baber/WOPTO huggingface dataset:
Patent JP-S57127346-A (JP)
Title: Optical transmitter of video base band
Inventor: FUJITO KATSUYUKI
IPC: H04B10/00
Filed: 1981-01-30
Abstract: PURPOSE:To avoid the quality deterioration of the transmitted signal, by applying the compensated signal to the laser diode of a power source after inverting the polarity of the compensated signal. CONSTITUTION:The linearity is previously changed through a linearity compensating circuit 1 for a video signal (a) of the base band to be transmitted. Then a waveform (b) obtained by extending the white part of the signal (a) is turned into a waveform (c) having an inverted polarity to be applied to a laser diode 6. Thus the nonlinear part is compensated for the optical output characteristics of the diode 6, and at the same time the white part of the signal (a) has a low output level of the beam. Accordingly the diode 6 has a multi-mode to reduce the occurrence of the speckle noise, and the distortion of a waveform is reduced.
Patent JP-H11197067-A (JP)
Title: Suction tool for floor
Inventor: FUJIYOSHI TOSHIYUKI
IPC: A47L9/04
Filed: 1998-01-09
Abstract: PROBLEM TO BE SOLVED: To improve safety by preventing a rotating brush from rotating under a condition where a suction tool is tilted up from a face to be cleaned. SOLUTION: A suction tool main body 1 with a suction hole 7 on its underside, a rotating brush storing room 8 formed in this suction tool main body 1 and a rotating brush 11 facing the suction hole 7 and being freely rtotatably stored in the rotating brush storing room 8 are provided and an air intake path for taking open air into the rotating brush storing room 8 is formed and guides for guiding the open air sucked from this air intake path to a brush body and blades of the rotating brush 11 are formed and a cut part for venting (a cut recessed part 7b) is formed on the side edge part 7a in the suction direction of the suction hole 7.
Patent JP-H04248454-A (JP)
Title: Heater control device of oxygen concentration detection sensor
Inventor: SUGINO TADASHI
IPC: G01N27/14
Filed: 1991-02-04
Abstract: PURPOSE:To prevent generation of an extreme scattering of sensor temperature when contents stored in a memory keeping a learned value of a target resistance is damaged in a heater control device which varies and controls a heater supply power so that a resistance of the heater which is installed at an oxygen concentration detection sensor becomes a target resistance. CONSTITUTION:In a heater control device which learns and updates a target resistance within a memory 15 by a learning means 16 according to a value of a heater supply power by a heater control means 14 at the time of a specified operation state, a detection means 17 is used to check to see whether contents in the memory 15 are damaged or not. When they are damaged, the heater supply power is fixed until a learning value reaches a specified value by a power fixing means 18 and then a control means 20 is used to shift to a fixed resistance control with an annealing treatment value of a specified number of learning values from a calculation means 19 as an initial value.
Patent JP-H09201319-A (JP)
Title: Vacuum cleaner
Inventor: TAKAGI MASAYUKI
IPC: B01D39/16
Filed: 1996-01-30
Abstract: PROBLEM TO BE SOLVED: To prevent invasion of dust in a pressure sensor by positioning a pressure intake port of the pressure sensor between a suction port of an electric blower and a dust collecting filter and arranging a dust protective filter in the pressure intake port of the pressure sensor. SOLUTION: A chamber 20 having an approximately cylindrical main body pressure intake port 19 is positioned on an approximately upper face of a motor support body 18 and provided with a filter support rib 22 for eliminating a dust protective filter 21 from being sucked by an electric blower 39. The inside of the chamber 20 is so constituted that the gas-permeable, protective filter 21 which is consisted of a nonwoven fabric, sponge, etc., having gas permeability and filtering dust is held. A pressure sensor 23 is mounted on a control board 53 and pressed in a sensor tube mounted port 24 provided on the upper case 6 via a pressure transmission sensor tube 28 having flexibility.
