baber/WOPTO huggingface dataset:
Patent JP-H0429521-A (JP)
Title: Overcurrent protective circuit for pwm power converter
Inventor: KAWABATA MAKOTO
IPC: H02H7/122
Filed: 1990-05-24
Abstract: PURPOSE:To protect respective switching elements reliably by detecting overcurrent to be fed from a smoothing capacitor and providing signals for stopping the switching operation to a voltage type converter and a voltage type inverter. CONSTITUTION:An overcurrent detector is eliminated and a capacitor current detector 24 is connected in series with a smoothing capacitor 5. An overcurrent to be fed from the smoothing capacitor 5 due to short circuit of arms of a voltage type converter and a voltage inverter is detected instantaneously through a capacitor current detector 24. When the overcurrent exceeds an overcurrent set value Ip provided from an overcurrent setter 23, signals are provided to comparators 16 on the sides of the voltage type converter and the voltage type inverter in order to interrupt driving pulse supply to a switching element. Consequently, switching element of the voltage type converter 4 can be protected without requiring a fuse 3.
Patent JP-S6026928-A (JP)
Title: Optical control element
Inventor: KAWABATA AKIRA
IPC: B41J2/445
Filed: 1983-07-25
Abstract: PURPOSE:To prevent surely light leakage from an optical shutter part by providing a pair of polarizing plates which sandwich a transparent base plate formed with a thin film mask made of a metal which shields visible light on the transparent base plate via a transparent insulating film so as to cover the circumference in the prescribed part between the couple of counter electrode formed on the transparent base plate having an electrooptic effect. CONSTITUTION:A common electrode 11 is provided by a photolithography method on a PLZT flat plate 10 and 12 is likewise the electrode group for impressing voltage provided by a photolithography method. A thin film mask 13 is formed on the plate 10 and the transparent insulating film formed on the electrodes 11, 12 and is the thin film mask of the metal consisting of two layers of Cr and A having no overlap part with the electrodes 11, 12 used to allow transmission of light only through the necessary part. If a voltage is impressed to the electrode (b) among the electrode groups 12 when light is irradiated to said elements from a light source 16 provided behind a polarizer 14, the light is transmitted only through the required shutter part by the mask 13 owing to the electrooptic effect.
Patent JP-H02284728-A (JP)
Title: Production of double-pipe reducer pipe joint
Inventor: NISHINO MAKOTO
IPC: B21D39/04
Filed: 1989-05-30
Abstract: PURPOSE:To suppress the generation of wrinkle of an inside pipe and to improve the threshold of a pipe reducing by fitting a restrain pipe to the inner side of double pipes, integrating only the front end on a reducing side by welding to form triple pipes, the inside pipe of which is shortened on a pressing side, and then pressing only the outside pipe and the restraining pipe. CONSTITUTION:The restraining pipe 3 is fitted to the inner side of the double pipes mechanically joined with the outside pipe 1 and the inside pipe 2 of >=50 ratio between the outside diameter and thickness at the boundary. Only the front end on the drawing side of the outside pipe 1, the inside pipe 2 and the restraining pipe 3 is then integrated by the welding W. The triple pipes, the inside pipe 2 of which is shorter than the outside pipe 1 and the restraining pipe 3 on the pressing side, are thus formed. The triple pipes are reduced by pressing only the outside pipe 1 and the restraining pipe 3. Since the axial tensile load acts on the inside pipe 2, the circumferential stress necessary for deformation decreases and further, the generation of buckling is suppressed. The front end on the drawing side is cut after the pressing and the restraining pipe 3 is removed by pressing to form the double pipes. The reducer is finished by further cutting the two pipe ends.
Patent JP-S62293227-A (JP)
Title: Projection type display device
Inventor: ARIGA SHUJI
IPC: G09F9/00
Filed: 1986-06-12
Abstract: PURPOSE:To remove coloring of half tone display by optimizing the arrangement of TN liquid crystal light bulb polarizing plates to red, green and blue light beams. CONSTITUTION:A polarizing plate on the projection side is arranged in common with red, green and blue beams so that the absorbing axis 6 of the polarizing plate is almost parallel with the orientation axis 5 of liquid crystal molecules on a projection substrate. On the other hand, an incident polarizing plate is arranged so that the transmission axes for red, green and blue beams are set up like 1-3 and angular differences obtained by subtracting the twisted angles of the TN liquid crystal in respective TN liquid crystal light bulbs from angles formed by the transmission axes 1-3 and the absorbing axis 6 of the projecting polarizing plate in the twisted direction of the liquid crystal molecules are reduced in the order of red, green and blue. Consequently, the voltage/ transmissivity curves of red, green and blue components are made almost coincide with each other, so that colorless excellent half tone display can be obtained.
