baber/WOPTO huggingface dataset:
Patent KR-20010016368-A (KR)
Title: Fried-chicken for powder
Inventor: JANG KWAN SUN
IPC: A23L23/00
Filed: 2000-12-06
Abstract: PURPOSE: A powder product for fried chicken comprising corn flour, soy peptide, Guar gum, xanthan gum and oleoresin without garlic is provided to serve a crisp and soft taste of fried chicken. CONSTITUTION: The powder includes 45-50wt% of wheat flour, 38-42wt% of corn starch, 3-4wt% of refined salt, 3-4wt% of monosodium L-glutamate, 0.5wt% of corn flour, 0.1wt% of Guar gum, 0.15wt% of xanthan gum, 0.5wt% of black ground pepper, 1.5wt% of white ground pepper, 0.3wt% of powdered hot pepper, 0.5wt% of cinnamon powder, 0.4wt% of powdered onion, 0.02wt% of marjoram oil, 0.2wt% of whey powder, 0.5wt% of yolk powder, 1.5wt% of soy peptide, 0.2wt% of soy bean oil, 0.01wt% of paprika oleoresin and 0.05-0.06wt% of Capsicum oleoresin.
Patent KR-20020045386-A (KR)
Title: Detergent dispersing method for washing machine
Inventor: LEE DEUK HUI
IPC: D06F39/02
Filed: 2000-12-08
Abstract: PURPOSE: A method for dispersing detergent of a washing machine is provided to disperse detergent evenly using minimum amount of centrifugal force, to increase a washing efficiency by sufficiently dissolving detergent, and to increase reliability of the washing machine. CONSTITUTION: A method for dispersing detergent of a washing machine includes the steps of sensing an amount of clothing, inserting detergent corresponding to the amount of clothing, rotating a wash tub to a rotation speed set by a user to obtain centrifugal force to sufficiently disperse the inserted detergent, stopping the rotation of the wash tub and supplying water to a water level corresponding to the sensed amount of clothing.
Patent KR-20020047827-A (KR)
Title: Rear trail arm mounting structure
Inventor: KANG JEONG HO
IPC: B62D25/20
Filed: 2000-12-14
Abstract: PURPOSE: Structure of a rear trail arm of a vehicle is provided to obtain durability against the shock and vibration transmitted from the outside by connecting the flange of an upper reinforcing panel to the upper portion of a rear floor. CONSTITUTION: In the rear tail lower mounting structure, the flange of an upper reinforcing panel is extended to the upper portion of a rear floor. The flange of the upper reinforcing panel is fixed by welding. A rear tail arm lower mounting(10) is added to the inside of a side sill inner reinforcing panel(2). The rear tail arm lower mounting is attached to the lower portion of the side sill inner reinforcing panel. The rear tail arm lower mounting is attached to the lower front face of a rear floor side member(4) along between the rear floor side member and a rear tail arm(5). Both ends of a rear tail arm mounting reinforcing panel(20) are extended to the lower portion of a rear floor panel.
Patent KR-20020049651-A (KR)
Inventor: KIM SEONG TAEK
IPC: B60R19/18
Filed: 2000-12-19
Abstract: PURPOSE: A bumper for a vehicle is provided to absorb preferably an impact owing to a collision of the vehicle with the vehicle as well as to reduce an injury of a walker due to a collision of the vehicle with a human. CONSTITUTION: A bumper for a vehicle comprises a bumper beam(1), a bumper cover(2), a lever supporting bar(3), a handling lever(9), a locking lever(10) and an impact absorber(13). The lever-supporting bar(3) is installed at the bumper beam(1), and supports an impact-sensing lever(7). A connecting bar(8) is installed at a central portion of the lever supporting bar. a center of the handling lever is supported at the bumper beam, and one end thereof is contacted at the impact sensing lever. The center of the locking lever is supported at the lever-supporting bar, and the locking lever is locked at the other end of the handling lever. The impact absorber(13) is fixed at the bumper beam and the bumper cover, connected at the connecting bar, and locked at the locking lever.
