baber/WOPTO huggingface dataset:
Patent JP-S58155528-A (JP)
Title: Optical disc recording and reproducing system, optical disc and its manufacture
Inventor: NAGASHIMA MICHIYOSHI
IPC: G11B7/24076
Filed: 1982-03-10
Abstract: PURPOSE:To attain the recording or reproduction of high density information, by recording sreviously tracking signals of different frequencies on the top and the bottom of a V-shaped or inverted trapezoidal grooves as pits in advance, and tracking the optical spot at the center of a tilt surface of the groove. CONSTITUTION:Grooves having V-shaped or trapezoidal radial cross section are provided on the optical disc, signals in frequency f1 are formed on the top and signals in frequency f2 are formed on the top as tracking pits, for example. Laser light is collected and irradiated on the optical disc, and when the distribution (b) of light intensity is obtained with a little shift from the center of the tilt surface to the top, the change in the amount of light in the frequency f2 is larger than that in the frequency f1, and when the optical beam is shifted to the bottom inversely (distribution c), the change in the amount of light in frequency f1 is larger. Thus, the tracking to the center of the tilt surface is executed by making the amplitude of the change in the amount of light changing in the two frequencies f1, f2 equal with each other.
Patent JP-S63204017-A (JP)
Title: Combustion device
Inventor: KANEZAKI KOICHI
IPC: F23N1/02
Filed: 1987-02-20
Abstract: PURPOSE:To stabilize combustion at all times even when the pressure of a combustion chamber is fluctuated, by a method wherein a venturi unit is provided between a burner and a fan to detect pressure difference in between and the output of the fan is controlled so that the pressure difference is matched with the supplying amount of fuel. CONSTITUTION:A venturi unit 11 is provided in the supplying passageway 5a of combustion air, which connects a burner 4 and a fan 5, while a pressure difference detecting device 10 is connected to the supplying passageway 5a on upstream and downstream of the venturi unit 11. The load of a combustion device is operated by a control unit 7 by comparing the signal of an output hot-water thermistor 12, provided at the outlet port of a heat exchanger 2, with a set temperature to determine the output (supplying amount of gas) of a gas control valve 6 in accordance with the operated load. On the other hand, the control unit determines the output (torque) of the fan 5 so that the pressure difference, detected by the pressure difference detecting device 10, becomes equal to the pressure difference of the venturi 11 in accordance with the determined output of the gas control valve 6. The fan 5 is rotated by the signal of the control unit 7 to supply the combustion air. According to this method, combustion may be stabilized even when the fins of the heat exchanger are clogged by soot or the like.
Patent JP-S56135073-A (JP)
Title: Ink jet recorder
Inventor: ICHIZUKA KIYOMI
IPC: G06K15/10
Filed: 1980-03-26
Abstract: PURPOSE:To prevent the corrosion of a metallic member contacting with an ink  without exerting effects on the ink by a method wherein an electrode is mounted  into the ink, and currents are flowed between the electrode and the metallc member, in a field deflection controlling system recorder using the aqueous ink. CONSTITUTION:An electrode 15 is inserted to a metallic member contacting with  an ink such as a pipe 12 of an ink circulating course 13, which is formed by a  nozzle 7, a pump 5, an ink storage tank 4, an ink recovering plate 11 and the pipe  12, through an insulating member 14, and DC currents are flowed so that the electrode 15 acts as a (+) electrode and the metallic member a (-) electrode by  means of a DC power supply 16. A platinum or carbon electrode is used as the electrode 15, and the electrode is not corroded during conduction. Since currents are  extremely little at that time, an ink-drop generating section is not affected. When there are a plurality of metallic members not contacting with an ink connected electrically, resistors R1-R4 for distributing currents may be connected to each and used as (-) electrodes.
Patent JP-S62196808-A (JP)
Title: Detecting element for magnetic field
Inventor: WATANABE AKIHIRO
IPC: H01F38/20
Filed: 1986-02-24
Abstract: PURPOSE:To detect even a magnetic field to be detected in any direction by forming a magnetic circuit by a plurality of magnetic poles separated by a plurality of magnetic gaps having different directions and a magnetic core. CONSTITUTION:Each magnetic circuit is shaped by a plurality of magnetic poles 12 separated by a plurality of magnetic gaps 11 having different directions and magnetic cores 13 coupling each of these magnetic poles 12. When a magnetic field is directed in the X direction, change with time of magnetic flux is detected as voltage by coils 14a, 14b for detection. When the magnetic field is directed in the Y direction, change with time of magnetic flux is detected as voltage by coils 14b, 14c for detection. Accordingly, even the magnetic field to be detected in any direction can be detected.
