baber/WOPTO huggingface dataset:
Patent JP-H02195367-A (JP)
Title: Corona discharger
Inventor: NISHIOKA KOJI
IPC: G03G15/02
Filed: 1989-01-24
Abstract: PURPOSE:To remarkably lower the voltage of a potential difference generating element, to miniatulize a discharger and to reduce the cost by connecting a condenser to the output coil of an AC high voltage power source in series, and connecting the potential difference generating element between a stabilizing plate and an earth. CONSTITUTION:The condenser 17 is connected to the output coil 13 of the AC high voltage power source in series, whereby a DC voltage is impressed on the condensor 17; the positive AC currents and negative AC currents of the AC high voltage power source become equal; DC current goes to 0. Then, the potential difference generating element 16 is connected between the stabilizing plate and the earth, whereby a voltage is impressed on the stabilizing plate, and the difference between the mean value of positive C currents and that of negative AC currents, i.e., DC currents running from a wire to the stabilizing plate are controlled. Thus, as for the potential difference generating element, the voltage and the curents can be lowered, and when the potential difference generating element is a constant currents generating element, AC currents running in a photosensitive body can be constant currents, and therefore, the discharger can be constituted with the low cost.
Patent JP-H07219556-A (JP)
Title: Sound shielding material for automobile and its production
Inventor: WATANABE KYOICHI
IPC: B32B5/26
Filed: 1994-02-09
Abstract: PURPOSE:To provide a sound shielding material for automobiles having excellent acoustic absorbing performance and sound shielding performance, etc., and a process for production of this material. CONSTITUTION:This sound shielding material (sound shielding material layer 3) is a fiber assembly formed by blending 10 to 95wt.% synthetic fibers having average fineness in a range of 0.0001 to 1d, <=50wt.% synthetic fibers having the softening point varying at least by >=20 deg.C from the synthetic fibers described above and having the average fineness in a range of 1.5 to 18d as essential components and, if necessary, the synthetic fibers having the average fineness in a range of 1 to 30d The average surface density of this fiber assembly is 0.1 to 1.5kg/m<2> and the thickness thereof is in a range of 1 to 40mm.
Patent JP-S56112770-A (JP)
Title: Light emitting semiconductor device
Inventor: SHIGE NORIYUKI
IPC: H01L33/14
Filed: 1980-02-13
Abstract: PURPOSE:To obtain the light emitting element capable of controlling its frequency in accordance with the width of a low carrier density p type layer without irregular intensity distribution in the light emitting region by forming the low carrier density layer between a high carrier density p<+> type layer and a p-n junction. CONSTITUTION:A forbidden band 1 of a GaAlAs compound semiconductor formed in dome shape, a p<+> type layer 4, a p type layer 6, a p-n junction 2 and an n type layer 5 are laminated sequentially, and electrodes are connected through contact layers to the layers 5 and 4. The carrier density of the layer 4 is 5X10<19>cm<-3>, the carrier density of the layer 6 is 1X10<16>-2X10<16>cm<-3>, and the width (d) of the p type layer 6 is less than the diffusing length of the electron such as, for example, less than 9.4mum. When the width (d) of p type layer 6 is reduced, high frequency characteristics are obtained.
Patent JP-S56113950-A (JP)
Title: Novel method for current generating by means of temperature difference and recovery of exhaust heat
Inventor: FUJII TOORU
IPC: F24J3/08
Filed: 1980-02-13
Abstract: PURPOSE: To save energy resources, by mounting heat collecting heater in a smoke duct, thus recovering heat energies and driving a turbine by means of temperature difference making use of the used waters.  
     CONSTITUTION: A heat collecting heater 7 is mounted in the smoke duct 18 between an air preheater 13 and a dust collector 14 to recover heat energies. These heated waters are supplied to a new turbine house through a feed tube 12, and the turbine house 19 is mounted on a water outlet path 5 and a water intake path 4. In this formation, the energy resources can be saved, because the media gases with a lower boiling point are flowed to drive a turbine 9 by the temperature difference between the exhaust heat and the outlet waters. 