Patent KR-20020053623-A (KR)
Title: apparatus for ejecting oil automatically to increase cooling effect
Inventor: KANG HO IK
IPC: B21B37/00
Filed: 2000-12-27
Abstract: PURPOSE: An automatic oil coating apparatus is provided to prevent defects of cold rolled products and oxidation of the welding part of a cold rolled strip by spraying misted oil onto the welding part, thereby forming a coating film on the welding part of the strip so that it is cooled according to a set value of thermometer. CONSTITUTION: The automatic oil coating apparatus for increasing cooling effect on the welding part of a cold rolled strip comprises air cylinders(11,11-1) equipped with a pair of operating rod parts which are welded onto upper parts of a pair of Y shaped guides(12,12-1); a contact roll(14) which is installed between a pair of rectangular bearing blocks(13,13-1) that are welded to the lower parts of the guides(12,12-1); driving rods(17,17-1) which are spaced apart from the contact roll(14) in a certain distance and inserted into holes formed on the lower surfaces of worm gear jacks(16,16-1); insulating blocks(18,18-1) which are mounted on the lower parts of the worm gear jacks(16,16-1) of the driving rods(17,17-1); long pipe shaped upper and lower nozzles(19,19-1) mounted between the insulating blocks(18,18-1); an oil storage tank in which oil is stored to spray oil onto the nozzles(19,19-1); an agitator attached to the lower part of the oil storage tank; and a high voltage cable which is extended from a power supplier attached to the side surface of the agitator and inserted onto the side surface of the oil storage tank.
Patent KR-20020056326-A (KR)
Title: Damper supporting device for washing machine
Inventor: KIM JONG GIL
IPC: D06F37/20
Filed: 2000-12-29
Abstract: PURPOSE: A damper supporting device of a washing machine is provided to detachably form a damper supporting element with respect to a fixing element for the deformation into various shapes. CONSTITUTION: A damper supporting device of a washing machine includes a fixing element(40) fixed to a top surface of an outer casing, a damper supporting element(50) detachably mounted on the fixing element, and a damper(60) supported by the damper supporting element, wherein the fixing element is formed with a securing hole(42) and a coupling hole(52), the damper supporting element is formed with a securing part(54) to be secured in the securing hole and a coupling boss(56) to be inserted into the coupling hole, the securing part formed in the shape of concave hemisphere with a mounting hole in the center, and the damper is formed with an upper shaft(64) inserted into to mounting hole and a damper pivot(62) secured on a top surface of the securing part.
Patent KR-20020056565-A (KR)
Title: Three-dimensional structure of human derived apoptotic factor and receptor thereof by X-ray chrystallography and TRAIL deletion mutant protein
Inventor: CHA SEON SIN
IPC: C12N15/12
Filed: 2000-12-29
Abstract: PURPOSE: Provided are a three-dimensional structure of TRAIL-sDR5 complex of a human derived apoptotic factor and a receptor thereof by X-ray crystallography and TRAIL(TNF Related Apoptosis Inducing Ligand) deletion mutant protein. CONSTITUTION: TRAIL-sDR5 complex is prepared by mixing TRAIL protein of SEQ ID NO:1 and sDR5 protein of SEQ ID NO:2. It can be crystallization method comprises the steps of: injecting a solution consisting of 16% of polyethyleneglycol 3000, 0.05M of sodium acetate(pH 4.5), 0.22 M of sodium acetate and 0.6M of sodium chloride into a well; mixing the precipitation solution and protein solution in a mixing ratio of 1:1 on the surface of a cover slip; and covering the well with the cover slip to crystallize the protein.
Patent KR-20010021903-A (KR)
Title: 동적 3차원 비젼 인스펙션 시스템
IPC: G01N21/88
Filed: 1998-07-14
Abstract: 8개의 광 이미지가, 2개의 광 카메라로부터 출력된 하나의 이미지 프레임상에 즉각 기록되는, 비젼 인스펙션 시스템이 제공된다. 인스펙션 윈도우 근처에 위치되며, 서로 이격된 4개의 인스펙션 영역을 조광(52)할 수 있도록 광원(28)이 제공된다. 빛에 의해 반사된 2개의 광 신호(54)가 4개의 인스펙션 영역 각각으로부터 발산되고, 다른 관측 각도에 있는 광학적 영역(36)으로부터 바람직하게는 하나의 초점으로부터 2개의 광 신호(54)가, 2개의 광학적 카메라로 향한다. 광 인도 부재는 다양한 영역으로부터 광 신호를 수신하고, 각각의 카메라에 빛이 향하도록 한다. 광 인도 부재는 다양한 사이즈의 부품에 적합하도록 선택적으로 조절할 수 있다. 각 부품의 광학적 인스펙션은 각각의 카메라에 의해 기록되는 한 프레임인, 2개의 프레임상에, 8개의 광학적 이미지를 기록하는 것에 의해 즉각적으로 수행된다.
