baber/WOPTO huggingface dataset:
Patent JP-H01209957-A (JP)
Title: Dc/dc converter
Inventor: GOUNAI TOSHIO
IPC: H02M3/335
Filed: 1988-02-16
Abstract: PURPOSE:To reduce the size and weight of a DC/DC converter by associating a set of forward type DC/DC converters utilizing the first quadrant and a set of similar converters utilizing the third quadrant. CONSTITUTION:A DC/DC converter is composed of a primary power source 1, input filters 2-3, a transistor(Tr) 4 of a switching element, a transformer 5, regenerative diodes 6, 8, a rectifying diode 7, smoothing inductance 9 and capacitance 10, a load 11, an error amplifier 17, a pulse-width controller 18, and a driver 19 as a forward type utilizing a first quadrant of the magnetization curve of the transformer 5. Further, similarly, it is composed as a forward type DC/DC converter utilizing the third quadrant to transmit power to loads 11, 15 independently by one transformer 5. As a result, the DC/DC converter in which its size and weight are reduced can be provided.
Patent JP-H01209923-A (JP)
Title: Output circuit
Inventor: OGISHI KIMIHIRO
IPC: H02H9/02
Filed: 1988-02-15
Abstract: PURPOSE:To accurately control to respond to an abrupt overcurrent by providing two circuits for detecting currents of transistors used in an output unit, and feeding back it to the gates of the transistors accurately at one side and at a rapid responding speed at the other. CONSTITUTION:A current to be supplied from a power source 1 to a load 2 is controlled by an output transistor Tr3. First and second current detectors 4, 5 are provided between the load 2 and the Tr3, the detection result is fed through a gate driver 6, thereby controlling the gate of the Tr3. The first detector 4 precisely controls but has a slow responding speed. On the contrary, the second detector 5 does not precisely control, but has a fast responding speed. Thus, a high speed operation and an accurate operation are executed with a simple circuit, thereby suppressing an abrupt overcurrent, and controlling a precise current.
Patent JP-H01208652-A (JP)
Title: Temperature controller for fluid continuous-heating apparatus
Inventor: IDA MASAHIRO
IPC: F24H1/10
Filed: 1988-02-15
Abstract: PURPOSE:To enable an outlet temperature to be controlled to a desired outlet temperature with high accuracy by discriminating whether the cause of fluctuations in the outlet temperature of a fluid to be heated is due to fluctuations in the inlet temperature of the fluid to be heated or fluctuations in the flow rate thereof and by regulating the temperature of the fluid to be heated in accordance with the result of the discrimination. CONSTITUTION:A pipeline 24 between a pressure reducing valve 28 and a heat exchanger 20 is provided with a pressure detector 32, and the pressure signal of a heated fluid is converted into a digital signal by an A/D converter 33 to be supplied to a microcomputer 30. Signals released out of both an inlet temperature detector 34 and an outlet temperature detector 38 are also supplied to said microcomputer. The microcomputer 30 judges whether fluctuations in outlet temperatures are attributable to fluctuations in inlet temperatures or fluctuations in the flow rate of a fluid to be heated, and according to its judgement results, the pressure of the fluid to be heated is regulated and the outlet temperature is maintained to the level of a desired outlet temperature. In the case where pressure fluctuations exceeding the set pressure of the pressure reducing valve 28 are necessary, an alarm 42 is actuated.
Patent JP-S59159129-A (JP)
Title: Transmission type liquid crystal display device
Inventor: YAMANOSHITA MARI
IPC: G09F9/00
Filed: 1983-03-01
Abstract: PURPOSE:To reduce consumption of electric power and to obtain a display image high in luminance by using a straight tube type fluorescent lamp provided with a reflective film on the side reverse to the side facing a liquid crystal plate as a light source. CONSTITUTION:An illumination device 7 provided with a built-in fluorescent lamp 6 is arranged on the backside of a display part 5 consisting of a liquid crystal plate 1. A reflective film 10 is formed on at least half or more of the outer circumference of the glass tube 8 of the lamp 6. Therefore, consumption of power is saved, and an image of high luminance is obtained.