Patent JP-H05203405-A (JP)
Title: Scanning tunnel microscope
Inventor: ITO MAKOTO
IPC: H01J37/28
Filed: 1992-01-29
Abstract: PURPOSE:To measure the property of a defect in detail by the first probe scanning by providing a switching circuit and switching the control of a bias voltage to a bias circuit for tunnel spectral when the variation of a tunnel current is large. CONSTITUTION:When the variation of a tunnel current detected by means of a current detecting means 13 becomes extremely large, a switching circuit 17 stops the drive of piezo-electric elements 6 and 7 by means of a piezo-electric element drive circuit 14 and the control of a bias voltage applied across a probe 5 and sample 4 is switched to a tunnel spectral bias circuit 16 from a bias circuit 12. Therefore, the variation of the tunnel current against the continuous variation of the bias circuit at the parts exceeding the average surface unevenness of the sample 4 can be automatically observed as tunnel spectral. While the tunnel spectral is measured, image processing is performed after the data and coordinate values are stored. A tunnel spectral measurement terminating circuit 17 switches the control of the bias voltage to the circuit 12 and ordinary observation is restarted.
Patent JP-S55105498-A (JP)
Title: Speaker
Inventor: AOI TAKAHISA
IPC: H04R9/04
Filed: 1979-02-07
Abstract: PURPOSE:To reduce the distortion of the higher harmonic by using in switching plural number of voice coils which are turned in division to the axial direction of the coil bobbin and in accordance with the aural input signal. CONSTITUTION:Voice coils 9a-9d are turned round coil bobbin 6 connected to diaphragm 8 and then inserted into gap 5 of the magnetic circuit consisting of magnetic yoke 1, center pole 2, magnet 3 and magnetic plate 4 each. For coils 9a-9d, only the coil opposing to plate 4 is selected via the input aural signal and by the circuit which is not shown in the diagram and then driven by the aural signal. Accordingly, the voice coil protruded outside magnetic gap 5 is never driven, thus causing no distortion due to the fluctuation of the magnetic flux density outside gap 5.
Patent JP-H07214576-A (JP)
Title: Manufacture of cast molding
Inventor: JINNO YOSHIKAZU
IPC: B29L31/34
Filed: 1994-02-08
Abstract: PURPOSE:To obtain a cast molding with the characteristics of each part corresponding to installation conditions. CONSTITUTION:The interior of a die 7 is subdivided by inserting a partition plate 6 into the interior. In addition, a high-fill cast molding material 9 is cast into one side of the partition plate 6 and a low-fill cast molding material 8 is cast into the other side. After the casting, the partition plate 6 is pulled out and a die 7 is rotated to deflect a filler using a centrifugal force.
Patent JP-H09203293-A (JP)
Title: Propulsion pipe for method of propulsive construction
Inventor: NISHIURA KATSUTOSHI
IPC: F16L57/00
Filed: 1996-01-30
Abstract: PROBLEM TO BE SOLVED: To obtain a propulsion pipe, which can be used directly for a method of propulsive construction without employing a sleeve and in which a crack is difficult to be generated even by expansion, etc., due to the temperature change of a steel pipe. SOLUTION: A steel pipe 11 is protected by a resin layer 13, and can be used directly for a method of propulsive construction. An elastic body layer 12 is interposed between the outer circumferential surface of the steel pipe 11 and the resin layer 13, deformation is absorbed by the elastic body layer when the steel pipe 11 is expanded by a temperature change, and large deformation force is not transmitted to the resin layer 13. Accordingly, a crack is difficult to be generated in the resin layer 13. Since there is sufficient adhesion among the mutual steel pipe 11, elastic body layer 12 and resin layer 13, these steel pipe, elastic body layer and resin layer are difficult to be slipped off at the time of the method of propulsive construction and the steel pipe 11 can be protected sufficiently.
Patent JP-H06290911-A (JP)
Title: Manufacture of ceramic varistor
Inventor: OGATA KIMIO
IPC: H01C7/10
Filed: 1994-01-12
Abstract: PURPOSE:To improve surge-resisting property by a method wherein at least a part of the surface of a strontium titanate semiconductor porcelain varistor sintered body is coated with a mixture containing Na or an Na compound and Si or an Si compound, and a heat treatment is conducted thereon. CONSTITUTION:This ceramic varistor manufacturing method is the method in which a semiconductor ceramic varistor, having a heat-treatment providing process to be conducted at least on a part of the surface of a strontium titanate semiconductor ceramic sintered body after coating of a mixture containing Na or an Na compound, Ca or a Ca compound and Si or an Si compound, is manufactured. Besides, the mixture of Na or an Na compound, Ca or a Ca compound, Si or an Si compound and Al or an Al compound can be used. Also, the mixture of Na or Na compound, Al or an Al compound, and Si or an Si compound can be used. As a result, a semiconductor ceramic varistor, having excellent surge-resisting characteristics, limited voltage ratio, nonlinear coefficient and temperature changing rate of varistor voltage can be obtained.