Patent JP-H02248632-A (JP)
Title: Control device for throttle valve for internal combustion engine
Inventor: KAARU GUMERIN
IPC: F02M3/07
Filed: 1990-02-21
Abstract: PURPOSE: To reduce frictional force between a stationary spring guide sleeve and a rotating release spring end by axially projecting a collet from a swivel lever bush and fixing one sleeve part of the spring guide sleeve to the collet in the projecting range. CONSTITUTION: A collet 16 is axially projected from a swivel lever bush and supports one sleeve part 24 of a spring guide sleeve 22 in the projecting part, and the other sleeve part 23 of the sleeve 22 is fixed to a bush 15. When an adjusting lever 17 is rotated by a throttle valve adjusting device 20, a coil spring 26 in contact with a lever 17 through the collet 16, the sleeve part 24 and the spring end 262 is rotated together with the lever 17. Therefore, no relative movement exist between the stationary sleeve part 23 and the coil spring 26, any friction is not generated, and friction is not generated even in the returning rotation of the lever 17 by the adjusting device 20.
Patent JP-S51114015-A (JP)
Title: Feedback clamp circuit
Inventor: NINOMIYA YUUICHI
IPC: H03K5/007
Filed: 1975-04-01
Abstract: PURPOSE: Economic and very high speed clamping through feedback of the output from two comparators after passing them through diodes. 
     COPYRIGHT: (C)1976,JPO&Japio
Patent JP-S63205202-A (JP)
Inventor: IMAI AKIRA
IPC: B27D5/00
Filed: 1987-02-20
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-H06232455-A (JP)
Title: Light signal transmission device with optical fiber
Inventor: HATTORI HITOSHI
IPC: H04B10/25
Filed: 1993-02-26
Abstract: PURPOSE:To furnish a light signal transmission device with an optical fiber which makes it possible to make the capacity of data transmission large and the device small and can execute highly-reliable data transmission in parallel data transmission. CONSTITUTION:This device is formed of at least one semiconductor light- emitting element 2 for transmission formed on a base 1, of at least one semiconductor photodetector 3 for reception which is formed on the same base as the semiconductor light-emitting element 2 for transmission, has the same layer structure as this element and is isolated therefrom electrically and spatially by an isolating groove, and of optical fibers 5 and 6 for executing transmission and reception of a light signal to be transmitted to and from the semiconductor light-emitting element 2 for transmission and the semiconductor photodetector 3 for reception.
Patent JP-S59164764-A (JP)
Title: Substituted methylthiomethylarylsulfone
Inventor: OGURA KATSUYUKI
IPC: C07C323/65
Filed: 1983-03-09
Abstract: NEW MATERIAL:A compound shown by the formula I (R is aryl; R' is alkyl, alkenyl, aryl-substituted alkyl, or alkoxycarbonyl-substituted alkyl). EXAMPLE:1-Methylthio-1-(p-tolylsulfonyl)tridecane. USE:A raw material for preparing drugs, agricultural chemicals, or an intermediate for synthesizing them. PREPARATION:A methylthiomethylarylsulfone shown by the formula II is reacted with an alkyl derivative shown by the formula R'X(X is halogen, or sulfonato) in the presence of a base (e.g., sodium hydride, n-butyl lithium, sodium hydroxide, etc.) in a solvent such as tetrahydrofuran, toluene, etc. at -20-100 deg.C, to give a compound shown by the formula I .
Patent JP-H07247315-A (JP)
Title: Production of mercapto-group-containing polymer
Inventor: ARITA YOSHIHIRO
IPC: C08F20/34
Filed: 1994-03-09
Abstract: PURPOSE:To obtain a polymer having highly reactive amino and mercapto groups in the molecule by reacting a polymer having aminoalkyl ester groups with a specific thiirane compd. CONSTITUTION:A polymer having aminoalkyl ester groups is reacted with a thiirane compd. of the formula (wherein R<1> to R<4> are each H, alkyl, or arom. provided they may be the same or different from each other). Examples of the polymer are an aminoalkylated polymer obtd. by the addition reaction of an aziridine compd. to a carboxylated polymer and a polymer obtd. by polymerizing or copolymerizing an aminoalkyl ester monomer. Examples of the compd. are ethylene sulfide, propylene sulfide, isobutylene sulfide, and styrene sulfide.