Patent KR-20010082498-A (KR)
Title: 열역학 사이클을 이용한 엔트로피 전달 방법 및 그 장치
IPC: F02G1/04
Filed: 1998-09-23
Abstract: 본 발명은 엔트로피의 전달을 위한 방법 및 장치에 관한 것이며, 이로 인해 가압된 용기 내에 상이한 압력에서 밸브를 사용하는 작동 물질을 주기적으로 변화시키고, 압축 장치를 사용하거나 사용하지 않는 재생기에 의해 정해지는 부분 체적을 주기적으로 변경시킴으로써 주기적인 사이클 프로세스가 형성된다.  상이한 압력에서 작동 물질을 교환함으로써 기계적 에너지를 변환하는 것은 열역학 프로세스를 열 에너지 이동에 결합시킴으로써 다른 부분 시스템을 통합하고, 적어도 하나의 작동 물질의 유동 온도를 대체로 변화시키는 것을 용이하게 하며, 열 에저지 저장소 또는 간단하고 효과적인 태양열을 광학적으로 집중시키는 집광 시스템, 반투명의 단열재 및 반투명의 단열재에 대한 횡단 유동이 효과적인 방법으로 조합된다.  본 발명은 태양 에너지 또는 열원용으로 사용될 수 있고, 지역 펌핑 능력의 요구에 부응하며, 적어도 하나의 물질에 대하여 기계적 작용, 전기 에너지, 가열, 냉각, 세정 또는 분리, 및 기계적 또는 물리적 변화를 제공한다.
Patent KR-20010024384-A (KR)
Title: 폴리페놀 공중합체를 함유하는 조성물 및 이의 제조 방법
IPC: C08G12/46
Filed: 1998-09-29
Abstract: 본 발명은 표면 피복제로서 유용한 폴리페놀 중합체를 제조하는 방법으로서, 유기 용매의 부재하에 수행되며, 폴리페놀 중합체는 페놀 중합체 또는 공중합체, 아민, 및 알데히드, 케톤 또는 이들의 혼합물의 반응 생성물이며, 이로부터 생성된 수용액이다.
Patent KR-20010031278-A (KR)
Title: 폴리우레탄 조성물
IPC: C08L75/04
Filed: 1999-08-19
Abstract: 본 발명은 폴리우레탄에, 
     (A)장애페놀계 산화방지제와 
     (B)하기 일반식(I)로 표시되는 아미드류 
     （화학식 I） 
     R 1 -CONH 2   
     (식중 R 1 은 탄소수12~21의 알킬기를 나타낸다.) 
     를 배합하여 이루어지는 것을 특징으로 하고, 산화질소성가스 뿐만 아니라, 열에 대해서도 뛰어난 변착색방지성을 나타내는 폴리우레탄 조성물을 제공하는 것이다.
Patent KR-20010033301-A (KR)
Title: 일체식의 전기적 및 기계적 패키징을 사용한 실리콘마이크로 가공된 가속도계
IPC: G01P15/10
Filed: 1998-12-16
Abstract: 일체식 센서 패키지(10)가 저온으로 공동소결된 세라믹 어셈블리 기술 및 이의 제조방법.
Patent KR-20010033783-A (KR)
IPC: C07C51/43
Filed: 1999-02-23
Abstract: Phthalic acid anhydride is recovered from a gas stream containing phthalic acid anhydride vapors by passing the gas stream upwardly through a vertical tube so that the gases expand at the orifice at the upper end of the tube and mix with granules entrained above the tube by fluidizing gas of a fluidized bed of phthalic acid anhydride granules around the tube. The tube, kept free from phthalic acid anhydride granules and the fluidized bed, is indirectly cooled.
Patent KR-20010033941-A (KR)
Title: 단량체 인슐린 유사체의 투여 방법
IPC: A61K9/10
Filed: 1999-01-07
Abstract: 본 발명은 흡입에 의한 인슐린 유사체의 투여 방법, 흡입에 의해 인슐린 유사체를 투여함으로써 당뇨병을 치료하는 방법, 및 흡입에 의해 인슐린 유사체를 투여함으로써 과혈당증을 치료하는 방법에 관한 것이다.