Patent JP-S6030883-A (JP)
Title: Sluice valve
Inventor: KANAMORI SHIYOUZOU
IPC: F16K47/02
Filed: 1983-07-27
Abstract: PURPOSE:To make a decrease in flow-passing energy and thereby prevent a noise from occurring, by installing a cutoff plate, making a plane surface orthogonal with a flow line, in a plug head, and also installing a multihole plate being almost paralleled with the cutoff plate, in the side of the latter in a juxtapositional manner. CONSTITUTION:At a lower end head part of a plug 20 situated in the central part of a straight-tubular valve inner hole 3a, there is provided with a cutoff plate 20b having a slightly smaller radius than that in the central part of the valve inner hole 3a in making its plane surface orthogonal with a flow line. In addition, at both sides for a flow line direction in this plate 20b, a multihole plate 20b in which plural small holes 20c are made up is installed in position between the cutoff plate 20b and itself side by side at a interval. In time of half- opening in the cutoff plate 20b, the flowing absorbed from these small holes 20c of the multihole plate 20d at the upstream side is spouted out of a clearance between the multihole plate 20d and the cutoff plate 20b so that flow-passing energy is naturally decreased.
Patent JP-H05329706-A (JP)
Title: Hole cutter
Inventor: OMI KATSUHEI
IPC: B23B51/05
Filed: 1992-05-28
Abstract: PURPOSE:To prevent a chattering phenomenon by preventing the parallel flow and confluence of chips during a cutting process, and controlling the vibration of a cutting edge. CONSTITUTION:In a hole cutter formed by fast sticking cutting edge bodies 4 to the tip part of a cylindrical body at regular intervals, the cutting edge 7 of the cutting edge body 4 is inclined in the direction of the width D of the cutting edge, and its rake angle is continuously increased or decreased from the most outside part of the cutting edge 7 to its most inside part, and moreover its inclining rate is changed at the about central part P of the cutting edge 7. Since the rake angle of the cutting edge 7 of the cutting edge body 4 changes continuously, and the discharging angle of chips coincides with the rake angle of the cutting edge 7, the chip occurring at each point of the cutting edge 7 is discharged outside without the occurrence of the confluence and parallel flow of the chips on account of the difference of the rake angle at each point. In addition, since the inclining rate of the cutting edge 7 changes at its about central part P to greatly change the rate angle, the chip is surely divided into small pieces at the about central part P.
Patent JP-S5473716-A (JP)
Title: Production of carboxylic ester
Inventor: TAMURA WATAHIKO
IPC: B01J23/56
Filed: 1977-11-17
Abstract: PURPOSE: An aldehyde and an alcohol are oxidized with molecular oxygen in the presence of a specific catalyst to produce a carboxylic ester with one step procedure in high yield and selectivity.  
     CONSTITUTION: An aldehyde such as propionaldehyde or methacrolein and an alcohol such as methanol are oxidized with molecular oxygene in the presence of a catalyst consisting of at least one of Pd and its compounds, at least one selected from T1 and Hg and their compounds at 0W100°C under atmospheric pressure to form the objective ester such as ethyl propionate or methyl methacrylate. The Pd compound is, e.g., its acetate, formate or sulfate, the T1 compound is e.g., its acetate, nitrate, thallous chloride, and the Hg compound is, e.g., its acetate, nitrate or oxide. The above catalyst can be supported on a carrier such as alumina, activited carbon or calcium carbonate or may be supported with each other. 
     COPYRIGHT: (C)1979,JPO&Japio
Patent JP-S5362591-A (JP)
Title: Probe vibration damping device
Inventor: KANAMORI TAKAHIRO
IPC: G01N29/44
Filed: 1976-11-17
Abstract: PURPOSE: To decrease damped wave, without lowering the wave receiving sensitivity of probe, by increasing impedance of the probe by the electrical method. 