Patent JP-S59165850-A (JP)
Title: Control method for electronically controlled carburettor
Inventor: WAKAO TETSUYA
IPC: F02D41/14
Filed: 1983-03-09
Abstract: PURPOSE:To enhance safety and reliability of an engine by controlling the air- to-fuel ratio through opening/closing of a solenoid valve in accordance with the duty value of control pulses corrected by the atmospheric pressure value, and thereby eliminating disorder of the engine. CONSTITUTION:When an engine is in warming up or in operation with heave load, the mode is transferred to Step (4), where open loop controls except the theoretical air-to-fuel ratio control are performed. The fixed duty value C undergoes correction with water and suction temps. and the atmospheric pressure. When the atmospheric pressure is low, the duty value is increased to make correction of the air-to-fuel ratio to the lean side. Thereby proper air-to-fuel ratio is secured for the whole operating range of the engine to ensure that it operates without fear of disorder, and thus the reliability and safety with the engine will be enhanced.
Patent JP-H05206743-A (JP)
Title: Amplifier with low three-dimensional distortion
Inventor: OTANI HIROMICHI
IPC: H03F1/32
Filed: 1992-01-29
Abstract: PURPOSE:To cancel 3-dimension distortion and to output a main signal while being amplified by a prescribed quantity by using a phase equalization device to match a passing phase length of one signal path with that of other signal path and using a coupler to couple the signals through phase inversion. CONSTITUTION:When the passing loss in a hybrid transformer 2 is the same and the gain of amplifiers 3, 7 is G1dB and the gain of an amplifier 6 is G2dB, an output of the amplifier 7 is higher than that of the amplifier 3 by G2dB. Thus, the absolute value of the 3-dimension distortion is higher by 3G2dB. However, the loss of one output terminal of the transformer 2 has a larger loss by 1/3 of G2dB of the gain of the amplifier 6. Thus, the absolute value of the 3-dimension distortion outputted from the amplifiers 3, 7 is the same, and when a coupler 5 couples the signals while inverting the phase, the 3-dimension distortion is cancelled. Furthermore, the main signals are coupled through phase inversion but the gain of the main signals differs in two signal paths, and they are not completely cancelled and then the main signal is outputted while being amplified by a prescribed quantity.
Patent JP-H11238827-A (JP)
Title: Manufacture of metal core
Inventor: TAKE MORIO
IPC: H01L23/12
Filed: 1998-02-20
Abstract: PROBLEM TO BE SOLVED: To form simultaneously a protruding part and clearance holes or slits in one time of an etching process by a method wherein in the etching process, an etching liquid is sprayed upon the protruding part formation surface of an internal metal plate at a low pressure and an etching liquid is sprayed upon the opposite side to the protruding part formation surface at a high pressure. SOLUTION: A 200-μm thick copper plate, which is used as an internal metal plate (b), is prepared and after a liquid etching resist (a) is applied on the whole surface of the plate (b) in a thickness of 20 μm and is dried, the surface of the plate (b) is formed in such a way that the etching resist is left on the part of a protruding part and the rear of the plate (b) is irradiated with ultraviolet rays so that an etching resist (a) on learance hole parts (c) is removed to develop the rear with 1% of a sodium carbonate solution.  After that, the surface and the rear of the plate (b) are simultaneously etched from both sides of the plate (b) at 1.0 kgf/cm<2> in the surface and 2.5 kgf/cm<2> in the rear, one piece of a 13 mm-square and 100-μm high protrusion is formed in the center of a package with the protruding part of a 50-mm square size on the surface of the plate (b) and at the same time, 0.6 mmϕ of the clearance holes (c) are bored. As a result, the hole diameters of the holes (c) are formed almost equal.
Patent JP-H07249356-A (JP)
Title: Gas filled breaker
Inventor: SAKAKI MASAYUKI
IPC: H01H33/985
Filed: 1994-03-10
Abstract: PURPOSE:To provide a low-cost gas filled circuit breaker having a very simple structure and the ability to pass and interrupt current. CONSTITUTION:An arching contact 22 is provided in the position of the axis of a fixed base 4 to which a fixed contact 9 is attached, and a Teflon member 25 pressed toward the end of a moving contact 24 by a spring 26 and having its end portion exposed to the end of the moving contact 24 is freely movably housed in the hollow part 24a of the moving contact 24 into and out of which the arching contact 22 can be moved. When an arc is formed the Teflon member is vaporized by the heat of the arc, and this heat of vaporization is utilized to cool and extinguish the arc.