     COPYRIGHT: (C)1981,JPO&Japio
Patent JP-H01190589-A (JP)
Title: Air spoiler
Inventor: KOGURE HIROAKI
IPC: B62D37/02
Filed: 1988-01-26
Abstract: PURPOSE:To reduce working time required for assembling an air spoiler and simplify the assembling by fittingly connecting the air spoiler body to a locking member having a leg portion which fixes the air spoiler body to the side of a vehicle in the condition that they can slide freely, and by filling foaming urethane between them. CONSTITUTION:In each leg portion 22 installed right and left on the lower side of the air spoiler body 21, stud bolts 9 are provided on a mounting base 22 formed on a bottom wall 22a, and a foaming urethane pouring port 24 is opened at the bottom wall 22a. The air spoiler body 21 is formed by projecting a flange 25 for fixing the air spoiler body 21 on a seat face 21a, and hereat, a leg fixing flange 26 with the leg 22 monolithically formed thereon is slidably fitted. Under a state that the flange 26 is fitted to the air spoiler body 21, the formation of air spoiler is completed by injecting the foaming urethane 23 from the injection port 24. This air spoiler 1 is set up by inserting the stud bolts 9 into the side of the vehicle panel, and by tightening the same by nuts.
Patent JP-H10215568-A (JP)
Title: Dc-dc converter
Inventor: TAGO MASANARI
IPC: G01R19/252
Filed: 1997-01-29
Abstract: PROBLEM TO BE SOLVED: To provide a DC-DC converter which can drive a switching device perfectly at the time of no load or a light load. SOLUTION: An input capacitor Ci, a switching device, for inexample an N-MOSFET Q1, a diode D1, a smoothing circuit 2 and a voltage-dividing resistance 5 for the output voltage detection is inserted between the input terminals V1 and V1' and output terminals V2 and V2' of a DC-DC converter 10. Further, a boost strap circuit 3 is connected between the drain D and source S of the N-MOSFET Q1. A switching device driving circuit 4 is connected between the connection point B of a diode DB, and a capacitor CB of which the boost strap circuit 3 is composed and the gate G of the N-MOSFET Q1. Further, an error amplification circuit 6 and a pulse width modulation circuit 7 are connected between the connection point of resistors R1 and R2 of which the voltage-dividing resistance 5 consists and the switching device drive circuit 4.  In addition, a frequency variable circuit 11 composed of an oscillation circuit 12 and a ripple voltage detection circuit 13 is connected between the output terminal V2 and the pulse width modulation circuit 7.
Patent JP-H08213245-A (JP)
Title: Variable inductance element
Inventor: KONDO MAKOTO
IPC: H02N2/00
Filed: 1995-02-02
Abstract: PURPOSE: To provide a power-saving and compact variable inductance element which can adjust inductance with improved response by a simple electrical control. CONSTITUTION: Two cores 1a and 1b for forming a magnetic path are retained while they are energized so that they contact with each other by a pressure holder 5. A coil 3 for generating a magnetic flux at the magnetic path is arranged while covering two cores 1a and 1b. A piezoelectric actuator 2 which is arranged so that the stretching direction becomes a direction for alienating two cores 1a and 1b is held by two cores 1a and 1b. When a voltage is applied to the piezoelectric actuator 2, the piezoelectric actuator 2 is extended, thus spreading two cores 1a and 1b against the energization force of the pressure holder 5 and changing the magnetic resistance of the magnetic path.
Patent JP-H06231238-A (JP)
Title: Picture processor
Inventor: IWAKI MINORU
IPC: G09G5/36
Filed: 1993-02-02
Abstract: PURPOSE:To provide a picture processor capable of preventing the disappearance of thin lines and independent points, preventing a picture from being blurred or deformed and obtaining a reduced transformation picture of high quality. CONSTITUTION:A position obtained by copying a remarked picture element on a reduced picture to an original picture is detected, two picture element matrixes having respectively difference sizes and constituted of plural picture elements on the original picture which exist in the vicinity of the detected remarked picture element are extracted, the brack and white rates of the smaller picture element matrix out of the two extracted materixes are respectively set up to K1 and W1, and the brack and white rates of the larger matrix are respectively set up to K2 and W2. When K1 >TkXK2 (provided that Tk >=1) is formed, a black value is selected as the value of the remarked picture element, and when W1>TwXW2 (provided that Tw>=1) is formed, a white value is selected as the value of the remarked picture element. When none of the relation is formed, the value of a picture element on the original picture which exists on the nearest position to the remarked picture element copied to the original picture is selected as the value of the remarked picture element.