Patent JP-S60158699-A (JP)
Inventor: NAGAI TOMOMASU
IPC: H05K9/00
Filed: 1984-01-28
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-H03221227-A (JP)
Title: Device for positioning work
Inventor: INAO AKITAKA
IPC: B21D28/36
Filed: 1990-01-24
Abstract: PURPOSE:To enable positioning at high accuracy for short time by arranging a photo-sensor composing of one pair of a light emitting element and a light receiving element facing each other with a work on a turn table between and positioning pins arranged as liftable in the turn table. CONSTITUTION:The work W is rotated with the turn table 52, and when the photo-sensor composing of one pair of the light emitting element 68 and the light receiving element 69 facing each other with the work W on this turn table between detects hole in the rotated work, the rotation of work is stopped. The positioning pins 62 are lifted, and by inserting these into bolt holes, shift of the positioning at the time of stopping the rotation is corrected. In this case, by setting a supporting arm 67 fitting the photosensor as shiftable and interval between the light emitting element and the light receiving element as adjustable, change to the kind of works can be easily executed.
Patent JP-S57128722-A (JP)
Title: Room temperature curing polysulfide rubber composition and using method thereof
Inventor: IWATA EIJI
IPC: C08G81/02
Filed: 1981-02-04
Abstract: PURPOSE: The titled composition consisting of an uncured polysulfide liquid polymer, an organic amine, an organic carboxylic acid and Sb 2 O 3 , curable rapidly at room temperature without using a lead compound, and capable of giving cured articles having improved elastic properties, dimensional stability, etc., and suitable for a dental inlay material.  
     CONSTITUTION: In four components (A) a polyalkylene polysulfide polymer, having a molecular weight of 3,000W10,000 and a crosslinking degree ≤3%, and expressed by formulaI(R is formula II; n is an integer) as an uncured polysulfide liquid polymer, (B) a ≤12C aliphatic amine, e.g. monoethanolamine, (C) a ≥6C liquid organic carboxylic acid, e.g. oleic acid, which is a liquid at room temperature and (D) Sb 2 O 3  having a particle diameter ≤10μ, only the component (D) is isolatedly stored. In use, the component (D) is mixed with the components (A), (B) and (C) and cured. Powdery sulfur, various fillers, e.g. TiO 2  or zirconium silicate, and a plasticizer, e.g. dibutyl phthalate, are added thereto if necessary. 
     COPYRIGHT: (C)1982,JPO&Japio
Patent JP-H05204276-A (JP)
Title: Thermal fixing device for successive document sheets
Inventor: HINO TOSHIO
IPC: G03G15/22
Filed: 1992-01-30
Abstract: PURPOSE:To prevent successive document sheets from obliquely advancing in the structure of a thermal fixing device for successive document sheets. CONSTITUTION:This device is provided with 1st and 2nd pressuring rollers 25, 26 which are rotatably juxtaposed through a gap at both ends of a turnable supporting plate 27 and press the successive document sheets 5 to a heat roller 11, a carrying roller 28 which is installed on the ejection side of the sheets 5 and whose carrying speed is a little higher than that of the roller 11, and a turning means 29 which turns the supporting plate 27 so that the 2nd roller 26 may retreat when the 1st roller 25 presses the sheets 5 and it may press the sheets 5 when the 1st roller 25 retreats; and it alternately switches so that the 1st roller 25 may retreat and the 2nd roller 26 may press the successive document sheets when the perforation 5a of the sheets 5 reaches between the 1st and the 2nd rollers 25, 26, and so that the roller 26 may retreat and the roller 25 may press it when the next perforation reaches between the rollers 25 and 26. Then, the sheets 5 are drawn in a correct posture by the roller 28 when the sheets 5 are not pressed in the case of switching.
Patent JP-H04249052-A (JP)
Title: Rotary anode type x-ray tube
Inventor: UCHIDA ARINORI
IPC: H01J35/10
Filed: 1991-02-05
Abstract: PURPOSE:To provide an X-ray tube with rotary anode, with which stable operation is obtained even in case putting on and off of the input is repeated, by absorbing the difference in the thermal expansion between a coupling and a rotor, and eliminating risk of generation of excessive thermal stresses in the junction of the two members. CONSTITUTION:An X-ray tube with rotary anode according to the present invention is equipped with a ring-shaped coupling 4, which is made of an inclining function material, wherein the contents of W or Mo and Cu vary gradually, and is interposed between a rotor and a supporting column 2 to which anode target 1 is secured. That part of this coupling 4 which is situated inside to be coupled with the supporting column 2 consists of W or Mo, while the outside part to be coupled with the rotor consists of Cu. Thereby an X-ray tube with excellent performance can be accomplished.