Patent JP-S63207984-A (JP)
Inventor: MIZUKAMI HIDEAKI
IPC: F27B14/06
Filed: 1987-02-24
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-H10241119-A (JP)
Title: Manufacture for composite type thin film magnetic head
Inventor: TANIGUCHI YOSHINOBU
IPC: G11B5/31
Filed: 1997-02-24
Abstract: PROBLEM TO BE SOLVED: To provide a manufacture for a composite thin film magnetic head which does not cause a distortion in a recording pattern and can improve a production yield. SOLUTION: In a formation process for a lower core layer 5 consisting of a front core part and a back core part, a preparatory layer 52 is formed which has a larger width than the front core part at an area from a medium-faced face to a position of a depth end and the same width as the back core part at an area expanding rearward from the position of the depth end. A surface of the preparatory layer 52 is polished. Accordingly, the back core part in a predetermined width having a pair of curved faces connecting side faces and an upper face smoothly is formed. Thereafter, side parts of the preparatory layer 52 at the area from the medium-faced face to the position of the depth end are removed, so that the preparatory layer 52 at the area is made the front core part having a predetermined width where both side faces and the upper face intersect approximately at right angles.
Patent JP-S61198033-A (JP)
Title: Vehicle testing device
Inventor: ARATA TOSHIHIKO
IPC: G01M17/007
Filed: 1985-02-28
Abstract: PURPOSE:To simulate an ideal endless flat road surface by using two flat disks as a simulation of an actual road, when executing a vehicle test indoors without executing an actual running. CONSTITUTION:A titled device is provided with two flat disks 6 which rotates by using a vertical direction axis as a center axis, a driving wheel 5 of a vehicle 1 to be tested is placed on said disk, and the vehicle 1 to be tested is fixed by clamping a non-driving wheel by a clamp device 7. In this state, the vehicle 1 is driven and two flat disks 6 are rotated, and also the same load as an actual running and an inertia effect corresponding to weight of a car body are given through its center axis, and a role of an endless flat road is executed. Accordingly, since the flat disk 6 is used instead of a road, an ideal endless flat road surface can be simulated, and in a state being near the actual running, a dynamic running test of the vehicle 1 can be performed.
Patent JP-H01213605-A (JP)
Title: Method for laying optical fiber cable
Inventor: ISHII HIROSHI
IPC: G02B6/46
Filed: 1988-02-22
Abstract: PURPOSE:To suppress damage to be applied to a messenger wire itself at its minimum by using a winding grip at the time of temporarily clamping the FRP-made messenger wire. CONSTITUTION:The temporary clamping winding grip 10 having an annular hook part 11 e.g. is fixed on a way part close to the terminal of the messenger wire 1. Although a single wire may be used as the constitutional strand 15 of the grip 10, a flexible member consisting of a stranded wire may be preferably used as the strand 15 and the strand is directly wound around a sheath of the messenger wire 1. When the grip strand 15 is soft, the fitness or adhesive strength of the grip strand 15 with a rod is proper even if clamping force from the outer periphery of the rod is comparatively weak, and large gripping force is obtained by plural windings. Consequently, the rod itself can be prevented from being damaged and the winding and rewinding of the grip strand 15 can be extremely simple executed.
Patent JP-H06253302-A (JP)
Title: Vedeo conference system
Inventor: INOUE FUMIO
IPC: H04N7/15
Filed: 1993-02-26
Abstract: PURPOSE:To obtain a smooth image even by the video conference system which provides a multichannel speech communication even when the motion of the image becomes strong and the amount of information of the image increases. CONSTITUTION:This system is equipped with a detecting means 5 for the number of frames per second, a determining means 6 for the number of speech assigned channels, a setting means 7 for a determination parameter for the number of speech assigned channels, and a speech encoded data selecting means 8, and an image CODEC 2 determines the number of speech assigned channels on the basis of the number of frames per second as to encoded data; when the amount of information of the image increases, the number of speech channels is decreased to increase the line capacity for the image for a smooth image communication and when the amount of information of the image decreases, on the other hand, the line capacity for the image is decreased to increase the number of speech channels, thereby making a speech communication which provides presence feeling.