     COPYRIGHT: (C)1978,JPO&Japio
Patent JP-S5469514-A (JP)
Title: Decarburization method in vacuum furnace
Inventor: OOMORI TSUGIHARU
IPC: C21C7/10
Filed: 1977-11-16
Abstract: PURPOSE:To manufacture high grade steel by sampling the carbon content of molten steel and charging mixed ore consisting of oxidized cpds. in an amt. needed for the reaction with the carbon so as to carry out decarburization while controlling the amt. of oxygen supplied to the steel. CONSTITUTION:The carbon content of molten steel is calculated by sampling the steel, and oxygen is charged into the steel in an amt. needed for the reaction with the carbon in the form of Fe2O3, Fe3O2, etc. to carry out decarburization. Since this method does not requir any special supply unit as compared with a conventional oxygen reaction system, the decarburization effect is simply shown.
Patent JP-H08321751-A (JP)
Title: Current clamping circuit
Inventor: DEIBUITSUDO JIEI ANDAASON
IPC: H03K5/007
Filed: 1995-05-11
Abstract: PURPOSE: To clamp a reference current with current by preparing a current clamping circuit including an addition node, adding a prescribed current difference to an input current signal and clamping the input current signal at a reference current signal. CONSTITUTION: An output current IO form a mutual conductance amplifier 305 is added to a current ISIG' by a node 345, and a current source 335 for the current ISIG' is a current for tracing a current source 110 for a current ISIG. An electric mirror image circuit is used for forming the current sources 335, 110 and the currents ISIG', ISIG are set up equal, and a change in the current ISIG can be reflected to a change in the current ISIG' as a mirror image. When an inverted CLPP signal is high, a switch 340 is closed, a current IREF and the current signal ISIG are sampled by the amplifier 305 and supplied to the current source 335. In this case, the output current IO of the amplifier 305 is added to the current ISIG' by a node 345. Thereby the current signal from the node 345 is clamped at the current IREF signal.
Patent JP-H034406-A (JP)
Title: Resin mold electric equipment for outdoor use
Inventor: KAGAWA YOSHIHIRO
IPC: H01H33/66
Filed: 1989-06-01
Abstract: PURPOSE:To prevent any crack due to a thermal stress and adhesive deterioration at a high temperature by forming specific first and second insulative coating layers around electric equipment main units. CONSTITUTION:Electric equipment main units 11, 12 are coated with a first insulative coating layer 15 incorporating 30-50% of glass fiber having an average diameter of 5mum and an average length of 50mum and 25-35% of a particle filler having an average diameter of 5mum or less into a mixture of bisphenol type epoxy resin and hardener. The first insulative coating layer 51 is coated with a second insulative coating layer 52 made of a circular aliphatic epoxy resin mixture incorporating 55-75% of hydrate aluminum as a filler into a mixture of resin and a hardener. Therefore, deterioration of insulative and adhesive properties can be prevented even at a high temperature, and further, a resin mold electric equipment for an outdoor use having an excellent crack resistance can be obtained.
Patent JP-S5928049-A (JP)
Title: High strength and high tenacity composite aluminum alloy cast component
Inventor: KONDOU KATSUMI
IPC: B23K9/04
Filed: 1982-08-06
Abstract: PURPOSE:To prevent deformation or crack due to a thermal load while satisfying the requirement such as a light weight or the like by adding highly ductile aluminum alloy at necessary parts with high strength aluminum alloy as a base material to construct an aluminum alloy cast component such as a cylinder head. CONSTITUTION:When a cylinder head 1 which has a plurality of cylindrical bores 2 is manufactured as an aluminum alloy cast component, highly ductile aluminum alloy is added to necessary parts with a high strength aluminum alloy as a base material. For example, the base material contains 0.35Mg+0.4Mn- added AC4B (Al, 3.3Cu, 8.5Si, 0.35Mg, 0.4Mn, 0.45Fe) cast aluminum alloy, and AC4C (Al, 7.0Si, 0.4Mg, 0.2Mn, 0.45Fe) cast aluminum alloy is raised particularly on an exhaust valve seat 4a which becomes high temperature. In this manner, a deformation and a crack due to a thermal load can be prevented while satisfying the light weight and the improvement in the performance of an engine.
Patent JP-S5261931-A (JP)
Title: Processing system for pattern curvature section extraction
Inventor: YAMAMOTO EIICHIROU
IPC: G06K9/46
Filed: 1975-11-18
Abstract: PURPOSE: Through correction processing, the error effect caused in accordance with quantization is corrected in order to extract even a delicate curvature section. Thus, the above extraction can be utilized as a detailed characteristics for the character identification. 