Patent JP-S62174605-A (JP)
Title: Measuring method for size and shape on specified section by noncontact type shape measuring instrument
Inventor: KOJIMA YOSHIO
IPC: G01B11/24
Filed: 1986-01-29
Abstract: PURPOSE:To find coordinate values on a specified section even when the irradiation light of a noncontacting sensor can not be constrained within the specified section by measuring coordinates of plural points nearby the specified section and performing arithmetic operations by using those coordinates. CONSTITUTION:It is assumed that a body 1 to be measured is worked in a designed shape 6, and a three-dimensional driving mechanism and an angle varying mechanism 7 are so set that a point Pd in the specified horizontal section 5 is irradiated 5. In this state, a coordinate value P0 of a point obtained by irradiating 3 the surface of the body 1 actually in this state is calculated by an arithmetic control mechanism by using a specific expression. Then only the axis A of the mechanism 7 is driven to measure plural points P0' and P0'' nearby the point P0 which differ in Z coordinate value, thereby calculating their coordinate values P0' and P0''. Those coordinate values are used to find the Y coordinate Yn to the surface 5, i.e. Z=Zn by interpolation or extrapolation. Namely, a polynomial approximate expression Z=b(Y) connecting the three measurement points is found and the intersection Y=Yn of said approximate expression and Z=Zn is only found. Consequently, the coordinate (Xn, Yn, Zn) of the measurement point Pn on the surface 5, i.e. Z=Zn is found.
Patent JP-H09269745-A (JP)
Title: Surface light source elements for traffic sign and traffic sign device
Inventor: ODA MASAHARU
IPC: G09F13/18
Filed: 1997-01-29
Abstract: PROBLEM TO BE SOLVED: To provide surface light source elements of a traffic sign device in which high intensity brightness as well as a uniform luminance distribution within a light-emitting surface are obtained. SOLUTION: The elements consist of a light source 2, a light trasmission body 1 which has at least one light incident plane opposing to the source 2 and a light-emitting plane that is approximately orthogonal to the light incident plane and a light beam angle deflecting sheet 3 which is placed on the light- emitting plane of the body 1. At least one of the light-emitting planen of the body 1 or its back plane is constituted of a pear-skin surface having projections and recessions of average tilt angles of (θa) of 0.5 to 25 deg. and the degree of dispersion (R%) of the luminance within the light-emitting surface of the body 1 is less than 450%.
Patent JP-H03222848-A (JP)
Title: Driving method for electronic control throttle valve
Inventor: YOSHIDA MASATO
IPC: F02D45/00
Filed: 1990-01-29
Abstract: PURPOSE:To keep off any misjudgment of abnormality without fail by judging that something wrong has occurred in a throttle valve driving system in the case where a throttle valve fails to be driven up to the specified opening within the specified judging time, and thereby setting the judging time longer according to a drop in supply voltage. CONSTITUTION:In an intake route of an engine, there are provided with a main control valve THm being regulated of its opening by an accelerator pedal and a sub throttle valve THs being regulated of its opening by a motor 52m in accordance with an opening signal thetas out of a traction controller. The motor 52m is controlled by a motor drive circuit (unillustrated herein) on the basis of output signals theta1, theta2 and an opening signal thetas, etc., of each of opening sensors TPS1, TPS2. In this case, in the case where the sub throttle valve THs fails to be driven up to the specified opening within the specified time, it is so judged that something wrong has occurred in a sub throttle valve driving system, whereby the judging time is set according to a drop in supply voltage of a motor driving power source, through which an abnormal judgment in the sub throttle valve driving system is made so as to be performed without fail.
Patent JP-S54108338-A (JP)
Title: Speed controler for elevators
Inventor: WATANABE HIDENORI
IPC: B66B1/28
Filed: 1978-02-15
Abstract: PURPOSE: To reduce power consumption of a motor, by producing a field power current instruction signal and an armature current instruction signal which minimize power consumption on the basis of an acceleration instruction signal and a load- in-cage signal.  
     CONSTITUTION: A load measuring device 2 is connected with a torque instruction generating circuit 18 is connected via non-linear computing circuits 19, 20 and output limiting circuits 21, 22 with a two-way thyrister converter 7 for armature control. Thus, a deviation signal between an acceleration instruction signal 15 and a speed signal 14a of a speedometer generator 14, a load signal 2a, and an output signal 16a of a differential circuit 16 are input to a torque instruction generating circuit 18, and a torque instruction circuit 18a is output. After performing the determimed computation, the signal 18a, being converted to a field system current instruction signal 21a and an armature current instruction signal 22a which minimize a consumption power, is input to ignition control circuits 13. A field system current If and an armature current Ia then are controlled, and thus, power consumption of a direct current motor can be reduced. 
