 가스 분배 또는 조절판(54)은 저합금 양극처리된 알루미늄으로 구성되고 냉각 통로는 그 내부를 직접 가공하는 것이 바람직하다. 냉매는 액체(예로서, 물) 또는 가스(예로서, 헬륨 또는 질소) 중 어느 것이라도 된다. 조절판(54)은 플랜지(78)로써 둘러싸인, 통상적으로 평면상(狀)이고, 개구(開口)가 있는 가스 분배 중앙부(74)를 포함하고, 그 모두에는 냉각 통로가 연장된다. 챔버 벽(53)의 냉각 통로와 가스 분배 또는 조절판(54)의 냉각 통로는, 단일의 냉매 순환 시스템을 공유할 수 있도록 서로 통하게 할 수도 있다. 또 다른 방법으로는, 챔버 벽(53)의 냉각 통로와 가스 분배 또는 조절판(54)의 냉각 통로는, 각각에 대하여 독립적인 순환 시스템(가스 또는 액체)을 구성하도록 서로 통하지 않게 함으로써, 독립적인 온도 제어 및 개별적인 흐름 제어를 가능하게 할 수도 있다. 동작에 있어서, 챔버 벽 냉각 통로(156)의 냉매는 대략 15℃-30℃의 범위 내로 유지되고, 가스 분배 또는 조절판의 냉각 통로(80)의 냉매는 대략 15℃-80℃의 범위 내로 유지된다. 주기적으로, 하측 조절판은 250℃ 이상에서 번갈아서 동작하여, 그렇지 않은 경우 낮은 동작 온도(예로서, 15℃-80℃)에서, 표면상(上)에 농축되어서잔류하는 처리 잔류물을 조절판의 표면으로부터 제거할 수도 있다.
Patent KR-20020082929-A (KR)
Title: A folding fan with ribs made of double strips of bamboo
Inventor: JANG SANG HO
IPC: A45B27/00
Filed: 2001-04-24
Abstract: PURPOSE: A bamboo fan is provided to minimize the contamination and tearing of Korean paper by preventing the exposure of the Korean paper in no use. CONSTITUTION: The bamboo fan comprises a pair of symmetric semi-circular outer rods(2), the outer surface of the rod being formed with knars(21) and the inner surface thereof being formed with an insertion groove(22); a fixing member(3) to be inserted into the inner grooves of the outer rod, the fixing member being formed with a hinge insertion recess(32); a plurality of fan-ribs(4) inserted into the outer rod in perpendicular to an incision direction of the outer rod; a hinge(7) penetrating the fixing member and the fan ribs; and Korean paper disposed to the upper side of the fan ribs.
Patent KR-20020084849-A (KR)
Title: Method for forming a micro-pattern and micro-channel by using a material having a solvent absorbability
Inventor: KIM YEON SANG
IPC: H01L21/28
Filed: 2001-05-02
Abstract: PURPOSE: A method for forming a fine pattern and a fine channel by using a material for absorbing a solvent is provided to form uniformly the fine pattern and the fine pattern of constant sizes by using a solvent absorbing material. CONSTITUTION: An arbitrary pattern is formed on a substrate(102) by performing an etch process. A low dielectric material is formed on the substrate(102) by using a spin coating method with a low dielectric material precursor solution. An absorbing plate for absorbing a solvent is adhered on a surface of the low dielectric material. The substrate(102) is turned up. The solvent of the low dielectric material is absorbed by the absorbing plate. A channel(108/1,108/2) is formed on an intaglio part of the arbitrary pattern of the substrate(102). The low dielectric material is used as a channel cover(104). The channel cover(104) is solidified by performing a thermal process.
Patent KR-20020088210-A (KR)
Title: Pda virtual desktop
Inventor: CHO BEOM UNG
IPC: G06F15/02
Filed: 2001-05-18
Abstract: PURPOSE: A virtual desktop for a PDA(Personal Digital Assistant) is provided to expand the market of the PDA by activating the use of a PDA phone and making the PDA easily applied to the everyday life, to lead the era of the popularized PDA, to bridge the wireless Internet era, and to maximize the usability of the PDA by connecting the PDA with a PC. CONSTITUTION: A virtual keyboard is realized by using a PC keyboard directly as a PDA character input unit. A virtual mouse is realized by using a PC mouse directly as a PDA pen pointer. The virtual sound is realized by using the sound system of the PC as the sound system of the PDA. A virtual screen is realized by using the screen of the PDA as an expansion screen of the PC. The virtual screen interlocks with the virtual mouse. A virtual messenger makes a message put into the PDA connected with the PC. The virtual messenger is controlled by the PC. A virtual multimedia player is realized by processing the visual part from the PDA and the sound part from the PC.