Patent KR-20010040644-A (KR)
Title: 접착제 조성물 및 그의 전구체
IPC: C09J163/00
Filed: 1999-01-13
Abstract: 본 발명은 페녹시 수지, 에폭시 수지 및 디시안디아미드를 포함하며, FPC 보호 필름용 접착 필름으로서 VO 규격을 만족시키는 난연성 및, 또한 우수한 수행능 (접착성 및 치수 안정성과 같은)을 갖는 접착제 조성물을 제공한다.  접착제 조성물의 총량을 기준으로 브롬화 에폭시 수지 및 오산화 안티몬의 콜로이드 입자의 총량이 13 내지 60 중량%인, 에폭시 수지는 브롬화 에폭시 수지를 포함하고, 수지 성분은 분산된 오산화 안티몬의 콜로이드 입자를 포함한다.
Patent KR-20010043373-A (KR)
Title: 후막형 서멀 프린트 헤드
IPC: B41J2/335
Filed: 1999-04-22
Abstract: 후막형 서멀 프린트 헤드는, 긴 가장자리부(1a)를 갖는 기판(1)과, 상기 긴 가장자리부에 따라 뻗은 부분 글레이즈층(10)과, 상기 부분 글레이즈층상에 형성된 발열저항체(11)와, 상기 발열저항체에 전기적으로 접속된 공통전극(12)과, 상기 발열저항체에 전기적으로 접속된 복수의 개별전극(13)을 구비하고 있다. 
     상기 공통전극은, 복수의 빗살형 이(12A)를 포함하고 있으며, 각 빗살형 이는, 폭이 좁은 선단부(12c)와 폭이 넓은 기단부(12d)를 갖고 있다. 
     각 개별전극은, 폭이 좁은 선단부(13d)와 폭이 넓은 중간부(13e)를 갖고 있다.
Patent KR-20020057719-A (KR)
Title: R omitted
Inventor: KWON HYUK BOK
IPC: G01B5/00
Filed: 2001-01-05
Abstract: PURPOSE: An R dresser without using a block gauge is provided to dress precisely, and to adjust the size accurately by checking a memory scale easily and simply with moving up and down. CONSTITUTION: An R dresser is manipulated by a hand. A memory is moved upward and downward. The R dresser is used without a block gauge. The R dresser is used for assembling more than 25 kinds of components. The new R dresser adjusts the size accurately with moving up and down. The size is checked conveniently and easily through the memory scale. The bore and the full diameter are processed accurately with using the R dresser without the block gauge through the memory scale.
Patent KR-20010035182-A (KR)
Title: The directly contact cooling system of chilliness accumutation process and heat absorption process using thermoelectric module
Inventor: KIM EUNG UK
IPC: F25B21/02
Filed: 2001-01-12
Abstract: PURPOSE: A direct contact type cooling system is provided to reduce equipment and maintenance cost, while reducing time required for cooling operation by employing an operation cycle for both cold accumulation and heat absorption. CONSTITUTION: A cooling system comprises a radiator device(100), a semiconductor thermoelement(200), and a mold(400) with a mold base(300) and which is made up of a material having a high heat conducting capability so as to fit to an object(500) to be cooled. The semiconductor thermoelement cools the mold attached to the object to be cooled, and the cooled mold absorbs heat from the object. Since heat from the object is not directly applied to the semiconductor thermoelement, it is possible to cool the object having a heat of which temperature is higher than the operation threshold temperature, through the use of the semiconductor thermoelement. The cooling action is performed by a cold accumulation process in which the semiconductor thermoelement cools the mold for a predetermined time period so as to accumulate cold air within the mold prior to a contact between a cooling device and an object to be cooled; and a heat absorption process for absorbing heat from the object through the direct contact between the cooling device and the object.
Patent KR-20020060548-A (KR)
Inventor: SEO KWANG YOUL
IPC: A24B15/16
Filed: 2001-01-11
Abstract: PURPOSE: A non-smoking aid obtained by drying and roasting leaves of dandelion and then rolling in paper is provided which assists persons to quit smoking while smoking like cigarettes. It is also harmless to the human body and promotes blood circulation and metabolism. CONSTITUTION: Leaves of dandelion(Taraxacum mongolicum H. MAZZ.) are collected, washed and dried. The dried dandelion leaves are finely cut, mildly roasted and then rolled in paper. It causes persons to feel the taste and flavor of tobacco without any additives.