Patent JP-H03244848-A (JP)
Title: Fiber reinforced rubber product
Inventor: NAKANISHI YASUYUKI
IPC: F16G1/28
Filed: 1990-02-19
Abstract: PURPOSE:To make improvements in both strength and elastic modulus utilization factors of a reinforcer for a rubber product by constituting the reinforcer with a plaited cord with a hollow part cylindrically braided with even pieces of filament yarn of more than four pieces and core yarn installed in this hollow part. CONSTITUTION:A reinforcer 2 of a toothed belt A, by way of example, is composed of plural pieces of plaited cords 7 with a hollow part 8 cylindrically braided with even pieces of filament yarn 6 of more than four pieces, and core yarn 9 insertionally set up in the said hollow part 8 of this cord 7. The core yarn 9 is composed of untwisted yarn and soft twist yarn set below the equation of K=T.D<1/2>=350 (K is twist coefficient, T is twist times per 10cm, D is total denier number) in terms of twist coefficient. With this constitution, both strength and elastic modulus utilization factors of the reinforcer are improved by a twist characteristic of the twisted yarn and, what is more, deformation to an external stress of the twisted yarn is covered by a structural characteristic of the plaited cord, thus dimensional stability for a product is improved.
Patent JP-H03243274-A (JP)
Title: Consumable electrode welding machine
Inventor: GOTO YASUHIRO
IPC: B23K9/095
Filed: 1990-02-20
Abstract: PURPOSE:To improve workability and welding quality by controlling welding conditions according to a welding condition command signal and controlling welding start conditions according to the length of the elapsed time from the welding finishing time till the welding starting time. CONSTITUTION:A welding output control circuit 2 controls the welding conditions according to the welding condition command signal by using a commend circuit 13. A timer circuit 10 is started from the welding finishing time and stopped at the welding starting time. A control means controls the welding start output during a welding condition command according to a count value of the timer circuit 10. Consequently, the welding start performance with high reliability can be realized.
Patent JP-S52123276-A (JP)
Title: Time correcting method for analogue crystal timepiece
Inventor: MURATA NOBUHIRO
IPC: G04C9/08
Filed: 1976-04-09
Abstract: PURPOSE: To provide a method of time correcting method according to which back-side switching mechanism for transmitting rotation of winding crown, hand-correcting gear trains of slip mechanism are made unnecessary, as were required in conventional time correcting mechanism, wheredy structure of the timepiece can be made simple and compact, and at the same time, occurrence for troubles can be minimized. 
     COPYRIGHT: (C)1977,JPO&Japio
Patent JP-H06225892-A (JP)
Title: Pollution preventing device for hand piece
Inventor: MORI HIDENOBU
IPC: A61C1/08
Filed: 1993-02-03
Abstract: PURPOSE:To prevent the outside polluted air from entering a hand piece by providing an expansion chamber expanded when the compressed air is fed, and feeding the air in the expansion chamber to an air turbine at the time of cutoff. CONSTITUTION:When an expansion chamber 20 is constituted of a piston 20 and a cylinder 21, the piston 22 is pushed by a spring 23 and located at the position 22' while not in use. When an air turbine is driven, the pressure by the compressed air fed from a compressed air feeding circuit is applied into the cylinder 21. The piston 22 is pressed against the spring 23, the compressed air is accumulated in the cylinder 21, the air turbine is driven for a desired dental treatment while the piston 22 is kept at this state. When the feed of the compressed air is cut off to stop the air turbine, the air accumulated in the cylinder 21 is pressed by the spring 23 and discharged to the air turbine side. The inside of an air turbine hand piece 1 is kept at the positive pressure, and the suction of the ambient polluted air into the hand piece 1 is prevented.
Patent JP-S53125099-A (JP)
Title: Monitor apparatus of purity of sodium
Inventor: YAMAMOTO HAJIME
IPC: G01N11/04
Filed: 1977-04-08
Abstract: PURPOSE: To accurately detect the minute change in Na flow rate at the deposition of impurities and correctly obtain the saturation dissolution temperature of the impurities by applying a specific bridge circuit in the Na purity monitor apparatus of a Na cooling type fast breeder reactor. 
     COPYRIGHT: (C)1978,JPO&Japio
Patent JP-S52122988-A (JP)
Title: Machine tool for end of wire such as welding rod
Inventor: FUKUHARA HEIHACHI
IPC: B23Q7/00
Filed: 1976-04-07
Abstract: PURPOSE: To provide a machine tool for safely and accurately working in mass production without incurring the increase of production cost and environmental deterioration of production field. 
     COPYRIGHT: (C)1977,JPO&Japio