Patent KR-20010109157-A (KR)
Title: Ｍｏｓ 기반 이미지 센서 및 이를 위한 흑 레벨 신호를형성하는 방법
IPC: H01J27/00
Filed: 2001-05-30
Abstract: 본 발명은 CMOS 기반 활성 화소 이미지 센서 (CMOS-based active pixel image sensor) 에 사용되는 흑 레벨 신호 (black-level signal) 발생 회로에 대한 것이다.    이러한 흑 레벨 신호 발생 회로는 항상 일정한 레벨의 흑 레벨 신호를 제공한다.    흑 레벨 신호 발생 회로는 유효 화소 배열을 형성하는 임의의 하나의 화소 및 상기 화소로부터 신호를 판독하기 위한 임의의 하나의 판독부와 회로 구성에 있어서 동일하다.    광 다이오드는 리셋 상태로 유지된다.    흑 레벨 신호 발생 회로에 포함된 MOS 트랜지스터에 대응하는 임의의 하나의 화소 및 임의의 하나의 판독부에 있는 MOS 트랜지스터는 '온/오프' 상태로 되고, 흑 레벨 신호 발생 회로에 포함된 MOS 트랜지스터 모두는 '온' 상태로 유지된다.    따라서 흑 레벨 신호 발생 회로는 빛이 유효 화소들에 입사되지 않을 때 제공되는 화소 신호와 레벨이 동일한 흑 레벨 신호를 일정하게 생성할 수 있다.
Patent KR-20020094217-A (KR)
Title: Unity brake performance tester
Inventor: SONG MIN HO
IPC: G01L5/28
Filed: 2001-06-04
Abstract: PURPOSE: An integrated brake performance test apparatus is provided to accurately analyze electrical performance of a product by using accurate data obtained through the integrated brake performance test. CONSTITUTION: An integrated brake performance test apparatus, comprises a testing unit having a plurality of pressure gauges(115,133,134,129) and load cells(128,132) for testing braking performance and leakage; and a control unit for controlling the testing unit to perform test, and judging brake performance in accordance with the result of test output from the testing unit. The testing unit includes a braking state testing part(110) for testing braking state of the brake device; a parking brake state testing part(120) for testing operating state of parking brake; and a leakage testing part(140) for testing leakage of brake device.
Patent KR-20020092702-A (KR)
Title: Grade control apparatus of display set for tapestry
Inventor: KIM SANG UK
IPC: H04N5/655
Filed: 2001-06-05
Abstract: PURPOSE: An apparatus for fixing a display to a ceiling and adjusting the angle of the display is provided to easily fix the display to the ceiling and easily control the angle of the fixed display. CONSTITUTION: An apparatus for fixing a display to a ceiling and adjusting the angle of the display includes a bracket(12) attached to the ceiling, a variable-length support bar(16,18) attached to the ceiling bracket, and an adjustment bracket(22) whose horizontal angle is adjusted, connected to the support bar. The apparatus further includes a display attachment bracket(24) one end of which is combined with the adjustment bracket, a bracket connection plate(26) one side of which has a gear(30), attached to a predetermined portion of the display attachment bracket, and an angle adjustment screw engaged with the gear to adjust the vertical angle of the display.
Patent KR-20010110356-A (KR)
Title: 반사형 액정 표시 소자용 기판
IPC: G02B5/08
Filed: 2001-06-07
Abstract: 종래 기술에 비하여 적층 수가 적어 보다 짧은 시간 내에 형성할 수 있는 동시에 가시광 영역에서 원하는 평탄도의 광학특성을 안정적으로 얻는 것이 가능하며, 더욱이 반사 및 투과에 의한 착색의 발생을 방지할 수 있는 유전체 다층막 (반사 미러)을 구비한 반사형 액정 표시 소자용 기판이 제공된다. 반사 미러는, 투명기판 상에 소정 수의 고굴절율의 제1 투명막 및 저굴절율의 제2 투명막을 교대로 적층하여 형성된다. 제1 투명막 및 상기 제2 투명막 중 적어도 한쪽은, 투명기판으로부터 멀어짐에 따라 막의 두께가 점진적으로 증가하거나 점진적으로 감소하도록 배치된다.
Patent KR-20010112643-A (KR)
Title: 투영 광학계, 노광 장치 및 그들의 제조 방법
IPC: H01L21/027
Filed: 2001-06-13
Abstract: 다른 수차를 실질적으로 발생시키지 않고, 평행 평면 형상의 보정 부재의 비교적 적은 가공량으로 잔존 수차를 양호하게 보정할 수 있는 투영 광학계를 제공하는 것이다. 