     COPYRIGHT: (C)1979,JPO&Japio
Patent JP-S53101756-A (JP)
Title: Refrigerating cycle
Inventor: NOZAWA SHIGEKAZU
IPC: F25B5/00
Filed: 1977-02-18
Abstract: PURPOSE: To concurrently cooling the load which differs in temperature conditions by enclosing two refrigerants which are different in physical properties value and operating them under the respective suitable temperature conditions. 
     COPYRIGHT: (C)1978,JPO&Japio
Patent JP-H01191521-A (JP)
Title: D/a converter
Inventor: IDA KAZUNAGA
IPC: H03M1/08
Filed: 1988-01-27
Abstract: PURPOSE:To suppress distortion due to an analog switch by providing plural D/A conversion paths corresponding to the quantity of an input digital signal level and an adder means adding outputs of each D/A conversion path and activating only one D/A conversion path in response to an input digital signal level. CONSTITUTION:A controller 13 stops the supply of a 1st switch control signal to a mute switch 15 and starts the supply of 2nd switch control signal to a mute switch 20. Thus, output of a D/A converter 14 is supplied as it is to an amplifier circuit 16 and zero output of a D/A converter 19 is brought forcibly into a ground level. The fluctuation of a zero output level of the D/A converter 19 and the superimposition of a noise component onto an output analog signal are prevented by setting forcibly the input level of an amplifier circuit 21 to the ground level. Thus, no gain selector switch is required and the distortion in a demodulated analog signal is avoided.
Patent JP-H09208348-A (JP)
Title: Treatment of surface of graphite substrate
Inventor: TOKUDA MASAHIDE
IPC: C04B41/87
Filed: 1996-02-01
Abstract: PROBLEM TO BE SOLVED: To provide a method for treating the surface of a graphite substrate, capable of easily improving the defective oxidation resistance and abrasion resistance of the graphite substrate without requiring a specific device by coating and fixing a metal silicon paste to the surface of the graphite substrate and subsequently thermally treating the coated paste to form a silicon carbide layer. SOLUTION: The graphite substrate has a density of 1.40-1.90g/cm<3> and is obtained by graphitizing a raw material substrate at 1,500-3,000 deg.C. The metal silicon paste is obtained by kneading metal silicon powder (purity: >=98%, particle diameter: 1-150μm) with a thermoplastic polymer, and has a viscosity of 50-1,000 poises. When polyvinyl alcohol is used as the thermoplastic polymer, the concentration of the aqueous solution is desirably 2-5wt.%.  The method for thermally treating the surface is especially not limited, but is carried out by once or twice uniformly coating a surface at an arbitrary site of the graphite substrate processed into a prescribed shape with the metal paste, drying and solidifying the coated metal paste at 100-300 deg.C and then heating the coated substrate at a temperature above the melting point of the silicon, namely 1,450-2,000 deg.C, in an inert gas (e.g. argon).
Patent JP-H04236569-A (JP)
Title: Digital picture reader
Inventor: KAMON KOUICHI
IPC: B41J2/44
Filed: 1991-01-18
Abstract: PURPOSE:To exclude the effect of noise by passing a digital picture fed to a shading data storage RAM and an AGC data decision means through a low pass filter. CONSTITUTION:A signal resulting from reading a reference white board WB by a scanner in precedence over an original read is A/D-converted 4y an A/D converter 34, and a low pass filter 35 employing a linear or a 2-dimension spatial filter is provided among the A/D converter 34, a RAM 40 and a peak detection/AGC circuit 37 to eliminate a noise component in a read picture signal from the reference white board WB.
Patent JP-S57132026-A (JP)
Title: Simulation signal generator
Inventor: YAMAMOTO SUNAO
IPC: G01H3/08
Filed: 1981-02-09
Abstract: PURPOSE:To make a simulation signal generator simple and small in size by generating the results of frequency analysis directly. CONSTITUTION:In accordance with the mimic model based on the sound sources inputted and external environmental data, the arithmetic processing part 7 of a simulation signal generator 6 counts the frequency spectra of the acoustic signal and accumulates the same in an interface part 9. This accumulated simulation signal is supplied to the control display part 5 of a frequency analyzer 1 for the acoustic signal of actual machines and is displayed there. The acoustic simulation signal generator is made simple and small in size by such constitution which eliminates the need for inverse Fourier transformation and generates the results of the frequency analysis as a direct simulation signal.