Patent KR-20020065744-A (KR)
Title: The manufacturing method of kimchi spice distributable at the normal temperature
Inventor: YIM JA
IPC: A23B7/10
Filed: 2001-02-07
Abstract: PURPOSE: A process of preparing the subject Kimchi spice by maintaining a water activity thereof to be 0.80 or less is provided. Therefore, the Kimchi spice permits a user to easily prepare Kimchi with it without difficulty and problem as well as reducing costs related with distribution because it causes fermentation at normal temperature. CONSTITUTION: A mixture of 2.8kg glutinous rice and 27kg water is heated at 90deg.C for 30min in a steam kettle to produce paste, which is cooled at normal temperature and then frozen to 10deg.C or less at a refrigerator. Thus the obtained glutinous rice paste is well mixed with 28kg liquid type salt-fermented anchovy, 18kg onion, 2.8kg ginger, 4kg garlic, 14kg red pepper powder having a moisture content of 10% or less, 1.4kg sugar, 1kg MSG and 1kg spirit.
Patent KR-20020066885-A (KR)
Title: A manufacturing method of centrifugal pipe using polymer concrete
Inventor: CHO GYU U
IPC: C04B28/00
Filed: 2001-02-14
Abstract: PURPOSE: Provided is a process for producing a polymer concrete centrifugal pipe used for sewerage, which can maximize the productivity of the centrifugal pipe by shortening the gelation time to the utmost. CONSTITUTION: The process comprises the steps of: injecting a binding material into a mold(10) of the centrifugal pipe(20) and semi-curing to form an outer layer; injecting polymer concrete mortar to form a middle layer; injecting the binding material again to form an inner layer; rotating till the gelation; taking the gel state material out and curing. The velocity of the gelation is increased by injecting vortex hot air into the mold(10), wherein the vortex hot air is injected with the binding material or the mortar.
Patent KR-20020067141-A (KR)
Title: Apparatas for increasing rotary power
Inventor: RO SUNG WANG
IPC: F16C3/20
Filed: 2001-02-15
Abstract: PURPOSE: An apparatus for increasing rotating force is provided to reduce exhaust gas, increase output and reduce fuel consumption by increasing rotating force of rotary body. CONSTITUTION: An apparatus comprises a moment transmitting ring including a main body having a through hole, a first rod(112) formed longer at a side of the main body and a second rod formed shorter at the other side of the main body; a fluid transfer channel(700) communicated to an engine oil transfer channel(600) passing through a crank shaft; a hydraulic cylinder(800) having a piston rod with a press section including a rod which is fixed, through a bracket, to an end of a balance weight(6) of the crank shaft so as to move in a linear fashion by the hydraulic pressure; an elastic member(300) inserted to the piston rod; a retainer(500) arranged at both ends of the piston rod so as to prevent escape of the elastic member; and a stopper pin protruded from the surface of the balance weight, contacting the second rod.
Patent KR-20010088362-A (KR)
Title: Polymer removal
Inventor: SAHBARI JAVAD J
IPC: H01L21/027
Filed: 2001-02-26
Abstract: PURPOSE: Provided are compositions useful for the removal of polymeric material from substrates, such as electronic devices, and methods of removing such polymeric material. The compositions of the present invention are particularly suitable for removing polymer residues from advanced magnetic devices. CONSTITUTION: The composition includes one or more polar aprotic solvents, one or more polymer dissolution enhancing bases, and one or more corrosion inhibitors, wherein the composition is substantially free of hydroxylamine or hydroxylamine derivatives. The polar aprotic solvents are present in an amount of from about 20%wt to about 90%wt, based on the total weight of the composition. The polymer dissolution enhancing base comprises tetra(C1-C6)alkylammonium hydroxide, tetra(C1-C6)alkylammonium carbonate, tetra(C1-C6)alkylammonium acetate, tetra(C1-C6)alkylammonium citrate, tetra(C1-C6)alkylammonium silicate, or choline hydroxide.
Patent KR-20010096575-A (KR)
Title: Power management in a data processing system based on processor utilization
Inventor: ALLEN CHESTER WINE
IPC: G06F1/32
Filed: 2001-02-26
Abstract: PURPOSE: A data processing system power management method and system are provided to decrease a current processor speed by responding to a current processor speed greater than a current situation in processor usage and increase a current processor speed by responding to a current processor speed smaller than a current situation in processor usage so that it can control the processor speed to satisfy the current situation in processor usage. CONSTITUTION: The method comprises steps of determining a current situation in processor usage by a percentage, i.e. with a range of 0 to 100(600), determining a current processor speed by a percentage, i.e. with a range of 0 to 100, where 0 corresponds to the slowest and 100 corresponds to the highest(602), determining a ratio of a current processor usage with respect to a current processor speed by comparing the percentage of the processor usage with that of the processor speed(604), in the case that the current processor speed is smaller than the current processor usage, increasing the current processor speed by one unit and then returning to the step 600(608), in the case that the current processor speed is larger than the current processor usage, decreasing the current processor speed by one unit and then returning to the step 600(606).