Patent JP-S5399060-A (JP)
Title: Rolling mill
Inventor: IMAI ISAO
IPC: B21B27/05
Filed: 1977-02-12
Abstract: PURPOSE:To obtain an apparatus which can freely change the sectional shape of the rolled material, by giving the pressure distribution to the rolled material according to an arbitrary pattern using a roll which can deform the sleeve independently applying the oil pressure to the plural sets of oil pockets installed, being divided in the axial direction, respectively in upper and lower portion of the roll shaft.
Patent JP-H01192712-A (JP)
Title: Production of indium phosphate powder and sintered form therefrom
Inventor: ITO EIJI
IPC: C01B25/37
Filed: 1988-01-27
Abstract: PURPOSE:To obtain at low cost in a simple process the title high-purity indium phosphate powder capable of giving excellent sintered form through incorporation of an appropriate amount of phosphoric acid, by heating indium phosphorus at specified temperatures in an oxidative atmosphere. CONSTITUTION:Using, as the raw material, such indium phosphorus not so expensive as polycrystalline indium phosphate relatively easily available, produced during compound semiconductor manufacturing processes, said indium phosphorus is, in advance, ground to a size of <=0.5mm (10-60wt.% of indium phosphate is admixed beforehand as needed) and calcined at 760-820 deg.C in an oxidative atmosphere (e.g., in the air) to obtain the objective indium phosphate powder. This powder is incorporated with an aqueous solution of phosphoric acid as the binder followed by forming and sintering at 900-1100 deg.C, thus obtaining the other objective indium phosphate sintered form useful as a piezoelectric material such as oscillator or an electrical insulating material to be used for semiconductor element production.
Patent JP-S62172376-A (JP)
Title: Developing method
Inventor: SHOJI HISAFUMI
IPC: G03G15/09
Filed: 1986-01-24
Abstract: PURPOSE:To attain image formation excellent in resolution and gradation reproducibility by sticking toner to a low potential part of an electrostatic latent image formed on an image forming body. CONSTITUTION:The thin layer of a two-component developer D consisting of carrier and toner T is formed on a developer carrier so that the maximum length of a magnetic brush in a developing area 15 is shorter than a developing gap. Then, the toner T is stuck to the low potential part of the electrostatic latent image formed on the image forming body 1. The thin layer is formed by pressing an elastic plate to the surface of the developer carrier so that the tip of the elastic plate is turned upward from the carrying direction of the developer D and passing the developer D through the gap between the developer carrier and the elastic plate. Since the thin and uniform developer layer can be formed, the developing gap can be reduced and an electric field can be sufficiently expanded. Thereby, the resolution of a developed image and its picture quality can be improved.
Patent JP-2000211909-A (JP)
Title: Apparatus for producing graphite
Inventor: KITAKI TOSHIO
IPC: C01B31/04
Filed: 1999-01-22
Abstract: PROBLEM TO BE SOLVED: To improve the working environment, production efficiency and quality by using a heating tube prepared by connecting plural cylindrical graphite tubes, installing an introduction part for a graphite raw material at one end of the heating tube and attaching a lead-out part for the product graphite to the other end of the heating tube. SOLUTION: This apparatus is obtained by placing one end face of a graphite tube l and one end face of a graphite tube adjacent thereto together, connecting the plural graphite tubes 1, forming a heating tube 2, connecting one end face part of the heating tube 2 to an introduction part 3 for a graphite raw material and connecting the other end of the heating tube 2 to a lead-out part 4 for the product graphite. An electric current is made to flow through both power feeding devices 9 attached to the introduction part 3 and the lead-out part 4 of the heating tube 2 to keep the heating tube 2 at about 1,800-3,500 deg.C by resistance heating. The graphite raw material is fed from a raw material feeding part 13 to each conveying tray pushed into the introduction part 3 of the heating tube 2. The tray is successively continuously moved and passed through the heating tube 2.  The graphite raw material is graphitized and converted into the product graphite when passed through the interior of the heating tube 2. The tray is passed from the lead-out part 4 to the outside of a furnace wall 10 and the resultant product graphite is air-cooled.