     COPYRIGHT: (C)1977,JPO&Japio
Patent JP-H07316486-A (JP)
Title: Composition for coating vinyl chloride resin molding and method of coating molding therewith
Inventor: NISHIMATSU TADAO
IPC: C09D139/02
Filed: 1994-05-30
Abstract: PURPOSE:To obtain the title composition which can prevent the plasticizer from bleeding to the surface of the molding to make the surface proof against staining with dust, oil a water-base ink, food or the like and is excellent in adhesion to a vinyl chloride resin molding, weatherability, high-frequency weldability, etc. CONSTITUTION:This composition is one used as a top-coating composition for a primed vinyl chloride resin molding and comprising a soft fluororesin comprising a fluororubber and a vinylidene fluoride resin and a copolymer of a monomer having a quat. ammonium halide group represented by formula I (R1, R2 and R3 are each an alkyl, and Y is a halogen) and an alpha,beta-ethylenically unsaturated group represented by formula II (R4 is hydrogen or methyl) with another alpha,beta-ethylenically unsaturated monomer.
Patent JP-S5565257-A (JP)
Title: Yellow pigment and its preparation
Inventor: FUJII OSAMU
IPC: C09B57/00
Filed: 1978-11-10
Abstract: NEW MATERIAL:A yellow pigment bis-( 4,5,6,7-tetrachloroisoindolin-1-on-3-ylidene )-phenylenediamine(1,4) having strong diffraction peaks at angles (2θ) of diffraction of about 9.8, 24.5, 25.2, and 29.7°, of the formula.  
     USE: Coating automobiles and outdoor structures, and coloring resins.  
     PROCESS: A pigment of the formula is dispersed in an aromatic solvent, and a solution of potassium hydroxide in a lower alcohol is added to the dispersion to form a potassium salt. The salt crystals thus formed are isolated, dried, dispersed in water, and warmed, or hydrolyzed with an acid to free the pigment, which is heat-treated. 
     COPYRIGHT: (C)1980,JPO&Japio
Patent JP-S5928769-A (JP)
Title: Still video camera
Inventor: YAMANAKA SEISUKE
IPC: H04N5/335
Filed: 1982-08-10
Abstract: PURPOSE:To attain still image pickup without flicker phenomenon, by reading out a picture signal for two fields' share during one frame period and making timewise picture information corresponding to an odd number field and an even number field equal with an optical shutter. CONSTITUTION:The picture information for one frame's share read out from an image sensor 1 is recorded to a magnetic recording reproducing section 3 taking a magnetic sheet 2 as a recording medium and a recording signal is reproduced repetitively. Further, a photodetecting section of each field is interlocked with the operation of the shutter 9 and brought respectively into an effective charge storage state over at least 2-frame period. Moreover, the shutter 9 is closed until the photodetecting section of an even number field is brought into the effective charge storage state after the photodetecting section of an odd number field is brought into the effective storage state. Further, the shutter 9 is opened to provide an effective exposure period and an image pickup charge obtained at the photodetecting section of each field is read out from the sensor 1 in the state of shutter closing to obtain an image pickup output of the frame still picture.
Patent JP-H1074309-A (JP)
Title: Magnetic head having semiconductor magnetic field detector arranged under head gap
Inventor: LAZZARI JEAN PIERRE
IPC: G11B5/37
Filed: 1997-05-14
Abstract: PROBLEM TO BE SOLVED: To provide a magnetic head which has high sensitivity to the magnetic field and allows a detector to be arranged under a head gap. SOLUTION: In the magnetic head equipped with a magnetic circuit, which has two pole pieces 221 , 222 separated by the head gap 24, and a semiconductor magnetic field detector, the detector 40 is arranged under the head gap 24, is positioned under the pole pieces 221 , 222 , and is provided with two extended, symmetrical parts, which are crossed by bias currents having equal magnitudes but flowing in opposite directions.
Patent JP-H04363408-A (JP)
Title: Water bottom original position soil nature test device
Inventor: GOMYO MICHIO
IPC: E02D1/02
Filed: 1991-06-10
Abstract: PURPOSE:To provide a test device at an original position on soft water bottom nature soil without destroying its bottom mud and perform soil nature testing at the original position. CONSTITUTION:At appropriate positions at a ballast tank 3 provided coveringly over a soil nature tester, valve devices that conduct freely underwater weight adjustment as to the ballast tank 3, such as plural fixed valves 4A, 4B, 4C to regulate a ballast tank 3 inside air quantity at a predetermined maximum value and valves 7A, 7B to conduct the injection and discharge of compressed air into and out of the ballast tank 3 by remote control, are equipped.