Patent JP-S59159065-A (JP)
Title: Detection of weld position
Inventor: TAJIME TOORU
IPC: G01N21/952
Filed: 1983-03-01
Abstract: PURPOSE:To enable the detection of positions of welded parts after the grinding with a bead cutter while improving the measuring accuracy by employing a system of detecting the positions from the distribution of surface temperatures near the welded parts. CONSTITUTION:A scanner 9, a lens 10 and an infrared ray detector 11 are so arranged that infrared rays emitted from a fine area near a welded part 3 focuses on the light receiving surface of the infrared ray detector 11. On the other hand, the surface temperature of a seam welded pipe 4 is higher than the ambient temperature, showing a temperature distribution 12 where the max. temperature position O exists on the welded part 3. The scanner 9 is vibrated perpendicular to the welding direction of the welded part 3, output of the infrared ray detector 11 is a signal output 13A or 13B, inverted in the phase whether the position is A or B on the surface of the seam welded pipe 4 whose image is formed on the detector 11. Thus, it is possible to find the polarity showing how the position detector X is deviated from the max. temperature position O from the phase and the deviation value from the max. temperature position O based on the amplitude of the signal outputs 13A and 13B.
Patent JP-S59159891-A (JP)
Title: Preparation of concentrated coal/water slurry by wet process
Inventor: NAKA AKIHIRO
IPC: C10L1/32
Filed: 1983-02-28
Abstract: PURPOSE:To prepare efficiently a coal/water slurry having excellent long-term stability and a uniform quality, by placing a grinding auxiliary which contains a specified polyether compd., crushed coal and water in a wet mill for pulverization of coal. CONSTITUTION:A polyether compd. having a molecular weight of 16,000-300,000 is prepared by adding alkylene oxide to an amine (derivative) containing at least three, preferably at least five active hydrogen atoms in the molecule (e.g. diethylenetriamine), or a derivative thereof is prepared through reactions of the terminal hydroxyl group of the polyether compd. A grinding auxiliary which contains the polyether compd. (derivative) as essential ingredient, crushed coal and water are placed in a wet mill in such amounts that the final slurry may have a coal concentration of 60-80wt% and are ground until 70-90% coal particles pass a 200-mesh sieve.
Patent JP-H0263261-A (JP)
Title: Device for scanning and reading documents different in format
Inventor: JIYUZETSUPE KORI
IPC: H04N1/12
Filed: 1989-02-13
Abstract: PURPOSE: To allow even the small sized reader to scan and read documents of sizes A4, A3, for example, by selecting a 1st read mode where a carriage is moved or a 2nd read mode where a carrying device moves a document so as to adjust an optical device. CONSTITUTION: A document 2 or 3 is read through scanning operation of a single optical device 20. In order to read the document 2 placed on an exposed surface 5, the optical device 20 is skided from a position 23 to a position 25 at a prescribed speed under the exposed surface 5. In contrast with above, in order to read the document 3 in the moving mode by a device 7, the optical device 20 remains standstill at the position 23 in matching with the exposure area E. The document 3 is fixed by a structure 12 and in standstill with respect to the optical device 20 but only moved by a movable blade member 29'. A sensor 29 provides a signal for correct alignment for the optical device 20 at the position 23. Thus, even the small sized reader reads documents of, e.g. sizes A3, A4.
Patent JP-S55125795-A (JP)
Title: Protection unit for moving coil type electromechanical converter
Inventor: SASAMURA KOUHEI
IPC: H04R3/00
Filed: 1979-03-22
Abstract: PURPOSE:To increase the reliability of protective device, by using the signal in response to the temperature of moving coil and that in response to the amplitude of drive signal. CONSTITUTION:The signal from the input terminal 1 is fed to the moving coil Rs of the speaker SP via the amplifier 2 and the switch SW. The signal in response to the temperature change in the coil Rs is obtained by the bridge circuit BC taking this coil Rs as one side. This signal is fed to the adder ADD by forming the first signal in response to the temperature of the coil Rs via the LPF, and level adjuster VRt. Further, the signal from the switch SW is formed into the second signal in response to the amplitude of the drive signal of speaker via the variable resistor VR and fed to the adder ADD. Further, the output of the adder is given to the memory section MA, and when the first and seceon signals exceed a given signal level respectively, the control section CC is operated and the drive signal is interrupted with the switch SW. Thus, the reliability of the protective device can be increased.