     제 1 면(M)의 상을 제 2 면(W)에 투영하는 투영 광학계(PL)에 있어서, 제 1 면과 제 2 면 사이의 광로중에 설정된 제 1 보정 부재(C1)와, 제 1 보정 부재와 제 2 면 사이의 광로중에 설정된 제 2 보정 부재(C2)를 구비하고 있다.  제 1 보정 부재의 적어도 한쪽의 면 및 제 2 보정 부재의 적어도 한쪽의 면은, 투영 광학계에 잔존하는 적어도 한 종류의 잔존 수차를 보정하기 위한 소요의 형상으로 각각 가공되어 있다.
Patent KR-20030004565-A (KR)
Title: Assistant stepper for a emergency door of buses
Inventor: HONG JONG HWA
IPC: B62D25/22
Filed: 2001-07-05
Abstract: PURPOSE: An auxiliary step is provided to improve the safety and the convenience of passengers by quickly and safely getting off a bus. CONSTITUTION: An emergency exit is formed in the back side of a bus(B). An auxiliary step(200) comprises two body rods(210), many stepping plates(220), stepping plate links(230) and first gear portions. The body rods contain many moving grooves. The stepping plates(220) are hinged with the body rods. The stepping plate links guide the stepping plates by combining with the stepping plates and inserting in the moving grooves. The first gear portions contain gears by combining with the body rods. Two moving portions(300) are combined with the body rods and equipped with second gear portions(310). A storing space(400) is movable horizontally by locating under the emergency exit and storing the auxiliary step and the moving potions. A control unit comprises a first driving motor, a second driving motor, a right driving relay, a reverse driving relay and a time relay. The first driving relay and the second driving relay rotate the auxiliary step by gearing with the first gear potions. The switch is turned on/off by a user's control. The right driving relay supplies power to drive the first driving motor and the second driving motor right when the switch is on. The reverse driving relay supplies power to drive the first driving motor and the second driving motor reversely when the switch is off. A time relay supplies power to the first driving motor after supplying power to the second driving motor when the right driving relay receives power and supplies power to the second driving motor after supplying power to the first driving motor when the reverse driving relay receives power. By quickly and safely getting off a bus, the safety and the convenience of passengers are improved.
Patent KR-20030008056-A (KR)
Title: Bridge supporting elastic strut
Inventor: CHOI JUN HYEOK
IPC: E01D19/04
Filed: 2001-07-16
Abstract: PURPOSE: A flexible fulcrum for supporting a bridge is provided to simply replace a flexible body of the fulcrum with new one even when lifting a little the fulcrum by adopting improved construction of the fulcrum. CONSTITUTION: The fulcrum comprises a bottom base plate(3) to be fixed to a pier of the bridge; a wedge(11) to be secured to the base plate(3) by means of wedge fixing bolt(12); a flexible body(6) located inside the wedge(11) and secured by the wedge; and a top base plate(7) positioned above the flexible body(6). The bottom base plate(3) includes a tap to receive the bolt(12) to fix the wedge(11). The wedge is secured to the base plate(3) with the bolt(12) by only a simple bolting process and prevents bending state caused by welding heat. The wedge(11) is easily replaced by a new wedge. Also, the flexible body(6) is changed by only lifting the top plate of the bridge.
Patent KR-20030008854-A (KR)
Title: Method for detecting the optimal writing power of an optical disc
Inventor: KO BO HYEONG
IPC: G11B7/0045
Filed: 2001-07-20
Abstract: PURPOSE: A method for optimum power control of an optical disc is provided to detect and store an optimum power value for a first speed in advance as an analog audio signal input is detected while power-on, thereby carrying out the first speed recording without any delay as requested. CONSTITUTION: A method for optimum power control of an optical disc includes the steps of checking whether an audio signal is input from the outside to an input terminal as power is supplied to an optical disc device(S10-S20), carrying out the optimum power control for a first speed to detect an optimum power value for the recording at the first speed(S21), and storing the detected optimum power value to a memory(S22).
Patent KR-20030013163-A (KR)
Title: Shifter of seat for bus
Inventor: KIM MUN JIN
IPC: B60N2/07
Filed: 2001-08-07
Abstract: PURPOSE: A device for moving a seat for a bus is provided to facilitate comfortable and pleasant traveling by expanding spaces among passengers. CONSTITUTION: A device for moving a seat for a bus comprises a main frame(10), a seat cushion frame(13), a seat rail unit, and a locking device. The main frame is longitudinally formed to mount a seat and is fixed on a support bracket(12) with fixed seat legs. The seat cushion frame is integrally coupled with cushion brackets(14) fixed on both sides of a seat to support and fix a seat cushion. The seat rail unit is installed at the lower end of the seat cushion frame so that the seat cushion frame can slide right and left. The locking device is formed in the longitudinal direction of upper rails(21) of the seat rail unit and the locking device constrains the right and left movements of the seat cushion frame. The space among passengers can be expanded through control of the seat gap and therefore, comfortable and pleasant traveling is possible.