Patent JP-H0430994-A (JP)
Title: Slicing method
Inventor: FUKUI TORU
IPC: B28D5/02
Filed: 1990-05-28
Abstract: PURPOSE:To prevent a ware from chipping just before cutting completion and to improve the yield, by reducing the relative feeding speed of a crystal ingot to the speed in the degree of not causing chipping only at the cutting terminal vicinity of the ingot. CONSTITUTION:The feeding speed relative to the inner peripheral edge 11 of a crystal ingot 2 fixed to a base 3 by an adhesive 4 is reduced to the speed of the extent of not causing chipping only at the cutting terminal vicinity of the ingot 2. Consequently, the chipping depth caused by slicing with the inner periphedral edge 11 is made less than 1mm and chipping is removed with beveling thereafter.
Patent JP-2000331074-A (JP)
Title: Commodity sale data processor
Inventor: ISHII KENICHI
IPC: G06Q50/00
Filed: 1999-05-19
Abstract: PROBLEM TO BE SOLVED: To quickly construct each data base with a low cost. SOLUTION: A common set file 20 which sets common management data which are common to individual management data and can specify each of data base 10A, 10B, and 10C (tables 11A, 11B, and 11C) and a common task program 30 which can update the data base specified on the basis of set common management data are provided to remove the load related to common management data from data bases 10A, 10B, and 10C (tables 11A, 11B, and 11C, task programs 12A, 12B, and 12C, and set files 13A, 13B, and 13C).
Patent JP-S5839656-A (JP)
Title: Phenylurea derivative and selective herbicide
Inventor: KAERIYAMA MINORU
IPC: C07C239/00
Filed: 1981-09-02
Abstract: NEW MATERIAL:A compound of formulaI[R is lower alkyl, lower alkoxy; R' is H, halogen; A is phenyl of formula II (X is halogen, lower alkyl; n is 0-2), 5-methyl-1,3,4-oxadiazolyl, pyridyl; B is hydroxyl, 1-3C alkylene]. EXAMPLE:1-Methoxy-1-methyl-3-[4-(p-ethylphenethyl)phenyl]urea. USE:Herbicide showing high selectivity to crops such as soybean and rice plant. PREPARATION:The reaction of an aniline of formula III such as 4-(p-ethylphenethyl)-aniline with a compound of formula IV such as N-methoxy-N-methylcarbamoyl chloride is conducted in a solvent in the presence of a base such as pyridine.
Patent JP-S5470354-A (JP)
Title: Patterning of synthetic resin surfaces
Inventor: MIYASHITA KENICHI
IPC: B29C43/00
Filed: 1977-11-15
Abstract: PURPOSE: To form a pattern closely resembling the crack on the tile surface of ceramic wave on the surface of a synthetic resin, by press molding a synthetic resin meterial and a plate with a creased release sheet placed between them.  
     CONSTITUTION: The creased release sheet 3 0.01W20mm thick is placed between the synthetic resin material 1 and the plate 2, and they are hot-pressed between the top and bottom plates of a press to transfer the crease of the sheet 3 to the surface of the molded article 4., thus forming the cracked patterns 5.  
     EFFECT: Elegant cracked patterns having improved decoration and solid thickness can be given to the molded article. USE;Flooring, wall covering materials, etc. 
     COPYRIGHT: (C)1979,JPO&Japio
Patent JP-S6270129-A (JP)
Inventor: GEIRII ERU BANDAASAIDO
IPC: B43M3/04
Filed: 1986-06-16
Abstract: (57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。
Patent JP-S5762815-A (JP)
Title: Manufacturing device for multilayer tube
Inventor: SHIRAISHI MASAHIKO
IPC: B23K13/02
Filed: 1980-10-03
Abstract: PURPOSE: To weld a multilayer tube nicely by the electric welded tube system by providing a seam guide fin that controls direction and position of opposed part of both rims of the tube and a seam guide having a member that presses the outer face of the outer tube in front of the heating section.  
     CONSTITUTION: Plural strips 10, 12 are piled and bent to pipe-like from by passing a series of forming rolls. Opposed rims of the strips 10, 12 are heated by a high frequency heating device 32 and press-fixed by squeeze rolls 36 to manufacture a multilayer tube. In this case, a fin 40 of a seam guide 60 enters the seam part to prevent positional deviation of the seam part. Rolls 46, 48 contact closely with both sides of the seam part to keep the form to correct circular arc face and maintain the gap at a fixed value that equals to the width of the fin 40. Thus, correct and sure welding of the seam part is made possible. 
     COPYRIGHT: (C)1982,JPO&Japio