Patent JP-S63182605-A (JP)
Title: Replacing method for optical fiber cable
Inventor: KIMURA YUJI
IPC: G02B6/00
Filed: 1987-01-23
Abstract: PURPOSE:To obtain a long-life optical fiber cable by measuring the sent-in quantity at one end of an optical fiber composite electric conductor and the drawn-out quantity at the other end of the optical fiber composite electric conductor, and nearly equalizing the sent-in quantity and drawn-out quantity to each other. CONSTITUTION:When a new optical fiber cable 1 is sent in the optical fiber composite electric conductor, a sent-in quantity measuring instrument 2b measures the sent-in quantity L1 of the new optical fiber cable 1 and sends its signal to a comparison controller 4. A drawn-out quantity measuring instrument 3b measures the drawn-out quantity L2 of a drawn-out old optical fiber cable and sends its signal to the comparison controller 4. The comparison controller 4 compares those signals L1 and L2 with each other and sends a command for a speed increase to a sending-in speed controller 2a when L2>L1. Consequently, the residual tensile force applied to the optical fiber cable is reduced to obtain the long-life optical fiber cable.
Patent JP-H01194918-A (JP)
Title: Air cleaner
Inventor: OKUDAIRA YUZO
IPC: B01D46/42
Filed: 1988-01-26
Abstract: PURPOSE:To obtain a low-noise air cleaner by providing an air-permeable porous sound absorbing layer impregnated with a odor destroying agent to the inner peripheral face of a fan casing housing a centrifugal fan. CONSTITUTION:An air cleaner consists of a centrifugal fan 2, a motor 3, a fan casing 4, a dust-proof filter 5, a odor consuming filter 6 and a body 7 for housing them. An air-permeable porous sound absorbing layer 1 impregnated with a liquid-odor destroying agent is provided to the inner peripheral face of the fan casing 4. As the air-permeable porous sound absorbing layer 1, a continuous permeable foam sheet of such as urethane resin and synthetic rubber is used. Therefore in the cavity part 10 surrounded by the air-permeable porous sound absorbing layer 1, amplification of noise due to resonance is reduced in comparison with the cavity part 10 surrounded by the fan casing 7 made of a steel sheet reflecting sound wave.
Patent JP-S56111478-A (JP)
Title: Stabilizer of sonar system
Inventor: SHINDOU TAKEO
IPC: G01S7/52
Filed: 1980-02-09
Abstract: PURPOSE:To stabilize a sonar system by permitting a vibrator to follow up the upward-downward movement of a ship with accuracy, by detecting the movement of the ship by a potentiometer coupling with a pendulum and by correcting an elevation-control-motor driving signal through an adder. CONSTITUTION:The slanting of ultrasonic-wave vibrator 6, accompanying pitching or rolling, which rotates unitedly with frame 5 rotated by scan motor 2 is detected by pendulum 14, and potentiometer 17 unitedly moving with it generates the correction signal that corresponds to the movement of a ship. This signal is added to a signal from potentiometer 10 by adder 20, and through comparator 21, elevation control motor 13 is brought into feedback control to make vibrator 6 follow up the movement accurately, so that the sonar system will be stabilized.
Patent JP-S53101213-A (JP)
Title: Data transmission system
Inventor: FURUHATA MAKOTO
IPC: H04B1/40
Filed: 1977-02-16
Abstract: PURPOSE: To enhance the reliability as well as to improve the channel number display for the transceiver, by using the BCD code to the digit matching signal. 
     COPYRIGHT: (C)1978,JPO&Japio
Patent JP-S58134128-A (JP)
Title: Method for forming vapor deposition film
Inventor: ITOU SADAMI
IPC: C08J7/04
Filed: 1982-02-02
Abstract: PURPOSE:To form a vapor deposition film easily with certainty even on a supporting base material made of a natural product, by subjecting the supporting base material to the treatment for preventing the release of steam or gas, and forming the vapor deposition film in a vacuum. CONSTITUTION:A supporting base material e.g. paper or cloth, is covered with a resin film in an apparatus for forming a covering material, and subjected to the treatment for preventing steam or a gas, etc. generated from the base material to give a supporting base material 11, which is then wound around a supply drum 13 and then wound onto a take-up drum 15. A metallic compound, e.g. Al, is introduced into a crucible 16, and the vacuum degree of a vacuum vessel 12 is kept at about 10<-4>Torr, and the metallic compound is heated by a coil 17 and evaporated to collide with supporting base material 11 and prepare the aimed vapor deposition film.