Patent JP-S59159135-A (JP)
Title: Optical modulator
Inventor: INOUE NAOHISA
IPC: G02F1/19
Filed: 1983-02-28
Abstract: PURPOSE:To reduce temperature rise for driving an optical modulator and to reduce also power consumption by controlling the cut-off of an optical transmission mode in an optical waveguide by temperature change through a temperature change generating means. CONSTITUTION:The optical waveguide 2 consisting of polycarbonate or the like is formed on a substrate (glass, etc.) 1 and a heating electrode 4 is formed on the optical waveguide 2. When a switch 5 is off and the heating electrode 4 is not heated, basic mode power is shut in the optical waveguide 2 and transmitted. When the switch 5 is turned on, the voltage of a power supply 6 is applied to the heating electrode 4 and the heating electrode 4 is heated, the refractive index of the optical waveguide 2 is reduced and that of the substrate 1 is increased. Consequently, the transmission mode is cut off. Since the device is driven by sufficiently small temperature change, the temperature rise of the whole device is prevented and the power consumption is reduced.
Patent JP-S52118417-A (JP)
Title: Preparation of acrylic alkali salt dispersion
Inventor: KOIZUMI SHIROU
IPC: C09K23/00
Filed: 1976-03-29
Abstract: PURPOSE: To prepare acrylic alkali salt dispersion by evaporating volatile OH compounds from the reaction products obtained by the reaction of acrylic compounds with specific alkalimetal compounds, in the presence of specific alkylbenzenes. 
     COPYRIGHT: (C)1977,JPO&Japio
Patent JP-H04253679-A (JP)
Title: Case for tape cartridge
Inventor: YAMAMOTO OSAMU
IPC: B65D85/575
Filed: 1991-02-01
Abstract: PURPOSE:To obtain a receiving case from which a tape cartridge can be taken out easily by one touch operation by providing an interlocking means for retaining the case body in a closed position with a spring deflected to impart an upwardly swinging motion to an upper lid when it is released. CONSTITUTION:A receiving case consists of a plastic-made case body 1, an upper lid 2 and a partition 3. To attach the upper case 2 to the case body 1, a helical spring 40 is fitted over a connecting pin 24 on one side of the upper lid, the one end thereof is receivably supported on the inner surface of the case body 1 and the other end thereof is received by the inside of the top wall 22 of the upper lid 2, so that the upper lid 2 is set with the spring kept deflected to impart an upward swinging motion to the upper lid 2 when it is released. To take a cartridge C out of the case, the left and right side walls 12 on the side of an entrance and exit opening 14 of the case body 1 are squeezed against each other to resiliently deform the front end of a bottom wall 11 so as to disengage a locking recess part 18 outwardly and the upper lid 2 is then opened upwardly by the spring 40 to slidably move the partition 3 forwardly and slightly past the front opening 14, whereby the tape cartridge C can be taken out easily.
Patent JP-S54126263-A (JP)
Title: Continous manufacturing of synthetic resin plate
Inventor: TOYOOKA YASUO
IPC: B32B38/10
Filed: 1978-03-24
Abstract: PURPOSE:To manufacture a synthetic resin plate, continuously, by covering a liquid raw material of a synthetic resin with a pair of films compatible with said raw material, introducing the composite into the gas between a pair of running endless belts, and polymerizing and solidifying the raw material. CONSTITUTION:A liquid raw material 10 of a synthetic resin is supplied between a pair of films F, F' having compatibility with said raw material, and pref. having printed patterns, and the composite is formed with a pair of endless belts 1, 1' running at a same speed. The raw material is polymerized and solidified simultaneously with the forming, and the synthetic resin plate is taken out from the other end of the belts.
Patent JP-H11218435-A (JP)
Title: Depth measuring meter
Inventor: TAKANO KAZUKIYO
IPC: G01F23/44
Filed: 1998-01-30
Abstract: PROBLEM TO BE SOLVED: To exactly measure the empty dimensions to the liquid surface in a tank by lowering a bob attached at a tip end of a string from a reference point by controlling drive current to a motor and measuring the depth by the number of pulse accompanied by the motion of the string to the change in the drive current value. SOLUTION: By controlling drive current of a motor 2 with a drive current control means 19, a winder 6 is driven and a string 7 is wound up. When the increase of drive current is detected with a drive current detection means 20, contact of a bob 11 attached at the tip end of the string 7 to a measurement reference plate 10 is detected. If the bob 11 is lowered at an arbitrary velocity by weakening the drive current, a pulley 8 is rotated by the sent string 7, a slit disk 17 rotates and light pulse is emitted. This light pulse is converted to electric pulse with a light receptor 18 and counted with a CPU 21. When the bob 11 reaches the liquid level 13, the tension of the string 7 is decreased by the shock or buoyancy and the drive current changes.  Thus, the unit length of the string 7 is multiplied to the pulse measurement number to that time and the depth from the reference point to the liquid level 13 is obtained.