Patent JP-H10194188-A (JP)
Title: Electric change-gear operating mechanism for bicycle
Inventor: FUKUDA MASAHIKO
IPC: B62L3/02
Filed: 1997-01-14
Abstract: PROBLEM TO BE SOLVED: To quickly operate the speed change and brake operation by providing an electric switch for speed change in a brake lever for braking, which can be moved in relation to a handle. SOLUTION: An electric switch 14 for speed change is provided at an appropriate position of a handle frame 4. A brake lever 15 is provided at an appropriate position of a handle 6 freely to be moved in relation to the handle 6. The brake lever 15 is positioned in front of a grip part 7C, and the grip part 7C and the brake lever 15 can be gripped by one hand at the same time. In the case where a front surface of the brake lever 15 in the traveling direction is expressed with a surface side, the electric switch 14 is fitted to the back surface side of the brake lever 15. The electric switch 14 is formed of a casing, a see-saw type movable part, a reset spring, a movable electric contact and a fixed electric contact.  With this structure, continuity of the braking operation and the accelerating operation is improved, and the speed change operation at the time of moving between both the operation is quickly performed, and the operation control is smoothed.
Patent JP-H11219851-A (JP)
Title: Electret device
Inventor: NAKAMURA TAKURO
IPC: H01G7/02
Filed: 1998-01-29
Abstract: PROBLEM TO BE SOLVED: To elongate an electric device in service life by a method wherein a silicon oxide electret layer is formed on the surface of an electrode formed of metal or high-concentration impurities, and a semiconductor layer which is lower in resistivity than a high-concentration impurity semiconductor is provided between the electrode and a silicon oxide electret layer. SOLUTION: When a semiconductor layer 12 is formed between an electrode 14 and a silicon oxide electret layer 10, an electric field generated between the electrode 14 and the silicon oxide electret layer can be relaxed, so that an electret device long in service life can be obtained. Furthermore, when a semiconductor layer 12 is formed between the electrode 14 and the silicon oxide electret layer 10, and an interface between the semiconductor layer 12 and the silicon oxide electret layer 10 is capable of trapping electric charge, so that charge trapped in the silicon oxide electret layer 10 and another charge trapped in the interface are made to act together, and it is considered that an electret device can be elongated in service life.
Patent JP-S60161975-A (JP)
Title: Preparation of dihydrorose oxide
Inventor: TSUKASA HIDETAKA
IPC: C07D309/04
Filed: 1984-02-02
Abstract: PURPOSE:To obtain the titled substance useful as a raw material for nose based and geranium based compound perfume, by decomposing 3,7-dimethyl-5-oxooctyl acetate thermally in the presence of a silica based catalyst, and hydrogenating the resultant product. CONSTITUTION:A compound expressed by the formula is thermally decomposed in the presence of a silica based catalyst selected from silica.calcia catalyst, silica.magnesia catalyst and silica.alumina catalyst in a quartz tube at 260- 280 deg.C internal temperature thereof under 30-40mm.Hg internal pressure to produce 4-methyl-3,4-dihydro-2H-pyran, which is then hydrogenated in the presence of Raney nickel catalyst, etc. to afford the titled substance. EFFECT:Purification is easily carried out due to no use of a special reagent and solvent, and temperature can be easily controlled.
Patent JP-2000211553-A (JP)
Title: Front part structure of vehicle
Inventor: ISHIKAWA TOSHIHIRO
IPC: B60R21/38
Filed: 1999-01-26
Abstract: PROBLEM TO BE SOLVED: To effectively prevent an upper end of a body to be collided from coming down to a windshield side when a vehicular front end part collides against the body to be collided. SOLUTION: This front part structure of a vehicle comprises a bonnet 2 supported by a bonnet hinge 1 at a rear end part on a vehicular body and is provided with a driving means 3 which upwardly displaces a front end part of the bonnet 2 when the front end part of the vehicle collides against a body to be collided M. The driving means 3 drives the bonnet 2 at colliding to displace the front end part of the bonnet 2 upwardly.