Patent KR-20020073879-A (KR)
Title: A call monitering method of telephone outputting call monitering signal in accordance with caller
Inventor: KIM SANG
IPC: H04M11/00
Filed: 2001-03-16
Abstract: PURPOSE: A call monitoring method of telephone outputting call monitoring signal in accordance with caller is provided to easily confirm the caller by receiving call monitoring contents mapped with each caller from an ECMS(Enhanced Call Monitoring System) server and outputting an other call monitoring signal according to the caller when performing a telephone conversation. CONSTITUTION: A user sets a call monitoring signal outputted through a real telephone from caller ID including call monitoring contents transmitted from an ECMS server(S201). In case that a calling signal is inputted to a telephone(S202), a calling signal confirming unit recognizes the caller ID corresponding to the calling signal inputted from a calling information recognizing unit(S203). A control unit retrieves whether a telephone number corresponding to the recognized caller ID is stored in a database(S204). If the telephone number corresponding to the recognized caller ID is stored in the database, the control unit outputs contents(call monitoring signal) set by the user among the call monitoring contents included in the caller ID(S206).
Patent KR-20020073951-A (KR)
Title: A device of a gold plating for a lead frame
Inventor: JUNG UL YUN
IPC: C25D17/00
Filed: 2001-03-17
Abstract: PURPOSE: An apparatus for plating gold on an electronic terminal is provided in which gold is sufficiently plated on a part of the electronic terminal where gold plating is required while gold is not plated on a part where gold plating is not required so that plating cost is saved. CONSTITUTION: The apparatus for plating gold on an electronic terminal comprises a gold supply pipe(1) one side end of which an inflow port(2) is formed so that a gold molten solution is flown into through the inflow port, on the other end of which a positive electrode rod(4) is formed to connect a positive electrode, and on the upper part of which a plurality of discharge holes(6) are formed with spaced apart from each other in a certain distance to discharge the gold molten solution; a fibrous material(7) which is installed on the outer side of the gold supply pipe so that the fibrous material covers the gold supply pipe as a whole, and through which the gold molten solution passes; and an electrode rod which is installed in front of the gold supply pipe so that the electrode rod contacts the electronic terminal.
Patent KR-20020074698-A (KR)
Title: Method and apparatus for injecting cooling fuel for automobiles
Inventor: CHAE SEUNG JIN
IPC: B60K15/00
Filed: 2001-03-21
Abstract: PURPOSE: A cold fuel supplier and its method for vehicle are provided to prevent the generation of exhaust gas and the reduction of engine output by a vapor lock. CONSTITUTION: A fuel supply line comprises a cold fuel supply line(21), a cooling fan(60) and a bypass line(23). The cold fuel supply line contains a wide surface area and a first solenoid valve(22) to increase the thermal exchange efficiency. The cooling fan blows cold wind toward the cold fuel supply line. The bypass line is directly connected with a pressure controller(40) and contains a second solenoid valve(24). Thereby, the vapor lock is prevented.
Patent KR-20020076922-A (KR)
Title: Method of load control for CVT tractor
Inventor: HWANG HO JUN
IPC: F16H63/00
Filed: 2001-03-31
Abstract: PURPOSE: A working load control method of a continuously variable tractor is provided to control speed of the tractor by calculating load applied to an engine with measuring RPM(revolution per minute) of the engine, and to improve working efficiency by optimizing traveling state of the tractor. CONSTITUTION: A tractor is composed of a speed setting lever(15), an electronic hydraulic control unit(26), a speed difference calculating unit(19), a load signal calculating unit(20), and a signal integrating unit(21). The amplifying rate is zero within the no-load range not applying load to the engine, and vehicle speed is not changed according to signals of little speed difference. Load is applied to the engine within the deceleration range, and a signal proportional to load torque is output to the signal integrating unit. The engine is stopped quickly by the load torque within the sudden deceleration range, and the tractor is decelerated promptly with increasing the amplifying rate. Working efficiency is improved with regulating speed of the tractor by adjusting rpm of the engine according to load.