Patent JP-H09231592-A (JP)
Title: Optical pickup device and method for adjusting optical pickup device
Inventor: IIZUKA GENICHI
IPC: G11B7/08
Filed: 1996-02-21
Abstract: PROBLEM TO BE SOLVED: To adjust a positional relationship among a light source, a lens bobbin (coil bobbin) and yokes 27a and 27b by easy work in an optical pickup device constituted by arranging optical part items such as a light source and an objective lens driving mechanism on a substrate. SOLUTION: Yokes 27a and 28b are moved in a two-dimensional direction along the upper surface of a substrate and connected to an adjusting plate 54 adjusted in a three-dimensional direction on the substrate via holes 57 and 59 and dowels 63 and 64. A lens bobbin (coil bobbin) is attached to the adjusting plate 54 via a flexible leaf spring. The lens bobbin is adjusted to a proper position against a light source while maintaining its positional relationship with the yokes 27a and 27b.
Patent JP-H03236134-A (JP)
Title: Electronic control type device
Inventor: SAKAI MASAYUKI
IPC: H01H47/00
Filed: 1990-02-14
Abstract: PURPOSE:To avoid the dangerous condition of a relay switch by providing a control part with a means, which issues an alarm and limits the driving of a relay when a count value of a means for counting the number of times of opening and closing of the relay switch has reached a specified value. CONSTITUTION:A control part 1 consisting of a microcomputer is provided, and this control part 1 drives the relay coil 4 of a relay 3 based on the cooking condition set by a key board 2, and a relay switch 5 is turned on or turned off, and food is heated by microwaves based on the power supply to the magnetron 7 connected with a high voltage generating circuit 6. Furthermore, the control part 1 displays a remaining cooking time and displays an alarm on the display 8. This control part 1 is provided with a first means Cx, which counts the number of times of opening and closing of the relay switch 5 of the relay 3, a means, which issues an alarm when this count value has reached a first specified value, and a means, which issues a second alarm when the count value of the first means has reached the specified value larger than the specified value and also limits the driving of the relay 3.
Patent JP-S55127264-A (JP)
Title: Freight truck rear gate with small window
Inventor: WATANABE YOSHIAKI
IPC: B62D33/027
Filed: 1979-03-23
Abstract: PURPOSE:To secure safety during night work by a method wherein rear and side gates of a freight truck are provided with small windows or the rear gate as a whole is made see-through so that combination lamps and working lamps are not hidden when the gates are tilted down. CONSTITUTION:Small windows 2 are provided at those positions of a rear gate 1 which correspond to combination lamps 3 when the gate 1 is tilted down, and the windows 2 are fitted with transparent plastic plates, wire meshes, metal frames, or the like, or the gate 1 as a whole is made see-through by such construction, so that the lamps 3 will not be hidden when the gate 1 is tilted down for night work. Further, small windows 2a, 2b are provided at those position of side gates which correspond to working lamps 16a, 16b when the side gates are tilted down, and the lamps 16a, 16b are turned on when the side gates are tilted down, to ensure lighting for night work.
Patent JP-H01209424-A (JP)
Title: Liquid crystal electrooptic device
Inventor: WATABE HIROSHI
IPC: G02F1/139
Filed: 1988-02-17
Abstract: PURPOSE:To improve the performance of field angle, response, and display by eliminating twist structure and specifying a value DELTAn.d, orienting molecules contacting upper and lower substrates so that pretilt angles are not in parallel, and making the axes of polarization of polarizing plates cross each other at right angles and setting the angle between the axes of polarization and liquid crystal molecule major axes to almost 45 deg.. CONSTITUTION:Liquid crystal molecules 105 have no twist structure and are oriented so that the angles (pretilt angle) between the substrates and liquid crystal molecule major axes are such angles that molecules nearby the two substrates 102 are not parallel. The product (DELTAn.d) of the thickness of the liquid crystal layer and the effective refractive index anisotropy to light incident on the substrate 102 vertically is set to 0.2-0.35mum. Further, the liquid crystal layer is formed between the two polarizing plates 101 which are arranged so as to have their axes of polarization at right angles to each other, and the angle between the polarization axis and the liquid crystal molecule major axis projected on the substrate 102 is set to about 45 deg.. Consequently, performance exceeding a TN system in terms of the field angle, response, and display is obtained.
Patent JP-S54126444-A (JP)
Title: Phase non-linear non-cyclic filter
Inventor: HIBINO MASAO
IPC: H03H17/06
Filed: 1978-03-24
Abstract: PURPOSE:To reduce the number of multipliers to simplify constitution by providing the second operation circuit having the second adder which adds output signals of the second multiplier. CONSTITUTION:This filter is constituted by input termial 14, output terminal 15, and blocks 6 and 7 which operate transmission functins HU(Z) and HK(Z) respectively. Then, operation blocks 6 and 7 multiply signals, which are obtained by delaying signals by the prescribed number of delay elements, 8 and 10, by the prescribed number of multipliers 9 and 10 respectively, and results are added by adders 12 and 13 and are outputted to terminal 15.
Patent JP-S59162213-A (JP)
Title: Operating furnace of melt reduction furnace
Inventor: TAKADA SHIKOU
IPC: C21B13/00
Filed: 1983-03-04
Abstract: PURPOSE:To accelerate reduction with a min. amt of flux and to discharge smoothly slag in a method for charging powder ore and flux to a titled furnace contg. a C contg. solid reducing agent and provided with plural upper and lower stages positioned near a tuyere by blowing specifically the flux. CONSTITUTION:A C contg. solid reducing agent is charged into a vertical melt reduction furnace 1 to form a packed bed. Powder ore and a flux for accelerating the reduction thereof are supplied by a device 7 to a fluidized preliminary reduction furnace 6, where the ore is preliminarily reduced and heated by using the high temp. waste gas generated in the furnace 1. The preliminarily reduced ore and flux are transferred through a discharging port 8 to the upper and middle tuyeres 3, 4 in the lower part of the furnace and are blown together with the hot air from a hot stove 11 into the furnace 1. These materials are immediately melted, and while the molten material drops in the reducing agent packed bed in the lower part of the furnace 1, the materials are reduced and the molten metal and slag are formed. A flux for adjusting the final slag component in the hopper 9 is blown together with the hot air through a tuyere 5 into the furnace 1 to discharge the slag smoothly. The molten metal is melted together with the flux and is finally accumulated in the hearth part. The molten metal is properly tapped through a discharging port 10.
Patent JP-H10230247-A (JP)
Title: Killing method of aquatic microorganism by pressurizing and device therefor
Inventor: OGAWA NAOKI
IPC: C02F1/20
Filed: 1997-02-19
Abstract: PROBLEM TO BE SOLVED: To kill in water and annihilate microorganisms such as Protozoa without using a chemical by pressurizing water to dissolve air and evacuating the water to turn the dissolved air into bubbles. SOLUTION: The water containing microorganisms is supplied to a pressurizing tank 2 from a raw water tank 8 with a feed pump 1. The pressurized air is supplied to the pressurizing tank 2 through a diffuser pipe 4 with a compressor 3 to be dissolved into water in the pressurizing tank 2. At the same time, the inside of the pressurizing tank 2 is pressurized under the pressure of preferably >=2atm. In the case of <=2atm, the killing effect to microorganisms is decreased. After reaching vapor-liquid equilibrium, the inside of the pressurizing tank 2 is kept in the pressurized state for a fixed time (e.g. about 1sec). Next, the water in the pressurizing tank 2 is opened in the atmosphere with a needle valve 7 opened. Then the dissolved air becomes a supersaturated state and fine bubbles are generated.  Then, fine bubbles generated in the cell breaks the cell wall from the inside and the microorganism are killed.
Patent JP-H01209297-A (JP)
Title: Sling
Inventor: MAKINO MASAKATSU
IPC: B66C1/12
Filed: 1988-02-16
Abstract: PURPOSE:To contrive the simplification of structure, reduction of weight and the cost down by inserting a single hanging chain, mounting a hook in both the ends, being able to fixedly adjust right and left length to be changed into length adjusting fixing metal fixture pivotally mounted to a hoist metal fixture. CONSTITUTION:Length adjusting fixing metal fixtures 2, 2 are pivotally mounted to a hoist metal fixture 1, and a single hanging chain 3, which mounts to its both ends hooks 4, 4, is inserted, being able to fixedly adjust right and left lengths to be changed, through the length adjusting fixing metal fixtures 2, 2. In this way, the length of the hanging chain 3, placed in the right and left of the length adjusting fixing metal fixtures 2, 2, can be easily controlled to be fixedly changed and adjusted. Consequently, needless to say, for the method of hanging balanced with equal right and left length of the hanging chain 3, and even for the method of hanging unbalanced with the right and left length different of the hanging chain 3, the hanging can be easily performed even without using a length adjusting chain or the like as in the past. Accordingly, by this amount, the simplification of structure, reduction of weight and the cost down can be contrived.